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[Linux-stable-mirror] v4.4.114 build: 0 failures 0 warnings (v4.4.114)

by Build bot for Mark Brown

Tree/Branch: v4.4.114 Git describe: v4.4.114 Commit: 49fe90b853 Linux 4.4.114 Build Time: 67 min 16 sec Passed: 9 / 9 (100.00 %) Failed: 0 / 9 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

7 years, 7 months

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[Linux-stable-mirror] [PATCH v2] KVM: arm/arm64: Fix arch timers with userspace irqchips

by Christoffer Dall

When introducing support for irqchip in userspace we needed a way to mask the timer signal to prevent the guest continuously exiting due to a screaming timer. We did this by disabling the corresponding percpu interrupt on the host interrupt controller, because we cannot rely on the host system having a GIC, and therefore cannot make any assumptions about having an active state to hide the timer signal. Unfortunately, when introducing this feature, it became entirely possible that a VCPU which belongs to a VM that has a userspace irqchip can disable the vtimer irq on the host on some physical CPU, and then go away without ever enabling the vtimer irq on that physical CPU again. This means that using irqchips in userspace on a system that also supports running VMs with an in-kernel GIC can prevent forward progress from in-kernel GIC VMs. Later on, when we started taking virtual timer interrupts in the arch timer code, we would also leave this timer state active for userspace irqchip VMs, because we leave it up to a VGIC-enabled guest to deactivate the hardware IRQ using the HW bit in the LR. Both issues are solved by only using the enable/disable trick on systems that do not have a host GIC which supports the active state, because all VMs on such systems must use irqchips in userspace. Systems that have a working GIC with support for an active state use the active state to mask the timer signal for both userspace and in-kernel irqchips. Cc: Alexander Graf <agraf(a)suse.de> Cc: <stable(a)vger.kernel.org> # v4.12+ Fixes: d9e139778376 ("KVM: arm/arm64: Support arch timers with a userspace gic") Signed-off-by: Christoffer Dall <christoffer.dall(a)linaro.org> --- This conflicts horribly with everything when applied to either kvmarm/queue or kvmarm/master. Therefore, this patch is written for (and applies to) v4.15 with kvmarm/queue merged and should therefore apply cleanly after v4.16-rc1. An example with this patch applied can be found on kvmarm/temp-for-v4.16-rc2. I plan on sending this along with any other potential fixes post v4.16-rc1. Changes since v1: - Added userspace_irqchip() wrapper to simplify logic - Changed has_gic_active_state to a static key - Fixed typos in commentary and commit message - Clear the active state on sync for userspace irqchips on systems with a working GIC. - Get rid of __timer_snapshot_state() in unmaks_vtimer_irq_user() because kvm_timer_should_fire() has already been reworked in other patches to look at the timer state when it's loaded onto the hardware. As a result, we don't need the __timer_snapshot_state() indirection anymore and this logic is now inlined in vtimer_save_state(). virt/kvm/arm/arch_timer.c | 116 +++++++++++++++++++++++++--------------------- 1 file changed, 64 insertions(+), 52 deletions(-) diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 70268c0bec79..70f4c30918eb 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -36,6 +36,8 @@ static struct timecounter *timecounter; static unsigned int host_vtimer_irq; static u32 host_vtimer_irq_flags; +static DEFINE_STATIC_KEY_FALSE(has_gic_active_state); + static const struct kvm_irq_level default_ptimer_irq = { .irq = 30, .level = 1, @@ -56,6 +58,12 @@ u64 kvm_phys_timer_read(void) return timecounter->cc->read(timecounter->cc); } +static inline bool userspace_irqchip(struct kvm *kvm) +{ + return static_branch_unlikely(&userspace_irqchip_in_use) && + unlikely(!irqchip_in_kernel(kvm)); +} + static void soft_timer_start(struct hrtimer *hrt, u64 ns) { hrtimer_start(hrt, ktime_add_ns(ktime_get(), ns), @@ -69,25 +77,6 @@ static void soft_timer_cancel(struct hrtimer *hrt, struct work_struct *work) cancel_work_sync(work); } -static void kvm_vtimer_update_mask_user(struct kvm_vcpu *vcpu) -{ - struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); - - /* - * When using a userspace irqchip with the architected timers, we must - * prevent continuously exiting from the guest, and therefore mask the - * physical interrupt by disabling it on the host interrupt controller - * when the virtual level is high, such that the guest can make - * forward progress. Once we detect the output level being - * de-asserted, we unmask the interrupt again so that we exit from the - * guest when the timer fires. - */ - if (vtimer->irq.level) - disable_percpu_irq(host_vtimer_irq); - else - enable_percpu_irq(host_vtimer_irq, 0); -} - static irqreturn_t kvm_arch_timer_handler(int irq, void *dev_id) { struct kvm_vcpu *vcpu = *(struct kvm_vcpu **)dev_id; @@ -106,9 +95,9 @@ static irqreturn_t kvm_arch_timer_handler(int irq, void *dev_id) if (kvm_timer_should_fire(vtimer)) kvm_timer_update_irq(vcpu, true, vtimer); - if (static_branch_unlikely(&userspace_irqchip_in_use) && - unlikely(!irqchip_in_kernel(vcpu->kvm))) - kvm_vtimer_update_mask_user(vcpu); + if (userspace_irqchip(vcpu->kvm) && + !static_branch_unlikely(&has_gic_active_state)) + disable_percpu_irq(host_vtimer_irq); return IRQ_HANDLED; } @@ -290,8 +279,7 @@ static void kvm_timer_update_irq(struct kvm_vcpu *vcpu, bool new_level, trace_kvm_timer_update_irq(vcpu->vcpu_id, timer_ctx->irq.irq, timer_ctx->irq.level); - if (!static_branch_unlikely(&userspace_irqchip_in_use) || - likely(irqchip_in_kernel(vcpu->kvm))) { + if (!userspace_irqchip(vcpu->kvm)) { ret = kvm_vgic_inject_irq(vcpu->kvm, vcpu->vcpu_id, timer_ctx->irq.irq, timer_ctx->irq.level, @@ -350,12 +338,6 @@ static void kvm_timer_update_state(struct kvm_vcpu *vcpu) phys_timer_emulate(vcpu); } -static void __timer_snapshot_state(struct arch_timer_context *timer) -{ - timer->cnt_ctl = read_sysreg_el0(cntv_ctl); - timer->cnt_cval = read_sysreg_el0(cntv_cval); -} - static void vtimer_save_state(struct kvm_vcpu *vcpu) { struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu; @@ -367,8 +349,10 @@ static void vtimer_save_state(struct kvm_vcpu *vcpu) if (!vtimer->loaded) goto out; - if (timer->enabled) - __timer_snapshot_state(vtimer); + if (timer->enabled) { + vtimer->cnt_ctl = read_sysreg_el0(cntv_ctl); + vtimer->cnt_cval = read_sysreg_el0(cntv_cval); + } /* Disable the virtual timer */ write_sysreg_el0(0, cntv_ctl); @@ -460,23 +444,43 @@ static void set_cntvoff(u64 cntvoff) kvm_call_hyp(__kvm_timer_set_cntvoff, low, high); } -static void kvm_timer_vcpu_load_vgic(struct kvm_vcpu *vcpu) +static inline void set_vtimer_irq_phys_active(struct kvm_vcpu *vcpu, bool active) +{ + int r; + r = irq_set_irqchip_state(host_vtimer_irq, IRQCHIP_STATE_ACTIVE, active); + WARN_ON(r); +} + +static void kvm_timer_vcpu_load_gic(struct kvm_vcpu *vcpu) { struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); bool phys_active; - int ret; - phys_active = kvm_vgic_map_is_active(vcpu, vtimer->irq.irq); - - ret = irq_set_irqchip_state(host_vtimer_irq, - IRQCHIP_STATE_ACTIVE, - phys_active); - WARN_ON(ret); + if (irqchip_in_kernel(vcpu->kvm)) + phys_active = kvm_vgic_map_is_active(vcpu, vtimer->irq.irq); + else + phys_active = vtimer->irq.level; + set_vtimer_irq_phys_active(vcpu, phys_active); } -static void kvm_timer_vcpu_load_user(struct kvm_vcpu *vcpu) +static void kvm_timer_vcpu_load_nogic(struct kvm_vcpu *vcpu) { - kvm_vtimer_update_mask_user(vcpu); + struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); + + /* + * When using a userspace irqchip with the architected timers and a + * host interrupt controller that doesn't support an active state, we + * must still prevent continuously exiting from the guest, and + * therefore mask the physical interrupt by disabling it on the host + * interrupt controller when the virtual level is high, such that the + * guest can make forward progress. Once we detect the output level + * being de-asserted, we unmask the interrupt again so that we exit + * from the guest when the timer fires. + */ + if (vtimer->irq.level) + disable_percpu_irq(host_vtimer_irq); + else + enable_percpu_irq(host_vtimer_irq, host_vtimer_irq_flags); } void kvm_timer_vcpu_load(struct kvm_vcpu *vcpu) @@ -487,10 +491,10 @@ void kvm_timer_vcpu_load(struct kvm_vcpu *vcpu) if (unlikely(!timer->enabled)) return; - if (unlikely(!irqchip_in_kernel(vcpu->kvm))) - kvm_timer_vcpu_load_user(vcpu); + if (static_branch_likely(&has_gic_active_state)) + kvm_timer_vcpu_load_gic(vcpu); else - kvm_timer_vcpu_load_vgic(vcpu); + kvm_timer_vcpu_load_nogic(vcpu); set_cntvoff(vtimer->cntvoff); @@ -555,18 +559,24 @@ static void unmask_vtimer_irq_user(struct kvm_vcpu *vcpu) { struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); - if (unlikely(!irqchip_in_kernel(vcpu->kvm))) { - __timer_snapshot_state(vtimer); - if (!kvm_timer_should_fire(vtimer)) { - kvm_timer_update_irq(vcpu, false, vtimer); - kvm_vtimer_update_mask_user(vcpu); - } + if (!kvm_timer_should_fire(vtimer)) { + kvm_timer_update_irq(vcpu, false, vtimer); + if (static_branch_likely(&has_gic_active_state)) + set_vtimer_irq_phys_active(vcpu, false); + else + enable_percpu_irq(host_vtimer_irq, host_vtimer_irq_flags); } } void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu) { - unmask_vtimer_irq_user(vcpu); + struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu; + + if (unlikely(!timer->enabled)) + return; + + if (unlikely(!irqchip_in_kernel(vcpu->kvm))) + unmask_vtimer_irq_user(vcpu); } int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu) @@ -753,6 +763,8 @@ int kvm_timer_hyp_init(bool has_gic) kvm_err("kvm_arch_timer: error setting vcpu affinity\n"); goto out_free_irq; } + + static_branch_enable(&has_gic_active_state); } kvm_info("virtual timer IRQ%d\n", host_vtimer_irq); -- 2.14.2

7 years, 7 months

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[Linux-stable-mirror] Patch "um: Stop abusing __KERNEL__" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled um: Stop abusing __KERNEL__ to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: um-stop-abusing-__kernel__.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 298e20ba8c197e8d429a6c8671550c41c7919033 Mon Sep 17 00:00:00 2001 From: Richard Weinberger <richard(a)nod.at> Date: Sun, 31 May 2015 19:50:57 +0200 Subject: um: Stop abusing __KERNEL__ From: Richard Weinberger <richard(a)nod.at> commit 298e20ba8c197e8d429a6c8671550c41c7919033 upstream. Currently UML is abusing __KERNEL__ to distinguish between kernel and host code (os-Linux). It is better to use a custom define such that existing users of __KERNEL__ don't get confused. Signed-off-by: Richard Weinberger <richard(a)nod.at> Cc: Greg Hackmann <ghackmann(a)google.com> Cc: Bernie Innocenti <codewiz(a)google.com> Cc: Lorenzo Colitti <lorenzo(a)google.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/um/Makefile | 7 ++++--- arch/um/drivers/mconsole.h | 2 +- arch/um/include/shared/init.h | 4 ++-- arch/um/include/shared/user.h | 2 +- arch/x86/um/shared/sysdep/tls.h | 6 +++--- 5 files changed, 11 insertions(+), 10 deletions(-) --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -68,9 +68,10 @@ KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) - KBUILD_AFLAGS += $(ARCH_INCLUDE) -USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\ - $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \ - $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include +USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \ + $(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \ + -D_FILE_OFFSET_BITS=64 -idirafter include \ + -D__KERNEL__ -D__UM_HOST__ #This will adjust *FLAGS accordingly to the platform. include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) --- a/arch/um/drivers/mconsole.h +++ b/arch/um/drivers/mconsole.h @@ -7,7 +7,7 @@ #ifndef __MCONSOLE_H__ #define __MCONSOLE_H__ -#ifndef __KERNEL__ +#ifdef __UM_HOST__ #include <stdint.h> #define u32 uint32_t #endif --- a/arch/um/include/shared/init.h +++ b/arch/um/include/shared/init.h @@ -40,7 +40,7 @@ typedef int (*initcall_t)(void); typedef void (*exitcall_t)(void); -#ifndef __KERNEL__ +#ifdef __UM_HOST__ #ifndef __section # define __section(S) __attribute__ ((__section__(#S))) #endif @@ -131,7 +131,7 @@ extern struct uml_param __uml_setup_star #define __uml_postsetup_call __used __section(.uml.postsetup.init) #define __uml_exit_call __used __section(.uml.exitcall.exit) -#ifndef __KERNEL__ +#ifdef __UM_HOST__ #define __define_initcall(level,fn) \ static initcall_t __initcall_##fn __used \ --- a/arch/um/include/shared/user.h +++ b/arch/um/include/shared/user.h @@ -17,7 +17,7 @@ #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) /* This is to get size_t */ -#ifdef __KERNEL__ +#ifndef __UM_HOST__ #include <linux/types.h> #else #include <stddef.h> --- a/arch/x86/um/shared/sysdep/tls.h +++ b/arch/x86/um/shared/sysdep/tls.h @@ -1,7 +1,7 @@ #ifndef _SYSDEP_TLS_H #define _SYSDEP_TLS_H -# ifndef __KERNEL__ +#ifdef __UM_HOST__ /* Change name to avoid conflicts with the original one from <asm/ldt.h>, which * may be named user_desc (but in 2.4 and in header matching its API was named @@ -22,11 +22,11 @@ typedef struct um_dup_user_desc { #endif } user_desc_t; -# else /* __KERNEL__ */ +#else /* __UM_HOST__ */ typedef struct user_desc user_desc_t; -# endif /* __KERNEL__ */ +#endif /* __UM_HOST__ */ extern int os_set_thread_area(user_desc_t *info, int pid); extern int os_get_thread_area(user_desc_t *info, int pid); Patches currently in stable-queue which might be from richard(a)nod.at are queue-3.18/um-stop-abusing-__kernel__.patch queue-3.18/um-link-vmlinux-with-no-pie.patch queue-3.18/um-remove-copy-paste-code-from-init.h.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "um: Remove copy&paste code from init.h" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled um: Remove copy&paste code from init.h to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: um-remove-copy-paste-code-from-init.h.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 30b11ee9ae23d78de66b9ae315880af17a64ba83 Mon Sep 17 00:00:00 2001 From: Richard Weinberger <richard(a)nod.at> Date: Sun, 31 May 2015 22:15:58 +0200 Subject: um: Remove copy&paste code from init.h From: Richard Weinberger <richard(a)nod.at> commit 30b11ee9ae23d78de66b9ae315880af17a64ba83 upstream. As we got rid of the __KERNEL__ abuse, we can directly include linux/compiler.h now. This also allows gcc 5 to build UML. Reported-by: Hans-Werner Hilse <hwhilse(a)gmail.com> Signed-off-by: Richard Weinberger <richard(a)nod.at> Cc: Greg Hackmann <ghackmann(a)google.com> Cc: Bernie Innocenti <codewiz(a)google.com> Cc: Lorenzo Colitti <lorenzo(a)google.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/um/include/shared/init.h | 22 +--------------------- 1 file changed, 1 insertion(+), 21 deletions(-) --- a/arch/um/include/shared/init.h +++ b/arch/um/include/shared/init.h @@ -40,28 +40,8 @@ typedef int (*initcall_t)(void); typedef void (*exitcall_t)(void); -#ifdef __UM_HOST__ -#ifndef __section -# define __section(S) __attribute__ ((__section__(#S))) -#endif - -#if __GNUC__ == 3 - -#if __GNUC_MINOR__ >= 3 -# define __used __attribute__((__used__)) -#else -# define __used __attribute__((__unused__)) -#endif - -#else -#if __GNUC__ == 4 -# define __used __attribute__((__used__)) -#endif -#endif - -#else #include <linux/compiler.h> -#endif + /* These are for everybody (although not all archs will actually discard it in modules) */ #define __init __section(.init.text) Patches currently in stable-queue which might be from richard(a)nod.at are queue-3.18/um-stop-abusing-__kernel__.patch queue-3.18/um-link-vmlinux-with-no-pie.patch queue-3.18/um-remove-copy-paste-code-from-init.h.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "um: link vmlinux with -no-pie" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled um: link vmlinux with -no-pie to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: um-link-vmlinux-with-no-pie.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 883354afbc109c57f925ccc19840055193da0cc0 Mon Sep 17 00:00:00 2001 From: Thomas Meyer <thomas(a)m3y3r.de> Date: Sun, 20 Aug 2017 13:26:04 +0200 Subject: um: link vmlinux with -no-pie From: Thomas Meyer <thomas(a)m3y3r.de> commit 883354afbc109c57f925ccc19840055193da0cc0 upstream. Debian's gcc defaults to pie. The global Makefile already defines the -fno-pie option. Link UML dynamic kernel image also with -no-pie to fix the build. Signed-off-by: Thomas Meyer <thomas(a)m3y3r.de> Signed-off-by: Richard Weinberger <richard(a)nod.at> Cc: Bernie Innocenti <codewiz(a)google.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/um/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -116,7 +116,7 @@ archheaders: archprepare: include/generated/user_constants.h LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static -LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib +LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib $(call cc-option, -no-pie) CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \ $(call cc-option, -fno-stack-protector,) \ Patches currently in stable-queue which might be from thomas(a)m3y3r.de are queue-3.18/um-link-vmlinux-with-no-pie.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "Input: do not emit unneeded EV_SYN when suspending" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled Input: do not emit unneeded EV_SYN when suspending to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: input-do-not-emit-unneeded-ev_syn-when-suspending.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 00159f19a5057cb779146afce1cceede692af346 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov <dmitry.torokhov(a)gmail.com> Date: Thu, 6 Aug 2015 19:15:30 -0700 Subject: Input: do not emit unneeded EV_SYN when suspending From: Dmitry Torokhov <dmitry.torokhov(a)gmail.com> commit 00159f19a5057cb779146afce1cceede692af346 upstream. Do not emit EV_SYN/SYN_REPORT on suspend if there were no keys that are still pressed as we are suspending the device (and in all other cases when input core is forcibly releasing keys via input_dev_release_keys() call). Reviewed-by: Benson Leung <bleung(a)chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov(a)gmail.com> Signed-off-by: Bo Hu <bohu(a)google.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/input/input.c b/drivers/input/input.c index 78d24990a816..5391abd28b27 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -674,13 +674,19 @@ EXPORT_SYMBOL(input_close_device); */ static void input_dev_release_keys(struct input_dev *dev) { + bool need_sync = false; int code; if (is_event_supported(EV_KEY, dev->evbit, EV_MAX)) { - for_each_set_bit(code, dev->key, KEY_CNT) + for_each_set_bit(code, dev->key, KEY_CNT) { input_pass_event(dev, EV_KEY, code, 0); + need_sync = true; + } + + if (need_sync) + input_pass_event(dev, EV_SYN, SYN_REPORT, 1); + memset(dev->key, 0, sizeof(dev->key)); - input_pass_event(dev, EV_SYN, SYN_REPORT, 1); } } Patches currently in stable-queue which might be from dmitry.torokhov(a)gmail.com are queue-3.18/input-do-not-emit-unneeded-ev_syn-when-suspending.patch

7 years, 7 months

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Re: [Linux-stable-mirror] [PATCH v2] MIPS: fix incorrect mem=X@Y handling

by Mathieu Malaterre

Hi Marcin, Since it's been a week, could you confirm the patch is ok as-is or do you think some comment(s) from James should be incorporated ? On Tue, Jan 23, 2018 at 3:17 PM, James Hogan <jhogan(a)kernel.org> wrote: > On Thu, Dec 21, 2017 at 10:00:59PM +0100, Mathieu Malaterre wrote: >> From: Marcin Nowakowski <marcin.nowakowski(a)mips.com> >> >> Change 73fbc1eba7ff added a fix to ensure that the memory range between > > Please refer to commits with e.g. commit 73fbc1eba7ff ("MIPS: fix > mem=X@Y commandline processing"). > >> PHYS_OFFSET and low memory address specified by mem= cmdline argument is >> not later processed by free_all_bootmem. >> This change was incorrect for systems where the commandline specifies >> more than 1 mem argument, as it will cause all memory between >> PHYS_OFFSET and each of the memory offsets to be marked as reserved, >> which results in parts of the RAM marked as reserved (Creator CI20's >> u-boot has a default commandline argument 'mem=256M@0x0 >> mem=768M@0x30000000'). >> >> Change the behaviour to ensure that only the range between PHYS_OFFSET >> and the lowest start address of the memories is marked as protected. >> >> This change also ensures that the range is marked protected even if it's >> only defined through the devicetree and not only via commandline >> arguments. >> >> Reported-by: Mathieu Malaterre <mathieu.malaterre(a)gmail.com> >> Signed-off-by: Marcin Nowakowski <marcin.nowakowski(a)mips.com> >> Fixes: 73fbc1eba7ff ("MIPS: fix mem=X@Y commandline processing") >> Cc: <stable(a)vger.kernel.org> # v4.11 > > I'm guessing that should technically be v4.11+ My fault, if this is the only change, I can re-submit. >> --- >> v2: Use updated email adress, add tag for stable. >> arch/mips/kernel/setup.c | 19 ++++++++++++++++--- >> 1 file changed, 16 insertions(+), 3 deletions(-) >> >> diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c >> index 702c678de116..f19d61224c71 100644 >> --- a/arch/mips/kernel/setup.c >> +++ b/arch/mips/kernel/setup.c >> @@ -375,6 +375,7 @@ static void __init bootmem_init(void) >> unsigned long reserved_end; >> unsigned long mapstart = ~0UL; >> unsigned long bootmap_size; >> + phys_addr_t ramstart = ~0UL; > > Although practically it might not matter, technically phys_addr_t may be > 64-bits (CONFIG_PHYS_ADDR_T_64BIT) even on a 32-bit kernels, in which > case ~0UL may not be sufficiently large. > > Maybe that should be ~(phys_addr_t)0, or perhaps (phys_addr_t)ULLONG_MAX > to match add_memory_region(). > >> bool bootmap_valid = false; >> int i; >> >> @@ -395,6 +396,21 @@ static void __init bootmem_init(void) >> max_low_pfn = 0; >> >> /* >> + * Reserve any memory between the start of RAM and PHYS_OFFSET >> + */ >> + for (i = 0; i < boot_mem_map.nr_map; i++) { >> + if (boot_mem_map.map[i].type != BOOT_MEM_RAM) >> + continue; >> + >> + ramstart = min(ramstart, boot_mem_map.map[i].addr); > > Is it worth incorporating this into the existing loop below ... > >> + } >> + >> + if (ramstart > PHYS_OFFSET) >> + add_memory_region(PHYS_OFFSET, ramstart - PHYS_OFFSET, >> + BOOT_MEM_RESERVED); > > ... and this then placed below that loop? > > Otherwise I can't find fault with this patch, though i'm not intimately > familiar with bootmem. > > Cheers > James > >> + >> + >> + /* >> * Find the highest page frame number we have available. >> */ >> for (i = 0; i < boot_mem_map.nr_map; i++) { >> @@ -664,9 +680,6 @@ static int __init early_parse_mem(char *p) >> >> add_memory_region(start, size, BOOT_MEM_RAM); >> >> - if (start && start > PHYS_OFFSET) >> - add_memory_region(PHYS_OFFSET, start - PHYS_OFFSET, >> - BOOT_MEM_RESERVED); >> return 0; >> } >> early_param("mem", early_parse_mem); >> -- >> 2.11.0 >>

7 years, 7 months

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[Linux-stable-mirror] [PATCH] KVM: arm/arm64: Fix arch timers with userspace irqchips

by Christoffer Dall

When introducing support for irqchip in userspace we needed a way to mask the timer signal to prevent the guest continuously exiting due to a screaming timer. We did this by disabling the corresponding percpu interrupt on the host interrupt controller, because we cannot rely on the host system having a GIC, and therefore cannot make any assumptions about having an active state to hide the timer signal. Unfortunately, when introducing this feature, it became entirely possible that a VCPU which belongs to a VM that has a userspace irqchip can disable the vtimer irq on the host on some physical CPU, and then go away without ever enabling the vimter irq on that physical CPU again. This means that using irqchips in userspace on a system that also supports running VMs with an in-kernel GIC can prevent forward progress from in-kernel GIC VMs. Later on, when we started taking virtual timer interrupts in the arch timer code, we would also leave this timer state active for userspace irqchip VMs, because we leave it up to a VGIC-enabled guest to deactivate the hardware IRQ using the HW bit in the LR. Both issues are solved by only using the enable/disable trick on systems that do not have a host GIC which supports the active state, because all VMs on such systems must use irqchips in userspace. Systems that have a working GIC with support for an active state use the active state to mask the timer signal for both userspace an in-kernel irqchips. Cc: Alexander Graf <agraf(a)suse.de> Cc: <stable(a)vger.kernel.org> # v4.12+ Fixes: d9e139778376 ("KVM: arm/arm64: Support arch timers with a userspace gic") Signed-off-by: Christoffer Dall <christoffer.dall(a)linaro.org> --- This conflicts horribly with everything when applied to either kvmarm/queue or kvmarm/master. Therefore, this patch is written for (and applies to) v4.15 with kvmarm/queue merged and should therefore apply cleanly after v4.16-rc1. An example with this patch applied can be found on kvmarm/temp-for-v4.16-rc2. I plan on sending this along with any other potential fixes post v4.16-rc1. virt/kvm/arm/arch_timer.c | 77 ++++++++++++++++++++++++++--------------------- 1 file changed, 42 insertions(+), 35 deletions(-) diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 70268c0bec79..228906ceb722 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -35,6 +35,7 @@ static struct timecounter *timecounter; static unsigned int host_vtimer_irq; static u32 host_vtimer_irq_flags; +static bool has_gic_active_state; static const struct kvm_irq_level default_ptimer_irq = { .irq = 30, @@ -69,25 +70,6 @@ static void soft_timer_cancel(struct hrtimer *hrt, struct work_struct *work) cancel_work_sync(work); } -static void kvm_vtimer_update_mask_user(struct kvm_vcpu *vcpu) -{ - struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); - - /* - * When using a userspace irqchip with the architected timers, we must - * prevent continuously exiting from the guest, and therefore mask the - * physical interrupt by disabling it on the host interrupt controller - * when the virtual level is high, such that the guest can make - * forward progress. Once we detect the output level being - * de-asserted, we unmask the interrupt again so that we exit from the - * guest when the timer fires. - */ - if (vtimer->irq.level) - disable_percpu_irq(host_vtimer_irq); - else - enable_percpu_irq(host_vtimer_irq, 0); -} - static irqreturn_t kvm_arch_timer_handler(int irq, void *dev_id) { struct kvm_vcpu *vcpu = *(struct kvm_vcpu **)dev_id; @@ -107,8 +89,8 @@ static irqreturn_t kvm_arch_timer_handler(int irq, void *dev_id) kvm_timer_update_irq(vcpu, true, vtimer); if (static_branch_unlikely(&userspace_irqchip_in_use) && - unlikely(!irqchip_in_kernel(vcpu->kvm))) - kvm_vtimer_update_mask_user(vcpu); + unlikely(!irqchip_in_kernel(vcpu->kvm)) && !has_gic_active_state) + disable_percpu_irq(host_vtimer_irq); return IRQ_HANDLED; } @@ -460,13 +442,16 @@ static void set_cntvoff(u64 cntvoff) kvm_call_hyp(__kvm_timer_set_cntvoff, low, high); } -static void kvm_timer_vcpu_load_vgic(struct kvm_vcpu *vcpu) +static void kvm_timer_vcpu_load_gic(struct kvm_vcpu *vcpu) { struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); bool phys_active; int ret; - phys_active = kvm_vgic_map_is_active(vcpu, vtimer->irq.irq); + if (irqchip_in_kernel(vcpu->kvm)) + phys_active = kvm_vgic_map_is_active(vcpu, vtimer->irq.irq); + else + phys_active = vtimer->irq.level; ret = irq_set_irqchip_state(host_vtimer_irq, IRQCHIP_STATE_ACTIVE, @@ -474,9 +459,24 @@ static void kvm_timer_vcpu_load_vgic(struct kvm_vcpu *vcpu) WARN_ON(ret); } -static void kvm_timer_vcpu_load_user(struct kvm_vcpu *vcpu) +static void kvm_timer_vcpu_load_nogic(struct kvm_vcpu *vcpu) { - kvm_vtimer_update_mask_user(vcpu); + struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); + + /* + * When using a userspace irqchip with the architected timers and a + * host interrupt controller that doesn't support an active state, we + * must still we must prevent continuously exiting from the guest, and + * therefore mask the physical interrupt by disabling it on the host + * interrupt controller when the virtual level is high, such that the + * guest can make forward progress. Once we detect the output level + * being de-asserted, we unmask the interrupt again so that we exit + * from the guest when the timer fires. + */ + if (vtimer->irq.level) + disable_percpu_irq(host_vtimer_irq); + else + enable_percpu_irq(host_vtimer_irq, host_vtimer_irq_flags); } void kvm_timer_vcpu_load(struct kvm_vcpu *vcpu) @@ -487,10 +487,10 @@ void kvm_timer_vcpu_load(struct kvm_vcpu *vcpu) if (unlikely(!timer->enabled)) return; - if (unlikely(!irqchip_in_kernel(vcpu->kvm))) - kvm_timer_vcpu_load_user(vcpu); + if (has_gic_active_state) + kvm_timer_vcpu_load_gic(vcpu); else - kvm_timer_vcpu_load_vgic(vcpu); + kvm_timer_vcpu_load_nogic(vcpu); set_cntvoff(vtimer->cntvoff); @@ -555,18 +555,23 @@ static void unmask_vtimer_irq_user(struct kvm_vcpu *vcpu) { struct arch_timer_context *vtimer = vcpu_vtimer(vcpu); - if (unlikely(!irqchip_in_kernel(vcpu->kvm))) { - __timer_snapshot_state(vtimer); - if (!kvm_timer_should_fire(vtimer)) { - kvm_timer_update_irq(vcpu, false, vtimer); - kvm_vtimer_update_mask_user(vcpu); - } + __timer_snapshot_state(vtimer); + if (!kvm_timer_should_fire(vtimer)) { + kvm_timer_update_irq(vcpu, false, vtimer); + if (!has_gic_active_state) + enable_percpu_irq(host_vtimer_irq, host_vtimer_irq_flags); } } void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu) { - unmask_vtimer_irq_user(vcpu); + struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu; + + if (unlikely(!timer->enabled)) + return; + + if (unlikely(!irqchip_in_kernel(vcpu->kvm))) + unmask_vtimer_irq_user(vcpu); } int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu) @@ -753,6 +758,8 @@ int kvm_timer_hyp_init(bool has_gic) kvm_err("kvm_arch_timer: error setting vcpu affinity\n"); goto out_free_irq; } + + has_gic_active_state = true; } kvm_info("virtual timer IRQ%d\n", host_vtimer_irq); -- 2.14.2

7 years, 7 months

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[Linux-stable-mirror] [PATCH] drm/cirrus: Load lut in crtc_commit

by Daniel Vetter

In the past the ast driver relied upon the fbdev emulation helpers to call ->load_lut at boot-up. But since commit b8e2b0199cc377617dc238f5106352c06dcd3fa2 Author: Peter Rosin <peda(a)axentia.se> Date: Tue Jul 4 12:36:57 2017 +0200 drm/fb-helper: factor out pseudo-palette that's cleaned up and drivers are expected to boot into a consistent lut state. This patch fixes that. Fixes: b8e2b0199cc3 ("drm/fb-helper: factor out pseudo-palette") Cc: Peter Rosin <peda(a)axenita.se> Cc: Daniel Vetter <daniel.vetter(a)ffwll.ch> Cc: <stable(a)vger.kernel.org> # v4.14+ References: https://bugzilla.kernel.org/show_bug.cgi?id=198123 Signed-off-by: Daniel Vetter <daniel.vetter(a)intel.com> --- drivers/gpu/drm/cirrus/cirrus_mode.c | 40 +++++++++++++++++++++--------------- 1 file changed, 23 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/cirrus/cirrus_mode.c b/drivers/gpu/drm/cirrus/cirrus_mode.c index cd23b1b28259..c91b9b054e3f 100644 --- a/drivers/gpu/drm/cirrus/cirrus_mode.c +++ b/drivers/gpu/drm/cirrus/cirrus_mode.c @@ -294,22 +294,7 @@ static void cirrus_crtc_prepare(struct drm_crtc *crtc) { } -/* - * This is called after a mode is programmed. It should reverse anything done - * by the prepare function - */ -static void cirrus_crtc_commit(struct drm_crtc *crtc) -{ -} - -/* - * The core can pass us a set of gamma values to program. We actually only - * use this for 8-bit mode so can't perform smooth fades on deeper modes, - * but it's a requirement that we provide the function - */ -static int cirrus_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, - u16 *blue, uint32_t size, - struct drm_modeset_acquire_ctx *ctx) +static void cirrus_crtc_load_lut(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; struct cirrus_device *cdev = dev->dev_private; @@ -317,7 +302,7 @@ static int cirrus_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, int i; if (!crtc->enabled) - return 0; + return; r = crtc->gamma_store; g = r + crtc->gamma_size; @@ -330,6 +315,27 @@ static int cirrus_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, WREG8(PALETTE_DATA, *g++ >> 8); WREG8(PALETTE_DATA, *b++ >> 8); } +} + +/* + * This is called after a mode is programmed. It should reverse anything done + * by the prepare function + */ +static void cirrus_crtc_commit(struct drm_crtc *crtc) +{ + cirrus_crtc_load_lut(crtc); +} + +/* + * The core can pass us a set of gamma values to program. We actually only + * use this for 8-bit mode so can't perform smooth fades on deeper modes, + * but it's a requirement that we provide the function + */ +static int cirrus_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, + u16 *blue, uint32_t size, + struct drm_modeset_acquire_ctx *ctx) +{ + cirrus_crtc_load_lut(crtc); return 0; } -- 2.15.1

7 years, 7 months

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[Linux-stable-mirror] [PATCH] drm/ast: Load lut in crtc_commit

by Daniel Vetter

In the past the ast driver relied upon the fbdev emulation helpers to call ->load_lut at boot-up. But since commit b8e2b0199cc377617dc238f5106352c06dcd3fa2 Author: Peter Rosin <peda(a)axentia.se> Date: Tue Jul 4 12:36:57 2017 +0200 drm/fb-helper: factor out pseudo-palette that's cleaned up and drivers are expected to boot into a consistent lut state. This patch fixes that. Fixes: b8e2b0199cc3 ("drm/fb-helper: factor out pseudo-palette") Cc: Peter Rosin <peda(a)axenita.se> Cc: Daniel Vetter <daniel.vetter(a)ffwll.ch> Cc: <stable(a)vger.kernel.org> # v4.14+ Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=198123 Cc: Bill Fraser <bill.fraser(a)gmail.com> Reported-and-Tested-by: Bill Fraser <bill.fraser(a)gmail.com> Tested-by: Konstantin Khlebnikov <koct9i(a)gmail.com> Tested-by: Paul Tobias <tobias.pal(a)gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter(a)intel.com> --- drivers/gpu/drm/ast/ast_mode.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c index 9555a3542022..831b73392d82 100644 --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -644,6 +644,7 @@ static void ast_crtc_commit(struct drm_crtc *crtc) { struct ast_private *ast = crtc->dev->dev_private; ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0); + ast_crtc_load_lut(crtc); } -- 2.15.1

7 years, 7 months

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[Linux-stable-mirror] [PATCH v8] mmc: sdhci: Implement an SDHCI-specific bounce buffer

by Linus Walleij

The bounce buffer is gone from the MMC core, and now we found out that there are some (crippled) i.MX boards out there that have broken ADMA (cannot do scatter-gather), and also broken PIO so they must use SDMA. Closer examination shows a less significant slowdown also on SDMA-only capable Laptop hosts. SDMA sets down the number of segments to one, so that each segment gets turned into a singular request that ping-pongs to the block layer before the next request/segment is issued. Apparently it happens a lot that the block layer send requests that include a lot of physically discontiguous segments. My guess is that this phenomenon is coming from the file system. These devices that cannot handle scatterlists in hardware can see major benefits from a DMA-contiguous bounce buffer. This patch accumulates those fragmented scatterlists in a physically contiguous bounce buffer so that we can issue bigger DMA data chunks to/from the card. When tested with a PCI-integrated host (1217:8221) that only supports SDMA: 0b:00.0 SD Host controller: O2 Micro, Inc. OZ600FJ0/OZ900FJ0/OZ600FJS SD/MMC Card Reader Controller (rev 05) This patch gave ~1Mbyte/s improved throughput on large reads and writes when testing using iozone than without the patch. dmesg: sdhci-pci 0000:0b:00.0: SDHCI controller found [1217:8221] (rev 5) mmc0 bounce up to 128 segments into one, max segment size 65536 bytes mmc0: SDHCI controller on PCI [0000:0b:00.0] using DMA On the i.MX SDHCI controllers on the crippled i.MX 25 and i.MX 35 the patch restores the performance to what it was before we removed the bounce buffers. Cc: Pierre Ossman <pierre(a)ossman.eu> Cc: Benoît Thébaudeau <benoit(a)wsystem.com> Cc: Fabio Estevam <fabio.estevam(a)nxp.com> Cc: Benjamin Beckmeyer <beckmeyer.b(a)rittal.de> Cc: stable(a)vger.kernel.org # v4.14+ Fixes: de3ee99b097d ("mmc: Delete bounce buffer handling") Tested-by: Benjamin Beckmeyer <beckmeyer.b(a)rittal.de> Acked-by: Adrian Hunter <adrian.hunter(a)intel.com> Signed-off-by: Linus Walleij <linus.walleij(a)linaro.org> --- ChangeLog v7->v8: - Fixed bad information and spelling mistakes in the commit message. - Use sdhci_sdma_address() in one more spot identified by Adrian. - Collected Adrian's ACK. ChangeLog v6->v7: - Fix the directions on dma_sync_for[device|cpu]() so the ownership of the buffer gets swapped properly and in the right direction for every transfer. Didn't see this because x86 PCI is DMA coherent... - Tested and greelighted on i.MX 25. - Also tested on the PCI version. ChangeLog v5->v6: - Again switch back to explicit sync of buffers. I want to get this solution to work because it gives more control and it's more elegant. - Update host->max_req_size as noted by Adrian, hopefully this fixes the i.MX. I was just lucky on my Intel laptop I guess: the block stack never requested anything bigger than 64KB and that was why it worked even if max_req_size was bigger than what would fit in the bounce buffer. - Copy the number of bytes in the mmc_data instead of the number of bytes in the bounce buffer. For RX this is blksize * blocks and for TX this is bytes_xfered. - Break out a sdhci_sdma_address() for getting the DMA address for either the raw sglist or the bounce buffer depending on configuration. - Add some explicit bounds check for the data so that we do not attempt to copy more than the bounce buffer size even if the block layer is erroneously configured. - Move allocation of bounce buffer out to its own function. - Use pr_[info|err] throughout so all debug prints from the driver come out in the same manner and style. - Use unsigned int for the bounce buffer size. - Re-tested with iozone: we still get the same nice performance improvements. - Request a text on i.MX (hi Benjamin) ChangeLog v4->v5: - Go back to dma_alloc_coherent() as this apparently works better. - Keep the other changes, cap for 64KB, fall back to single segments. - Requesting a test of this on i.MX. (Sorry Benjamin.) ChangeLog v3->v4: - Cap the bounce buffer to 64KB instead of the biggest segment as we experience diminishing returns with buffers > 64KB. - Instead of using dma_alloc_coherent(), use good old devm_kmalloc() and issue dma_sync_single_for*() to explicitly switch ownership between CPU and the device. This way we exercise the cache better and may consume less CPU. - Bail out with single segments if we cannot allocate a bounce buffer. - Tested on the PCI SDHCI on my laptop: requesting a new test on i.MX from Benjamin. (Please!) ChangeLog v2->v3: - Rewrite the commit message a bit - Add Benjamin's Tested-by - Add Fixes and stable tags ChangeLog v1->v2: - Skip the remapping and fiddling with the buffer, instead use dma_alloc_coherent() and use a simple, coherent bounce buffer. - Couple kernel messages to ->parent of the mmc_host as it relates to the hardware characteristics. --- drivers/mmc/host/sdhci.c | 164 ++++++++++++++++++++++++++++++++++++++++++++--- drivers/mmc/host/sdhci.h | 3 + 2 files changed, 159 insertions(+), 8 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index e9290a3439d5..d24306b2b839 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -21,6 +21,7 @@ #include <linux/dma-mapping.h> #include <linux/slab.h> #include <linux/scatterlist.h> +#include <linux/sizes.h> #include <linux/swiotlb.h> #include <linux/regulator/consumer.h> #include <linux/pm_runtime.h> @@ -502,8 +503,35 @@ static int sdhci_pre_dma_transfer(struct sdhci_host *host, if (data->host_cookie == COOKIE_PRE_MAPPED) return data->sg_count; - sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - mmc_get_dma_dir(data)); + /* Bounce write requests to the bounce buffer */ + if (host->bounce_buffer) { + unsigned int length = data->blksz * data->blocks; + + if (length > host->bounce_buffer_size) { + pr_err("%s: asked for transfer of %u bytes exceeds bounce buffer %u bytes\n", + mmc_hostname(host->mmc), length, + host->bounce_buffer_size); + return -EIO; + } + if (mmc_get_dma_dir(data) == DMA_TO_DEVICE) { + /* Copy the data to the bounce buffer */ + sg_copy_to_buffer(data->sg, data->sg_len, + host->bounce_buffer, + length); + } + /* Switch ownership to the DMA */ + dma_sync_single_for_device(host->mmc->parent, + host->bounce_addr, + host->bounce_buffer_size, + mmc_get_dma_dir(data)); + /* Just a dummy value */ + sg_count = 1; + } else { + /* Just access the data directly from memory */ + sg_count = dma_map_sg(mmc_dev(host->mmc), + data->sg, data->sg_len, + mmc_get_dma_dir(data)); + } if (sg_count == 0) return -ENOSPC; @@ -673,6 +701,14 @@ static void sdhci_adma_table_post(struct sdhci_host *host, } } +static u32 sdhci_sdma_address(struct sdhci_host *host) +{ + if (host->bounce_buffer) + return host->bounce_addr; + else + return sg_dma_address(host->data->sg); +} + static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd) { u8 count; @@ -858,8 +894,8 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd) SDHCI_ADMA_ADDRESS_HI); } else { WARN_ON(sg_cnt != 1); - sdhci_writel(host, sg_dma_address(data->sg), - SDHCI_DMA_ADDRESS); + sdhci_writel(host, sdhci_sdma_address(host), + SDHCI_DMA_ADDRESS); } } @@ -2248,7 +2284,12 @@ static void sdhci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq) mrq->data->host_cookie = COOKIE_UNMAPPED; - if (host->flags & SDHCI_REQ_USE_DMA) + /* + * No pre-mapping in the pre hook if we're using the bounce buffer, + * for that we would need two bounce buffers since one buffer is + * in flight when this is getting called. + */ + if (host->flags & SDHCI_REQ_USE_DMA && !host->bounce_buffer) sdhci_pre_dma_transfer(host, mrq->data, COOKIE_PRE_MAPPED); } @@ -2352,8 +2393,45 @@ static bool sdhci_request_done(struct sdhci_host *host) struct mmc_data *data = mrq->data; if (data && data->host_cookie == COOKIE_MAPPED) { - dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - mmc_get_dma_dir(data)); + if (host->bounce_buffer) { + /* + * On reads, copy the bounced data into the + * sglist + */ + if (mmc_get_dma_dir(data) == DMA_FROM_DEVICE) { + unsigned int length = data->bytes_xfered; + + if (length > host->bounce_buffer_size) { + pr_err("%s: bounce buffer is %u bytes but DMA claims to have transferred %u bytes\n", + mmc_hostname(host->mmc), + host->bounce_buffer_size, + data->bytes_xfered); + /* Cap it down and continue */ + length = host->bounce_buffer_size; + } + dma_sync_single_for_cpu( + host->mmc->parent, + host->bounce_addr, + host->bounce_buffer_size, + DMA_FROM_DEVICE); + sg_copy_from_buffer(data->sg, + data->sg_len, + host->bounce_buffer, + length); + } else { + /* No copying, just switch ownership */ + dma_sync_single_for_cpu( + host->mmc->parent, + host->bounce_addr, + host->bounce_buffer_size, + mmc_get_dma_dir(data)); + } + } else { + /* Unmap the raw data */ + dma_unmap_sg(mmc_dev(host->mmc), data->sg, + data->sg_len, + mmc_get_dma_dir(data)); + } data->host_cookie = COOKIE_UNMAPPED; } } @@ -2636,7 +2714,8 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) */ if (intmask & SDHCI_INT_DMA_END) { u32 dmastart, dmanow; - dmastart = sg_dma_address(host->data->sg); + + dmastart = sdhci_sdma_address(host); dmanow = dmastart + host->data->bytes_xfered; /* * Force update to the next DMA block boundary. @@ -3217,6 +3296,68 @@ void __sdhci_read_caps(struct sdhci_host *host, u16 *ver, u32 *caps, u32 *caps1) } EXPORT_SYMBOL_GPL(__sdhci_read_caps); +static int sdhci_allocate_bounce_buffer(struct sdhci_host *host) +{ + struct mmc_host *mmc = host->mmc; + unsigned int max_blocks; + unsigned int bounce_size; + int ret; + + /* + * Cap the bounce buffer at 64KB. Using a bigger bounce buffer + * has diminishing returns, this is probably because SD/MMC + * cards are usually optimized to handle this size of requests. + */ + bounce_size = SZ_64K; + /* + * Adjust downwards to maximum request size if this is less + * than our segment size, else hammer down the maximum + * request size to the maximum buffer size. + */ + if (mmc->max_req_size < bounce_size) + bounce_size = mmc->max_req_size; + max_blocks = bounce_size / 512; + + /* + * When we just support one segment, we can get significant + * speedups by the help of a bounce buffer to group scattered + * reads/writes together. + */ + host->bounce_buffer = devm_kmalloc(mmc->parent, + bounce_size, + GFP_KERNEL); + if (!host->bounce_buffer) { + pr_err("%s: failed to allocate %u bytes for bounce buffer, falling back to single segments\n", + mmc_hostname(mmc), + bounce_size); + /* + * Exiting with zero here makes sure we proceed with + * mmc->max_segs == 1. + */ + return 0; + } + + host->bounce_addr = dma_map_single(mmc->parent, + host->bounce_buffer, + bounce_size, + DMA_BIDIRECTIONAL); + ret = dma_mapping_error(mmc->parent, host->bounce_addr); + if (ret) + /* Again fall back to max_segs == 1 */ + return 0; + host->bounce_buffer_size = bounce_size; + + /* Lie about this since we're bouncing */ + mmc->max_segs = max_blocks; + mmc->max_seg_size = bounce_size; + mmc->max_req_size = bounce_size; + + pr_info("%s bounce up to %u segments into one, max segment size %u bytes\n", + mmc_hostname(mmc), max_blocks, bounce_size); + + return 0; +} + int sdhci_setup_host(struct sdhci_host *host) { struct mmc_host *mmc; @@ -3713,6 +3854,13 @@ int sdhci_setup_host(struct sdhci_host *host) */ mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535; + if (mmc->max_segs == 1) { + /* This may alter mmc->*_blk_* parameters */ + ret = sdhci_allocate_bounce_buffer(host); + if (ret) + return ret; + } + return 0; unreg: diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 54bc444c317f..1d7d61e25dbf 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -440,6 +440,9 @@ struct sdhci_host { int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ + char *bounce_buffer; /* For packing SDMA reads/writes */ + dma_addr_t bounce_addr; + unsigned int bounce_buffer_size; const struct sdhci_ops *ops; /* Low level hw interface */ -- 2.14.3

7 years, 7 months

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[Linux-stable-mirror] [PULL 24/28] KVM: arm/arm64: Handle CPU_PM_ENTER_FAILED

by Christoffer Dall

From: James Morse <james.morse(a)arm.com> cpu_pm_enter() calls the pm notifier chain with CPU_PM_ENTER, then if there is a failure: CPU_PM_ENTER_FAILED. When KVM receives CPU_PM_ENTER it calls cpu_hyp_reset() which will return us to the hyp-stub. If we subsequently get a CPU_PM_ENTER_FAILED, KVM does nothing, leaving the CPU running with the hyp-stub, at odds with kvm_arm_hardware_enabled. Add CPU_PM_ENTER_FAILED as a fallthrough for CPU_PM_EXIT, this reloads KVM based on kvm_arm_hardware_enabled. This is safe even if CPU_PM_ENTER never gets as far as KVM, as cpu_hyp_reinit() calls cpu_hyp_reset() to make sure the hyp-stub is loaded before reloading KVM. Fixes: 67f691976662 ("arm64: kvm: allows kvm cpu hotplug") Cc: <stable(a)vger.kernel.org> # v4.7+ CC: Lorenzo Pieralisi <lorenzo.pieralisi(a)arm.com> Reviewed-by: Christoffer Dall <christoffer.dall(a)linaro.org> Signed-off-by: James Morse <james.morse(a)arm.com> Signed-off-by: Christoffer Dall <christoffer.dall(a)linaro.org> --- virt/kvm/arm/arm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c index 59d8e04c19fa..639dca0c0560 100644 --- a/virt/kvm/arm/arm.c +++ b/virt/kvm/arm/arm.c @@ -1262,6 +1262,7 @@ static int hyp_init_cpu_pm_notifier(struct notifier_block *self, cpu_hyp_reset(); return NOTIFY_OK; + case CPU_PM_ENTER_FAILED: case CPU_PM_EXIT: if (__this_cpu_read(kvm_arm_hardware_enabled)) /* The hardware was enabled before suspend. */ -- 2.14.2

7 years, 7 months

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[Linux-stable-mirror] [PATCH] cpufreq: governor: Ensure sufficiently large sampling intervals

by Viresh Kumar

From: "Rafael J. Wysocki" <rafael.j.wysocki(a)intel.com> [ Upstream commit 56026645e2b6f11ede34a5e6ab69d3eb56f9c8fc ] After commit aa7519af450d (cpufreq: Use transition_delay_us for legacy governors as well) the sampling_rate field of struct dbs_data may be less than the tick period which causes dbs_update() to produce incorrect results, so make the code ensure that the value of that field will always be sufficiently large. Cc: 4.14 <stable(a)vger.kernel.org> # 4.14 Fixes: aa7519af450d (cpufreq: Use transition_delay_us for legacy governors as well) Reported-by: Andy Tang <andy.tang(a)nxp.com> Reported-by: Doug Smythies <dsmythies(a)telus.net> Tested-by: Andy Tang <andy.tang(a)nxp.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Acked-by: Viresh Kumar <viresh.kumar(a)linaro.org> --- drivers/cpufreq/cpufreq_governor.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c index 58d4f4e1ad6a..ca38229b045a 100644 --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -22,6 +22,8 @@ #include "cpufreq_governor.h" +#define CPUFREQ_DBS_MIN_SAMPLING_INTERVAL (2 * TICK_NSEC / NSEC_PER_USEC) + static DEFINE_PER_CPU(struct cpu_dbs_info, cpu_dbs); static DEFINE_MUTEX(gov_dbs_data_mutex); @@ -47,11 +49,15 @@ ssize_t store_sampling_rate(struct gov_attr_set *attr_set, const char *buf, { struct dbs_data *dbs_data = to_dbs_data(attr_set); struct policy_dbs_info *policy_dbs; + unsigned int sampling_interval; int ret; - ret = sscanf(buf, "%u", &dbs_data->sampling_rate); - if (ret != 1) + + ret = sscanf(buf, "%u", &sampling_interval); + if (ret != 1 || sampling_interval < CPUFREQ_DBS_MIN_SAMPLING_INTERVAL) return -EINVAL; + dbs_data->sampling_rate = sampling_interval; + /* * We are operating under dbs_data->mutex and so the list and its * entries can't be freed concurrently. @@ -430,7 +436,14 @@ int cpufreq_dbs_governor_init(struct cpufreq_policy *policy) if (ret) goto free_policy_dbs_info; - dbs_data->sampling_rate = cpufreq_policy_transition_delay_us(policy); + /* + * The sampling interval should not be less than the transition latency + * of the CPU and it also cannot be too small for dbs_update() to work + * correctly. + */ + dbs_data->sampling_rate = max_t(unsigned int, + CPUFREQ_DBS_MIN_SAMPLING_INTERVAL, + cpufreq_policy_transition_delay_us(policy)); if (!have_governor_per_policy()) gov->gdbs_data = dbs_data; -- 2.15.0.194.g9af6a3dea062

7 years, 7 months

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[Linux-stable-mirror] [PATCH 3.18 00/52] 3.18.93-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 3.18.93 release. There are 52 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Wed Jan 31 12:36:07 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: kernel.org/pub/linux/kernel/v3.x/stable-review/patch-3.18.93-rc1.gz or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-3.18.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 3.18.93-rc1 Jim Westfall <jwestfall(a)surrealistic.net> ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY Mike Maloney <maloney(a)google.com> ipv6: fix udpv6 sendmsg crash caused by too small MTU Jim Westfall <jwestfall(a)surrealistic.net> net: Allow neigh contructor functions ability to modify the primary_key Neil Horman <nhorman(a)tuxdriver.com> vmxnet3: repair memory leak Xin Long <lucien.xin(a)gmail.com> sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf Xin Long <lucien.xin(a)gmail.com> sctp: do not allow the v4 socket to bind a v4mapped v6 address Guillaume Nault <g.nault(a)alphalink.fr> pppoe: take ->needed_headroom of lower device into account on xmit Eric Dumazet <edumazet(a)google.com> net: qdisc_pkt_len_init() should be more robust Craig Gallek <kraig(a)google.com> tcp: __tcp_hdrlen() helper Felix Fietkau <nbd(a)nbd.name> net: igmp: fix source address check for IGMPv3 reports Alexey Kodanev <alexey.kodanev(a)oracle.com> dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed state Dan Streetman <ddstreet(a)ieee.org> net: tcp: close sock if net namespace is exiting Jia Zhang <zhang.jia(a)linux.alibaba.com> x86/microcode/intel: Extend BDW late-loading further with LLC size check Richard Weinberger <richard(a)nod.at> um: Remove copy&paste code from init.h Richard Weinberger <richard(a)nod.at> um: Stop abusing __KERNEL__ Greg KH <gregkh(a)linuxfoundation.org> eventpoll.h: add missing epoll event masks Thomas Meyer <thomas(a)m3y3r.de> um: link vmlinux with -no-pie Johannes Thumshirn <jthumshirn(a)suse.de> scsi: libiscsi: fix shifting of DID_REQUEUE host byte Jiri Slaby <jslaby(a)suse.cz> fs/fcntl: f_setown, avoid undefined behaviour Jeff Mahoney <jeffm(a)suse.com> reiserfs: don't preallocate blocks for extended attributes Jeff Mahoney <jeffm(a)suse.com> reiserfs: fix race in prealloc discard Kevin Cernekee <cernekee(a)chromium.org> netfilter: xt_osf: Add missing permission checks Kevin Cernekee <cernekee(a)chromium.org> netfilter: nfnetlink_cthelper: Add missing permission checks Ulrich Weber <ulrich.weber(a)riverbed.com> netfilter: nf_conntrack_sip: extend request line validation Florian Westphal <fw(a)strlen.de> netfilter: restart search if moved to other chain Liping Zhang <liping.zhang(a)spreadtrum.com> netfilter: nf_ct_expect: remove the redundant slash when policy name is empty Jiri Slaby <jslaby(a)suse.cz> ipc: msg, make msgrcv work with LONG_MIN Michal Hocko <mhocko(a)suse.com> hwpoison, memcg: forcibly uncharge LRU pages Michal Hocko <mhocko(a)suse.com> mm/mmap.c: do not blow on PROT_NONE MAP_FIXED holes in the stack Marc Kleine-Budde <mkl(a)pengutronix.de> can: af_can: canfd_rcv(): replace WARN_ONCE by pr_warn_once Marc Kleine-Budde <mkl(a)pengutronix.de> can: af_can: can_rcv(): replace WARN_ONCE by pr_warn_once Jonathan Dieter <jdieter(a)lesbg.com> usbip: Fix implicit fallthrough warning Andy Lutomirski <luto(a)kernel.org> x86/asm/32: Make sync_core() handle missing CPUID on all 32-bit kernels Jonas Gorski <jonas.gorski(a)gmail.com> MIPS: AR7: ensure the port type's FCR value is used Marc Zyngier <marc.zyngier(a)arm.com> arm64: KVM: Fix SMCCC handling of unimplemented SMC/HVC calls Dennis Yang <dennisyang(a)qnap.com> dm thin metadata: THIN_MAX_CONCURRENT_LOCKS should be 6 Joe Thornber <thornber(a)redhat.com> dm btree: fix serious bug in btree_split_beneath() Thomas Petazzoni <thomas.petazzoni(a)free-electrons.com> ARM: dts: kirkwood: fix pin-muxing of MPP7 on OpenBlocks A7 Arnd Bergmann <arnd(a)arndb.de> phy: work around 'phys' references to usb-nop-xceiv devices Johan Hovold <johan(a)kernel.org> Input: twl4030-vibra - fix sibling-node lookup Marek Belisko <marek(a)goldelico.com> Input: twl4030-vibra - fix ERROR: Bad of_node_put() warning Johan Hovold <johan(a)kernel.org> Input: twl6040-vibra - fix child-node lookup H. Nikolaus Schaller <hns(a)goldelico.com> Input: twl6040-vibra - fix DT node memory management Johan Hovold <johan(a)kernel.org> Input: 88pm860x-ts - fix child-node lookup Joe Lawrence <joe.lawrence(a)redhat.com> pipe: avoid round_pipe_size() nr_pages overflow on 32-bit Eric Biggers <ebiggers(a)google.com> af_key: fix buffer overread in parse_exthdrs() Eric Biggers <ebiggers(a)google.com> af_key: fix buffer overread in verify_address_len() Takashi Iwai <tiwai(a)suse.de> ALSA: hda - Apply the existing quirk to iMac 14,1 Takashi Iwai <tiwai(a)suse.de> ALSA: pcm: Remove yet superfluous WARN_ON() Li Jinyue <lijinyue(a)huawei.com> futex: Prevent overflow by strengthen input validation Hannes Reinecke <hare(a)suse.de> scsi: sg: disable SET_FORCE_LOW_DMA Arnd Bergmann <arnd(a)arndb.de> gcov: disable for COMPILE_TEST ------------- Diffstat: Makefile | 4 ++-- arch/arm/boot/dts/kirkwood-openblocks_a7.dts | 10 ++++++++-- arch/arm64/kvm/handle_exit.c | 4 ++-- arch/mips/ar7/platform.c | 2 +- arch/um/Makefile | 9 +++++---- arch/um/drivers/mconsole.h | 2 +- arch/um/include/shared/init.h | 24 ++-------------------- arch/um/include/shared/user.h | 2 +- arch/x86/include/asm/processor.h | 2 +- arch/x86/kernel/cpu/microcode/intel.c | 20 +++++++++++++++++-- arch/x86/um/shared/sysdep/tls.h | 6 +++--- drivers/input/misc/twl4030-vibra.c | 7 +++++-- drivers/input/misc/twl6040-vibra.c | 2 +- drivers/input/touchscreen/88pm860x-ts.c | 16 +++++++++++---- drivers/md/dm-thin-metadata.c | 6 +++++- drivers/md/persistent-data/dm-btree.c | 19 ++---------------- drivers/net/ppp/pppoe.c | 11 +++++----- drivers/net/vmxnet3/vmxnet3_drv.c | 2 +- drivers/phy/phy-core.c | 4 ++++ drivers/scsi/libiscsi.c | 2 +- drivers/scsi/sg.c | 30 +++++++++------------------- fs/fcntl.c | 4 ++++ fs/pipe.c | 18 +++++++++++++++-- fs/reiserfs/bitmap.c | 14 ++++++++++--- include/linux/tcp.h | 7 ++++++- include/net/arp.h | 3 +++ include/net/net_namespace.h | 10 ++++++++++ include/scsi/sg.h | 1 - include/uapi/linux/eventpoll.h | 13 ++++++++++++ ipc/msg.c | 5 ++++- kernel/futex.c | 3 +++ kernel/gcov/Kconfig | 1 + mm/memcontrol.c | 2 +- mm/memory-failure.c | 7 +++++++ mm/mmap.c | 6 ++++-- net/can/af_can.c | 22 ++++++++++---------- net/core/dev.c | 19 ++++++++++++++---- net/core/neighbour.c | 4 ++-- net/dccp/ccids/ccid2.c | 3 +++ net/ipv4/arp.c | 7 ++++++- net/ipv4/igmp.c | 2 +- net/ipv4/tcp.c | 3 +++ net/ipv4/tcp_timer.c | 15 ++++++++++++++ net/ipv6/ip6_output.c | 6 ++++-- net/key/af_key.c | 8 ++++++++ net/netfilter/nf_conntrack_core.c | 7 +++++++ net/netfilter/nf_conntrack_expect.c | 2 +- net/netfilter/nf_conntrack_sip.c | 5 ++++- net/netfilter/nfnetlink_cthelper.c | 10 ++++++++++ net/netfilter/xt_osf.c | 7 +++++++ net/sctp/socket.c | 30 +++++++++++----------------- sound/core/pcm_lib.c | 1 - sound/pci/hda/patch_cirrus.c | 1 + tools/usb/usbip/src/usbip.c | 2 ++ 54 files changed, 284 insertions(+), 148 deletions(-)

7 years, 7 months

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[Linux-stable-mirror] [git:media_tree/master] media: v4l2-compat-ioctl32.c: make ctrl_is_pointer work for subdevs

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-compat-ioctl32.c: make ctrl_is_pointer work for subdevs Author: Hans Verkuil <hansverk(a)cisco.com> Date: Tue Jan 30 10:18:32 2018 -0500 If the device is of type VFL_TYPE_SUBDEV then vdev->ioctl_ops is NULL so the 'if (!ops->vidioc_query_ext_ctrl)' check would crash. Add a test for !ops to the condition. All sub-devices that have controls will use the control framework, so they do not have an equivalent to ops->vidioc_query_ext_ctrl. Returning false if ops is NULL is the correct thing to do here. Fixes: b8c601e8af ("v4l2-compat-ioctl32.c: fix ctrl_is_pointer") Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Reported-by: Laurent Pinchart <laurent.pinchart(a)ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart(a)ideasonboard.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index bdb5c226d01c..5198c9eeb348 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -770,7 +770,7 @@ static inline bool ctrl_is_pointer(struct file *file, u32 id) return ctrl && ctrl->is_ptr; } - if (!ops->vidioc_query_ext_ctrl) + if (!ops || !ops->vidioc_query_ext_ctrl) return false; return !ops->vidioc_query_ext_ctrl(file, fh, &qec) &&

7 years, 7 months

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[Linux-stable-mirror] [PATCH] ibmvfc: fix misdefined reserved field in ibmvfc_fcp_rsp_info

by Tyrel Datwyler

The fcp_rsp_info structure as defined in the FC spec has an initial 3 bytes reserved field. The ibmvfc driver mistakenly defined this field as 4 bytes resulting in the rsp_code field being defined in what should be the start of the second reserved field and thus always being reported as zero by the driver. Ideally, we should wire ibmvfc up with libfc for the sake of code deduplication, and ease of maintaining standardized structures in a single place. However, for now simply fixup the definition in ibmvfc for backporting to distros on older kernels. Wiring up with libfc will be done in a followup patch. Cc: stable(a)vger.kernel.org Reported-by: Hannes Reinecke <hare(a)suse.de> Signed-off-by: Tyrel Datwyler <tyreld(a)linux.vnet.ibm.com> --- drivers/scsi/ibmvscsi/ibmvfc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h index 9a0696f..b81a53c 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.h +++ b/drivers/scsi/ibmvscsi/ibmvfc.h @@ -367,7 +367,7 @@ enum ibmvfc_fcp_rsp_info_codes { }; struct ibmvfc_fcp_rsp_info { - __be16 reserved; + u8 reserved[3]; u8 rsp_code; u8 reserved2[4]; }__attribute__((packed, aligned (2))); -- 2.7.4

7 years, 7 months

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[Linux-stable-mirror] [PATCH v3 2/5] crypto: caam: Fix endless loop when RNG is already initialized

by Bryan O'Donoghue

commit 1005bccd7a4a ("crypto: caam - enable instantiation of all RNG4 state handles") introduces a control when incrementing ent_delay which contains the following comment above it: /* * If either SH were instantiated by somebody else * (e.g. u-boot) then it is assumed that the entropy * parameters are properly set and thus the function * setting these (kick_trng(...)) is skipped. * Also, if a handle was instantiated, do not change * the TRNG parameters. */ This is a problem observed when sec_init() has been run in u-boot and and TrustZone is enabled. We can fix this by instantiating all rng state handles in u-boot but, on the Kernel side we should ensure that this non-terminating path is dealt with. Fixes: 1005bccd7a4a ("crypto: caam - enable instantiation of all RNG4 state handles") Reported-by: Ryan Harkin <ryan.harkin(a)linaro.org> Cc: "Horia Geantă" <horia.geanta(a)nxp.com> Cc: Aymen Sghaier <aymen.sghaier(a)nxp.com> Cc: Fabio Estevam <fabio.estevam(a)nxp.com> Cc: Peng Fan <peng.fan(a)nxp.com> Cc: "David S. Miller" <davem(a)davemloft.net> Cc: Lukas Auer <lukas.auer(a)aisec.fraunhofer.de> Cc: <stable(a)vger.kernel.org> # 4.12+ Signed-off-by: Bryan O'Donoghue <pure.logic(a)nexus-software.ie> --- drivers/crypto/caam/ctrl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index 98986d3..0a1e96b 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -704,7 +704,10 @@ static int caam_probe(struct platform_device *pdev) ent_delay); kick_trng(pdev, ent_delay); ent_delay += 400; + } else if (ctrlpriv->rng4_sh_init && inst_handles) { + ent_delay += 400; } + /* * if instantiate_rng(...) fails, the loop will rerun * and the kick_trng(...) function will modfiy the -- 2.7.4

7 years, 7 months

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[Linux-stable-mirror] [PATCH v3 1/5] crypto: caam: Fix null dereference at error path

by Bryan O'Donoghue

From: Rui Miguel Silva <rui.silva(a)linaro.org> caam_remove already removes the debugfs entry, so we need to remove the one immediately before calling caam_remove. This fix a NULL dereference at error paths is caam_probe fail. [bod: changed name prefix to "crypto: caam: Fix .."] [bod: added Fixes tag] Fixes: 67c2315def06 ("crypto: caam - add Queue Interface (QI) backend support") Tested-by: Ryan Harkin <ryan.harkin(a)linaro.org> Signed-off-by: Rui Miguel Silva <rui.silva(a)linaro.org> Cc: "Horia Geantă" <horia.geanta(a)nxp.com> Cc: Aymen Sghaier <aymen.sghaier(a)nxp.com> Cc: Fabio Estevam <fabio.estevam(a)nxp.com> Cc: Peng Fan <peng.fan(a)nxp.com> Cc: "David S. Miller" <davem(a)davemloft.net> Cc: Lukas Auer <lukas.auer(a)aisec.fraunhofer.de> Cc: <stable(a)vger.kernel.org> # 4.12+ Reviewed-by: Horia Geantă <horia.geanta(a)nxp.com> Signed-off-by: Bryan O'Donoghue <pure.logic(a)nexus-software.ie> --- drivers/crypto/caam/ctrl.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index 027e121..98986d3 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -809,9 +809,6 @@ static int caam_probe(struct platform_device *pdev) return 0; caam_remove: -#ifdef CONFIG_DEBUG_FS - debugfs_remove_recursive(ctrlpriv->dfs_root); -#endif caam_remove(pdev); return ret; -- 2.7.4

7 years, 7 months

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[Linux-stable-mirror] + mm-memory_hotplug-fix-memmap-initialization.patch added to -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: mm, memory_hotplug: fix memmap initialization has been added to the -mm tree. Its filename is mm-memory_hotplug-fix-memmap-initialization.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-memory_hotplug-fix-memmap-initi… and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-memory_hotplug-fix-memmap-initi… Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Michal Hocko <mhocko(a)suse.com> Subject: mm, memory_hotplug: fix memmap initialization Bharata has noticed that onlining a newly added memory doesn't increase the total memory, pointing to f7f99100d8d9 ("mm: stop zeroing memory during allocation in vmemmap") as a culprit. This commit has changed the way how the memory for memmaps is initialized and moves it from the allocation time to the initialization time. This works properly for the early memmap init path. It doesn't work for the memory hotplug though because we need to mark page as reserved when the sparsemem section is created and later initialize it completely during onlining. memmap_init_zone is called in the early stage of onlining. With the current code it calls __init_single_page and as such it clears up the whole stage and therefore online_pages_range skips those pages. Fix this by skipping mm_zero_struct_page in __init_single_page for memory hotplug path. This is quite uggly but unifying both early init and memory hotplug init paths is a large project. Make sure we plug the regression at least. Link: http://lkml.kernel.org/r/20180130101141.GW21609@dhcp22.suse.cz Fixes: f7f99100d8d9 ("mm: stop zeroing memory during allocation in vmemmap") Signed-off-by: Michal Hocko <mhocko(a)suse.com> Reported-by: Bharata B Rao <bharata(a)linux.vnet.ibm.com> Tested-by: Bharata B Rao <bharata(a)linux.vnet.ibm.com> Reviewed-by: Pavel Tatashin <pasha.tatashin(a)oracle.com> Cc: Steven Sistare <steven.sistare(a)oracle.com> Cc: Daniel Jordan <daniel.m.jordan(a)oracle.com> Cc: Bob Picco <bob.picco(a)oracle.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/page_alloc.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff -puN mm/page_alloc.c~mm-memory_hotplug-fix-memmap-initialization mm/page_alloc.c --- a/mm/page_alloc.c~mm-memory_hotplug-fix-memmap-initialization +++ a/mm/page_alloc.c @@ -1178,9 +1178,10 @@ static void free_one_page(struct zone *z } static void __meminit __init_single_page(struct page *page, unsigned long pfn, - unsigned long zone, int nid) + unsigned long zone, int nid, bool zero) { - mm_zero_struct_page(page); + if (zero) + mm_zero_struct_page(page); set_page_links(page, zone, nid, pfn); init_page_count(page); page_mapcount_reset(page); @@ -1195,9 +1196,9 @@ static void __meminit __init_single_page } static void __meminit __init_single_pfn(unsigned long pfn, unsigned long zone, - int nid) + int nid, bool zero) { - return __init_single_page(pfn_to_page(pfn), pfn, zone, nid); + return __init_single_page(pfn_to_page(pfn), pfn, zone, nid, zero); } #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT @@ -1218,7 +1219,7 @@ static void __meminit init_reserved_page if (pfn >= zone->zone_start_pfn && pfn < zone_end_pfn(zone)) break; } - __init_single_pfn(pfn, zid, nid); + __init_single_pfn(pfn, zid, nid, true); } #else static inline void init_reserved_page(unsigned long pfn) @@ -1535,7 +1536,7 @@ static unsigned long __init deferred_in } else { page++; } - __init_single_page(page, pfn, zid, nid); + __init_single_page(page, pfn, zid, nid, true); nr_pages++; } return (nr_pages); @@ -5400,15 +5401,20 @@ not_early: * can be created for invalid pages (for alignment) * check here not to call set_pageblock_migratetype() against * pfn out of zone. + * + * Please note that MEMMAP_HOTPLUG path doesn't clear memmap + * because this is done early in sparse_add_one_section */ if (!(pfn & (pageblock_nr_pages - 1))) { struct page *page = pfn_to_page(pfn); - __init_single_page(page, pfn, zone, nid); + __init_single_page(page, pfn, zone, nid, + context != MEMMAP_HOTPLUG); set_pageblock_migratetype(page, MIGRATE_MOVABLE); cond_resched(); } else { - __init_single_pfn(pfn, zone, nid); + __init_single_pfn(pfn, zone, nid, + context != MEMMAP_HOTPLUG); } } } _ Patches currently in -mm which might be from mhocko(a)suse.com are mm-drop-hotplug-lock-from-lru_add_drain_all.patch mm-oom-docs-describe-the-cgroup-aware-oom-killer-fix-2.patch mm-hugetlb-drop-hugepages_treat_as_movable-sysctl.patch mm-introduce-map_fixed_safe.patch fs-elf-drop-map_fixed-usage-from-elf_map.patch fs-elf-drop-map_fixed-usage-from-elf_map-fix-fix.patch mm-numa-rework-do_pages_move.patch mm-migrate-remove-reason-argument-from-new_page_t.patch mm-migrate-remove-reason-argument-from-new_page_t-fix-3.patch mm-unclutter-thp-migration.patch mm-hugetlb-unify-core-page-allocation-accounting-and-initialization.patch mm-hugetlb-integrate-giga-hugetlb-more-naturally-to-the-allocation-path.patch mm-hugetlb-do-not-rely-on-overcommit-limit-during-migration.patch mm-hugetlb-get-rid-of-surplus-page-accounting-tricks.patch mm-hugetlb-further-simplify-hugetlb-allocation-api.patch hugetlb-mempolicy-fix-the-mbind-hugetlb-migration.patch hugetlb-mbind-fall-back-to-default-policy-if-vma-is-null.patch mm-memory_hotplug-fix-memmap-initialization.patch

7 years, 7 months

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[Linux-stable-mirror] [PATCH] KVM: x86: Fix CPUID function for word 6 (80000001_ECX)

by Paolo Bonzini

From: Janakarajan Natarajan <Janakarajan.Natarajan(a)amd.com> [ upstream commit 50a671d4d15b859f447fa527191073019b6ce9cb ] The function for CPUID 80000001 ECX is set to 0xc0000001. Set it to 0x80000001. Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan(a)amd.com> Reviewed-by: Jim Mattson <jmattson(a)google.com> Reviewed-by: Krish Sadhukhan <krish.sadhukhan(a)oracle.com> Reviewed-by: Borislav Petkov <bp(a)suse.de> Fixes: d6321d493319 ("KVM: x86: generalize guest_cpuid_has_ helpers") Signed-off-by: Radim Krčmář <rkrcmar(a)redhat.com> --- arch/x86/kvm/cpuid.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h index cdc70a3a6583..c2cea6651279 100644 --- a/arch/x86/kvm/cpuid.h +++ b/arch/x86/kvm/cpuid.h @@ -44,7 +44,7 @@ static const struct cpuid_reg reverse_cpuid[] = { [CPUID_8086_0001_EDX] = {0x80860001, 0, CPUID_EDX}, [CPUID_1_ECX] = { 1, 0, CPUID_ECX}, [CPUID_C000_0001_EDX] = {0xc0000001, 0, CPUID_EDX}, - [CPUID_8000_0001_ECX] = {0xc0000001, 0, CPUID_ECX}, + [CPUID_8000_0001_ECX] = {0x80000001, 0, CPUID_ECX}, [CPUID_7_0_EBX] = { 7, 0, CPUID_EBX}, [CPUID_D_1_EAX] = { 0xd, 1, CPUID_EAX}, [CPUID_F_0_EDX] = { 0xf, 0, CPUID_EDX}, -- 2.14.3

7 years, 7 months

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[Linux-stable-mirror] [PATCH 4.14 00/71] 4.14.16-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.14.16 release. There are 71 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Wed Jan 31 12:37:59 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.14.16-rc1.gz or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.14.16-rc1 Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> cpufreq: governor: Ensure sufficiently large sampling intervals Daniel Borkmann <daniel(a)iogearbox.net> bpf, arm64: fix stack_depth tracking in combination with tail calls Daniel Borkmann <daniel(a)iogearbox.net> bpf: reject stores into ctx via st and xadd Alexei Starovoitov <ast(a)kernel.org> bpf: fix 32-bit divide by zero Eric Dumazet <edumazet(a)google.com> bpf: fix divides by zero Daniel Borkmann <daniel(a)iogearbox.net> bpf: avoid false sharing of map refcount with max_entries Alexei Starovoitov <ast(a)kernel.org> bpf: introduce BPF_JIT_ALWAYS_ON config Thomas Gleixner <tglx(a)linutronix.de> hrtimer: Reset hrtimer cpu base proper on CPU hotplug Andy Lutomirski <luto(a)kernel.org> x86/mm/64: Fix vmapped stack syncing on very-large-memory 4-level systems Borislav Petkov <bp(a)suse.de> x86/microcode: Fix again accessing initrd after having been freed Jia Zhang <zhang.jia(a)linux.alibaba.com> x86/microcode/intel: Extend BDW late-loading further with LLC size check Xiao Liang <xiliang(a)redhat.com> perf/x86/amd/power: Do not load AMD power module on !AMD platforms Neil Horman <nhorman(a)tuxdriver.com> vmxnet3: repair memory leak Lorenzo Colitti <lorenzo(a)google.com> net: ipv4: Make "ip route get" match iif lo rules again. Sabrina Dubroca <sd(a)queasysnail.net> tls: reset crypto_info when do_tls_setsockopt_tx fails Sabrina Dubroca <sd(a)queasysnail.net> tls: return -EBUSY if crypto_info is already set Sabrina Dubroca <sd(a)queasysnail.net> tls: fix sw_ctx leak Ilya Lesokhin <ilyal(a)mellanox.com> net/tls: Only attach to sockets in ESTABLISHED state Xin Long <lucien.xin(a)gmail.com> netlink: reset extack earlier in netlink_rcv_skb Jakub Kicinski <jakub.kicinski(a)netronome.com> nfp: use the correct index for link speed table Talat Batheesh <talatb(a)mellanox.com> net/mlx5e: Fix fixpoint divide exception in mlx5e_am_stats_compare David Ahern <dsahern(a)gmail.com> netlink: extack needs to be reset each time through loop Xin Long <lucien.xin(a)gmail.com> sctp: reinit stream if stream outcnt has been change by sinit in sendmsg Eric Dumazet <edumazet(a)google.com> flow_dissector: properly cap thoff field Cong Wang <xiyou.wangcong(a)gmail.com> tun: fix a memory leak for tfile->tx_array Yuval Mintz <yuvalm(a)mellanox.com> mlxsw: spectrum_router: Don't log an error on missing neighbor Willem de Bruijn <willemb(a)google.com> gso: validate gso_type in GSO handlers Alexey Kodanev <alexey.kodanev(a)oracle.com> ip6_gre: init dev->mtu and dev->hard_header_len correctly Ivan Vecera <cera(a)cera.cz> be2net: restore properly promisc mode after queues reconfiguration Guillaume Nault <g.nault(a)alphalink.fr> ppp: unlock all_ppp_mutex before registering device Saeed Mahameed <saeedm(a)mellanox.com> net/mlx5: Fix get vector affinity helper function Eran Ben Elisha <eranbe(a)mellanox.com> {net,ib}/mlx5: Don't disable local loopback multicast traffic when needed Cong Wang <xiyou.wangcong(a)gmail.com> tipc: fix a memory leak in tipc_nl_node_get_link() Xin Long <lucien.xin(a)gmail.com> sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf Xin Long <lucien.xin(a)gmail.com> sctp: do not allow the v4 socket to bind a v4mapped v6 address Francois Romieu <romieu(a)fr.zoreil.com> r8169: fix memory corruption on retrieval of hardware statistics. Guillaume Nault <g.nault(a)alphalink.fr> pppoe: take ->needed_headroom of lower device into account on xmit David Ahern <dsahern(a)gmail.com> net: vrf: Add support for sends to local broadcast address r.hering(a)avm.de <r.hering(a)avm.de> net/tls: Fix inverted error codes to avoid endless loop Dan Streetman <ddstreet(a)ieee.org> net: tcp: close sock if net namespace is exiting Eric Dumazet <edumazet(a)google.com> net: qdisc_pkt_len_init() should be more robust Felix Fietkau <nbd(a)nbd.name> net: igmp: fix source address check for IGMPv3 reports Yuiko Oshino <yuiko.oshino(a)microchip.com> lan78xx: Fix failure in USB Full Speed Eric Dumazet <edumazet(a)google.com> ipv6: ip6_make_skb() needs to clear cork.base.dst Mike Maloney <maloney(a)google.com> ipv6: fix udpv6 sendmsg crash caused by too small MTU Ben Hutchings <ben.hutchings(a)codethink.co.uk> ipv6: Fix getsockopt() for sockets with default IPV6_AUTOFLOWLABEL Alexey Kodanev <alexey.kodanev(a)oracle.com> dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed state Jim Westfall <jwestfall(a)surrealistic.net> ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY Jim Westfall <jwestfall(a)surrealistic.net> net: Allow neigh contructor functions ability to modify the primary_key Boris Brezillon <boris.brezillon(a)free-electrons.com> drm/vc4: Fix NULL pointer dereference in vc4_save_hang_state() Russell King <rmk+kernel(a)armlinux.org.uk> ARM: net: bpf: clarify tail_call index Russell King <rmk+kernel(a)armlinux.org.uk> ARM: net: bpf: fix LDX instructions Russell King <rmk+kernel(a)armlinux.org.uk> ARM: net: bpf: fix register saving Russell King <rmk+kernel(a)armlinux.org.uk> ARM: net: bpf: correct stack layout documentation Russell King <rmk+kernel(a)armlinux.org.uk> ARM: net: bpf: move stack documentation Russell King <rmk+kernel(a)armlinux.org.uk> ARM: net: bpf: fix stack alignment Russell King <rmk+kernel(a)armlinux.org.uk> ARM: net: bpf: fix tail call jumps Russell King <rmk+kernel(a)armlinux.org.uk> ARM: net: bpf: avoid 'bx' instruction on non-Thumb capable CPUs Martin Brandenburg <martin(a)omnibond.com> orangefs: fix deadlock; do not write i_size in read_iter Christian Borntraeger <borntraeger(a)de.ibm.com> KVM: s390: add proper locking for CMMA migration bitmap Josef Bacik <jbacik(a)fb.com> Btrfs: fix stale entries in readdir Dmitry Torokhov <dmitry.torokhov(a)gmail.com> Input: trackpoint - only expose supported controls for Elan, ALPS and NXP Aaron Ma <aaron.ma(a)canonical.com> Input: trackpoint - force 3 buttons if 0 button is reported Mark Furneaux <mark(a)furneaux.ca> Input: xpad - add support for PDP Xbox One controllers Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Revert "module: Add retpoline tag to VERMAGIC" Steffen Klassert <steffen.klassert(a)secunet.com> xfrm: Fix a race in the xdst pcpu cache. Kevin Cernekee <cernekee(a)chromium.org> netfilter: xt_osf: Add missing permission checks Kevin Cernekee <cernekee(a)chromium.org> netfilter: nfnetlink_cthelper: Add missing permission checks Vlastimil Babka <vbabka(a)suse.cz> mm, page_alloc: fix potential false positive in __zone_watermark_ok Martin Brandenburg <martin(a)omnibond.com> orangefs: initialize op on loop restart in orangefs_devreq_read Martin Brandenburg <martin(a)omnibond.com> orangefs: use list_for_each_entry_safe in purge_waiting_ops ------------- Diffstat: Makefile | 4 +- arch/arm/net/bpf_jit_32.c | 225 ++++++++++--------- arch/arm64/net/bpf_jit_comp.c | 20 +- arch/s390/kvm/kvm-s390.c | 18 +- arch/x86/events/amd/power.c | 2 +- arch/x86/kernel/cpu/microcode/core.c | 2 +- arch/x86/kernel/cpu/microcode/intel.c | 20 +- arch/x86/mm/tlb.c | 34 ++- drivers/cpufreq/cpufreq_governor.c | 19 +- drivers/gpu/drm/vc4/vc4_gem.c | 12 +- drivers/infiniband/hw/mlx5/main.c | 9 +- drivers/input/joystick/xpad.c | 19 ++ drivers/input/mouse/trackpoint.c | 245 +++++++++++++-------- drivers/input/mouse/trackpoint.h | 34 +-- drivers/net/ethernet/emulex/benet/be_main.c | 9 + drivers/net/ethernet/mellanox/mlx5/core/en_rx_am.c | 6 + .../net/ethernet/mellanox/mlx5/core/en_selftest.c | 27 ++- drivers/net/ethernet/mellanox/mlx5/core/main.c | 3 +- drivers/net/ethernet/mellanox/mlx5/core/vport.c | 22 +- .../net/ethernet/mellanox/mlxsw/spectrum_router.c | 10 +- .../net/ethernet/netronome/nfp/nfp_net_ethtool.c | 2 +- drivers/net/ethernet/realtek/r8169.c | 9 +- drivers/net/ppp/ppp_generic.c | 5 +- drivers/net/ppp/pppoe.c | 11 +- drivers/net/tun.c | 15 +- drivers/net/usb/lan78xx.c | 1 + drivers/net/vmxnet3/vmxnet3_drv.c | 2 +- drivers/net/vrf.c | 5 +- fs/btrfs/delayed-inode.c | 26 +-- fs/orangefs/devorangefs-req.c | 3 +- fs/orangefs/file.c | 7 +- fs/orangefs/orangefs-kernel.h | 11 - fs/orangefs/waitqueue.c | 4 +- include/linux/bpf.h | 21 +- include/linux/mlx5/driver.h | 19 +- include/linux/mlx5/mlx5_ifc.h | 5 +- include/linux/vermagic.h | 8 +- include/net/arp.h | 3 + include/net/ipv6.h | 1 + include/net/net_namespace.h | 10 + include/net/tls.h | 2 +- init/Kconfig | 7 + kernel/bpf/core.c | 23 +- kernel/bpf/verifier.c | 37 ++++ kernel/time/hrtimer.c | 3 + lib/test_bpf.c | 11 +- mm/page_alloc.c | 6 +- net/core/dev.c | 19 +- net/core/filter.c | 10 +- net/core/flow_dissector.c | 3 +- net/core/neighbour.c | 4 +- net/core/sysctl_net_core.c | 6 + net/dccp/ccids/ccid2.c | 3 + net/ipv4/arp.c | 7 +- net/ipv4/esp4_offload.c | 3 + net/ipv4/igmp.c | 2 +- net/ipv4/route.c | 1 + net/ipv4/tcp.c | 3 + net/ipv4/tcp_offload.c | 3 + net/ipv4/tcp_timer.c | 15 ++ net/ipv4/udp_offload.c | 3 + net/ipv6/esp6_offload.c | 3 + net/ipv6/ip6_gre.c | 14 +- net/ipv6/ip6_output.c | 9 +- net/ipv6/ipv6_sockglue.c | 2 +- net/ipv6/tcpv6_offload.c | 3 + net/ipv6/udp_offload.c | 3 + net/netfilter/nfnetlink_cthelper.c | 10 + net/netfilter/xt_osf.c | 7 + net/netlink/af_netlink.c | 3 +- net/sctp/offload.c | 3 + net/sctp/socket.c | 40 ++-- net/socket.c | 9 + net/tipc/node.c | 26 ++- net/tls/tls_main.c | 17 +- net/tls/tls_sw.c | 16 +- net/xfrm/xfrm_policy.c | 8 +- tools/testing/selftests/bpf/test_verifier.c | 29 ++- 78 files changed, 843 insertions(+), 438 deletions(-)

7 years, 7 months

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[Linux-stable-mirror] [PATCHv2 12/13] v4l2-compat-ioctl32.c: don't copy back the result for certain errors

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> Some ioctls need to copy back the result even if the ioctl returned an error. However, don't do this for the error code -ENOTTY. It makes no sense in that cases. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 7ee3777cbe9c..3a1fca1440ac 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -968,6 +968,9 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar set_fs(old_fs); } + if (err == -ENOTTY) + return err; + /* Special case: even after an error we need to put the results back for these ioctls since the error_idx will contain information on which control failed. */ -- 2.15.1

7 years, 7 months

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[Linux-stable-mirror] [PATCHv2 09/13] v4l2-compat-ioctl32.c: fix ctrl_is_pointer

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> ctrl_is_pointer just hardcoded two known string controls, but that caused problems when using e.g. custom controls that use a pointer for the payload. Reimplement this function: it now finds the v4l2_ctrl (if the driver uses the control framework) or it calls vidioc_query_ext_ctrl (if the driver implements that directly). In both cases it can now check if the control is a pointer control or not. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 57 ++++++++++++++++++--------- 1 file changed, 38 insertions(+), 19 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 7dff9b4aeb19..30c5be1f0549 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -18,6 +18,8 @@ #include <linux/videodev2.h> #include <linux/v4l2-subdev.h> #include <media/v4l2-dev.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-ctrls.h> #include <media/v4l2-ioctl.h> static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg) @@ -601,24 +603,39 @@ struct v4l2_ext_control32 { }; } __attribute__ ((packed)); -/* The following function really belong in v4l2-common, but that causes - a circular dependency between modules. We need to think about this, but - for now this will do. */ - -/* Return non-zero if this control is a pointer type. Currently only - type STRING is a pointer type. */ -static inline int ctrl_is_pointer(u32 id) +/* Return true if this control is a pointer type. */ +static inline bool ctrl_is_pointer(struct file *file, u32 id) { - switch (id) { - case V4L2_CID_RDS_TX_PS_NAME: - case V4L2_CID_RDS_TX_RADIO_TEXT: - return 1; - default: - return 0; + struct video_device *vdev = video_devdata(file); + struct v4l2_fh *fh = NULL; + struct v4l2_ctrl_handler *hdl = NULL; + struct v4l2_query_ext_ctrl qec = { id }; + const struct v4l2_ioctl_ops *ops = vdev->ioctl_ops; + + if (test_bit(V4L2_FL_USES_V4L2_FH, &vdev->flags)) + fh = file->private_data; + + if (fh && fh->ctrl_handler) + hdl = fh->ctrl_handler; + else if (vdev->ctrl_handler) + hdl = vdev->ctrl_handler; + + if (hdl) { + struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, id); + + return ctrl && ctrl->is_ptr; } + + if (!ops->vidioc_query_ext_ctrl) + return false; + + return !ops->vidioc_query_ext_ctrl(file, fh, &qec) && + (qec.flags & V4L2_CTRL_FLAG_HAS_PAYLOAD); } -static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up) +static int get_v4l2_ext_controls32(struct file *file, + struct v4l2_ext_controls *kp, + struct v4l2_ext_controls32 __user *up) { struct v4l2_ext_control32 __user *ucontrols; struct v4l2_ext_control __user *kcontrols; @@ -651,7 +668,7 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext return -EFAULT; if (get_user(id, &kcontrols->id)) return -EFAULT; - if (ctrl_is_pointer(id)) { + if (ctrl_is_pointer(file, id)) { void __user *s; if (get_user(p, &ucontrols->string)) @@ -666,7 +683,9 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext return 0; } -static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up) +static int put_v4l2_ext_controls32(struct file *file, + struct v4l2_ext_controls *kp, + struct v4l2_ext_controls32 __user *up) { struct v4l2_ext_control32 __user *ucontrols; struct v4l2_ext_control __user *kcontrols = @@ -698,7 +717,7 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext /* Do not modify the pointer when copying a pointer control. The contents of the pointer was changed, not the pointer itself. */ - if (ctrl_is_pointer(id)) + if (ctrl_is_pointer(file, id)) size -= sizeof(ucontrols->value64); if (copy_in_user(ucontrols, kcontrols, size)) return -EFAULT; @@ -912,7 +931,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar case VIDIOC_G_EXT_CTRLS: case VIDIOC_S_EXT_CTRLS: case VIDIOC_TRY_EXT_CTRLS: - err = get_v4l2_ext_controls32(&karg.v2ecs, up); + err = get_v4l2_ext_controls32(file, &karg.v2ecs, up); compatible_arg = 0; break; case VIDIOC_DQEVENT: @@ -939,7 +958,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar case VIDIOC_G_EXT_CTRLS: case VIDIOC_S_EXT_CTRLS: case VIDIOC_TRY_EXT_CTRLS: - if (put_v4l2_ext_controls32(&karg.v2ecs, up)) + if (put_v4l2_ext_controls32(file, &karg.v2ecs, up)) err = -EFAULT; break; case VIDIOC_S_EDID: -- 2.15.1

7 years, 7 months

3
2
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[Linux-stable-mirror] [PATCHv2 10/13] v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> put_v4l2_window32() didn't copy back the clip list to userspace. Drivers can update the clip rectangles, so this should be done. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 59 ++++++++++++++++++--------- 1 file changed, 40 insertions(+), 19 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 30c5be1f0549..0df941ca4d90 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -50,6 +50,11 @@ struct v4l2_window32 { static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) { + struct v4l2_clip32 __user *uclips; + struct v4l2_clip __user *kclips; + compat_caddr_t p; + u32 n; + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || copy_from_user(&kp->w, &up->w, sizeof(up->w)) || get_user(kp->field, &up->field) || @@ -59,38 +64,54 @@ static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user return -EFAULT; if (kp->clipcount > 2048) return -EINVAL; - if (kp->clipcount) { - struct v4l2_clip32 __user *uclips; - struct v4l2_clip __user *kclips; - int n = kp->clipcount; - compat_caddr_t p; + if (!kp->clipcount) { + kp->clips = NULL; + return 0; + } - if (get_user(p, &up->clips)) + n = kp->clipcount; + if (get_user(p, &up->clips)) + return -EFAULT; + uclips = compat_ptr(p); + kclips = compat_alloc_user_space(n * sizeof(*kclips)); + kp->clips = kclips; + while (n--) { + if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c))) return -EFAULT; - uclips = compat_ptr(p); - kclips = compat_alloc_user_space(n * sizeof(*kclips)); - kp->clips = kclips; - while (--n >= 0) { - if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c))) - return -EFAULT; - if (put_user(n ? kclips + 1 : NULL, &kclips->next)) - return -EFAULT; - uclips += 1; - kclips += 1; - } - } else - kp->clips = NULL; + if (put_user(n ? kclips + 1 : NULL, &kclips->next)) + return -EFAULT; + uclips++; + kclips++; + } return 0; } static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) { + struct v4l2_clip __user *kclips = kp->clips; + struct v4l2_clip32 __user *uclips; + u32 n = kp->clipcount; + compat_caddr_t p; + if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) || put_user(kp->field, &up->field) || put_user(kp->chromakey, &up->chromakey) || put_user(kp->clipcount, &up->clipcount) || put_user(kp->global_alpha, &up->global_alpha)) return -EFAULT; + + if (!kp->clipcount) + return 0; + + if (get_user(p, &up->clips)) + return -EFAULT; + uclips = compat_ptr(p); + while (n--) { + if (copy_in_user(&uclips->c, &kclips->c, sizeof(uclips->c))) + return -EFAULT; + uclips++; + kclips++; + } return 0; } -- 2.15.1

7 years, 7 months

3
2
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[Linux-stable-mirror] [PATCH 1/3] drm/i915/bxt, glk: Increase PCODE timeouts during CDCLK freq changing

by Imre Deak

Currently we see sporadic timeouts during CDCLK changing both on BXT and GLK as reported by the Bugzilla: ticket. It's easy to reproduce this by changing the frequency in a tight loop after blanking the display. The upper bound for the completion time is 800us based on my tests, so increase it from the current 500us to 2ms; with that I couldn't trigger the problem either on BXT or GLK. Note that timeouts happened during both the change notification and the voltage level setting PCODE request. (For the latter one BSpec doesn't require us to wait for completion before further HW programming.) This issue is similar to 2c7d0602c815 ("drm/i915/gen9: Fix PCODE polling during CDCLK change notification") but there the PCODE request does complete (as shown by the mbox busy flag), only the reply we get from PCODE indicates a failure. So there we keep resending the request until a success reply, here we just have to increase the timeout for the one PCODE request we send. Cc: Chris Wilson <chris(a)chris-wilson.co.uk> Cc: Ville Syrjälä <ville.syrjala(a)linux.intel.com> Cc: stable(a)vger.kernel.org # v4.4+ Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103326 Signed-off-by: Imre Deak <imre.deak(a)intel.com> --- drivers/gpu/drm/i915/i915_drv.h | 6 +++++- drivers/gpu/drm/i915/intel_cdclk.c | 20 +++++++++++++++----- drivers/gpu/drm/i915/intel_pm.c | 6 +++--- 3 files changed, 23 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 454d8f937fae..5e293be4e51d 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3723,7 +3723,11 @@ extern void intel_display_print_error_state(struct drm_i915_error_state_buf *e, struct intel_display_error_state *error); int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val); -int sandybridge_pcode_write(struct drm_i915_private *dev_priv, u32 mbox, u32 val); +int snb_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 val, + int timeout_us); +#define sandybridge_pcode_write(dev_priv, mbox, val) \ + snb_pcode_request(dev_priv, mbox, val, 500) + int skl_pcode_request(struct drm_i915_private *dev_priv, u32 mbox, u32 request, u32 reply_mask, u32 reply, int timeout_base_ms); diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c index c4392ea34a3d..5057336c40ba 100644 --- a/drivers/gpu/drm/i915/intel_cdclk.c +++ b/drivers/gpu/drm/i915/intel_cdclk.c @@ -1370,10 +1370,14 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv, break; } - /* Inform power controller of upcoming frequency change */ + /* + * Inform power controller of upcoming frequency change. BSpec + * requires us to wait up to 150usec, but that leads to timeouts; + * the 2ms used here is based on experiment. + */ mutex_lock(&dev_priv->pcu_lock); - ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, - 0x80000000); + ret = snb_pcode_request(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, + 0x80000000, 2000); mutex_unlock(&dev_priv->pcu_lock); if (ret) { @@ -1404,8 +1408,14 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv, I915_WRITE(CDCLK_CTL, val); mutex_lock(&dev_priv->pcu_lock); - ret = sandybridge_pcode_write(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, - cdclk_state->voltage_level); + /* + * The timeout isn't specified, the 2ms used here is based on + * experiment. + * FIXME: Waiting for the request completion could be delayed until + * the next PCODE request based on BSpec. + */ + ret = snb_pcode_request(dev_priv, HSW_PCODE_DE_WRITE_FREQ_REQ, + cdclk_state->voltage_level, 2000); mutex_unlock(&dev_priv->pcu_lock); if (ret) { diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 0b92ea1dbd40..f6f4dbacb9af 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -9169,8 +9169,8 @@ int sandybridge_pcode_read(struct drm_i915_private *dev_priv, u32 mbox, u32 *val return 0; } -int sandybridge_pcode_write(struct drm_i915_private *dev_priv, - u32 mbox, u32 val) +int snb_pcode_request(struct drm_i915_private *dev_priv, + u32 mbox, u32 val, int timeout_us) { int status; @@ -9193,7 +9193,7 @@ int sandybridge_pcode_write(struct drm_i915_private *dev_priv, if (__intel_wait_for_register_fw(dev_priv, GEN6_PCODE_MAILBOX, GEN6_PCODE_READY, 0, - 500, 0, NULL)) { + timeout_us, 0, NULL)) { DRM_ERROR("timeout waiting for pcode write of 0x%08x to mbox %x to finish for %ps\n", val, mbox, __builtin_return_address(0)); return -ETIMEDOUT; -- 2.13.2

7 years, 7 months

3
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[Linux-stable-mirror] [git:media_tree/master] media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Fri Jan 26 03:24:53 2018 -0500 Some ioctls need to copy back the result even if the ioctl returned an error. However, don't do this for the error code -ENOTTY. It makes no sense in that cases. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 3 +++ 1 file changed, 3 insertions(+) --- diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 7ee3777cbe9c..3a1fca1440ac 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -968,6 +968,9 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar set_fs(old_fs); } + if (err == -ENOTTY) + return err; + /* Special case: even after an error we need to put the results back for these ioctls since the error_idx will contain information on which control failed. */

7 years, 7 months

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[Linux-stable-mirror] [git:media_tree/master] media: v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Wed Jan 24 09:33:57 2018 -0500 There is nothing wrong with using an unknown buffer type. So stop spamming the kernel log whenever this happens. The kernel will just return -EINVAL to signal this. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 4 ---- 1 file changed, 4 deletions(-) --- diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 0df941ca4d90..7ee3777cbe9c 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -179,8 +179,6 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us return copy_from_user(&kp->fmt.meta, &up->fmt.meta, sizeof(kp->fmt.meta)) ? -EFAULT : 0; default: - pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", - kp->type); return -EINVAL; } } @@ -233,8 +231,6 @@ static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us return copy_to_user(&up->fmt.meta, &kp->fmt.meta, sizeof(kp->fmt.meta)) ? -EFAULT : 0; default: - pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", - kp->type); return -EINVAL; } }

7 years, 7 months

1
0
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[Linux-stable-mirror] [git:media_tree/master] media: v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32 Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Wed Jan 24 06:03:08 2018 -0500 put_v4l2_window32() didn't copy back the clip list to userspace. Drivers can update the clip rectangles, so this should be done. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 59 ++++++++++++++++++--------- 1 file changed, 40 insertions(+), 19 deletions(-) --- diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 30c5be1f0549..0df941ca4d90 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -50,6 +50,11 @@ struct v4l2_window32 { static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) { + struct v4l2_clip32 __user *uclips; + struct v4l2_clip __user *kclips; + compat_caddr_t p; + u32 n; + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || copy_from_user(&kp->w, &up->w, sizeof(up->w)) || get_user(kp->field, &up->field) || @@ -59,38 +64,54 @@ static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user return -EFAULT; if (kp->clipcount > 2048) return -EINVAL; - if (kp->clipcount) { - struct v4l2_clip32 __user *uclips; - struct v4l2_clip __user *kclips; - int n = kp->clipcount; - compat_caddr_t p; + if (!kp->clipcount) { + kp->clips = NULL; + return 0; + } - if (get_user(p, &up->clips)) + n = kp->clipcount; + if (get_user(p, &up->clips)) + return -EFAULT; + uclips = compat_ptr(p); + kclips = compat_alloc_user_space(n * sizeof(*kclips)); + kp->clips = kclips; + while (n--) { + if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c))) return -EFAULT; - uclips = compat_ptr(p); - kclips = compat_alloc_user_space(n * sizeof(*kclips)); - kp->clips = kclips; - while (--n >= 0) { - if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c))) - return -EFAULT; - if (put_user(n ? kclips + 1 : NULL, &kclips->next)) - return -EFAULT; - uclips += 1; - kclips += 1; - } - } else - kp->clips = NULL; + if (put_user(n ? kclips + 1 : NULL, &kclips->next)) + return -EFAULT; + uclips++; + kclips++; + } return 0; } static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) { + struct v4l2_clip __user *kclips = kp->clips; + struct v4l2_clip32 __user *uclips; + u32 n = kp->clipcount; + compat_caddr_t p; + if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) || put_user(kp->field, &up->field) || put_user(kp->chromakey, &up->chromakey) || put_user(kp->clipcount, &up->clipcount) || put_user(kp->global_alpha, &up->global_alpha)) return -EFAULT; + + if (!kp->clipcount) + return 0; + + if (get_user(p, &up->clips)) + return -EFAULT; + uclips = compat_ptr(p); + while (n--) { + if (copy_in_user(&uclips->c, &kclips->c, sizeof(uclips->c))) + return -EFAULT; + uclips++; + kclips++; + } return 0; }

7 years, 7 months

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[Linux-stable-mirror] [git:media_tree/master] media: v4l2-compat-ioctl32.c: fix ctrl_is_pointer

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-compat-ioctl32.c: fix ctrl_is_pointer Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Wed Jan 24 05:30:59 2018 -0500 ctrl_is_pointer just hardcoded two known string controls, but that caused problems when using e.g. custom controls that use a pointer for the payload. Reimplement this function: it now finds the v4l2_ctrl (if the driver uses the control framework) or it calls vidioc_query_ext_ctrl (if the driver implements that directly). In both cases it can now check if the control is a pointer control or not. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 57 ++++++++++++++++++--------- 1 file changed, 38 insertions(+), 19 deletions(-) --- diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 7dff9b4aeb19..30c5be1f0549 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -18,6 +18,8 @@ #include <linux/videodev2.h> #include <linux/v4l2-subdev.h> #include <media/v4l2-dev.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-ctrls.h> #include <media/v4l2-ioctl.h> static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg) @@ -601,24 +603,39 @@ struct v4l2_ext_control32 { }; } __attribute__ ((packed)); -/* The following function really belong in v4l2-common, but that causes - a circular dependency between modules. We need to think about this, but - for now this will do. */ - -/* Return non-zero if this control is a pointer type. Currently only - type STRING is a pointer type. */ -static inline int ctrl_is_pointer(u32 id) +/* Return true if this control is a pointer type. */ +static inline bool ctrl_is_pointer(struct file *file, u32 id) { - switch (id) { - case V4L2_CID_RDS_TX_PS_NAME: - case V4L2_CID_RDS_TX_RADIO_TEXT: - return 1; - default: - return 0; + struct video_device *vdev = video_devdata(file); + struct v4l2_fh *fh = NULL; + struct v4l2_ctrl_handler *hdl = NULL; + struct v4l2_query_ext_ctrl qec = { id }; + const struct v4l2_ioctl_ops *ops = vdev->ioctl_ops; + + if (test_bit(V4L2_FL_USES_V4L2_FH, &vdev->flags)) + fh = file->private_data; + + if (fh && fh->ctrl_handler) + hdl = fh->ctrl_handler; + else if (vdev->ctrl_handler) + hdl = vdev->ctrl_handler; + + if (hdl) { + struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, id); + + return ctrl && ctrl->is_ptr; } + + if (!ops->vidioc_query_ext_ctrl) + return false; + + return !ops->vidioc_query_ext_ctrl(file, fh, &qec) && + (qec.flags & V4L2_CTRL_FLAG_HAS_PAYLOAD); } -static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up) +static int get_v4l2_ext_controls32(struct file *file, + struct v4l2_ext_controls *kp, + struct v4l2_ext_controls32 __user *up) { struct v4l2_ext_control32 __user *ucontrols; struct v4l2_ext_control __user *kcontrols; @@ -651,7 +668,7 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext return -EFAULT; if (get_user(id, &kcontrols->id)) return -EFAULT; - if (ctrl_is_pointer(id)) { + if (ctrl_is_pointer(file, id)) { void __user *s; if (get_user(p, &ucontrols->string)) @@ -666,7 +683,9 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext return 0; } -static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up) +static int put_v4l2_ext_controls32(struct file *file, + struct v4l2_ext_controls *kp, + struct v4l2_ext_controls32 __user *up) { struct v4l2_ext_control32 __user *ucontrols; struct v4l2_ext_control __user *kcontrols = @@ -698,7 +717,7 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext /* Do not modify the pointer when copying a pointer control. The contents of the pointer was changed, not the pointer itself. */ - if (ctrl_is_pointer(id)) + if (ctrl_is_pointer(file, id)) size -= sizeof(ucontrols->value64); if (copy_in_user(ucontrols, kcontrols, size)) return -EFAULT; @@ -912,7 +931,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar case VIDIOC_G_EXT_CTRLS: case VIDIOC_S_EXT_CTRLS: case VIDIOC_TRY_EXT_CTRLS: - err = get_v4l2_ext_controls32(&karg.v2ecs, up); + err = get_v4l2_ext_controls32(file, &karg.v2ecs, up); compatible_arg = 0; break; case VIDIOC_DQEVENT: @@ -939,7 +958,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar case VIDIOC_G_EXT_CTRLS: case VIDIOC_S_EXT_CTRLS: case VIDIOC_TRY_EXT_CTRLS: - if (put_v4l2_ext_controls32(&karg.v2ecs, up)) + if (put_v4l2_ext_controls32(file, &karg.v2ecs, up)) err = -EFAULT; break; case VIDIOC_S_EDID:

7 years, 7 months

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[Linux-stable-mirror] [git:media_tree/master] media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32 Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Wed Jan 24 05:19:59 2018 -0500 The struct v4l2_plane32 should set m.userptr as well. The same happens in v4l2_buffer32 and v4l2-compliance tests for this. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 47 ++++++++++++++++----------- 1 file changed, 28 insertions(+), 19 deletions(-) --- diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 6c70705a48bc..7dff9b4aeb19 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -310,19 +310,24 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ sizeof(up->data_offset))) return -EFAULT; - if (memory == V4L2_MEMORY_USERPTR) { + switch (memory) { + case V4L2_MEMORY_MMAP: + case V4L2_MEMORY_OVERLAY: + if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset, + sizeof(up32->m.mem_offset))) + return -EFAULT; + break; + case V4L2_MEMORY_USERPTR: if (get_user(p, &up32->m.userptr)) return -EFAULT; up_pln = compat_ptr(p); if (put_user((unsigned long)up_pln, &up->m.userptr)) return -EFAULT; - } else if (memory == V4L2_MEMORY_DMABUF) { + break; + case V4L2_MEMORY_DMABUF: if (copy_in_user(&up->m.fd, &up32->m.fd, sizeof(up32->m.fd))) return -EFAULT; - } else { - if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset, - sizeof(up32->m.mem_offset))) - return -EFAULT; + break; } return 0; @@ -331,22 +336,32 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32, enum v4l2_memory memory) { + unsigned long p; + if (copy_in_user(up32, up, 2 * sizeof(__u32)) || copy_in_user(&up32->data_offset, &up->data_offset, sizeof(up->data_offset))) return -EFAULT; - /* For MMAP, driver might've set up the offset, so copy it back. - * USERPTR stays the same (was userspace-provided), so no copying. */ - if (memory == V4L2_MEMORY_MMAP) + switch (memory) { + case V4L2_MEMORY_MMAP: + case V4L2_MEMORY_OVERLAY: if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset, sizeof(up->m.mem_offset))) return -EFAULT; - /* For DMABUF, driver might've set up the fd, so copy it back. */ - if (memory == V4L2_MEMORY_DMABUF) + break; + case V4L2_MEMORY_USERPTR: + if (get_user(p, &up->m.userptr) || + put_user((compat_ulong_t)ptr_to_compat((__force void *)p), + &up32->m.userptr)) + return -EFAULT; + break; + case V4L2_MEMORY_DMABUF: if (copy_in_user(&up32->m.fd, &up->m.fd, sizeof(up->m.fd))) return -EFAULT; + break; + } return 0; } @@ -408,6 +423,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user } else { switch (kp->memory) { case V4L2_MEMORY_MMAP: + case V4L2_MEMORY_OVERLAY: if (get_user(kp->m.offset, &up->m.offset)) return -EFAULT; break; @@ -421,10 +437,6 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user kp->m.userptr = (unsigned long)compat_ptr(tmp); } break; - case V4L2_MEMORY_OVERLAY: - if (get_user(kp->m.offset, &up->m.offset)) - return -EFAULT; - break; case V4L2_MEMORY_DMABUF: if (get_user(kp->m.fd, &up->m.fd)) return -EFAULT; @@ -481,6 +493,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user } else { switch (kp->memory) { case V4L2_MEMORY_MMAP: + case V4L2_MEMORY_OVERLAY: if (put_user(kp->m.offset, &up->m.offset)) return -EFAULT; break; @@ -488,10 +501,6 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user if (put_user(kp->m.userptr, &up->m.userptr)) return -EFAULT; break; - case V4L2_MEMORY_OVERLAY: - if (put_user(kp->m.offset, &up->m.offset)) - return -EFAULT; - break; case V4L2_MEMORY_DMABUF: if (put_user(kp->m.fd, &up->m.fd)) return -EFAULT;

7 years, 7 months

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[Linux-stable-mirror] [git:media_tree/master] media: v4l2-compat-ioctl32.c: avoid sizeof(type)

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-compat-ioctl32.c: avoid sizeof(type) Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Wed Jan 24 05:01:31 2018 -0500 Instead of doing sizeof(struct foo) use sizeof(*up). There even were cases where 4 * sizeof(__u32) was used instead of sizeof(kp->reserved), which is very dangerous when the size of the reserved array changes. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 79 ++++++++++++--------------- 1 file changed, 36 insertions(+), 43 deletions(-) --- diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index c7e9d29d0e33..6c70705a48bc 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -48,7 +48,7 @@ struct v4l2_window32 { static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) { - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || copy_from_user(&kp->w, &up->w, sizeof(up->w)) || get_user(kp->field, &up->field) || get_user(kp->chromakey, &up->chromakey) || @@ -66,7 +66,7 @@ static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user if (get_user(p, &up->clips)) return -EFAULT; uclips = compat_ptr(p); - kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip)); + kclips = compat_alloc_user_space(n * sizeof(*kclips)); kp->clips = kclips; while (--n >= 0) { if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c))) @@ -164,14 +164,14 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) { - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32))) + if (!access_ok(VERIFY_READ, up, sizeof(*up))) return -EFAULT; return __get_v4l2_format32(kp, up); } static int get_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up) { - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_create_buffers32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || copy_from_user(kp, up, offsetof(struct v4l2_create_buffers32, format))) return -EFAULT; return __get_v4l2_format32(&kp->format, &up->format); @@ -218,14 +218,14 @@ static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) { - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32))) + if (!access_ok(VERIFY_WRITE, up, sizeof(*up))) return -EFAULT; return __put_v4l2_format32(kp, up); } static int put_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up) { - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_create_buffers32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, format)) || copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved))) return -EFAULT; @@ -244,7 +244,7 @@ struct v4l2_standard32 { static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up) { /* other fields are not set by the user, nor used by the driver */ - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(kp->index, &up->index)) return -EFAULT; return 0; @@ -252,14 +252,14 @@ static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up) { - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(kp->index, &up->index) || put_user(kp->id, &up->id) || - copy_to_user(up->name, kp->name, 24) || + copy_to_user(up->name, kp->name, sizeof(up->name)) || copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) || put_user(kp->framelines, &up->framelines) || - copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32))) + copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved))) return -EFAULT; return 0; } @@ -307,7 +307,7 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ if (copy_in_user(up, up32, 2 * sizeof(__u32)) || copy_in_user(&up->data_offset, &up32->data_offset, - sizeof(__u32))) + sizeof(up->data_offset))) return -EFAULT; if (memory == V4L2_MEMORY_USERPTR) { @@ -317,11 +317,11 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ if (put_user((unsigned long)up_pln, &up->m.userptr)) return -EFAULT; } else if (memory == V4L2_MEMORY_DMABUF) { - if (copy_in_user(&up->m.fd, &up32->m.fd, sizeof(int))) + if (copy_in_user(&up->m.fd, &up32->m.fd, sizeof(up32->m.fd))) return -EFAULT; } else { if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset, - sizeof(__u32))) + sizeof(up32->m.mem_offset))) return -EFAULT; } @@ -333,19 +333,19 @@ static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ { if (copy_in_user(up32, up, 2 * sizeof(__u32)) || copy_in_user(&up32->data_offset, &up->data_offset, - sizeof(__u32))) + sizeof(up->data_offset))) return -EFAULT; /* For MMAP, driver might've set up the offset, so copy it back. * USERPTR stays the same (was userspace-provided), so no copying. */ if (memory == V4L2_MEMORY_MMAP) if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset, - sizeof(__u32))) + sizeof(up->m.mem_offset))) return -EFAULT; /* For DMABUF, driver might've set up the fd, so copy it back. */ if (memory == V4L2_MEMORY_DMABUF) if (copy_in_user(&up32->m.fd, &up->m.fd, - sizeof(int))) + sizeof(up->m.fd))) return -EFAULT; return 0; @@ -358,7 +358,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user compat_caddr_t p; int ret; - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(kp->index, &up->index) || get_user(kp->type, &up->type) || get_user(kp->flags, &up->flags) || @@ -370,8 +370,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user if (get_user(kp->bytesused, &up->bytesused) || get_user(kp->field, &up->field) || get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - get_user(kp->timestamp.tv_usec, - &up->timestamp.tv_usec)) + get_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec)) return -EFAULT; if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) { @@ -391,13 +390,12 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user uplane32 = compat_ptr(p); if (!access_ok(VERIFY_READ, uplane32, - kp->length * sizeof(struct v4l2_plane32))) + kp->length * sizeof(*uplane32))) return -EFAULT; /* We don't really care if userspace decides to kill itself * by passing a very big num_planes value */ - uplane = compat_alloc_user_space(kp->length * - sizeof(struct v4l2_plane)); + uplane = compat_alloc_user_space(kp->length * sizeof(*uplane)); kp->m.planes = (__force struct v4l2_plane *)uplane; for (num_planes = 0; num_planes < kp->length; num_planes++) { @@ -445,7 +443,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user int num_planes; int ret; - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(kp->index, &up->index) || put_user(kp->type, &up->type) || put_user(kp->flags, &up->flags) || @@ -456,8 +454,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user put_user(kp->field, &up->field) || put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) || - copy_to_user(&up->timecode, &kp->timecode, - sizeof(struct v4l2_timecode)) || + copy_to_user(&up->timecode, &kp->timecode, sizeof(kp->timecode)) || put_user(kp->sequence, &up->sequence) || put_user(kp->reserved2, &up->reserved2) || put_user(kp->reserved, &up->reserved) || @@ -525,7 +522,7 @@ static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame { u32 tmp; - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(tmp, &up->base) || get_user(kp->capability, &up->capability) || get_user(kp->flags, &up->flags) || @@ -539,7 +536,7 @@ static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame { u32 tmp = (u32)((unsigned long)kp->base); - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(tmp, &up->base) || put_user(kp->capability, &up->capability) || put_user(kp->flags, &up->flags) || @@ -564,14 +561,14 @@ struct v4l2_input32 { Otherwise it is identical to the 32-bit version. */ static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up) { - if (copy_from_user(kp, up, sizeof(struct v4l2_input32))) + if (copy_from_user(kp, up, sizeof(*up))) return -EFAULT; return 0; } static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up) { - if (copy_to_user(up, kp, sizeof(struct v4l2_input32))) + if (copy_to_user(up, kp, sizeof(*up))) return -EFAULT; return 0; } @@ -619,12 +616,11 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext unsigned int n; compat_caddr_t p; - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(kp->which, &up->which) || get_user(kp->count, &up->count) || get_user(kp->error_idx, &up->error_idx) || - copy_from_user(kp->reserved, up->reserved, - sizeof(kp->reserved))) + copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved))) return -EFAULT; if (kp->count == 0) { kp->controls = NULL; @@ -635,11 +631,9 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext if (get_user(p, &up->controls)) return -EFAULT; ucontrols = compat_ptr(p); - if (!access_ok(VERIFY_READ, ucontrols, - kp->count * sizeof(struct v4l2_ext_control32))) + if (!access_ok(VERIFY_READ, ucontrols, kp->count * sizeof(*ucontrols))) return -EFAULT; - kcontrols = compat_alloc_user_space(kp->count * - sizeof(struct v4l2_ext_control)); + kcontrols = compat_alloc_user_space(kp->count * sizeof(*kcontrols)); kp->controls = (__force struct v4l2_ext_control *)kcontrols; for (n = 0; n < kp->count; n++) { u32 id; @@ -671,7 +665,7 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext int n = kp->count; compat_caddr_t p; - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(kp->which, &up->which) || put_user(kp->count, &up->count) || put_user(kp->error_idx, &up->error_idx) || @@ -683,8 +677,7 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext if (get_user(p, &up->controls)) return -EFAULT; ucontrols = compat_ptr(p); - if (!access_ok(VERIFY_WRITE, ucontrols, - n * sizeof(struct v4l2_ext_control32))) + if (!access_ok(VERIFY_WRITE, ucontrols, n * sizeof(*ucontrols))) return -EFAULT; while (--n >= 0) { @@ -721,7 +714,7 @@ struct v4l2_event32 { static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *up) { - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_event32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(kp->type, &up->type) || copy_to_user(&up->u, &kp->u, sizeof(kp->u)) || put_user(kp->pending, &up->pending) || @@ -729,7 +722,7 @@ static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *u put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || put_user(kp->timestamp.tv_nsec, &up->timestamp.tv_nsec) || put_user(kp->id, &up->id) || - copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32))) + copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved))) return -EFAULT; return 0; } @@ -746,7 +739,7 @@ static int get_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) { u32 tmp; - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_edid32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(kp->pad, &up->pad) || get_user(kp->start_block, &up->start_block) || get_user(kp->blocks, &up->blocks) || @@ -761,7 +754,7 @@ static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) { u32 tmp = (u32)((unsigned long)kp->edid); - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_edid32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(kp->pad, &up->pad) || put_user(kp->start_block, &up->start_block) || put_user(kp->blocks, &up->blocks) ||

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [git:media_tree/master] media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32 Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Wed Jan 24 04:45:29 2018 -0500 These helper functions do not really help. Move the code to the __get/put_v4l2_format32 functions. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 124 +++++--------------------- 1 file changed, 24 insertions(+), 100 deletions(-) --- diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 83066b21b0b2..c7e9d29d0e33 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -92,92 +92,6 @@ static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user return 0; } -static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format))) - return -EFAULT; - return 0; -} - -static inline int get_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp, - struct v4l2_pix_format_mplane __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format_mplane))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp, - struct v4l2_pix_format_mplane __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format_mplane))) - return -EFAULT; - return 0; -} - -static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format))) - return -EFAULT; - return 0; -} - -static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format))) - return -EFAULT; - return 0; -} - -static inline int get_v4l2_sdr_format(struct v4l2_sdr_format *kp, struct v4l2_sdr_format __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_sdr_format))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_sdr_format(struct v4l2_sdr_format *kp, struct v4l2_sdr_format __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_sdr_format))) - return -EFAULT; - return 0; -} - -static inline int get_v4l2_meta_format(struct v4l2_meta_format *kp, struct v4l2_meta_format __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_meta_format))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_meta_format(struct v4l2_meta_format *kp, struct v4l2_meta_format __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_meta_format))) - return -EFAULT; - return 0; -} - struct v4l2_format32 { __u32 type; /* enum v4l2_buf_type */ union { @@ -217,25 +131,30 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us switch (kp->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: case V4L2_BUF_TYPE_VIDEO_OUTPUT: - return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix); + return copy_from_user(&kp->fmt.pix, &up->fmt.pix, + sizeof(kp->fmt.pix)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - return get_v4l2_pix_format_mplane(&kp->fmt.pix_mp, - &up->fmt.pix_mp); + return copy_from_user(&kp->fmt.pix_mp, &up->fmt.pix_mp, + sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: return get_v4l2_window32(&kp->fmt.win, &up->fmt.win); case V4L2_BUF_TYPE_VBI_CAPTURE: case V4L2_BUF_TYPE_VBI_OUTPUT: - return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi); + return copy_from_user(&kp->fmt.vbi, &up->fmt.vbi, + sizeof(kp->fmt.vbi)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced); + return copy_from_user(&kp->fmt.sliced, &up->fmt.sliced, + sizeof(kp->fmt.sliced)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SDR_CAPTURE: case V4L2_BUF_TYPE_SDR_OUTPUT: - return get_v4l2_sdr_format(&kp->fmt.sdr, &up->fmt.sdr); + return copy_from_user(&kp->fmt.sdr, &up->fmt.sdr, + sizeof(kp->fmt.sdr)) ? -EFAULT : 0; case V4L2_BUF_TYPE_META_CAPTURE: - return get_v4l2_meta_format(&kp->fmt.meta, &up->fmt.meta); + return copy_from_user(&kp->fmt.meta, &up->fmt.meta, + sizeof(kp->fmt.meta)) ? -EFAULT : 0; default: pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", kp->type); @@ -266,25 +185,30 @@ static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us switch (kp->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: case V4L2_BUF_TYPE_VIDEO_OUTPUT: - return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix); + return copy_to_user(&up->fmt.pix, &kp->fmt.pix, + sizeof(kp->fmt.pix)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - return put_v4l2_pix_format_mplane(&kp->fmt.pix_mp, - &up->fmt.pix_mp); + return copy_to_user(&up->fmt.pix_mp, &kp->fmt.pix_mp, + sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: return put_v4l2_window32(&kp->fmt.win, &up->fmt.win); case V4L2_BUF_TYPE_VBI_CAPTURE: case V4L2_BUF_TYPE_VBI_OUTPUT: - return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi); + return copy_to_user(&up->fmt.vbi, &kp->fmt.vbi, + sizeof(kp->fmt.vbi)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced); + return copy_to_user(&up->fmt.sliced, &kp->fmt.sliced, + sizeof(kp->fmt.sliced)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SDR_CAPTURE: case V4L2_BUF_TYPE_SDR_OUTPUT: - return put_v4l2_sdr_format(&kp->fmt.sdr, &up->fmt.sdr); + return copy_to_user(&up->fmt.sdr, &kp->fmt.sdr, + sizeof(kp->fmt.sdr)) ? -EFAULT : 0; case V4L2_BUF_TYPE_META_CAPTURE: - return put_v4l2_meta_format(&kp->fmt.meta, &up->fmt.meta); + return copy_to_user(&up->fmt.meta, &kp->fmt.meta, + sizeof(kp->fmt.meta)) ? -EFAULT : 0; default: pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", kp->type);

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [git:media_tree/master] media: v4l2-compat-ioctl32.c: fix the indentation

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-compat-ioctl32.c: fix the indentation Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Wed Jan 24 04:35:48 2018 -0500 The indentation of this source is all over the place. Fix this. This patch only changes whitespace. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 212 +++++++++++++------------- 1 file changed, 107 insertions(+), 105 deletions(-) --- diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 76ed43e774dd..83066b21b0b2 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -49,12 +49,12 @@ struct v4l2_window32 { static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) { if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) || - copy_from_user(&kp->w, &up->w, sizeof(up->w)) || - get_user(kp->field, &up->field) || - get_user(kp->chromakey, &up->chromakey) || - get_user(kp->clipcount, &up->clipcount) || - get_user(kp->global_alpha, &up->global_alpha)) - return -EFAULT; + copy_from_user(&kp->w, &up->w, sizeof(up->w)) || + get_user(kp->field, &up->field) || + get_user(kp->chromakey, &up->chromakey) || + get_user(kp->clipcount, &up->clipcount) || + get_user(kp->global_alpha, &up->global_alpha)) + return -EFAULT; if (kp->clipcount > 2048) return -EINVAL; if (kp->clipcount) { @@ -84,11 +84,11 @@ static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) { if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) || - put_user(kp->field, &up->field) || - put_user(kp->chromakey, &up->chromakey) || - put_user(kp->clipcount, &up->clipcount) || - put_user(kp->global_alpha, &up->global_alpha)) - return -EFAULT; + put_user(kp->field, &up->field) || + put_user(kp->chromakey, &up->chromakey) || + put_user(kp->clipcount, &up->clipcount) || + put_user(kp->global_alpha, &up->global_alpha)) + return -EFAULT; return 0; } @@ -100,7 +100,7 @@ static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pi } static inline int get_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp, - struct v4l2_pix_format_mplane __user *up) + struct v4l2_pix_format_mplane __user *up) { if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format_mplane))) return -EFAULT; @@ -115,7 +115,7 @@ static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pi } static inline int put_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp, - struct v4l2_pix_format_mplane __user *up) + struct v4l2_pix_format_mplane __user *up) { if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format_mplane))) return -EFAULT; @@ -238,7 +238,7 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us return get_v4l2_meta_format(&kp->fmt.meta, &up->fmt.meta); default: pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", - kp->type); + kp->type); return -EINVAL; } } @@ -287,7 +287,7 @@ static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us return put_v4l2_meta_format(&kp->fmt.meta, &up->fmt.meta); default: pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", - kp->type); + kp->type); return -EINVAL; } } @@ -321,7 +321,7 @@ static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 { /* other fields are not set by the user, nor used by the driver */ if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) || - get_user(kp->index, &up->index)) + get_user(kp->index, &up->index)) return -EFAULT; return 0; } @@ -329,13 +329,14 @@ static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up) { if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) || - put_user(kp->index, &up->index) || - put_user(kp->id, &up->id) || - copy_to_user(up->name, kp->name, 24) || - copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) || - put_user(kp->framelines, &up->framelines) || - copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32))) - return -EFAULT; + put_user(kp->index, &up->index) || + put_user(kp->id, &up->id) || + copy_to_user(up->name, kp->name, 24) || + copy_to_user(&up->frameperiod, &kp->frameperiod, + sizeof(kp->frameperiod)) || + put_user(kp->framelines, &up->framelines) || + copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32))) + return -EFAULT; return 0; } @@ -375,14 +376,14 @@ struct v4l2_buffer32 { }; static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32, - enum v4l2_memory memory) + enum v4l2_memory memory) { void __user *up_pln; compat_long_t p; if (copy_in_user(up, up32, 2 * sizeof(__u32)) || - copy_in_user(&up->data_offset, &up32->data_offset, - sizeof(__u32))) + copy_in_user(&up->data_offset, &up32->data_offset, + sizeof(__u32))) return -EFAULT; if (memory == V4L2_MEMORY_USERPTR) { @@ -396,7 +397,7 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ return -EFAULT; } else { if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset, - sizeof(__u32))) + sizeof(__u32))) return -EFAULT; } @@ -404,23 +405,23 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ } static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32, - enum v4l2_memory memory) + enum v4l2_memory memory) { if (copy_in_user(up32, up, 2 * sizeof(__u32)) || - copy_in_user(&up32->data_offset, &up->data_offset, - sizeof(__u32))) + copy_in_user(&up32->data_offset, &up->data_offset, + sizeof(__u32))) return -EFAULT; /* For MMAP, driver might've set up the offset, so copy it back. * USERPTR stays the same (was userspace-provided), so no copying. */ if (memory == V4L2_MEMORY_MMAP) if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset, - sizeof(__u32))) + sizeof(__u32))) return -EFAULT; /* For DMABUF, driver might've set up the fd, so copy it back. */ if (memory == V4L2_MEMORY_DMABUF) if (copy_in_user(&up32->m.fd, &up->m.fd, - sizeof(int))) + sizeof(int))) return -EFAULT; return 0; @@ -434,19 +435,19 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user int ret; if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) || - get_user(kp->index, &up->index) || - get_user(kp->type, &up->type) || - get_user(kp->flags, &up->flags) || - get_user(kp->memory, &up->memory) || - get_user(kp->length, &up->length)) - return -EFAULT; + get_user(kp->index, &up->index) || + get_user(kp->type, &up->type) || + get_user(kp->flags, &up->flags) || + get_user(kp->memory, &up->memory) || + get_user(kp->length, &up->length)) + return -EFAULT; if (V4L2_TYPE_IS_OUTPUT(kp->type)) if (get_user(kp->bytesused, &up->bytesused) || - get_user(kp->field, &up->field) || - get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - get_user(kp->timestamp.tv_usec, - &up->timestamp.tv_usec)) + get_user(kp->field, &up->field) || + get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || + get_user(kp->timestamp.tv_usec, + &up->timestamp.tv_usec)) return -EFAULT; if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) { @@ -466,7 +467,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user uplane32 = compat_ptr(p); if (!access_ok(VERIFY_READ, uplane32, - kp->length * sizeof(struct v4l2_plane32))) + kp->length * sizeof(struct v4l2_plane32))) return -EFAULT; /* We don't really care if userspace decides to kill itself @@ -490,12 +491,12 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user break; case V4L2_MEMORY_USERPTR: { - compat_long_t tmp; + compat_long_t tmp; - if (get_user(tmp, &up->m.userptr)) - return -EFAULT; + if (get_user(tmp, &up->m.userptr)) + return -EFAULT; - kp->m.userptr = (unsigned long)compat_ptr(tmp); + kp->m.userptr = (unsigned long)compat_ptr(tmp); } break; case V4L2_MEMORY_OVERLAY: @@ -521,22 +522,23 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user int ret; if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) || - put_user(kp->index, &up->index) || - put_user(kp->type, &up->type) || - put_user(kp->flags, &up->flags) || - put_user(kp->memory, &up->memory)) - return -EFAULT; + put_user(kp->index, &up->index) || + put_user(kp->type, &up->type) || + put_user(kp->flags, &up->flags) || + put_user(kp->memory, &up->memory)) + return -EFAULT; if (put_user(kp->bytesused, &up->bytesused) || - put_user(kp->field, &up->field) || - put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) || - copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) || - put_user(kp->sequence, &up->sequence) || - put_user(kp->reserved2, &up->reserved2) || - put_user(kp->reserved, &up->reserved) || - put_user(kp->length, &up->length)) - return -EFAULT; + put_user(kp->field, &up->field) || + put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || + put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) || + copy_to_user(&up->timecode, &kp->timecode, + sizeof(struct v4l2_timecode)) || + put_user(kp->sequence, &up->sequence) || + put_user(kp->reserved2, &up->reserved2) || + put_user(kp->reserved, &up->reserved) || + put_user(kp->length, &up->length)) + return -EFAULT; if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) { num_planes = kp->length; @@ -600,11 +602,11 @@ static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame u32 tmp; if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) || - get_user(tmp, &up->base) || - get_user(kp->capability, &up->capability) || - get_user(kp->flags, &up->flags) || - copy_from_user(&kp->fmt, &up->fmt, sizeof(up->fmt))) - return -EFAULT; + get_user(tmp, &up->base) || + get_user(kp->capability, &up->capability) || + get_user(kp->flags, &up->flags) || + copy_from_user(&kp->fmt, &up->fmt, sizeof(up->fmt))) + return -EFAULT; kp->base = (__force void *)compat_ptr(tmp); return 0; } @@ -614,11 +616,11 @@ static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame u32 tmp = (u32)((unsigned long)kp->base); if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) || - put_user(tmp, &up->base) || - put_user(kp->capability, &up->capability) || - put_user(kp->flags, &up->flags) || - copy_to_user(&up->fmt, &kp->fmt, sizeof(up->fmt))) - return -EFAULT; + put_user(tmp, &up->base) || + put_user(kp->capability, &up->capability) || + put_user(kp->flags, &up->flags) || + copy_to_user(&up->fmt, &kp->fmt, sizeof(up->fmt))) + return -EFAULT; return 0; } @@ -694,12 +696,12 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext compat_caddr_t p; if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) || - get_user(kp->which, &up->which) || - get_user(kp->count, &up->count) || - get_user(kp->error_idx, &up->error_idx) || - copy_from_user(kp->reserved, up->reserved, - sizeof(kp->reserved))) - return -EFAULT; + get_user(kp->which, &up->which) || + get_user(kp->count, &up->count) || + get_user(kp->error_idx, &up->error_idx) || + copy_from_user(kp->reserved, up->reserved, + sizeof(kp->reserved))) + return -EFAULT; if (kp->count == 0) { kp->controls = NULL; return 0; @@ -710,7 +712,7 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext return -EFAULT; ucontrols = compat_ptr(p); if (!access_ok(VERIFY_READ, ucontrols, - kp->count * sizeof(struct v4l2_ext_control32))) + kp->count * sizeof(struct v4l2_ext_control32))) return -EFAULT; kcontrols = compat_alloc_user_space(kp->count * sizeof(struct v4l2_ext_control)); @@ -746,11 +748,11 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext compat_caddr_t p; if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) || - put_user(kp->which, &up->which) || - put_user(kp->count, &up->count) || - put_user(kp->error_idx, &up->error_idx) || - copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) - return -EFAULT; + put_user(kp->which, &up->which) || + put_user(kp->count, &up->count) || + put_user(kp->error_idx, &up->error_idx) || + copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) + return -EFAULT; if (!kp->count) return 0; @@ -758,7 +760,7 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext return -EFAULT; ucontrols = compat_ptr(p); if (!access_ok(VERIFY_WRITE, ucontrols, - n * sizeof(struct v4l2_ext_control32))) + n * sizeof(struct v4l2_ext_control32))) return -EFAULT; while (--n >= 0) { @@ -796,15 +798,15 @@ struct v4l2_event32 { static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *up) { if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_event32)) || - put_user(kp->type, &up->type) || - copy_to_user(&up->u, &kp->u, sizeof(kp->u)) || - put_user(kp->pending, &up->pending) || - put_user(kp->sequence, &up->sequence) || - put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - put_user(kp->timestamp.tv_nsec, &up->timestamp.tv_nsec) || - put_user(kp->id, &up->id) || - copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32))) - return -EFAULT; + put_user(kp->type, &up->type) || + copy_to_user(&up->u, &kp->u, sizeof(kp->u)) || + put_user(kp->pending, &up->pending) || + put_user(kp->sequence, &up->sequence) || + put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || + put_user(kp->timestamp.tv_nsec, &up->timestamp.tv_nsec) || + put_user(kp->id, &up->id) || + copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32))) + return -EFAULT; return 0; } @@ -821,12 +823,12 @@ static int get_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) u32 tmp; if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_edid32)) || - get_user(kp->pad, &up->pad) || - get_user(kp->start_block, &up->start_block) || - get_user(kp->blocks, &up->blocks) || - get_user(tmp, &up->edid) || - copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved))) - return -EFAULT; + get_user(kp->pad, &up->pad) || + get_user(kp->start_block, &up->start_block) || + get_user(kp->blocks, &up->blocks) || + get_user(tmp, &up->edid) || + copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved))) + return -EFAULT; kp->edid = (__force u8 *)compat_ptr(tmp); return 0; } @@ -836,12 +838,12 @@ static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) u32 tmp = (u32)((unsigned long)kp->edid); if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_edid32)) || - put_user(kp->pad, &up->pad) || - put_user(kp->start_block, &up->start_block) || - put_user(kp->blocks, &up->blocks) || - put_user(tmp, &up->edid) || - copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) - return -EFAULT; + put_user(kp->pad, &up->pad) || + put_user(kp->start_block, &up->start_block) || + put_user(kp->blocks, &up->blocks) || + put_user(tmp, &up->edid) || + copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) + return -EFAULT; return 0; }

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [git:media_tree/master] media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Wed Jan 24 08:37:04 2018 -0500 The result of the VIDIOC_PREPARE_BUF ioctl was never copied back to userspace since it was missing in the switch. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 1 + 1 file changed, 1 insertion(+) --- diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index e48d59046086..76ed43e774dd 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -1052,6 +1052,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar err = put_v4l2_create32(&karg.v2crt, up); break; + case VIDIOC_PREPARE_BUF: case VIDIOC_QUERYBUF: case VIDIOC_QBUF: case VIDIOC_DQBUF:

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [git:media_tree/master] media: v4l2-ioctl.c: don't copy back the result for -ENOTTY

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-ioctl.c: don't copy back the result for -ENOTTY Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Tue Jan 30 03:50:01 2018 -0500 If the ioctl returned -ENOTTY, then don't bother copying back the result as there is no point. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-ioctl.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index c7f6b65d3ad7..260288ca4f55 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -2900,8 +2900,11 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, /* Handles IOCTL */ err = func(file, cmd, parg); - if (err == -ENOIOCTLCMD) + if (err == -ENOTTY || err == -ENOIOCTLCMD) { err = -ENOTTY; + goto out; + } + if (err == 0) { if (cmd == VIDIOC_DQBUF) trace_v4l2_dqbuf(video_devdata(file)->minor, parg);

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [git:media_tree/master] media: v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Wed Jan 24 08:28:10 2018 -0500 Don't duplicate the buffer type checks in enum/g/s/try_fmt. The check_fmt function does that already. It is hard to keep the checks in sync for all these functions and in fact the check for VBI was wrong in the _fmt functions as it allowed SDR types as well. This caused a v4l2-compliance failure for /dev/swradio0 using vivid. This simplifies the code and keeps the check in one place and fixes the SDR/VBI bug. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/v4l2-core/v4l2-ioctl.c | 140 ++++++++++++++--------------------- 1 file changed, 54 insertions(+), 86 deletions(-) --- diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 59d2100eeff6..c7f6b65d3ad7 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1316,52 +1316,50 @@ static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_fmtdesc *p = arg; - struct video_device *vfd = video_devdata(file); - bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; - bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; - bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; - bool is_rx = vfd->vfl_dir != VFL_DIR_TX; - bool is_tx = vfd->vfl_dir != VFL_DIR_RX; - int ret = -EINVAL; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; + ret = -EINVAL; switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_enum_fmt_vid_cap)) + if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) break; ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); break; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane)) + if (unlikely(!ops->vidioc_enum_fmt_vid_cap_mplane)) break; ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg); break; case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay)) + if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) break; ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); break; case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out)) + if (unlikely(!ops->vidioc_enum_fmt_vid_out)) break; ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); break; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane)) + if (unlikely(!ops->vidioc_enum_fmt_vid_out_mplane)) break; ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg); break; case V4L2_BUF_TYPE_SDR_CAPTURE: - if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap)) + if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) break; ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); break; case V4L2_BUF_TYPE_SDR_OUTPUT: - if (unlikely(!is_tx || !is_sdr || !ops->vidioc_enum_fmt_sdr_out)) + if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) break; ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); break; case V4L2_BUF_TYPE_META_CAPTURE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_meta_cap)) + if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) break; ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); break; @@ -1375,13 +1373,10 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_format *p = arg; - struct video_device *vfd = video_devdata(file); - bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; - bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; - bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; - bool is_rx = vfd->vfl_dir != VFL_DIR_TX; - bool is_tx = vfd->vfl_dir != VFL_DIR_RX; - int ret; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; /* * fmt can't be cleared for these overlay types due to the 'clips' @@ -1409,7 +1404,7 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_g_fmt_vid_cap)) + if (unlikely(!ops->vidioc_g_fmt_vid_cap)) break; p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); @@ -1417,23 +1412,15 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane)) - break; return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay)) - break; return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap)) - break; return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap)) - break; return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out)) + if (unlikely(!ops->vidioc_g_fmt_vid_out)) break; p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); @@ -1441,32 +1428,18 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane)) - break; return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay)) - break; return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out)) - break; return ops->vidioc_g_fmt_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out)) - break; return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SDR_CAPTURE: - if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap)) - break; return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); case V4L2_BUF_TYPE_SDR_OUTPUT: - if (unlikely(!is_tx || !is_sdr || !ops->vidioc_g_fmt_sdr_out)) - break; return ops->vidioc_g_fmt_sdr_out(file, fh, arg); case V4L2_BUF_TYPE_META_CAPTURE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_meta_cap)) - break; return ops->vidioc_g_fmt_meta_cap(file, fh, arg); } return -EINVAL; @@ -1492,12 +1465,10 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, { struct v4l2_format *p = arg; struct video_device *vfd = video_devdata(file); - bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; - bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; - bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; - bool is_rx = vfd->vfl_dir != VFL_DIR_TX; - bool is_tx = vfd->vfl_dir != VFL_DIR_RX; - int ret; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; ret = v4l_enable_media_source(vfd); if (ret) @@ -1506,37 +1477,37 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_s_fmt_vid_cap)) + if (unlikely(!ops->vidioc_s_fmt_vid_cap)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); /* just in case the driver zeroed it again */ p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; - if (is_tch) + if (vfd->vfl_type == VFL_TYPE_TOUCH) v4l_pix_format_touch(&p->fmt.pix); return ret; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane)) + if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay)) + if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap)) + if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.vbi); return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap)) + if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sliced); return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out)) + if (unlikely(!ops->vidioc_s_fmt_vid_out)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); @@ -1544,37 +1515,37 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane)) + if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay)) + if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out)) + if (unlikely(!ops->vidioc_s_fmt_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.vbi); return ops->vidioc_s_fmt_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out)) + if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.sliced); return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SDR_CAPTURE: - if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap)) + if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sdr); return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); case V4L2_BUF_TYPE_SDR_OUTPUT: - if (unlikely(!is_tx || !is_sdr || !ops->vidioc_s_fmt_sdr_out)) + if (unlikely(!ops->vidioc_s_fmt_sdr_out)) break; CLEAR_AFTER_FIELD(p, fmt.sdr); return ops->vidioc_s_fmt_sdr_out(file, fh, arg); case V4L2_BUF_TYPE_META_CAPTURE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_meta_cap)) + if (unlikely(!ops->vidioc_s_fmt_meta_cap)) break; CLEAR_AFTER_FIELD(p, fmt.meta); return ops->vidioc_s_fmt_meta_cap(file, fh, arg); @@ -1586,19 +1557,16 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_format *p = arg; - struct video_device *vfd = video_devdata(file); - bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; - bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; - bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; - bool is_rx = vfd->vfl_dir != VFL_DIR_TX; - bool is_tx = vfd->vfl_dir != VFL_DIR_RX; - int ret; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; v4l_sanitize_format(p); switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_try_fmt_vid_cap)) + if (unlikely(!ops->vidioc_try_fmt_vid_cap)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); @@ -1606,27 +1574,27 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane)) + if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay)) + if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap)) + if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.vbi); return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap)) + if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sliced); return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out)) + if (unlikely(!ops->vidioc_try_fmt_vid_out)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); @@ -1634,37 +1602,37 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane)) + if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay)) + if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out)) + if (unlikely(!ops->vidioc_try_fmt_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.vbi); return ops->vidioc_try_fmt_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out)) + if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.sliced); return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SDR_CAPTURE: - if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap)) + if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sdr); return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); case V4L2_BUF_TYPE_SDR_OUTPUT: - if (unlikely(!is_tx || !is_sdr || !ops->vidioc_try_fmt_sdr_out)) + if (unlikely(!ops->vidioc_try_fmt_sdr_out)) break; CLEAR_AFTER_FIELD(p, fmt.sdr); return ops->vidioc_try_fmt_sdr_out(file, fh, arg); case V4L2_BUF_TYPE_META_CAPTURE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_meta_cap)) + if (unlikely(!ops->vidioc_try_fmt_meta_cap)) break; CLEAR_AFTER_FIELD(p, fmt.meta); return ops->vidioc_try_fmt_meta_cap(file, fh, arg);

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [git:media_tree/master] media: vivid: fix module load error when enabling fb and no_error_inj=1

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: vivid: fix module load error when enabling fb and no_error_inj=1 Author: Hans Verkuil <hans.verkuil(a)cisco.com> Date: Thu Jan 25 06:57:45 2018 -0500 If the framebuffer is enabled and error injection is disabled, then creating the controls for the video output device would fail with an error. This is because the Clear Framebuffer control uses the 'vivid control class' and that control class isn't added if error injection is disabled. In addition, this control was added to e.g. vbi devices as well, which makes no sense. Move this control to its own control handler and handle it correctly. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/platform/vivid/vivid-core.h | 1 + drivers/media/platform/vivid/vivid-ctrls.c | 35 +++++++++++++++++++++++++----- 2 files changed, 30 insertions(+), 6 deletions(-) --- diff --git a/drivers/media/platform/vivid/vivid-core.h b/drivers/media/platform/vivid/vivid-core.h index 50802e650750..c90e4a0ab94e 100644 --- a/drivers/media/platform/vivid/vivid-core.h +++ b/drivers/media/platform/vivid/vivid-core.h @@ -154,6 +154,7 @@ struct vivid_dev { struct v4l2_ctrl_handler ctrl_hdl_streaming; struct v4l2_ctrl_handler ctrl_hdl_sdtv_cap; struct v4l2_ctrl_handler ctrl_hdl_loop_cap; + struct v4l2_ctrl_handler ctrl_hdl_fb; struct video_device vid_cap_dev; struct v4l2_ctrl_handler ctrl_hdl_vid_cap; struct video_device vid_out_dev; diff --git a/drivers/media/platform/vivid/vivid-ctrls.c b/drivers/media/platform/vivid/vivid-ctrls.c index 34731f71cc00..3f9d354827af 100644 --- a/drivers/media/platform/vivid/vivid-ctrls.c +++ b/drivers/media/platform/vivid/vivid-ctrls.c @@ -120,9 +120,6 @@ static int vivid_user_gen_s_ctrl(struct v4l2_ctrl *ctrl) clear_bit(V4L2_FL_REGISTERED, &dev->radio_rx_dev.flags); clear_bit(V4L2_FL_REGISTERED, &dev->radio_tx_dev.flags); break; - case VIVID_CID_CLEAR_FB: - vivid_clear_fb(dev); - break; case VIVID_CID_BUTTON: dev->button_pressed = 30; break; @@ -274,8 +271,28 @@ static const struct v4l2_ctrl_config vivid_ctrl_disconnect = { .type = V4L2_CTRL_TYPE_BUTTON, }; + +/* Framebuffer Controls */ + +static int vivid_fb_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct vivid_dev *dev = container_of(ctrl->handler, + struct vivid_dev, ctrl_hdl_fb); + + switch (ctrl->id) { + case VIVID_CID_CLEAR_FB: + vivid_clear_fb(dev); + break; + } + return 0; +} + +static const struct v4l2_ctrl_ops vivid_fb_ctrl_ops = { + .s_ctrl = vivid_fb_s_ctrl, +}; + static const struct v4l2_ctrl_config vivid_ctrl_clear_fb = { - .ops = &vivid_user_gen_ctrl_ops, + .ops = &vivid_fb_ctrl_ops, .id = VIVID_CID_CLEAR_FB, .name = "Clear Framebuffer", .type = V4L2_CTRL_TYPE_BUTTON, @@ -1357,6 +1374,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, struct v4l2_ctrl_handler *hdl_streaming = &dev->ctrl_hdl_streaming; struct v4l2_ctrl_handler *hdl_sdtv_cap = &dev->ctrl_hdl_sdtv_cap; struct v4l2_ctrl_handler *hdl_loop_cap = &dev->ctrl_hdl_loop_cap; + struct v4l2_ctrl_handler *hdl_fb = &dev->ctrl_hdl_fb; struct v4l2_ctrl_handler *hdl_vid_cap = &dev->ctrl_hdl_vid_cap; struct v4l2_ctrl_handler *hdl_vid_out = &dev->ctrl_hdl_vid_out; struct v4l2_ctrl_handler *hdl_vbi_cap = &dev->ctrl_hdl_vbi_cap; @@ -1384,10 +1402,12 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, v4l2_ctrl_new_custom(hdl_sdtv_cap, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_loop_cap, 1); v4l2_ctrl_new_custom(hdl_loop_cap, &vivid_ctrl_class, NULL); + v4l2_ctrl_handler_init(hdl_fb, 1); + v4l2_ctrl_new_custom(hdl_fb, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_vid_cap, 55); v4l2_ctrl_new_custom(hdl_vid_cap, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_vid_out, 26); - if (!no_error_inj) + if (!no_error_inj || dev->has_fb) v4l2_ctrl_new_custom(hdl_vid_out, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_vbi_cap, 21); v4l2_ctrl_new_custom(hdl_vbi_cap, &vivid_ctrl_class, NULL); @@ -1561,7 +1581,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, v4l2_ctrl_new_custom(hdl_loop_cap, &vivid_ctrl_loop_video, NULL); if (dev->has_fb) - v4l2_ctrl_new_custom(hdl_user_gen, &vivid_ctrl_clear_fb, NULL); + v4l2_ctrl_new_custom(hdl_fb, &vivid_ctrl_clear_fb, NULL); if (dev->has_radio_rx) { v4l2_ctrl_new_custom(hdl_radio_rx, &vivid_ctrl_radio_hw_seek_mode, NULL); @@ -1658,6 +1678,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, v4l2_ctrl_add_handler(hdl_vid_cap, hdl_streaming, NULL); v4l2_ctrl_add_handler(hdl_vid_cap, hdl_sdtv_cap, NULL); v4l2_ctrl_add_handler(hdl_vid_cap, hdl_loop_cap, NULL); + v4l2_ctrl_add_handler(hdl_vid_cap, hdl_fb, NULL); if (hdl_vid_cap->error) return hdl_vid_cap->error; dev->vid_cap_dev.ctrl_handler = hdl_vid_cap; @@ -1666,6 +1687,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, v4l2_ctrl_add_handler(hdl_vid_out, hdl_user_gen, NULL); v4l2_ctrl_add_handler(hdl_vid_out, hdl_user_aud, NULL); v4l2_ctrl_add_handler(hdl_vid_out, hdl_streaming, NULL); + v4l2_ctrl_add_handler(hdl_vid_out, hdl_fb, NULL); if (hdl_vid_out->error) return hdl_vid_out->error; dev->vid_out_dev.ctrl_handler = hdl_vid_out; @@ -1725,4 +1747,5 @@ void vivid_free_controls(struct vivid_dev *dev) v4l2_ctrl_handler_free(&dev->ctrl_hdl_streaming); v4l2_ctrl_handler_free(&dev->ctrl_hdl_sdtv_cap); v4l2_ctrl_handler_free(&dev->ctrl_hdl_loop_cap); + v4l2_ctrl_handler_free(&dev->ctrl_hdl_fb); }

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [PATCHv2 13/13] v4l2-compat-ioctl32.c: refactor, fix security bug in compat ioctl32

by Hans Verkuil

From: Daniel Mentz <danielmentz(a)google.com> The 32-bit compat v4l2 ioctl handling is implemented based on its 64-bit equivalent. It converts 32-bit data structures into its 64-bit equivalents and needs to provide the data to the 64-bit ioctl in user space memory which is commonly allocated using compat_alloc_user_space(). However, due to how that function is implemented, it can only be called a single time for every syscall invocation. Supposedly to avoid this limitation, the existing code uses a mix of memory from the kernel stack and memory allocated through compat_alloc_user_space(). Under normal circumstances, this would not work, because the 64-bit ioctl expects all pointers to point to user space memory. As a workaround, set_fs(KERNEL_DS) is called to temporarily disable this extra safety check and allow kernel pointers. However, this might introduce a security vulnerability: The result of the 32-bit to 64-bit conversion is writeable by user space because the output buffer has been allocated via compat_alloc_user_space(). A malicious user space process could then manipulate pointers inside this output buffer, and due to the previous set_fs(KERNEL_DS) call, functions like get_user() or put_user() no longer prevent kernel memory access. The new approach is to pre-calculate the total amount of user space memory that is needed, allocate it using compat_alloc_user_space() and then divide up the allocated memory to accommodate all data structures that need to be converted. An alternative approach would have been to retain the union type karg that they allocated on the kernel stack in do_video_ioctl(), copy all data from user space into karg and then back to user space. However, we decided against this approach because it does not align with other compat syscall implementations. Instead, we tried to replicate the get_user/put_user pairs as found in other places in the kernel: if (get_user(clipcount, &up->clipcount) || put_user(clipcount, &kp->clipcount)) return -EFAULT; Notes from hans.verkuil(a)cisco.com: This patch was taken from https://github.com/LineageOS/android_kernel_samsung_apq8084/commit/97b73395… Clearly nobody could be bothered to upstream this patch or at minimum tell us :-( We only heard about this a week ago. This patch was rebased and cleaned up. Compared to the original I also swapped the order of the convert_in_user arguments so that they matched copy_in_user. It was hard to review otherwise. I also replaced the ALLOC_USER_SPACE/ALLOC_AND_GET by a normal function. Signed-off-by: Daniel Mentz <danielmentz(a)google.com> Reported-by: C0RE Team Co-Developed-by: Hans Verkuil <hans.verkuil(a)cisco.com> Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 741 +++++++++++++++++--------- 1 file changed, 478 insertions(+), 263 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 3a1fca1440ac..100ea4b4f51f 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -22,6 +22,14 @@ #include <media/v4l2-ctrls.h> #include <media/v4l2-ioctl.h> +/* Use the same argument order as copy_in_user */ +#define assign_in_user(to, from) \ +({ \ + typeof(*from) __assign_tmp; \ + \ + get_user(__assign_tmp, from) || put_user(__assign_tmp, to); \ +}) + static long native_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { long ret = -ENOIOCTLCMD; @@ -48,37 +56,41 @@ struct v4l2_window32 { __u8 global_alpha; }; -static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) +static int get_v4l2_window32(struct v4l2_window __user *kp, + struct v4l2_window32 __user *up, + void __user *aux_buf, u32 aux_space) { struct v4l2_clip32 __user *uclips; struct v4l2_clip __user *kclips; compat_caddr_t p; - u32 n; + u32 clipcount; if (!access_ok(VERIFY_READ, up, sizeof(*up)) || - copy_from_user(&kp->w, &up->w, sizeof(up->w)) || - get_user(kp->field, &up->field) || - get_user(kp->chromakey, &up->chromakey) || - get_user(kp->clipcount, &up->clipcount) || - get_user(kp->global_alpha, &up->global_alpha)) + copy_in_user(&kp->w, &up->w, sizeof(up->w)) || + assign_in_user(&kp->field, &up->field) || + assign_in_user(&kp->chromakey, &up->chromakey) || + assign_in_user(&kp->global_alpha, &up->global_alpha) || + get_user(clipcount, &up->clipcount) || + put_user(clipcount, &kp->clipcount)) return -EFAULT; - if (kp->clipcount > 2048) + if (clipcount > 2048) return -EINVAL; - if (!kp->clipcount) { - kp->clips = NULL; - return 0; - } + if (!clipcount) + return put_user(NULL, &kp->clips); - n = kp->clipcount; if (get_user(p, &up->clips)) return -EFAULT; uclips = compat_ptr(p); - kclips = compat_alloc_user_space(n * sizeof(*kclips)); - kp->clips = kclips; - while (n--) { + if (aux_space < clipcount * sizeof(*kclips)) + return -EFAULT; + kclips = aux_buf; + if (put_user(kclips, &kp->clips)) + return -EFAULT; + + while (clipcount--) { if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c))) return -EFAULT; - if (put_user(n ? kclips + 1 : NULL, &kclips->next)) + if (put_user(clipcount ? kclips + 1 : NULL, &kclips->next)) return -EFAULT; uclips++; kclips++; @@ -86,27 +98,28 @@ static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user return 0; } -static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) +static int put_v4l2_window32(struct v4l2_window __user *kp, + struct v4l2_window32 __user *up) { struct v4l2_clip __user *kclips = kp->clips; struct v4l2_clip32 __user *uclips; - u32 n = kp->clipcount; compat_caddr_t p; - - if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) || - put_user(kp->field, &up->field) || - put_user(kp->chromakey, &up->chromakey) || - put_user(kp->clipcount, &up->clipcount) || - put_user(kp->global_alpha, &up->global_alpha)) + u32 clipcount; + + if (copy_in_user(&up->w, &kp->w, sizeof(kp->w)) || + assign_in_user(&up->field, &kp->field) || + assign_in_user(&up->chromakey, &kp->chromakey) || + assign_in_user(&up->global_alpha, &kp->global_alpha) || + get_user(clipcount, &kp->clipcount) || + put_user(clipcount, &up->clipcount)) return -EFAULT; - - if (!kp->clipcount) + if (!clipcount) return 0; if (get_user(p, &up->clips)) return -EFAULT; uclips = compat_ptr(p); - while (n--) { + while (clipcount--) { if (copy_in_user(&uclips->c, &kclips->c, sizeof(uclips->c))) return -EFAULT; uclips++; @@ -146,107 +159,164 @@ struct v4l2_create_buffers32 { __u32 reserved[8]; }; -static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) +static int __bufsize_v4l2_format(struct v4l2_format32 __user *up, u32 *size) +{ + u32 type; + + if (get_user(type, &up->type)) + return -EFAULT; + + switch (type) { + case V4L2_BUF_TYPE_VIDEO_OVERLAY: + case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: { + u32 clipcount; + + if (get_user(clipcount, &up->fmt.win.clipcount)) + return -EFAULT; + if (clipcount > 2048) + return -EINVAL; + *size = clipcount * sizeof(struct v4l2_clip); + return 0; + } + default: + *size = 0; + return 0; + } +} + +static int bufsize_v4l2_format(struct v4l2_format32 __user *up, u32 *size) +{ + if (!access_ok(VERIFY_READ, up, sizeof(*up))) + return -EFAULT; + return __bufsize_v4l2_format(up, size); +} + +static int __get_v4l2_format32(struct v4l2_format __user *kp, + struct v4l2_format32 __user *up, + void __user *aux_buf, u32 aux_space) { - if (get_user(kp->type, &up->type)) + u32 type; + + if (get_user(type, &up->type) || put_user(type, &kp->type)) return -EFAULT; - switch (kp->type) { + switch (type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: case V4L2_BUF_TYPE_VIDEO_OUTPUT: - return copy_from_user(&kp->fmt.pix, &up->fmt.pix, - sizeof(kp->fmt.pix)) ? -EFAULT : 0; + return copy_in_user(&kp->fmt.pix, &up->fmt.pix, + sizeof(kp->fmt.pix)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - return copy_from_user(&kp->fmt.pix_mp, &up->fmt.pix_mp, - sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0; + return copy_in_user(&kp->fmt.pix_mp, &up->fmt.pix_mp, + sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: - return get_v4l2_window32(&kp->fmt.win, &up->fmt.win); + return get_v4l2_window32(&kp->fmt.win, &up->fmt.win, + aux_buf, aux_space); case V4L2_BUF_TYPE_VBI_CAPTURE: case V4L2_BUF_TYPE_VBI_OUTPUT: - return copy_from_user(&kp->fmt.vbi, &up->fmt.vbi, - sizeof(kp->fmt.vbi)) ? -EFAULT : 0; + return copy_in_user(&kp->fmt.vbi, &up->fmt.vbi, + sizeof(kp->fmt.vbi)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - return copy_from_user(&kp->fmt.sliced, &up->fmt.sliced, - sizeof(kp->fmt.sliced)) ? -EFAULT : 0; + return copy_in_user(&kp->fmt.sliced, &up->fmt.sliced, + sizeof(kp->fmt.sliced)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SDR_CAPTURE: case V4L2_BUF_TYPE_SDR_OUTPUT: - return copy_from_user(&kp->fmt.sdr, &up->fmt.sdr, - sizeof(kp->fmt.sdr)) ? -EFAULT : 0; + return copy_in_user(&kp->fmt.sdr, &up->fmt.sdr, + sizeof(kp->fmt.sdr)) ? -EFAULT : 0; case V4L2_BUF_TYPE_META_CAPTURE: - return copy_from_user(&kp->fmt.meta, &up->fmt.meta, - sizeof(kp->fmt.meta)) ? -EFAULT : 0; + return copy_in_user(&kp->fmt.meta, &up->fmt.meta, + sizeof(kp->fmt.meta)) ? -EFAULT : 0; default: return -EINVAL; } } -static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) +static int get_v4l2_format32(struct v4l2_format __user *kp, + struct v4l2_format32 __user *up, + void __user *aux_buf, u32 aux_space) { if (!access_ok(VERIFY_READ, up, sizeof(*up))) return -EFAULT; - return __get_v4l2_format32(kp, up); + return __get_v4l2_format32(kp, up, aux_buf, aux_space); } -static int get_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up) +static int bufsize_v4l2_create(struct v4l2_create_buffers32 __user *up, + u32 *size) +{ + if (!access_ok(VERIFY_READ, up, sizeof(*up))) + return -EFAULT; + return __bufsize_v4l2_format(&up->format, size); +} + +static int get_v4l2_create32(struct v4l2_create_buffers __user *kp, + struct v4l2_create_buffers32 __user *up, + void __user *aux_buf, u32 aux_space) { if (!access_ok(VERIFY_READ, up, sizeof(*up)) || - copy_from_user(kp, up, offsetof(struct v4l2_create_buffers32, format))) + copy_in_user(kp, up, + offsetof(struct v4l2_create_buffers32, format))) return -EFAULT; - return __get_v4l2_format32(&kp->format, &up->format); + return __get_v4l2_format32(&kp->format, &up->format, + aux_buf, aux_space); } -static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) +static int __put_v4l2_format32(struct v4l2_format __user *kp, + struct v4l2_format32 __user *up) { - if (put_user(kp->type, &up->type)) + u32 type; + + if (get_user(type, &kp->type)) return -EFAULT; - switch (kp->type) { + switch (type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: case V4L2_BUF_TYPE_VIDEO_OUTPUT: - return copy_to_user(&up->fmt.pix, &kp->fmt.pix, + return copy_in_user(&up->fmt.pix, &kp->fmt.pix, sizeof(kp->fmt.pix)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - return copy_to_user(&up->fmt.pix_mp, &kp->fmt.pix_mp, + return copy_in_user(&up->fmt.pix_mp, &kp->fmt.pix_mp, sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: return put_v4l2_window32(&kp->fmt.win, &up->fmt.win); case V4L2_BUF_TYPE_VBI_CAPTURE: case V4L2_BUF_TYPE_VBI_OUTPUT: - return copy_to_user(&up->fmt.vbi, &kp->fmt.vbi, + return copy_in_user(&up->fmt.vbi, &kp->fmt.vbi, sizeof(kp->fmt.vbi)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - return copy_to_user(&up->fmt.sliced, &kp->fmt.sliced, + return copy_in_user(&up->fmt.sliced, &kp->fmt.sliced, sizeof(kp->fmt.sliced)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SDR_CAPTURE: case V4L2_BUF_TYPE_SDR_OUTPUT: - return copy_to_user(&up->fmt.sdr, &kp->fmt.sdr, + return copy_in_user(&up->fmt.sdr, &kp->fmt.sdr, sizeof(kp->fmt.sdr)) ? -EFAULT : 0; case V4L2_BUF_TYPE_META_CAPTURE: - return copy_to_user(&up->fmt.meta, &kp->fmt.meta, + return copy_in_user(&up->fmt.meta, &kp->fmt.meta, sizeof(kp->fmt.meta)) ? -EFAULT : 0; default: return -EINVAL; } } -static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) +static int put_v4l2_format32(struct v4l2_format __user *kp, + struct v4l2_format32 __user *up) { if (!access_ok(VERIFY_WRITE, up, sizeof(*up))) return -EFAULT; return __put_v4l2_format32(kp, up); } -static int put_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up) +static int put_v4l2_create32(struct v4l2_create_buffers __user *kp, + struct v4l2_create_buffers32 __user *up) { if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || - copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, format)) || - copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved))) + copy_in_user(up, kp, + offsetof(struct v4l2_create_buffers32, format)) || + copy_in_user(up->reserved, kp->reserved, sizeof(kp->reserved))) return -EFAULT; return __put_v4l2_format32(&kp->format, &up->format); } @@ -260,25 +330,27 @@ struct v4l2_standard32 { __u32 reserved[4]; }; -static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up) +static int get_v4l2_standard32(struct v4l2_standard __user *kp, + struct v4l2_standard32 __user *up) { /* other fields are not set by the user, nor used by the driver */ if (!access_ok(VERIFY_READ, up, sizeof(*up)) || - get_user(kp->index, &up->index)) + assign_in_user(&kp->index, &up->index)) return -EFAULT; return 0; } -static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up) +static int put_v4l2_standard32(struct v4l2_standard __user *kp, + struct v4l2_standard32 __user *up) { if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || - put_user(kp->index, &up->index) || - put_user(kp->id, &up->id) || - copy_to_user(up->name, kp->name, sizeof(up->name)) || - copy_to_user(&up->frameperiod, &kp->frameperiod, - sizeof(kp->frameperiod)) || - put_user(kp->framelines, &up->framelines) || - copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved))) + assign_in_user(&up->index, &kp->index) || + assign_in_user(&up->id, &kp->id) || + copy_in_user(up->name, kp->name, sizeof(up->name)) || + copy_in_user(&up->frameperiod, &kp->frameperiod, + sizeof(up->frameperiod)) || + assign_in_user(&up->framelines, &kp->framelines) || + copy_in_user(up->reserved, kp->reserved, sizeof(up->reserved))) return -EFAULT; return 0; } @@ -318,11 +390,11 @@ struct v4l2_buffer32 { __u32 reserved; }; -static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32, +static int get_v4l2_plane32(struct v4l2_plane __user *up, + struct v4l2_plane32 __user *up32, enum v4l2_memory memory) { - void __user *up_pln; - compat_long_t p; + compat_ulong_t p; if (copy_in_user(up, up32, 2 * sizeof(__u32)) || copy_in_user(&up->data_offset, &up32->data_offset, @@ -337,10 +409,8 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ return -EFAULT; break; case V4L2_MEMORY_USERPTR: - if (get_user(p, &up32->m.userptr)) - return -EFAULT; - up_pln = compat_ptr(p); - if (put_user((unsigned long)up_pln, &up->m.userptr)) + if (get_user(p, &up32->m.userptr) || + put_user((unsigned long)compat_ptr(p), &up->m.userptr)) return -EFAULT; break; case V4L2_MEMORY_DMABUF: @@ -352,7 +422,8 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ return 0; } -static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32, +static int put_v4l2_plane32(struct v4l2_plane __user *up, + struct v4l2_plane32 __user *up32, enum v4l2_memory memory) { unsigned long p; @@ -376,8 +447,7 @@ static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ return -EFAULT; break; case V4L2_MEMORY_DMABUF: - if (copy_in_user(&up32->m.fd, &up->m.fd, - sizeof(up->m.fd))) + if (copy_in_user(&up32->m.fd, &up->m.fd, sizeof(up->m.fd))) return -EFAULT; break; } @@ -385,79 +455,121 @@ static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ return 0; } -static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up) +static int bufsize_v4l2_buffer(struct v4l2_buffer32 __user *up, u32 *size) +{ + u32 type; + u32 length; + + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || + get_user(type, &up->type) || + get_user(length, &up->length)) + return -EFAULT; + + if (V4L2_TYPE_IS_MULTIPLANAR(type)) { + if (length > VIDEO_MAX_PLANES) + return -EINVAL; + + /* + * We don't really care if userspace decides to kill itself + * by passing a very big length value + */ + *size = length * sizeof(struct v4l2_plane); + } else { + *size = 0; + } + return 0; +} + +static int get_v4l2_buffer32(struct v4l2_buffer __user *kp, + struct v4l2_buffer32 __user *up, + void __user *aux_buf, u32 aux_space) { + u32 type; + u32 length; + enum v4l2_memory memory; struct v4l2_plane32 __user *uplane32; struct v4l2_plane __user *uplane; compat_caddr_t p; int ret; if (!access_ok(VERIFY_READ, up, sizeof(*up)) || - get_user(kp->index, &up->index) || - get_user(kp->type, &up->type) || - get_user(kp->flags, &up->flags) || - get_user(kp->memory, &up->memory) || - get_user(kp->length, &up->length)) + assign_in_user(&kp->index, &up->index) || + get_user(type, &up->type) || + put_user(type, &kp->type) || + assign_in_user(&kp->flags, &up->flags) || + get_user(memory, &up->memory) || + put_user(memory, &kp->memory) || + get_user(length, &up->length) || + put_user(length, &kp->length)) return -EFAULT; - if (V4L2_TYPE_IS_OUTPUT(kp->type)) - if (get_user(kp->bytesused, &up->bytesused) || - get_user(kp->field, &up->field) || - get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - get_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec)) + if (V4L2_TYPE_IS_OUTPUT(type)) + if (assign_in_user(&kp->bytesused, &up->bytesused) || + assign_in_user(&kp->field, &up->field) || + assign_in_user(&kp->timestamp.tv_sec, + &up->timestamp.tv_sec) || + assign_in_user(&kp->timestamp.tv_usec, + &up->timestamp.tv_usec)) return -EFAULT; - if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) { - unsigned int num_planes; + if (V4L2_TYPE_IS_MULTIPLANAR(type)) { + u32 num_planes = length; - if (kp->length == 0) { - kp->m.planes = NULL; - /* num_planes == 0 is legal, e.g. when userspace doesn't - * need planes array on DQBUF*/ - return 0; - } else if (kp->length > VIDEO_MAX_PLANES) { - return -EINVAL; + if (num_planes == 0) { + /* + * num_planes == 0 is legal, e.g. when userspace doesn't + * need planes array on DQBUF + */ + return put_user(NULL, &kp->m.planes); } + if (num_planes > VIDEO_MAX_PLANES) + return -EINVAL; if (get_user(p, &up->m.planes)) return -EFAULT; uplane32 = compat_ptr(p); if (!access_ok(VERIFY_READ, uplane32, - kp->length * sizeof(*uplane32))) + num_planes * sizeof(*uplane32))) return -EFAULT; - /* We don't really care if userspace decides to kill itself - * by passing a very big num_planes value */ - uplane = compat_alloc_user_space(kp->length * sizeof(*uplane)); - kp->m.planes = (__force struct v4l2_plane *)uplane; + /* + * We don't really care if userspace decides to kill itself + * by passing a very big num_planes value + */ + if (aux_space < num_planes * sizeof(*uplane)) + return -EFAULT; - for (num_planes = 0; num_planes < kp->length; num_planes++) { - ret = get_v4l2_plane32(uplane, uplane32, kp->memory); + uplane = aux_buf; + if (put_user((__force struct v4l2_plane *)uplane, + &kp->m.planes)) + return -EFAULT; + + while (num_planes--) { + ret = get_v4l2_plane32(uplane, uplane32, memory); if (ret) return ret; - ++uplane; - ++uplane32; + uplane++; + uplane32++; } } else { - switch (kp->memory) { + switch (memory) { case V4L2_MEMORY_MMAP: case V4L2_MEMORY_OVERLAY: - if (get_user(kp->m.offset, &up->m.offset)) + if (assign_in_user(&kp->m.offset, &up->m.offset)) return -EFAULT; break; - case V4L2_MEMORY_USERPTR: - { - compat_long_t tmp; - - if (get_user(tmp, &up->m.userptr)) - return -EFAULT; + case V4L2_MEMORY_USERPTR: { + compat_ulong_t userptr; - kp->m.userptr = (unsigned long)compat_ptr(tmp); - } + if (get_user(userptr, &up->m.userptr) || + put_user((unsigned long)compat_ptr(userptr), + &kp->m.userptr)) + return -EFAULT; break; + } case V4L2_MEMORY_DMABUF: - if (get_user(kp->m.fd, &up->m.fd)) + if (assign_in_user(&kp->m.fd, &up->m.fd)) return -EFAULT; break; } @@ -466,62 +578,70 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user return 0; } -static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user *up) +static int put_v4l2_buffer32(struct v4l2_buffer __user *kp, + struct v4l2_buffer32 __user *up) { + u32 type; + u32 length; + enum v4l2_memory memory; struct v4l2_plane32 __user *uplane32; struct v4l2_plane __user *uplane; compat_caddr_t p; - int num_planes; int ret; if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || - put_user(kp->index, &up->index) || - put_user(kp->type, &up->type) || - put_user(kp->flags, &up->flags) || - put_user(kp->memory, &up->memory)) + assign_in_user(&up->index, &kp->index) || + get_user(type, &kp->type) || + put_user(type, &up->type) || + assign_in_user(&up->flags, &kp->flags) || + get_user(memory, &kp->memory) || + put_user(memory, &up->memory)) return -EFAULT; - if (put_user(kp->bytesused, &up->bytesused) || - put_user(kp->field, &up->field) || - put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) || - copy_to_user(&up->timecode, &kp->timecode, sizeof(kp->timecode)) || - put_user(kp->sequence, &up->sequence) || - put_user(kp->reserved2, &up->reserved2) || - put_user(kp->reserved, &up->reserved) || - put_user(kp->length, &up->length)) + if (assign_in_user(&up->bytesused, &kp->bytesused) || + assign_in_user(&up->field, &kp->field) || + assign_in_user(&up->timestamp.tv_sec, &kp->timestamp.tv_sec) || + assign_in_user(&up->timestamp.tv_usec, &kp->timestamp.tv_usec) || + copy_in_user(&up->timecode, &kp->timecode, sizeof(kp->timecode)) || + assign_in_user(&up->sequence, &kp->sequence) || + assign_in_user(&up->reserved2, &kp->reserved2) || + assign_in_user(&up->reserved, &kp->reserved) || + get_user(length, &kp->length) || + put_user(length, &up->length)) return -EFAULT; - if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) { - num_planes = kp->length; + if (V4L2_TYPE_IS_MULTIPLANAR(type)) { + u32 num_planes = length; + if (num_planes == 0) return 0; - uplane = (__force struct v4l2_plane __user *)kp->m.planes; + if (get_user(uplane, ((__force struct v4l2_plane __user **)&kp->m.planes))) + return -EFAULT; if (get_user(p, &up->m.planes)) return -EFAULT; uplane32 = compat_ptr(p); - while (--num_planes >= 0) { - ret = put_v4l2_plane32(uplane, uplane32, kp->memory); + while (num_planes--) { + ret = put_v4l2_plane32(uplane, uplane32, memory); if (ret) return ret; ++uplane; ++uplane32; } } else { - switch (kp->memory) { + switch (memory) { case V4L2_MEMORY_MMAP: case V4L2_MEMORY_OVERLAY: - if (put_user(kp->m.offset, &up->m.offset)) + if (assign_in_user(&up->m.offset, &kp->m.offset)) return -EFAULT; break; case V4L2_MEMORY_USERPTR: - if (put_user(kp->m.userptr, &up->m.userptr)) + if (assign_in_user(&up->m.userptr, &kp->m.userptr)) return -EFAULT; break; case V4L2_MEMORY_DMABUF: - if (put_user(kp->m.fd, &up->m.fd)) + if (assign_in_user(&up->m.fd, &kp->m.fd)) return -EFAULT; break; } @@ -546,29 +666,32 @@ struct v4l2_framebuffer32 { } fmt; }; -static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up) +static int get_v4l2_framebuffer32(struct v4l2_framebuffer __user *kp, + struct v4l2_framebuffer32 __user *up) { - u32 tmp; + compat_caddr_t tmp; if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(tmp, &up->base) || - get_user(kp->capability, &up->capability) || - get_user(kp->flags, &up->flags) || - copy_from_user(&kp->fmt, &up->fmt, sizeof(up->fmt))) + put_user((__force void *)compat_ptr(tmp), &kp->base) || + assign_in_user(&kp->capability, &up->capability) || + assign_in_user(&kp->flags, &up->flags) || + copy_in_user(&kp->fmt, &up->fmt, sizeof(kp->fmt))) return -EFAULT; - kp->base = (__force void *)compat_ptr(tmp); return 0; } -static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_framebuffer32 __user *up) +static int put_v4l2_framebuffer32(struct v4l2_framebuffer __user *kp, + struct v4l2_framebuffer32 __user *up) { - u32 tmp = (u32)((unsigned long)kp->base); + void *base; if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || - put_user(tmp, &up->base) || - put_user(kp->capability, &up->capability) || - put_user(kp->flags, &up->flags) || - copy_to_user(&up->fmt, &kp->fmt, sizeof(up->fmt))) + get_user(base, &kp->base) || + put_user(ptr_to_compat(base), &up->base) || + assign_in_user(&up->capability, &kp->capability) || + assign_in_user(&up->flags, &kp->flags) || + copy_in_user(&up->fmt, &kp->fmt, sizeof(kp->fmt))) return -EFAULT; return 0; } @@ -585,18 +708,22 @@ struct v4l2_input32 { __u32 reserved[3]; }; -/* The 64-bit v4l2_input struct has extra padding at the end of the struct. - Otherwise it is identical to the 32-bit version. */ -static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up) +/* + * The 64-bit v4l2_input struct has extra padding at the end of the struct. + * Otherwise it is identical to the 32-bit version. + */ +static inline int get_v4l2_input32(struct v4l2_input __user *kp, + struct v4l2_input32 __user *up) { - if (copy_from_user(kp, up, sizeof(*up))) + if (copy_in_user(kp, up, sizeof(*up))) return -EFAULT; return 0; } -static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up) +static inline int put_v4l2_input32(struct v4l2_input __user *kp, + struct v4l2_input32 __user *up) { - if (copy_to_user(up, kp, sizeof(*up))) + if (copy_in_user(up, kp, sizeof(*up))) return -EFAULT; return 0; } @@ -650,41 +777,64 @@ static inline bool ctrl_is_pointer(struct file *file, u32 id) (qec.flags & V4L2_CTRL_FLAG_HAS_PAYLOAD); } +static int bufsize_v4l2_ext_controls(struct v4l2_ext_controls32 __user *up, + u32 *size) +{ + u32 count; + + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || + get_user(count, &up->count)) + return -EFAULT; + if (count > V4L2_CID_MAX_CTRLS) + return -EINVAL; + *size = count * sizeof(struct v4l2_ext_control); + return 0; +} + static int get_v4l2_ext_controls32(struct file *file, - struct v4l2_ext_controls *kp, - struct v4l2_ext_controls32 __user *up) + struct v4l2_ext_controls __user *kp, + struct v4l2_ext_controls32 __user *up, + void __user *aux_buf, u32 aux_space) { struct v4l2_ext_control32 __user *ucontrols; struct v4l2_ext_control __user *kcontrols; - unsigned int n; + u32 count; + u32 n; compat_caddr_t p; if (!access_ok(VERIFY_READ, up, sizeof(*up)) || - get_user(kp->which, &up->which) || - get_user(kp->count, &up->count) || - get_user(kp->error_idx, &up->error_idx) || - copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved))) + assign_in_user(&kp->which, &up->which) || + get_user(count, &up->count) || + put_user(count, &kp->count) || + assign_in_user(&kp->error_idx, &up->error_idx) || + copy_in_user(kp->reserved, up->reserved, sizeof(kp->reserved))) return -EFAULT; - if (kp->count == 0) { - kp->controls = NULL; - return 0; - } else if (kp->count > V4L2_CID_MAX_CTRLS) { + + if (count == 0) + return put_user(NULL, &kp->controls); + if (count > V4L2_CID_MAX_CTRLS) return -EINVAL; - } if (get_user(p, &up->controls)) return -EFAULT; ucontrols = compat_ptr(p); - if (!access_ok(VERIFY_READ, ucontrols, kp->count * sizeof(*ucontrols))) + if (!access_ok(VERIFY_READ, ucontrols, count * sizeof(*ucontrols))) return -EFAULT; - kcontrols = compat_alloc_user_space(kp->count * sizeof(*kcontrols)); - kp->controls = (__force struct v4l2_ext_control *)kcontrols; - for (n = 0; n < kp->count; n++) { + if (aux_space < count * sizeof(*kcontrols)) + return -EFAULT; + kcontrols = aux_buf; + if (put_user((__force struct v4l2_ext_control *)kcontrols, + &kp->controls)) + return -EFAULT; + + for (n = 0; n < count; n++) { u32 id; if (copy_in_user(kcontrols, ucontrols, sizeof(*ucontrols))) return -EFAULT; + if (get_user(id, &kcontrols->id)) return -EFAULT; + if (ctrl_is_pointer(file, id)) { void __user *s; @@ -701,43 +851,54 @@ static int get_v4l2_ext_controls32(struct file *file, } static int put_v4l2_ext_controls32(struct file *file, - struct v4l2_ext_controls *kp, + struct v4l2_ext_controls __user *kp, struct v4l2_ext_controls32 __user *up) { struct v4l2_ext_control32 __user *ucontrols; - struct v4l2_ext_control __user *kcontrols = - (__force struct v4l2_ext_control __user *)kp->controls; - int n = kp->count; + struct v4l2_ext_control __user *kcontrols; + u32 count; + u32 n; compat_caddr_t p; if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || - put_user(kp->which, &up->which) || - put_user(kp->count, &up->count) || - put_user(kp->error_idx, &up->error_idx) || - copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) + assign_in_user(&up->which, &kp->which) || + get_user(count, &kp->count) || + put_user(count, &up->count) || + assign_in_user(&up->error_idx, &kp->error_idx) || + copy_in_user(up->reserved, kp->reserved, sizeof(up->reserved)) || + get_user(kcontrols, &kp->controls)) return -EFAULT; - if (!kp->count) - return 0; + if (!count) + return 0; if (get_user(p, &up->controls)) return -EFAULT; ucontrols = compat_ptr(p); - if (!access_ok(VERIFY_WRITE, ucontrols, n * sizeof(*ucontrols))) + if (!access_ok(VERIFY_WRITE, ucontrols, count * sizeof(*ucontrols))) return -EFAULT; - while (--n >= 0) { - unsigned size = sizeof(*ucontrols); + for (n = 0; n < count; n++) { + unsigned int size = sizeof(*ucontrols); u32 id; - if (get_user(id, &kcontrols->id)) + if (get_user(id, &kcontrols->id) || + put_user(id, &ucontrols->id) || + assign_in_user(&ucontrols->size, &kcontrols->size) || + copy_in_user(&ucontrols->reserved2, &kcontrols->reserved2, + sizeof(ucontrols->reserved2))) return -EFAULT; - /* Do not modify the pointer when copying a pointer control. - The contents of the pointer was changed, not the pointer - itself. */ + + /* + * Do not modify the pointer when copying a pointer control. + * The contents of the pointer was changed, not the pointer + * itself. + */ if (ctrl_is_pointer(file, id)) size -= sizeof(ucontrols->value64); + if (copy_in_user(ucontrols, kcontrols, size)) return -EFAULT; + ucontrols++; kcontrols++; } @@ -757,17 +918,18 @@ struct v4l2_event32 { __u32 reserved[8]; }; -static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *up) +static int put_v4l2_event32(struct v4l2_event __user *kp, + struct v4l2_event32 __user *up) { if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || - put_user(kp->type, &up->type) || - copy_to_user(&up->u, &kp->u, sizeof(kp->u)) || - put_user(kp->pending, &up->pending) || - put_user(kp->sequence, &up->sequence) || - put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - put_user(kp->timestamp.tv_nsec, &up->timestamp.tv_nsec) || - put_user(kp->id, &up->id) || - copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved))) + assign_in_user(&up->type, &kp->type) || + copy_in_user(&up->u, &kp->u, sizeof(kp->u)) || + assign_in_user(&up->pending, &kp->pending) || + assign_in_user(&up->sequence, &kp->sequence) || + assign_in_user(&up->timestamp.tv_sec, &kp->timestamp.tv_sec) || + assign_in_user(&up->timestamp.tv_nsec, &kp->timestamp.tv_nsec) || + assign_in_user(&up->id, &kp->id) || + copy_in_user(up->reserved, kp->reserved, sizeof(up->reserved))) return -EFAULT; return 0; } @@ -780,31 +942,34 @@ struct v4l2_edid32 { compat_caddr_t edid; }; -static int get_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) +static int get_v4l2_edid32(struct v4l2_edid __user *kp, + struct v4l2_edid32 __user *up) { - u32 tmp; + compat_uptr_t tmp; if (!access_ok(VERIFY_READ, up, sizeof(*up)) || - get_user(kp->pad, &up->pad) || - get_user(kp->start_block, &up->start_block) || - get_user(kp->blocks, &up->blocks) || + assign_in_user(&kp->pad, &up->pad) || + assign_in_user(&kp->start_block, &up->start_block) || + assign_in_user(&kp->blocks, &up->blocks) || get_user(tmp, &up->edid) || - copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved))) + put_user(compat_ptr(tmp), &kp->edid) || + copy_in_user(kp->reserved, up->reserved, sizeof(kp->reserved))) return -EFAULT; - kp->edid = (__force u8 *)compat_ptr(tmp); return 0; } -static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) +static int put_v4l2_edid32(struct v4l2_edid __user *kp, + struct v4l2_edid32 __user *up) { - u32 tmp = (u32)((unsigned long)kp->edid); + void *edid; if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || - put_user(kp->pad, &up->pad) || - put_user(kp->start_block, &up->start_block) || - put_user(kp->blocks, &up->blocks) || - put_user(tmp, &up->edid) || - copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) + assign_in_user(&up->pad, &kp->pad) || + assign_in_user(&up->start_block, &kp->start_block) || + assign_in_user(&up->blocks, &kp->blocks) || + get_user(edid, &kp->edid) || + put_user(ptr_to_compat(edid), &up->edid) || + copy_in_user(up->reserved, kp->reserved, sizeof(up->reserved))) return -EFAULT; return 0; } @@ -837,22 +1002,23 @@ static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) #define VIDIOC_G_OUTPUT32 _IOR ('V', 46, s32) #define VIDIOC_S_OUTPUT32 _IOWR('V', 47, s32) +static int alloc_userspace(unsigned int size, u32 aux_space, + void __user **up_native) +{ + *up_native = compat_alloc_user_space(size + aux_space); + if (!*up_native) + return -ENOMEM; + if (clear_user(*up_native, size)) + return -EFAULT; + return 0; +} + static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - union { - struct v4l2_format v2f; - struct v4l2_buffer v2b; - struct v4l2_framebuffer v2fb; - struct v4l2_input v2i; - struct v4l2_standard v2s; - struct v4l2_ext_controls v2ecs; - struct v4l2_event v2ev; - struct v4l2_create_buffers v2crt; - struct v4l2_edid v2edid; - unsigned long vx; - int vi; - } karg; void __user *up = compat_ptr(arg); + void __user *up_native = NULL; + void __user *aux_buf; + u32 aux_space; int compatible_arg = 1; long err = 0; @@ -891,30 +1057,53 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar case VIDIOC_STREAMOFF: case VIDIOC_S_INPUT: case VIDIOC_S_OUTPUT: - err = get_user(karg.vi, (s32 __user *)up); + err = alloc_userspace(sizeof(unsigned int), 0, &up_native); + if (!err && assign_in_user((unsigned int __user *)up_native, + (compat_uint_t __user *)up)) + err = -EFAULT; compatible_arg = 0; break; case VIDIOC_G_INPUT: case VIDIOC_G_OUTPUT: + err = alloc_userspace(sizeof(unsigned int), 0, + &up_native); compatible_arg = 0; break; case VIDIOC_G_EDID: case VIDIOC_S_EDID: - err = get_v4l2_edid32(&karg.v2edid, up); + err = alloc_userspace(sizeof(struct v4l2_edid), 0, &up_native); + if (!err) + err = get_v4l2_edid32(up_native, up); compatible_arg = 0; break; case VIDIOC_G_FMT: case VIDIOC_S_FMT: case VIDIOC_TRY_FMT: - err = get_v4l2_format32(&karg.v2f, up); + err = bufsize_v4l2_format(up, &aux_space); + if (!err) + err = alloc_userspace(sizeof(struct v4l2_format), + aux_space, &up_native); + if (!err) { + aux_buf = up_native + sizeof(struct v4l2_format); + err = get_v4l2_format32(up_native, up, + aux_buf, aux_space); + } compatible_arg = 0; break; case VIDIOC_CREATE_BUFS: - err = get_v4l2_create32(&karg.v2crt, up); + err = bufsize_v4l2_create(up, &aux_space); + if (!err) + err = alloc_userspace(sizeof(struct v4l2_create_buffers), + aux_space, &up_native); + if (!err) { + aux_buf = up_native + sizeof(struct v4l2_create_buffers); + err = get_v4l2_create32(up_native, up, + aux_buf, aux_space); + } compatible_arg = 0; break; @@ -922,36 +1111,63 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar case VIDIOC_QUERYBUF: case VIDIOC_QBUF: case VIDIOC_DQBUF: - err = get_v4l2_buffer32(&karg.v2b, up); + err = bufsize_v4l2_buffer(up, &aux_space); + if (!err) + err = alloc_userspace(sizeof(struct v4l2_buffer), + aux_space, &up_native); + if (!err) { + aux_buf = up_native + sizeof(struct v4l2_buffer); + err = get_v4l2_buffer32(up_native, up, + aux_buf, aux_space); + } compatible_arg = 0; break; case VIDIOC_S_FBUF: - err = get_v4l2_framebuffer32(&karg.v2fb, up); + err = alloc_userspace(sizeof(struct v4l2_framebuffer), 0, + &up_native); + if (!err) + err = get_v4l2_framebuffer32(up_native, up); compatible_arg = 0; break; case VIDIOC_G_FBUF: + err = alloc_userspace(sizeof(struct v4l2_framebuffer), 0, + &up_native); compatible_arg = 0; break; case VIDIOC_ENUMSTD: - err = get_v4l2_standard32(&karg.v2s, up); + err = alloc_userspace(sizeof(struct v4l2_standard), 0, + &up_native); + if (!err) + err = get_v4l2_standard32(up_native, up); compatible_arg = 0; break; case VIDIOC_ENUMINPUT: - err = get_v4l2_input32(&karg.v2i, up); + err = alloc_userspace(sizeof(struct v4l2_input), 0, &up_native); + if (!err) + err = get_v4l2_input32(up_native, up); compatible_arg = 0; break; case VIDIOC_G_EXT_CTRLS: case VIDIOC_S_EXT_CTRLS: case VIDIOC_TRY_EXT_CTRLS: - err = get_v4l2_ext_controls32(file, &karg.v2ecs, up); + err = bufsize_v4l2_ext_controls(up, &aux_space); + if (!err) + err = alloc_userspace(sizeof(struct v4l2_ext_controls), + aux_space, &up_native); + if (!err) { + aux_buf = up_native + sizeof(struct v4l2_ext_controls); + err = get_v4l2_ext_controls32(file, up_native, up, + aux_buf, aux_space); + } compatible_arg = 0; break; case VIDIOC_DQEVENT: + err = alloc_userspace(sizeof(struct v4l2_event), 0, &up_native); compatible_arg = 0; break; } @@ -960,29 +1176,26 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar if (compatible_arg) err = native_ioctl(file, cmd, (unsigned long)up); - else { - mm_segment_t old_fs = get_fs(); - - set_fs(KERNEL_DS); - err = native_ioctl(file, cmd, (unsigned long)&karg); - set_fs(old_fs); - } + else + err = native_ioctl(file, cmd, (unsigned long)up_native); if (err == -ENOTTY) return err; - /* Special case: even after an error we need to put the - results back for these ioctls since the error_idx will - contain information on which control failed. */ + /* + * Special case: even after an error we need to put the + * results back for these ioctls since the error_idx will + * contain information on which control failed. + */ switch (cmd) { case VIDIOC_G_EXT_CTRLS: case VIDIOC_S_EXT_CTRLS: case VIDIOC_TRY_EXT_CTRLS: - if (put_v4l2_ext_controls32(file, &karg.v2ecs, up)) + if (put_v4l2_ext_controls32(file, up_native, up)) err = -EFAULT; break; case VIDIOC_S_EDID: - if (put_v4l2_edid32(&karg.v2edid, up)) + if (put_v4l2_edid32(up_native, up)) err = -EFAULT; break; } @@ -994,44 +1207,46 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar case VIDIOC_S_OUTPUT: case VIDIOC_G_INPUT: case VIDIOC_G_OUTPUT: - err = put_user(((s32)karg.vi), (s32 __user *)up); + if (assign_in_user((compat_uint_t __user *)up, + ((unsigned int __user *)up_native))) + err = -EFAULT; break; case VIDIOC_G_FBUF: - err = put_v4l2_framebuffer32(&karg.v2fb, up); + err = put_v4l2_framebuffer32(up_native, up); break; case VIDIOC_DQEVENT: - err = put_v4l2_event32(&karg.v2ev, up); + err = put_v4l2_event32(up_native, up); break; case VIDIOC_G_EDID: - err = put_v4l2_edid32(&karg.v2edid, up); + err = put_v4l2_edid32(up_native, up); break; case VIDIOC_G_FMT: case VIDIOC_S_FMT: case VIDIOC_TRY_FMT: - err = put_v4l2_format32(&karg.v2f, up); + err = put_v4l2_format32(up_native, up); break; case VIDIOC_CREATE_BUFS: - err = put_v4l2_create32(&karg.v2crt, up); + err = put_v4l2_create32(up_native, up); break; case VIDIOC_PREPARE_BUF: case VIDIOC_QUERYBUF: case VIDIOC_QBUF: case VIDIOC_DQBUF: - err = put_v4l2_buffer32(&karg.v2b, up); + err = put_v4l2_buffer32(up_native, up); break; case VIDIOC_ENUMSTD: - err = put_v4l2_standard32(&karg.v2s, up); + err = put_v4l2_standard32(up_native, up); break; case VIDIOC_ENUMINPUT: - err = put_v4l2_input32(&karg.v2i, up); + err = put_v4l2_input32(up_native, up); break; } return err; -- 2.15.1

7 years, 7 months

2
2
0 0

[Linux-stable-mirror] [PATCHv2 03/13] v4l2-ioctl.c: don't copy back the result for -ENOTTY

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> If the ioctl returned -ENOTTY, then don't bother copying back the result as there is no point. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-ioctl.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index c7f6b65d3ad7..260288ca4f55 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -2900,8 +2900,11 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, /* Handles IOCTL */ err = func(file, cmd, parg); - if (err == -ENOIOCTLCMD) + if (err == -ENOTTY || err == -ENOIOCTLCMD) { err = -ENOTTY; + goto out; + } + if (err == 0) { if (cmd == VIDIOC_DQBUF) trace_v4l2_dqbuf(video_devdata(file)->minor, parg); -- 2.15.1

7 years, 7 months

2
1
0 0

[Linux-stable-mirror] [PATCHv2 11/13] v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> There is nothing wrong with using an unknown buffer type. So stop spamming the kernel log whenever this happens. The kernel will just return -EINVAL to signal this. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 0df941ca4d90..7ee3777cbe9c 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -179,8 +179,6 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us return copy_from_user(&kp->fmt.meta, &up->fmt.meta, sizeof(kp->fmt.meta)) ? -EFAULT : 0; default: - pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", - kp->type); return -EINVAL; } } @@ -233,8 +231,6 @@ static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us return copy_to_user(&up->fmt.meta, &kp->fmt.meta, sizeof(kp->fmt.meta)) ? -EFAULT : 0; default: - pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", - kp->type); return -EINVAL; } } -- 2.15.1

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [PATCHv2 08/13] v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> The struct v4l2_plane32 should set m.userptr as well. The same happens in v4l2_buffer32 and v4l2-compliance tests for this. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 47 ++++++++++++++++----------- 1 file changed, 28 insertions(+), 19 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 6c70705a48bc..7dff9b4aeb19 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -310,19 +310,24 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ sizeof(up->data_offset))) return -EFAULT; - if (memory == V4L2_MEMORY_USERPTR) { + switch (memory) { + case V4L2_MEMORY_MMAP: + case V4L2_MEMORY_OVERLAY: + if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset, + sizeof(up32->m.mem_offset))) + return -EFAULT; + break; + case V4L2_MEMORY_USERPTR: if (get_user(p, &up32->m.userptr)) return -EFAULT; up_pln = compat_ptr(p); if (put_user((unsigned long)up_pln, &up->m.userptr)) return -EFAULT; - } else if (memory == V4L2_MEMORY_DMABUF) { + break; + case V4L2_MEMORY_DMABUF: if (copy_in_user(&up->m.fd, &up32->m.fd, sizeof(up32->m.fd))) return -EFAULT; - } else { - if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset, - sizeof(up32->m.mem_offset))) - return -EFAULT; + break; } return 0; @@ -331,22 +336,32 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32, enum v4l2_memory memory) { + unsigned long p; + if (copy_in_user(up32, up, 2 * sizeof(__u32)) || copy_in_user(&up32->data_offset, &up->data_offset, sizeof(up->data_offset))) return -EFAULT; - /* For MMAP, driver might've set up the offset, so copy it back. - * USERPTR stays the same (was userspace-provided), so no copying. */ - if (memory == V4L2_MEMORY_MMAP) + switch (memory) { + case V4L2_MEMORY_MMAP: + case V4L2_MEMORY_OVERLAY: if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset, sizeof(up->m.mem_offset))) return -EFAULT; - /* For DMABUF, driver might've set up the fd, so copy it back. */ - if (memory == V4L2_MEMORY_DMABUF) + break; + case V4L2_MEMORY_USERPTR: + if (get_user(p, &up->m.userptr) || + put_user((compat_ulong_t)ptr_to_compat((__force void *)p), + &up32->m.userptr)) + return -EFAULT; + break; + case V4L2_MEMORY_DMABUF: if (copy_in_user(&up32->m.fd, &up->m.fd, sizeof(up->m.fd))) return -EFAULT; + break; + } return 0; } @@ -408,6 +423,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user } else { switch (kp->memory) { case V4L2_MEMORY_MMAP: + case V4L2_MEMORY_OVERLAY: if (get_user(kp->m.offset, &up->m.offset)) return -EFAULT; break; @@ -421,10 +437,6 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user kp->m.userptr = (unsigned long)compat_ptr(tmp); } break; - case V4L2_MEMORY_OVERLAY: - if (get_user(kp->m.offset, &up->m.offset)) - return -EFAULT; - break; case V4L2_MEMORY_DMABUF: if (get_user(kp->m.fd, &up->m.fd)) return -EFAULT; @@ -481,6 +493,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user } else { switch (kp->memory) { case V4L2_MEMORY_MMAP: + case V4L2_MEMORY_OVERLAY: if (put_user(kp->m.offset, &up->m.offset)) return -EFAULT; break; @@ -488,10 +501,6 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user if (put_user(kp->m.userptr, &up->m.userptr)) return -EFAULT; break; - case V4L2_MEMORY_OVERLAY: - if (put_user(kp->m.offset, &up->m.offset)) - return -EFAULT; - break; case V4L2_MEMORY_DMABUF: if (put_user(kp->m.fd, &up->m.fd)) return -EFAULT; -- 2.15.1

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [PATCHv2 07/13] v4l2-compat-ioctl32.c: avoid sizeof(type)

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> Instead of doing sizeof(struct foo) use sizeof(*up). There even were cases where 4 * sizeof(__u32) was used instead of sizeof(kp->reserved), which is very dangerous when the size of the reserved array changes. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 79 ++++++++++++--------------- 1 file changed, 36 insertions(+), 43 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index c7e9d29d0e33..6c70705a48bc 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -48,7 +48,7 @@ struct v4l2_window32 { static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) { - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || copy_from_user(&kp->w, &up->w, sizeof(up->w)) || get_user(kp->field, &up->field) || get_user(kp->chromakey, &up->chromakey) || @@ -66,7 +66,7 @@ static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user if (get_user(p, &up->clips)) return -EFAULT; uclips = compat_ptr(p); - kclips = compat_alloc_user_space(n * sizeof(struct v4l2_clip)); + kclips = compat_alloc_user_space(n * sizeof(*kclips)); kp->clips = kclips; while (--n >= 0) { if (copy_in_user(&kclips->c, &uclips->c, sizeof(uclips->c))) @@ -164,14 +164,14 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us static int get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) { - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_format32))) + if (!access_ok(VERIFY_READ, up, sizeof(*up))) return -EFAULT; return __get_v4l2_format32(kp, up); } static int get_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up) { - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_create_buffers32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || copy_from_user(kp, up, offsetof(struct v4l2_create_buffers32, format))) return -EFAULT; return __get_v4l2_format32(&kp->format, &up->format); @@ -218,14 +218,14 @@ static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us static int put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __user *up) { - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_format32))) + if (!access_ok(VERIFY_WRITE, up, sizeof(*up))) return -EFAULT; return __put_v4l2_format32(kp, up); } static int put_v4l2_create32(struct v4l2_create_buffers *kp, struct v4l2_create_buffers32 __user *up) { - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_create_buffers32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, format)) || copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved))) return -EFAULT; @@ -244,7 +244,7 @@ struct v4l2_standard32 { static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up) { /* other fields are not set by the user, nor used by the driver */ - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(kp->index, &up->index)) return -EFAULT; return 0; @@ -252,14 +252,14 @@ static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up) { - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(kp->index, &up->index) || put_user(kp->id, &up->id) || - copy_to_user(up->name, kp->name, 24) || + copy_to_user(up->name, kp->name, sizeof(up->name)) || copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) || put_user(kp->framelines, &up->framelines) || - copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32))) + copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved))) return -EFAULT; return 0; } @@ -307,7 +307,7 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ if (copy_in_user(up, up32, 2 * sizeof(__u32)) || copy_in_user(&up->data_offset, &up32->data_offset, - sizeof(__u32))) + sizeof(up->data_offset))) return -EFAULT; if (memory == V4L2_MEMORY_USERPTR) { @@ -317,11 +317,11 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ if (put_user((unsigned long)up_pln, &up->m.userptr)) return -EFAULT; } else if (memory == V4L2_MEMORY_DMABUF) { - if (copy_in_user(&up->m.fd, &up32->m.fd, sizeof(int))) + if (copy_in_user(&up->m.fd, &up32->m.fd, sizeof(up32->m.fd))) return -EFAULT; } else { if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset, - sizeof(__u32))) + sizeof(up32->m.mem_offset))) return -EFAULT; } @@ -333,19 +333,19 @@ static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ { if (copy_in_user(up32, up, 2 * sizeof(__u32)) || copy_in_user(&up32->data_offset, &up->data_offset, - sizeof(__u32))) + sizeof(up->data_offset))) return -EFAULT; /* For MMAP, driver might've set up the offset, so copy it back. * USERPTR stays the same (was userspace-provided), so no copying. */ if (memory == V4L2_MEMORY_MMAP) if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset, - sizeof(__u32))) + sizeof(up->m.mem_offset))) return -EFAULT; /* For DMABUF, driver might've set up the fd, so copy it back. */ if (memory == V4L2_MEMORY_DMABUF) if (copy_in_user(&up32->m.fd, &up->m.fd, - sizeof(int))) + sizeof(up->m.fd))) return -EFAULT; return 0; @@ -358,7 +358,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user compat_caddr_t p; int ret; - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(kp->index, &up->index) || get_user(kp->type, &up->type) || get_user(kp->flags, &up->flags) || @@ -370,8 +370,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user if (get_user(kp->bytesused, &up->bytesused) || get_user(kp->field, &up->field) || get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - get_user(kp->timestamp.tv_usec, - &up->timestamp.tv_usec)) + get_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec)) return -EFAULT; if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) { @@ -391,13 +390,12 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user uplane32 = compat_ptr(p); if (!access_ok(VERIFY_READ, uplane32, - kp->length * sizeof(struct v4l2_plane32))) + kp->length * sizeof(*uplane32))) return -EFAULT; /* We don't really care if userspace decides to kill itself * by passing a very big num_planes value */ - uplane = compat_alloc_user_space(kp->length * - sizeof(struct v4l2_plane)); + uplane = compat_alloc_user_space(kp->length * sizeof(*uplane)); kp->m.planes = (__force struct v4l2_plane *)uplane; for (num_planes = 0; num_planes < kp->length; num_planes++) { @@ -445,7 +443,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user int num_planes; int ret; - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(kp->index, &up->index) || put_user(kp->type, &up->type) || put_user(kp->flags, &up->flags) || @@ -456,8 +454,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user put_user(kp->field, &up->field) || put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) || - copy_to_user(&up->timecode, &kp->timecode, - sizeof(struct v4l2_timecode)) || + copy_to_user(&up->timecode, &kp->timecode, sizeof(kp->timecode)) || put_user(kp->sequence, &up->sequence) || put_user(kp->reserved2, &up->reserved2) || put_user(kp->reserved, &up->reserved) || @@ -525,7 +522,7 @@ static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame { u32 tmp; - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(tmp, &up->base) || get_user(kp->capability, &up->capability) || get_user(kp->flags, &up->flags) || @@ -539,7 +536,7 @@ static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame { u32 tmp = (u32)((unsigned long)kp->base); - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(tmp, &up->base) || put_user(kp->capability, &up->capability) || put_user(kp->flags, &up->flags) || @@ -564,14 +561,14 @@ struct v4l2_input32 { Otherwise it is identical to the 32-bit version. */ static inline int get_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up) { - if (copy_from_user(kp, up, sizeof(struct v4l2_input32))) + if (copy_from_user(kp, up, sizeof(*up))) return -EFAULT; return 0; } static inline int put_v4l2_input32(struct v4l2_input *kp, struct v4l2_input32 __user *up) { - if (copy_to_user(up, kp, sizeof(struct v4l2_input32))) + if (copy_to_user(up, kp, sizeof(*up))) return -EFAULT; return 0; } @@ -619,12 +616,11 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext unsigned int n; compat_caddr_t p; - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(kp->which, &up->which) || get_user(kp->count, &up->count) || get_user(kp->error_idx, &up->error_idx) || - copy_from_user(kp->reserved, up->reserved, - sizeof(kp->reserved))) + copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved))) return -EFAULT; if (kp->count == 0) { kp->controls = NULL; @@ -635,11 +631,9 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext if (get_user(p, &up->controls)) return -EFAULT; ucontrols = compat_ptr(p); - if (!access_ok(VERIFY_READ, ucontrols, - kp->count * sizeof(struct v4l2_ext_control32))) + if (!access_ok(VERIFY_READ, ucontrols, kp->count * sizeof(*ucontrols))) return -EFAULT; - kcontrols = compat_alloc_user_space(kp->count * - sizeof(struct v4l2_ext_control)); + kcontrols = compat_alloc_user_space(kp->count * sizeof(*kcontrols)); kp->controls = (__force struct v4l2_ext_control *)kcontrols; for (n = 0; n < kp->count; n++) { u32 id; @@ -671,7 +665,7 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext int n = kp->count; compat_caddr_t p; - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(kp->which, &up->which) || put_user(kp->count, &up->count) || put_user(kp->error_idx, &up->error_idx) || @@ -683,8 +677,7 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext if (get_user(p, &up->controls)) return -EFAULT; ucontrols = compat_ptr(p); - if (!access_ok(VERIFY_WRITE, ucontrols, - n * sizeof(struct v4l2_ext_control32))) + if (!access_ok(VERIFY_WRITE, ucontrols, n * sizeof(*ucontrols))) return -EFAULT; while (--n >= 0) { @@ -721,7 +714,7 @@ struct v4l2_event32 { static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *up) { - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_event32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(kp->type, &up->type) || copy_to_user(&up->u, &kp->u, sizeof(kp->u)) || put_user(kp->pending, &up->pending) || @@ -729,7 +722,7 @@ static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *u put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || put_user(kp->timestamp.tv_nsec, &up->timestamp.tv_nsec) || put_user(kp->id, &up->id) || - copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32))) + copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved))) return -EFAULT; return 0; } @@ -746,7 +739,7 @@ static int get_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) { u32 tmp; - if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_edid32)) || + if (!access_ok(VERIFY_READ, up, sizeof(*up)) || get_user(kp->pad, &up->pad) || get_user(kp->start_block, &up->start_block) || get_user(kp->blocks, &up->blocks) || @@ -761,7 +754,7 @@ static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) { u32 tmp = (u32)((unsigned long)kp->edid); - if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_edid32)) || + if (!access_ok(VERIFY_WRITE, up, sizeof(*up)) || put_user(kp->pad, &up->pad) || put_user(kp->start_block, &up->start_block) || put_user(kp->blocks, &up->blocks) || -- 2.15.1

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [PATCHv2 06/13] v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> These helper functions do not really help. Move the code to the __get/put_v4l2_format32 functions. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 124 +++++--------------------- 1 file changed, 24 insertions(+), 100 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 83066b21b0b2..c7e9d29d0e33 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -92,92 +92,6 @@ static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user return 0; } -static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format))) - return -EFAULT; - return 0; -} - -static inline int get_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp, - struct v4l2_pix_format_mplane __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format_mplane))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pix_format __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp, - struct v4l2_pix_format_mplane __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format_mplane))) - return -EFAULT; - return 0; -} - -static inline int get_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_vbi_format))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_vbi_format(struct v4l2_vbi_format *kp, struct v4l2_vbi_format __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_vbi_format))) - return -EFAULT; - return 0; -} - -static inline int get_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_sliced_vbi_format))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_sliced_vbi_format(struct v4l2_sliced_vbi_format *kp, struct v4l2_sliced_vbi_format __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_sliced_vbi_format))) - return -EFAULT; - return 0; -} - -static inline int get_v4l2_sdr_format(struct v4l2_sdr_format *kp, struct v4l2_sdr_format __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_sdr_format))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_sdr_format(struct v4l2_sdr_format *kp, struct v4l2_sdr_format __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_sdr_format))) - return -EFAULT; - return 0; -} - -static inline int get_v4l2_meta_format(struct v4l2_meta_format *kp, struct v4l2_meta_format __user *up) -{ - if (copy_from_user(kp, up, sizeof(struct v4l2_meta_format))) - return -EFAULT; - return 0; -} - -static inline int put_v4l2_meta_format(struct v4l2_meta_format *kp, struct v4l2_meta_format __user *up) -{ - if (copy_to_user(up, kp, sizeof(struct v4l2_meta_format))) - return -EFAULT; - return 0; -} - struct v4l2_format32 { __u32 type; /* enum v4l2_buf_type */ union { @@ -217,25 +131,30 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us switch (kp->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: case V4L2_BUF_TYPE_VIDEO_OUTPUT: - return get_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix); + return copy_from_user(&kp->fmt.pix, &up->fmt.pix, + sizeof(kp->fmt.pix)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - return get_v4l2_pix_format_mplane(&kp->fmt.pix_mp, - &up->fmt.pix_mp); + return copy_from_user(&kp->fmt.pix_mp, &up->fmt.pix_mp, + sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: return get_v4l2_window32(&kp->fmt.win, &up->fmt.win); case V4L2_BUF_TYPE_VBI_CAPTURE: case V4L2_BUF_TYPE_VBI_OUTPUT: - return get_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi); + return copy_from_user(&kp->fmt.vbi, &up->fmt.vbi, + sizeof(kp->fmt.vbi)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - return get_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced); + return copy_from_user(&kp->fmt.sliced, &up->fmt.sliced, + sizeof(kp->fmt.sliced)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SDR_CAPTURE: case V4L2_BUF_TYPE_SDR_OUTPUT: - return get_v4l2_sdr_format(&kp->fmt.sdr, &up->fmt.sdr); + return copy_from_user(&kp->fmt.sdr, &up->fmt.sdr, + sizeof(kp->fmt.sdr)) ? -EFAULT : 0; case V4L2_BUF_TYPE_META_CAPTURE: - return get_v4l2_meta_format(&kp->fmt.meta, &up->fmt.meta); + return copy_from_user(&kp->fmt.meta, &up->fmt.meta, + sizeof(kp->fmt.meta)) ? -EFAULT : 0; default: pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", kp->type); @@ -266,25 +185,30 @@ static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us switch (kp->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: case V4L2_BUF_TYPE_VIDEO_OUTPUT: - return put_v4l2_pix_format(&kp->fmt.pix, &up->fmt.pix); + return copy_to_user(&up->fmt.pix, &kp->fmt.pix, + sizeof(kp->fmt.pix)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - return put_v4l2_pix_format_mplane(&kp->fmt.pix_mp, - &up->fmt.pix_mp); + return copy_to_user(&up->fmt.pix_mp, &kp->fmt.pix_mp, + sizeof(kp->fmt.pix_mp)) ? -EFAULT : 0; case V4L2_BUF_TYPE_VIDEO_OVERLAY: case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: return put_v4l2_window32(&kp->fmt.win, &up->fmt.win); case V4L2_BUF_TYPE_VBI_CAPTURE: case V4L2_BUF_TYPE_VBI_OUTPUT: - return put_v4l2_vbi_format(&kp->fmt.vbi, &up->fmt.vbi); + return copy_to_user(&up->fmt.vbi, &kp->fmt.vbi, + sizeof(kp->fmt.vbi)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - return put_v4l2_sliced_vbi_format(&kp->fmt.sliced, &up->fmt.sliced); + return copy_to_user(&up->fmt.sliced, &kp->fmt.sliced, + sizeof(kp->fmt.sliced)) ? -EFAULT : 0; case V4L2_BUF_TYPE_SDR_CAPTURE: case V4L2_BUF_TYPE_SDR_OUTPUT: - return put_v4l2_sdr_format(&kp->fmt.sdr, &up->fmt.sdr); + return copy_to_user(&up->fmt.sdr, &kp->fmt.sdr, + sizeof(kp->fmt.sdr)) ? -EFAULT : 0; case V4L2_BUF_TYPE_META_CAPTURE: - return put_v4l2_meta_format(&kp->fmt.meta, &up->fmt.meta); + return copy_to_user(&up->fmt.meta, &kp->fmt.meta, + sizeof(kp->fmt.meta)) ? -EFAULT : 0; default: pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", kp->type); -- 2.15.1

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [PATCHv2 05/13] v4l2-compat-ioctl32.c: fix the indentation

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> The indentation of this source is all over the place. Fix this. This patch only changes whitespace. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 212 +++++++++++++------------- 1 file changed, 107 insertions(+), 105 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 76ed43e774dd..83066b21b0b2 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -49,12 +49,12 @@ struct v4l2_window32 { static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) { if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_window32)) || - copy_from_user(&kp->w, &up->w, sizeof(up->w)) || - get_user(kp->field, &up->field) || - get_user(kp->chromakey, &up->chromakey) || - get_user(kp->clipcount, &up->clipcount) || - get_user(kp->global_alpha, &up->global_alpha)) - return -EFAULT; + copy_from_user(&kp->w, &up->w, sizeof(up->w)) || + get_user(kp->field, &up->field) || + get_user(kp->chromakey, &up->chromakey) || + get_user(kp->clipcount, &up->clipcount) || + get_user(kp->global_alpha, &up->global_alpha)) + return -EFAULT; if (kp->clipcount > 2048) return -EINVAL; if (kp->clipcount) { @@ -84,11 +84,11 @@ static int get_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user static int put_v4l2_window32(struct v4l2_window *kp, struct v4l2_window32 __user *up) { if (copy_to_user(&up->w, &kp->w, sizeof(kp->w)) || - put_user(kp->field, &up->field) || - put_user(kp->chromakey, &up->chromakey) || - put_user(kp->clipcount, &up->clipcount) || - put_user(kp->global_alpha, &up->global_alpha)) - return -EFAULT; + put_user(kp->field, &up->field) || + put_user(kp->chromakey, &up->chromakey) || + put_user(kp->clipcount, &up->clipcount) || + put_user(kp->global_alpha, &up->global_alpha)) + return -EFAULT; return 0; } @@ -100,7 +100,7 @@ static inline int get_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pi } static inline int get_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp, - struct v4l2_pix_format_mplane __user *up) + struct v4l2_pix_format_mplane __user *up) { if (copy_from_user(kp, up, sizeof(struct v4l2_pix_format_mplane))) return -EFAULT; @@ -115,7 +115,7 @@ static inline int put_v4l2_pix_format(struct v4l2_pix_format *kp, struct v4l2_pi } static inline int put_v4l2_pix_format_mplane(struct v4l2_pix_format_mplane *kp, - struct v4l2_pix_format_mplane __user *up) + struct v4l2_pix_format_mplane __user *up) { if (copy_to_user(up, kp, sizeof(struct v4l2_pix_format_mplane))) return -EFAULT; @@ -238,7 +238,7 @@ static int __get_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us return get_v4l2_meta_format(&kp->fmt.meta, &up->fmt.meta); default: pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", - kp->type); + kp->type); return -EINVAL; } } @@ -287,7 +287,7 @@ static int __put_v4l2_format32(struct v4l2_format *kp, struct v4l2_format32 __us return put_v4l2_meta_format(&kp->fmt.meta, &up->fmt.meta); default: pr_info("compat_ioctl32: unexpected VIDIOC_FMT type %d\n", - kp->type); + kp->type); return -EINVAL; } } @@ -321,7 +321,7 @@ static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 { /* other fields are not set by the user, nor used by the driver */ if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_standard32)) || - get_user(kp->index, &up->index)) + get_user(kp->index, &up->index)) return -EFAULT; return 0; } @@ -329,13 +329,14 @@ static int get_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 static int put_v4l2_standard32(struct v4l2_standard *kp, struct v4l2_standard32 __user *up) { if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_standard32)) || - put_user(kp->index, &up->index) || - put_user(kp->id, &up->id) || - copy_to_user(up->name, kp->name, 24) || - copy_to_user(&up->frameperiod, &kp->frameperiod, sizeof(kp->frameperiod)) || - put_user(kp->framelines, &up->framelines) || - copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32))) - return -EFAULT; + put_user(kp->index, &up->index) || + put_user(kp->id, &up->id) || + copy_to_user(up->name, kp->name, 24) || + copy_to_user(&up->frameperiod, &kp->frameperiod, + sizeof(kp->frameperiod)) || + put_user(kp->framelines, &up->framelines) || + copy_to_user(up->reserved, kp->reserved, 4 * sizeof(__u32))) + return -EFAULT; return 0; } @@ -375,14 +376,14 @@ struct v4l2_buffer32 { }; static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32, - enum v4l2_memory memory) + enum v4l2_memory memory) { void __user *up_pln; compat_long_t p; if (copy_in_user(up, up32, 2 * sizeof(__u32)) || - copy_in_user(&up->data_offset, &up32->data_offset, - sizeof(__u32))) + copy_in_user(&up->data_offset, &up32->data_offset, + sizeof(__u32))) return -EFAULT; if (memory == V4L2_MEMORY_USERPTR) { @@ -396,7 +397,7 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ return -EFAULT; } else { if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset, - sizeof(__u32))) + sizeof(__u32))) return -EFAULT; } @@ -404,23 +405,23 @@ static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __ } static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32, - enum v4l2_memory memory) + enum v4l2_memory memory) { if (copy_in_user(up32, up, 2 * sizeof(__u32)) || - copy_in_user(&up32->data_offset, &up->data_offset, - sizeof(__u32))) + copy_in_user(&up32->data_offset, &up->data_offset, + sizeof(__u32))) return -EFAULT; /* For MMAP, driver might've set up the offset, so copy it back. * USERPTR stays the same (was userspace-provided), so no copying. */ if (memory == V4L2_MEMORY_MMAP) if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset, - sizeof(__u32))) + sizeof(__u32))) return -EFAULT; /* For DMABUF, driver might've set up the fd, so copy it back. */ if (memory == V4L2_MEMORY_DMABUF) if (copy_in_user(&up32->m.fd, &up->m.fd, - sizeof(int))) + sizeof(int))) return -EFAULT; return 0; @@ -434,19 +435,19 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user int ret; if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_buffer32)) || - get_user(kp->index, &up->index) || - get_user(kp->type, &up->type) || - get_user(kp->flags, &up->flags) || - get_user(kp->memory, &up->memory) || - get_user(kp->length, &up->length)) - return -EFAULT; + get_user(kp->index, &up->index) || + get_user(kp->type, &up->type) || + get_user(kp->flags, &up->flags) || + get_user(kp->memory, &up->memory) || + get_user(kp->length, &up->length)) + return -EFAULT; if (V4L2_TYPE_IS_OUTPUT(kp->type)) if (get_user(kp->bytesused, &up->bytesused) || - get_user(kp->field, &up->field) || - get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - get_user(kp->timestamp.tv_usec, - &up->timestamp.tv_usec)) + get_user(kp->field, &up->field) || + get_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || + get_user(kp->timestamp.tv_usec, + &up->timestamp.tv_usec)) return -EFAULT; if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) { @@ -466,7 +467,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user uplane32 = compat_ptr(p); if (!access_ok(VERIFY_READ, uplane32, - kp->length * sizeof(struct v4l2_plane32))) + kp->length * sizeof(struct v4l2_plane32))) return -EFAULT; /* We don't really care if userspace decides to kill itself @@ -490,12 +491,12 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user break; case V4L2_MEMORY_USERPTR: { - compat_long_t tmp; + compat_long_t tmp; - if (get_user(tmp, &up->m.userptr)) - return -EFAULT; + if (get_user(tmp, &up->m.userptr)) + return -EFAULT; - kp->m.userptr = (unsigned long)compat_ptr(tmp); + kp->m.userptr = (unsigned long)compat_ptr(tmp); } break; case V4L2_MEMORY_OVERLAY: @@ -521,22 +522,23 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user int ret; if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_buffer32)) || - put_user(kp->index, &up->index) || - put_user(kp->type, &up->type) || - put_user(kp->flags, &up->flags) || - put_user(kp->memory, &up->memory)) - return -EFAULT; + put_user(kp->index, &up->index) || + put_user(kp->type, &up->type) || + put_user(kp->flags, &up->flags) || + put_user(kp->memory, &up->memory)) + return -EFAULT; if (put_user(kp->bytesused, &up->bytesused) || - put_user(kp->field, &up->field) || - put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) || - copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) || - put_user(kp->sequence, &up->sequence) || - put_user(kp->reserved2, &up->reserved2) || - put_user(kp->reserved, &up->reserved) || - put_user(kp->length, &up->length)) - return -EFAULT; + put_user(kp->field, &up->field) || + put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || + put_user(kp->timestamp.tv_usec, &up->timestamp.tv_usec) || + copy_to_user(&up->timecode, &kp->timecode, + sizeof(struct v4l2_timecode)) || + put_user(kp->sequence, &up->sequence) || + put_user(kp->reserved2, &up->reserved2) || + put_user(kp->reserved, &up->reserved) || + put_user(kp->length, &up->length)) + return -EFAULT; if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) { num_planes = kp->length; @@ -600,11 +602,11 @@ static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame u32 tmp; if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_framebuffer32)) || - get_user(tmp, &up->base) || - get_user(kp->capability, &up->capability) || - get_user(kp->flags, &up->flags) || - copy_from_user(&kp->fmt, &up->fmt, sizeof(up->fmt))) - return -EFAULT; + get_user(tmp, &up->base) || + get_user(kp->capability, &up->capability) || + get_user(kp->flags, &up->flags) || + copy_from_user(&kp->fmt, &up->fmt, sizeof(up->fmt))) + return -EFAULT; kp->base = (__force void *)compat_ptr(tmp); return 0; } @@ -614,11 +616,11 @@ static int put_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame u32 tmp = (u32)((unsigned long)kp->base); if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_framebuffer32)) || - put_user(tmp, &up->base) || - put_user(kp->capability, &up->capability) || - put_user(kp->flags, &up->flags) || - copy_to_user(&up->fmt, &kp->fmt, sizeof(up->fmt))) - return -EFAULT; + put_user(tmp, &up->base) || + put_user(kp->capability, &up->capability) || + put_user(kp->flags, &up->flags) || + copy_to_user(&up->fmt, &kp->fmt, sizeof(up->fmt))) + return -EFAULT; return 0; } @@ -694,12 +696,12 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext compat_caddr_t p; if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_ext_controls32)) || - get_user(kp->which, &up->which) || - get_user(kp->count, &up->count) || - get_user(kp->error_idx, &up->error_idx) || - copy_from_user(kp->reserved, up->reserved, - sizeof(kp->reserved))) - return -EFAULT; + get_user(kp->which, &up->which) || + get_user(kp->count, &up->count) || + get_user(kp->error_idx, &up->error_idx) || + copy_from_user(kp->reserved, up->reserved, + sizeof(kp->reserved))) + return -EFAULT; if (kp->count == 0) { kp->controls = NULL; return 0; @@ -710,7 +712,7 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext return -EFAULT; ucontrols = compat_ptr(p); if (!access_ok(VERIFY_READ, ucontrols, - kp->count * sizeof(struct v4l2_ext_control32))) + kp->count * sizeof(struct v4l2_ext_control32))) return -EFAULT; kcontrols = compat_alloc_user_space(kp->count * sizeof(struct v4l2_ext_control)); @@ -746,11 +748,11 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext compat_caddr_t p; if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_ext_controls32)) || - put_user(kp->which, &up->which) || - put_user(kp->count, &up->count) || - put_user(kp->error_idx, &up->error_idx) || - copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) - return -EFAULT; + put_user(kp->which, &up->which) || + put_user(kp->count, &up->count) || + put_user(kp->error_idx, &up->error_idx) || + copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) + return -EFAULT; if (!kp->count) return 0; @@ -758,7 +760,7 @@ static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext return -EFAULT; ucontrols = compat_ptr(p); if (!access_ok(VERIFY_WRITE, ucontrols, - n * sizeof(struct v4l2_ext_control32))) + n * sizeof(struct v4l2_ext_control32))) return -EFAULT; while (--n >= 0) { @@ -796,15 +798,15 @@ struct v4l2_event32 { static int put_v4l2_event32(struct v4l2_event *kp, struct v4l2_event32 __user *up) { if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_event32)) || - put_user(kp->type, &up->type) || - copy_to_user(&up->u, &kp->u, sizeof(kp->u)) || - put_user(kp->pending, &up->pending) || - put_user(kp->sequence, &up->sequence) || - put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || - put_user(kp->timestamp.tv_nsec, &up->timestamp.tv_nsec) || - put_user(kp->id, &up->id) || - copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32))) - return -EFAULT; + put_user(kp->type, &up->type) || + copy_to_user(&up->u, &kp->u, sizeof(kp->u)) || + put_user(kp->pending, &up->pending) || + put_user(kp->sequence, &up->sequence) || + put_user(kp->timestamp.tv_sec, &up->timestamp.tv_sec) || + put_user(kp->timestamp.tv_nsec, &up->timestamp.tv_nsec) || + put_user(kp->id, &up->id) || + copy_to_user(up->reserved, kp->reserved, 8 * sizeof(__u32))) + return -EFAULT; return 0; } @@ -821,12 +823,12 @@ static int get_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) u32 tmp; if (!access_ok(VERIFY_READ, up, sizeof(struct v4l2_edid32)) || - get_user(kp->pad, &up->pad) || - get_user(kp->start_block, &up->start_block) || - get_user(kp->blocks, &up->blocks) || - get_user(tmp, &up->edid) || - copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved))) - return -EFAULT; + get_user(kp->pad, &up->pad) || + get_user(kp->start_block, &up->start_block) || + get_user(kp->blocks, &up->blocks) || + get_user(tmp, &up->edid) || + copy_from_user(kp->reserved, up->reserved, sizeof(kp->reserved))) + return -EFAULT; kp->edid = (__force u8 *)compat_ptr(tmp); return 0; } @@ -836,12 +838,12 @@ static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up) u32 tmp = (u32)((unsigned long)kp->edid); if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_edid32)) || - put_user(kp->pad, &up->pad) || - put_user(kp->start_block, &up->start_block) || - put_user(kp->blocks, &up->blocks) || - put_user(tmp, &up->edid) || - copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) - return -EFAULT; + put_user(kp->pad, &up->pad) || + put_user(kp->start_block, &up->start_block) || + put_user(kp->blocks, &up->blocks) || + put_user(tmp, &up->edid) || + copy_to_user(up->reserved, kp->reserved, sizeof(up->reserved))) + return -EFAULT; return 0; } -- 2.15.1

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [PATCHv2 04/13] v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> The result of the VIDIOC_PREPARE_BUF ioctl was never copied back to userspace since it was missing in the switch. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index e48d59046086..76ed43e774dd 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -1052,6 +1052,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar err = put_v4l2_create32(&karg.v2crt, up); break; + case VIDIOC_PREPARE_BUF: case VIDIOC_QUERYBUF: case VIDIOC_QBUF: case VIDIOC_DQBUF: -- 2.15.1

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [PATCHv2 02/13] v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> Don't duplicate the buffer type checks in enum/g/s/try_fmt. The check_fmt function does that already. It is hard to keep the checks in sync for all these functions and in fact the check for VBI was wrong in the _fmt functions as it allowed SDR types as well. This caused a v4l2-compliance failure for /dev/swradio0 using vivid. This simplifies the code and keeps the check in one place and fixes the SDR/VBI bug. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/v4l2-core/v4l2-ioctl.c | 140 ++++++++++++++--------------------- 1 file changed, 54 insertions(+), 86 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 59d2100eeff6..c7f6b65d3ad7 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1316,52 +1316,50 @@ static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_fmtdesc *p = arg; - struct video_device *vfd = video_devdata(file); - bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; - bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; - bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; - bool is_rx = vfd->vfl_dir != VFL_DIR_TX; - bool is_tx = vfd->vfl_dir != VFL_DIR_RX; - int ret = -EINVAL; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; + ret = -EINVAL; switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_enum_fmt_vid_cap)) + if (unlikely(!ops->vidioc_enum_fmt_vid_cap)) break; ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg); break; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_cap_mplane)) + if (unlikely(!ops->vidioc_enum_fmt_vid_cap_mplane)) break; ret = ops->vidioc_enum_fmt_vid_cap_mplane(file, fh, arg); break; case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_vid_overlay)) + if (unlikely(!ops->vidioc_enum_fmt_vid_overlay)) break; ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg); break; case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out)) + if (unlikely(!ops->vidioc_enum_fmt_vid_out)) break; ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg); break; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_enum_fmt_vid_out_mplane)) + if (unlikely(!ops->vidioc_enum_fmt_vid_out_mplane)) break; ret = ops->vidioc_enum_fmt_vid_out_mplane(file, fh, arg); break; case V4L2_BUF_TYPE_SDR_CAPTURE: - if (unlikely(!is_rx || !is_sdr || !ops->vidioc_enum_fmt_sdr_cap)) + if (unlikely(!ops->vidioc_enum_fmt_sdr_cap)) break; ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg); break; case V4L2_BUF_TYPE_SDR_OUTPUT: - if (unlikely(!is_tx || !is_sdr || !ops->vidioc_enum_fmt_sdr_out)) + if (unlikely(!ops->vidioc_enum_fmt_sdr_out)) break; ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg); break; case V4L2_BUF_TYPE_META_CAPTURE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_enum_fmt_meta_cap)) + if (unlikely(!ops->vidioc_enum_fmt_meta_cap)) break; ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); break; @@ -1375,13 +1373,10 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_format *p = arg; - struct video_device *vfd = video_devdata(file); - bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; - bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; - bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; - bool is_rx = vfd->vfl_dir != VFL_DIR_TX; - bool is_tx = vfd->vfl_dir != VFL_DIR_RX; - int ret; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; /* * fmt can't be cleared for these overlay types due to the 'clips' @@ -1409,7 +1404,7 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_g_fmt_vid_cap)) + if (unlikely(!ops->vidioc_g_fmt_vid_cap)) break; p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg); @@ -1417,23 +1412,15 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_cap_mplane)) - break; return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_vid_overlay)) - break; return ops->vidioc_g_fmt_vid_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_vbi_cap)) - break; return ops->vidioc_g_fmt_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_cap)) - break; return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out)) + if (unlikely(!ops->vidioc_g_fmt_vid_out)) break; p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; ret = ops->vidioc_g_fmt_vid_out(file, fh, arg); @@ -1441,32 +1428,18 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_mplane)) - break; return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_g_fmt_vid_out_overlay)) - break; return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_vbi_out)) - break; return ops->vidioc_g_fmt_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_g_fmt_sliced_vbi_out)) - break; return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SDR_CAPTURE: - if (unlikely(!is_rx || !is_sdr || !ops->vidioc_g_fmt_sdr_cap)) - break; return ops->vidioc_g_fmt_sdr_cap(file, fh, arg); case V4L2_BUF_TYPE_SDR_OUTPUT: - if (unlikely(!is_tx || !is_sdr || !ops->vidioc_g_fmt_sdr_out)) - break; return ops->vidioc_g_fmt_sdr_out(file, fh, arg); case V4L2_BUF_TYPE_META_CAPTURE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_g_fmt_meta_cap)) - break; return ops->vidioc_g_fmt_meta_cap(file, fh, arg); } return -EINVAL; @@ -1492,12 +1465,10 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, { struct v4l2_format *p = arg; struct video_device *vfd = video_devdata(file); - bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; - bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; - bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; - bool is_rx = vfd->vfl_dir != VFL_DIR_TX; - bool is_tx = vfd->vfl_dir != VFL_DIR_RX; - int ret; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; ret = v4l_enable_media_source(vfd); if (ret) @@ -1506,37 +1477,37 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_s_fmt_vid_cap)) + if (unlikely(!ops->vidioc_s_fmt_vid_cap)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg); /* just in case the driver zeroed it again */ p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; - if (is_tch) + if (vfd->vfl_type == VFL_TYPE_TOUCH) v4l_pix_format_touch(&p->fmt.pix); return ret; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_cap_mplane)) + if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_vid_overlay)) + if (unlikely(!ops->vidioc_s_fmt_vid_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_s_fmt_vid_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_vbi_cap)) + if (unlikely(!ops->vidioc_s_fmt_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.vbi); return ops->vidioc_s_fmt_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_cap)) + if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sliced); return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out)) + if (unlikely(!ops->vidioc_s_fmt_vid_out)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_s_fmt_vid_out(file, fh, arg); @@ -1544,37 +1515,37 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_mplane)) + if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_s_fmt_vid_out_overlay)) + if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_vbi_out)) + if (unlikely(!ops->vidioc_s_fmt_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.vbi); return ops->vidioc_s_fmt_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_s_fmt_sliced_vbi_out)) + if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.sliced); return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SDR_CAPTURE: - if (unlikely(!is_rx || !is_sdr || !ops->vidioc_s_fmt_sdr_cap)) + if (unlikely(!ops->vidioc_s_fmt_sdr_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sdr); return ops->vidioc_s_fmt_sdr_cap(file, fh, arg); case V4L2_BUF_TYPE_SDR_OUTPUT: - if (unlikely(!is_tx || !is_sdr || !ops->vidioc_s_fmt_sdr_out)) + if (unlikely(!ops->vidioc_s_fmt_sdr_out)) break; CLEAR_AFTER_FIELD(p, fmt.sdr); return ops->vidioc_s_fmt_sdr_out(file, fh, arg); case V4L2_BUF_TYPE_META_CAPTURE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_s_fmt_meta_cap)) + if (unlikely(!ops->vidioc_s_fmt_meta_cap)) break; CLEAR_AFTER_FIELD(p, fmt.meta); return ops->vidioc_s_fmt_meta_cap(file, fh, arg); @@ -1586,19 +1557,16 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, struct file *file, void *fh, void *arg) { struct v4l2_format *p = arg; - struct video_device *vfd = video_devdata(file); - bool is_vid = vfd->vfl_type == VFL_TYPE_GRABBER; - bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR; - bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH; - bool is_rx = vfd->vfl_dir != VFL_DIR_TX; - bool is_tx = vfd->vfl_dir != VFL_DIR_RX; - int ret; + int ret = check_fmt(file, p->type); + + if (ret) + return ret; v4l_sanitize_format(p); switch (p->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: - if (unlikely(!is_rx || (!is_vid && !is_tch) || !ops->vidioc_try_fmt_vid_cap)) + if (unlikely(!ops->vidioc_try_fmt_vid_cap)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg); @@ -1606,27 +1574,27 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_cap_mplane)) + if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OVERLAY: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_vid_overlay)) + if (unlikely(!ops->vidioc_try_fmt_vid_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_try_fmt_vid_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_vbi_cap)) + if (unlikely(!ops->vidioc_try_fmt_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.vbi); return ops->vidioc_try_fmt_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: - if (unlikely(!is_rx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_cap)) + if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sliced); return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out)) + if (unlikely(!ops->vidioc_try_fmt_vid_out)) break; CLEAR_AFTER_FIELD(p, fmt.pix); ret = ops->vidioc_try_fmt_vid_out(file, fh, arg); @@ -1634,37 +1602,37 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC; return ret; case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_mplane)) + if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane)) break; CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func); return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg); case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: - if (unlikely(!is_tx || !is_vid || !ops->vidioc_try_fmt_vid_out_overlay)) + if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay)) break; CLEAR_AFTER_FIELD(p, fmt.win); return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg); case V4L2_BUF_TYPE_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_vbi_out)) + if (unlikely(!ops->vidioc_try_fmt_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.vbi); return ops->vidioc_try_fmt_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: - if (unlikely(!is_tx || is_vid || !ops->vidioc_try_fmt_sliced_vbi_out)) + if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out)) break; CLEAR_AFTER_FIELD(p, fmt.sliced); return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg); case V4L2_BUF_TYPE_SDR_CAPTURE: - if (unlikely(!is_rx || !is_sdr || !ops->vidioc_try_fmt_sdr_cap)) + if (unlikely(!ops->vidioc_try_fmt_sdr_cap)) break; CLEAR_AFTER_FIELD(p, fmt.sdr); return ops->vidioc_try_fmt_sdr_cap(file, fh, arg); case V4L2_BUF_TYPE_SDR_OUTPUT: - if (unlikely(!is_tx || !is_sdr || !ops->vidioc_try_fmt_sdr_out)) + if (unlikely(!ops->vidioc_try_fmt_sdr_out)) break; CLEAR_AFTER_FIELD(p, fmt.sdr); return ops->vidioc_try_fmt_sdr_out(file, fh, arg); case V4L2_BUF_TYPE_META_CAPTURE: - if (unlikely(!is_rx || !is_vid || !ops->vidioc_try_fmt_meta_cap)) + if (unlikely(!ops->vidioc_try_fmt_meta_cap)) break; CLEAR_AFTER_FIELD(p, fmt.meta); return ops->vidioc_try_fmt_meta_cap(file, fh, arg); -- 2.15.1

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [PATCHv2 01/13] vivid: fix module load error when enabling fb and no_error_inj=1

by Hans Verkuil

From: Hans Verkuil <hans.verkuil(a)cisco.com> If the framebuffer is enabled and error injection is disabled, then creating the controls for the video output device would fail with an error. This is because the Clear Framebuffer control uses the 'vivid control class' and that control class isn't added if error injection is disabled. In addition, this control was added to e.g. vbi devices as well, which makes no sense. Move this control to its own control handler and handle it correctly. Signed-off-by: Hans Verkuil <hans.verkuil(a)cisco.com> Acked-by: Sakari Ailus <sakari.ailus(a)linux.intel.com> Cc: <stable(a)vger.kernel.org> # for v4.15 and up --- drivers/media/platform/vivid/vivid-core.h | 1 + drivers/media/platform/vivid/vivid-ctrls.c | 35 +++++++++++++++++++++++++----- 2 files changed, 30 insertions(+), 6 deletions(-) diff --git a/drivers/media/platform/vivid/vivid-core.h b/drivers/media/platform/vivid/vivid-core.h index 50802e650750..c90e4a0ab94e 100644 --- a/drivers/media/platform/vivid/vivid-core.h +++ b/drivers/media/platform/vivid/vivid-core.h @@ -154,6 +154,7 @@ struct vivid_dev { struct v4l2_ctrl_handler ctrl_hdl_streaming; struct v4l2_ctrl_handler ctrl_hdl_sdtv_cap; struct v4l2_ctrl_handler ctrl_hdl_loop_cap; + struct v4l2_ctrl_handler ctrl_hdl_fb; struct video_device vid_cap_dev; struct v4l2_ctrl_handler ctrl_hdl_vid_cap; struct video_device vid_out_dev; diff --git a/drivers/media/platform/vivid/vivid-ctrls.c b/drivers/media/platform/vivid/vivid-ctrls.c index 34731f71cc00..3f9d354827af 100644 --- a/drivers/media/platform/vivid/vivid-ctrls.c +++ b/drivers/media/platform/vivid/vivid-ctrls.c @@ -120,9 +120,6 @@ static int vivid_user_gen_s_ctrl(struct v4l2_ctrl *ctrl) clear_bit(V4L2_FL_REGISTERED, &dev->radio_rx_dev.flags); clear_bit(V4L2_FL_REGISTERED, &dev->radio_tx_dev.flags); break; - case VIVID_CID_CLEAR_FB: - vivid_clear_fb(dev); - break; case VIVID_CID_BUTTON: dev->button_pressed = 30; break; @@ -274,8 +271,28 @@ static const struct v4l2_ctrl_config vivid_ctrl_disconnect = { .type = V4L2_CTRL_TYPE_BUTTON, }; + +/* Framebuffer Controls */ + +static int vivid_fb_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct vivid_dev *dev = container_of(ctrl->handler, + struct vivid_dev, ctrl_hdl_fb); + + switch (ctrl->id) { + case VIVID_CID_CLEAR_FB: + vivid_clear_fb(dev); + break; + } + return 0; +} + +static const struct v4l2_ctrl_ops vivid_fb_ctrl_ops = { + .s_ctrl = vivid_fb_s_ctrl, +}; + static const struct v4l2_ctrl_config vivid_ctrl_clear_fb = { - .ops = &vivid_user_gen_ctrl_ops, + .ops = &vivid_fb_ctrl_ops, .id = VIVID_CID_CLEAR_FB, .name = "Clear Framebuffer", .type = V4L2_CTRL_TYPE_BUTTON, @@ -1357,6 +1374,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, struct v4l2_ctrl_handler *hdl_streaming = &dev->ctrl_hdl_streaming; struct v4l2_ctrl_handler *hdl_sdtv_cap = &dev->ctrl_hdl_sdtv_cap; struct v4l2_ctrl_handler *hdl_loop_cap = &dev->ctrl_hdl_loop_cap; + struct v4l2_ctrl_handler *hdl_fb = &dev->ctrl_hdl_fb; struct v4l2_ctrl_handler *hdl_vid_cap = &dev->ctrl_hdl_vid_cap; struct v4l2_ctrl_handler *hdl_vid_out = &dev->ctrl_hdl_vid_out; struct v4l2_ctrl_handler *hdl_vbi_cap = &dev->ctrl_hdl_vbi_cap; @@ -1384,10 +1402,12 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, v4l2_ctrl_new_custom(hdl_sdtv_cap, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_loop_cap, 1); v4l2_ctrl_new_custom(hdl_loop_cap, &vivid_ctrl_class, NULL); + v4l2_ctrl_handler_init(hdl_fb, 1); + v4l2_ctrl_new_custom(hdl_fb, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_vid_cap, 55); v4l2_ctrl_new_custom(hdl_vid_cap, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_vid_out, 26); - if (!no_error_inj) + if (!no_error_inj || dev->has_fb) v4l2_ctrl_new_custom(hdl_vid_out, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_vbi_cap, 21); v4l2_ctrl_new_custom(hdl_vbi_cap, &vivid_ctrl_class, NULL); @@ -1561,7 +1581,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, v4l2_ctrl_new_custom(hdl_loop_cap, &vivid_ctrl_loop_video, NULL); if (dev->has_fb) - v4l2_ctrl_new_custom(hdl_user_gen, &vivid_ctrl_clear_fb, NULL); + v4l2_ctrl_new_custom(hdl_fb, &vivid_ctrl_clear_fb, NULL); if (dev->has_radio_rx) { v4l2_ctrl_new_custom(hdl_radio_rx, &vivid_ctrl_radio_hw_seek_mode, NULL); @@ -1658,6 +1678,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, v4l2_ctrl_add_handler(hdl_vid_cap, hdl_streaming, NULL); v4l2_ctrl_add_handler(hdl_vid_cap, hdl_sdtv_cap, NULL); v4l2_ctrl_add_handler(hdl_vid_cap, hdl_loop_cap, NULL); + v4l2_ctrl_add_handler(hdl_vid_cap, hdl_fb, NULL); if (hdl_vid_cap->error) return hdl_vid_cap->error; dev->vid_cap_dev.ctrl_handler = hdl_vid_cap; @@ -1666,6 +1687,7 @@ int vivid_create_controls(struct vivid_dev *dev, bool show_ccs_cap, v4l2_ctrl_add_handler(hdl_vid_out, hdl_user_gen, NULL); v4l2_ctrl_add_handler(hdl_vid_out, hdl_user_aud, NULL); v4l2_ctrl_add_handler(hdl_vid_out, hdl_streaming, NULL); + v4l2_ctrl_add_handler(hdl_vid_out, hdl_fb, NULL); if (hdl_vid_out->error) return hdl_vid_out->error; dev->vid_out_dev.ctrl_handler = hdl_vid_out; @@ -1725,4 +1747,5 @@ void vivid_free_controls(struct vivid_dev *dev) v4l2_ctrl_handler_free(&dev->ctrl_hdl_streaming); v4l2_ctrl_handler_free(&dev->ctrl_hdl_sdtv_cap); v4l2_ctrl_handler_free(&dev->ctrl_hdl_loop_cap); + v4l2_ctrl_handler_free(&dev->ctrl_hdl_fb); } -- 2.15.1

7 years, 7 months

1
0
0 0

[Linux-stable-mirror] [PATCH] lib/strscpy: remove word-at-a-time optimization.

by Andrey Ryabinin

strscpy() performs the word-at-a-time optimistic reads. So it may may access the memory past the end of the object, which is perfectly fine since strscpy() doesn't use that (past-the-end) data and makes sure the optimistic read won't cross a page boundary. But KASAN doesn't know anything about that so it will complain. There are several possible ways to address this issue, but none are perfect. See https://lkml.kernel.org/r/9f0a9cf6-51f7-cd1f-5dc6-6d510a7b8ec4@virtuozzo.com It seems the best solution is to simply disable word-at-a-time optimization. My trivial testing shows that byte-at-a-time could be up to x4.3 times slower than word-at-a-time. It may seems like a lot, but it's actually ~1.2e-10 sec per symbol vs ~4.8e-10 sec per symbol on modern hardware. And we don't use strscpy() in a performance critical paths to copy large amounts of data, so it shouldn't matter anyway. Fixes: 30035e45753b7 ("string: provide strscpy()") Signed-off-by: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Cc: <stable(a)vger.kernel.org> --- lib/string.c | 38 -------------------------------------- 1 file changed, 38 deletions(-) diff --git a/lib/string.c b/lib/string.c index 64a9e33f1daa..6205dd71aa0f 100644 --- a/lib/string.c +++ b/lib/string.c @@ -29,7 +29,6 @@ #include <linux/errno.h> #include <asm/byteorder.h> -#include <asm/word-at-a-time.h> #include <asm/page.h> #ifndef __HAVE_ARCH_STRNCASECMP @@ -177,45 +176,8 @@ EXPORT_SYMBOL(strlcpy); */ ssize_t strscpy(char *dest, const char *src, size_t count) { - const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS; - size_t max = count; long res = 0; - if (count == 0) - return -E2BIG; - -#ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS - /* - * If src is unaligned, don't cross a page boundary, - * since we don't know if the next page is mapped. - */ - if ((long)src & (sizeof(long) - 1)) { - size_t limit = PAGE_SIZE - ((long)src & (PAGE_SIZE - 1)); - if (limit < max) - max = limit; - } -#else - /* If src or dest is unaligned, don't do word-at-a-time. */ - if (((long) dest | (long) src) & (sizeof(long) - 1)) - max = 0; -#endif - - while (max >= sizeof(unsigned long)) { - unsigned long c, data; - - c = *(unsigned long *)(src+res); - if (has_zero(c, &data, &constants)) { - data = prep_zero_mask(c, data, &constants); - data = create_zero_mask(data); - *(unsigned long *)(dest+res) = c & zero_bytemask(data); - return res + find_zero(data); - } - *(unsigned long *)(dest+res) = c; - res += sizeof(unsigned long); - count -= sizeof(unsigned long); - max -= sizeof(unsigned long); - } - while (count) { char c; -- 2.13.6

7 years, 7 months

6
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Re: [Linux-stable-mirror] [PATCH 3.18 00/52] 3.18.93-stable review

by Greg Kroah-Hartman

On Tue, Jan 30, 2018 at 05:09:07AM +0000, Harsh Shandilya wrote: > On Tue 30 Jan, 2018, 2:20 AM Greg Kroah-Hartman, <gregkh(a)linuxfoundation.org> > wrote: > > > This is the start of the stable review cycle for the 3.18.93 release. > > There are 52 patches in this series, all will be posted as a response > > to this one. If anyone has any issues with these being applied, please > > let me know. > > > > Responses should be made by Wed Jan 31 12:36:07 UTC 2018. > > Anything received after that time might be too late. > > > > The whole patch series can be found in one patch at: > > > > kernel.org/pub/linux/kernel/v3.x/stable-review/patch-3.18.93-rc1.gz > > or in the git tree and branch at: > > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git > > linux-3.18.y > > and the diffstat can be found below. > > > > thanks, > > > > greg k-h > > > > Builds and boots on the OnePlus 3, no dmesg or userspace regressions. Yeah, it's still working! :) thanks for testing and letting me know. greg k-h

7 years, 7 months

1
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[Linux-stable-mirror] + revert-kernel-relayc-fix-potential-memory-leak.patch added to -mm tree

by akpm＠linux-foundation.org

The patch titled Subject: kernel/relay.c: revert "kernel/relay.c: fix potential memory leak" has been added to the -mm tree. Its filename is revert-kernel-relayc-fix-potential-memory-leak.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/revert-kernel-relayc-fix-potential… and later at http://ozlabs.org/~akpm/mmotm/broken-out/revert-kernel-relayc-fix-potential… Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Eric Biggers <ebiggers(a)google.com> Subject: kernel/relay.c: revert "kernel/relay.c: fix potential memory leak" This reverts ba62bafe942b159a6 ("kernel/relay.c: fix potential memory leak"). This commit introduced a double free bug, because 'chan' is already freed by the line: kref_put(&chan->kref, relay_destroy_channel); This bug was found by syzkaller, using the BLKTRACESETUP ioctl. Link: http://lkml.kernel.org/r/20180127004759.101823-1-ebiggers3@gmail.com Fixes: ba62bafe942b ("kernel/relay.c: fix potential memory leak") Signed-off-by: Eric Biggers <ebiggers(a)google.com> Reported-by: syzbot <syzkaller(a)googlegroups.com> Reviewed-by: Andrew Morton <akpm(a)linux-foundation.org> Cc: Zhouyi Zhou <yizhouzhou(a)ict.ac.cn> Cc: Jens Axboe <axboe(a)kernel.dk> Cc: <stable(a)vger.kernel.org> [4.7+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- kernel/relay.c | 1 - 1 file changed, 1 deletion(-) diff -puN kernel/relay.c~revert-kernel-relayc-fix-potential-memory-leak kernel/relay.c --- a/kernel/relay.c~revert-kernel-relayc-fix-potential-memory-leak +++ a/kernel/relay.c @@ -611,7 +611,6 @@ free_bufs: kref_put(&chan->kref, relay_destroy_channel); mutex_unlock(&relay_channels_mutex); - kfree(chan); return NULL; } EXPORT_SYMBOL_GPL(relay_open); _ Patches currently in -mm which might be from ebiggers(a)google.com are userfaultfd-convert-to-use-anon_inode_getfd.patch revert-kernel-relayc-fix-potential-memory-leak.patch pipe-sysctl-drop-min-parameter-from-pipe-max-size-converter.patch pipe-sysctl-remove-pipe_proc_fn.patch pipe-actually-allow-root-to-exceed-the-pipe-buffer-limits.patch pipe-fix-off-by-one-error-when-checking-buffer-limits.patch pipe-reject-f_setpipe_sz-with-size-over-uint_max.patch pipe-simplify-round_pipe_size.patch pipe-read-buffer-limits-atomically.patch

7 years, 7 months

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[Linux-stable-mirror] FAILED: patch "[PATCH] drm/nouveau: Move irq setup/teardown to pci ctor/dtor" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 0fd189a95fdbc631737df5f27a0fc0a3dd31b75e Mon Sep 17 00:00:00 2001 From: Lyude Paul <lyude(a)redhat.com> Date: Thu, 25 Jan 2018 18:29:53 -0500 Subject: [PATCH] drm/nouveau: Move irq setup/teardown to pci ctor/dtor For a while we've been having issues with seemingly random interrupts coming from nvidia cards when resuming them. Originally the fix for this was thought to be just re-arming the MSI interrupt registers right after re-allocating our IRQs, however it seems a lot of what we do is both wrong and not even nessecary. This was made apparent by what appeared to be a regression in the mainline kernel that started introducing suspend/resume issues for nouveau: a0c9259dc4e1 (irq/matrix: Spread interrupts on allocation) After this commit was introduced, we started getting interrupts from the GPU before we actually re-allocated our own IRQ (see references below) and assigned the IRQ handler. Investigating this turned out that the problem was not with the commit, but the fact that nouveau even free/allocates it's irqs before and after suspend/resume. For starters: drivers in the linux kernel haven't had to handle freeing/re-allocating their IRQs during suspend/resume cycles for quite a while now. Nouveau seems to be one of the few drivers left that still does this, despite the fact there's no reason we actually need to since disabling interrupts from the device side should be enough, as the kernel is already smart enough to know to disable host-side interrupts for us before going into suspend. Since we were tearing down our IRQs by hand however, that means there was a short period during resume where interrupts could be received before we re-allocated our IRQ which would lead to us getting an unhandled IRQ. Since we never handle said IRQ and re-arm the interrupt registers, this would cause us to miss all of the interrupts from the GPU and cause our init process to start timing out on anything requiring interrupts. So, since this whole setup/teardown every suspend/resume cycle is useless anyway, move irq setup/teardown into the pci subdev's ctor/dtor functions instead so they're only called at driver load and driver unload. This should fix most of the issues with pending interrupts on resume, along with getting suspend/resume for nouveau to work again. As well, this probably means we can also just remove the msi rearm call inside nvkm_pci_init(). But since our main focus here is to fix suspend/resume before 4.15, we'll save that for a later patch. Signed-off-by: Lyude Paul <lyude(a)redhat.com> Cc: Karol Herbst <kherbst(a)redhat.com> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Mike Galbraith <efault(a)gmx.de> Cc: stable(a)vger.kernel.org Signed-off-by: Ben Skeggs <bskeggs(a)redhat.com> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c index deb96de54b00..ee2431a7804e 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c @@ -71,6 +71,10 @@ nvkm_pci_intr(int irq, void *arg) struct nvkm_pci *pci = arg; struct nvkm_device *device = pci->subdev.device; bool handled = false; + + if (pci->irq < 0) + return IRQ_HANDLED; + nvkm_mc_intr_unarm(device); if (pci->msi) pci->func->msi_rearm(pci); @@ -84,11 +88,6 @@ nvkm_pci_fini(struct nvkm_subdev *subdev, bool suspend) { struct nvkm_pci *pci = nvkm_pci(subdev); - if (pci->irq >= 0) { - free_irq(pci->irq, pci); - pci->irq = -1; - } - if (pci->agp.bridge) nvkm_agp_fini(pci); @@ -108,8 +107,20 @@ static int nvkm_pci_oneinit(struct nvkm_subdev *subdev) { struct nvkm_pci *pci = nvkm_pci(subdev); - if (pci_is_pcie(pci->pdev)) - return nvkm_pcie_oneinit(pci); + struct pci_dev *pdev = pci->pdev; + int ret; + + if (pci_is_pcie(pci->pdev)) { + ret = nvkm_pcie_oneinit(pci); + if (ret) + return ret; + } + + ret = request_irq(pdev->irq, nvkm_pci_intr, IRQF_SHARED, "nvkm", pci); + if (ret) + return ret; + + pci->irq = pdev->irq; return 0; } @@ -117,7 +128,6 @@ static int nvkm_pci_init(struct nvkm_subdev *subdev) { struct nvkm_pci *pci = nvkm_pci(subdev); - struct pci_dev *pdev = pci->pdev; int ret; if (pci->agp.bridge) { @@ -131,28 +141,34 @@ nvkm_pci_init(struct nvkm_subdev *subdev) if (pci->func->init) pci->func->init(pci); - ret = request_irq(pdev->irq, nvkm_pci_intr, IRQF_SHARED, "nvkm", pci); - if (ret) - return ret; - - pci->irq = pdev->irq; - /* Ensure MSI interrupts are armed, for the case where there are * already interrupts pending (for whatever reason) at load time. */ if (pci->msi) pci->func->msi_rearm(pci); - return ret; + return 0; } static void * nvkm_pci_dtor(struct nvkm_subdev *subdev) { struct nvkm_pci *pci = nvkm_pci(subdev); + nvkm_agp_dtor(pci); + + if (pci->irq >= 0) { + /* freq_irq() will call the handler, we use pci->irq == -1 + * to signal that it's been torn down and should be a noop. + */ + int irq = pci->irq; + pci->irq = -1; + free_irq(irq, pci); + } + if (pci->msi) pci_disable_msi(pci->pdev); + return nvkm_pci(subdev); }

7 years, 7 months

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[Linux-stable-mirror] Patch "net: igmp: fix source address check for IGMPv3 reports" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: igmp: fix source address check for IGMPv3 reports to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-igmp-fix-source-address-check-for-igmpv3-reports.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Sun Jan 28 17:35:08 CET 2018 From: Felix Fietkau <nbd(a)nbd.name> Date: Fri, 19 Jan 2018 11:50:46 +0100 Subject: net: igmp: fix source address check for IGMPv3 reports From: Felix Fietkau <nbd(a)nbd.name> [ Upstream commit ad23b750933ea7bf962678972a286c78a8fa36aa ] Commit "net: igmp: Use correct source address on IGMPv3 reports" introduced a check to validate the source address of locally generated IGMPv3 packets. Instead of checking the local interface address directly, it uses inet_ifa_match(fl4->saddr, ifa), which checks if the address is on the local subnet (or equal to the point-to-point address if used). This breaks for point-to-point interfaces, so check against ifa->ifa_local directly. Cc: Kevin Cernekee <cernekee(a)chromium.org> Fixes: a46182b00290 ("net: igmp: Use correct source address on IGMPv3 reports") Reported-by: Sebastian Gottschall <s.gottschall(a)dd-wrt.com> Signed-off-by: Felix Fietkau <nbd(a)nbd.name> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/ipv4/igmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -332,7 +332,7 @@ static __be32 igmpv3_get_srcaddr(struct return htonl(INADDR_ANY); for_ifa(in_dev) { - if (inet_ifa_match(fl4->saddr, ifa)) + if (fl4->saddr == ifa->ifa_local) return fl4->saddr; } endfor_ifa(in_dev); Patches currently in stable-queue which might be from nbd(a)nbd.name are queue-4.14/net-igmp-fix-source-address-check-for-igmpv3-reports.patch

7 years, 7 months

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[Linux-stable-mirror] [PATCH] drm/ttm: Fix 'buf' pointer update in ttm_bo_vm_access_kmap() (v2)

by Tom St Denis

The buf pointer was not being incremented inside the loop meaning the same block of data would be read or written repeatedly. Fixes: 09ac4fcb3f25 ("drm/ttm: Implement vm_operations_struct.access v2") Signed-off-by: Tom St Denis <tom.stdenis(a)amd.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> (v2) Change 'buf' pointer to uint8_t* type --- drivers/gpu/drm/ttm/ttm_bo_vm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 08a3c324242e..60fcef1593dd 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -316,7 +316,7 @@ static void ttm_bo_vm_close(struct vm_area_struct *vma) static int ttm_bo_vm_access_kmap(struct ttm_buffer_object *bo, unsigned long offset, - void *buf, int len, int write) + uint8_t *buf, int len, int write) { unsigned long page = offset >> PAGE_SHIFT; unsigned long bytes_left = len; @@ -345,6 +345,7 @@ static int ttm_bo_vm_access_kmap(struct ttm_buffer_object *bo, ttm_bo_kunmap(&map); page++; + buf += bytes; bytes_left -= bytes; offset = 0; } while (bytes_left); -- 2.14.3

7 years, 7 months

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[Linux-stable-mirror] FAILED: patch "[PATCH] hrtimer: Reset hrtimer cpu base proper on CPU hotplug" failed to apply to 3.18-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 3.18-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From d5421ea43d30701e03cadc56a38854c36a8b4433 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner <tglx(a)linutronix.de> Date: Fri, 26 Jan 2018 14:54:32 +0100 Subject: [PATCH] hrtimer: Reset hrtimer cpu base proper on CPU hotplug The hrtimer interrupt code contains a hang detection and mitigation mechanism, which prevents that a long delayed hrtimer interrupt causes a continous retriggering of interrupts which prevent the system from making progress. If a hang is detected then the timer hardware is programmed with a certain delay into the future and a flag is set in the hrtimer cpu base which prevents newly enqueued timers from reprogramming the timer hardware prior to the chosen delay. The subsequent hrtimer interrupt after the delay clears the flag and resumes normal operation. If such a hang happens in the last hrtimer interrupt before a CPU is unplugged then the hang_detected flag is set and stays that way when the CPU is plugged in again. At that point the timer hardware is not armed and it cannot be armed because the hang_detected flag is still active, so nothing clears that flag. As a consequence the CPU does not receive hrtimer interrupts and no timers expire on that CPU which results in RCU stalls and other malfunctions. Clear the flag along with some other less critical members of the hrtimer cpu base to ensure starting from a clean state when a CPU is plugged in. Thanks to Paul, Sebastian and Anna-Maria for their help to get down to the root cause of that hard to reproduce heisenbug. Once understood it's trivial and certainly justifies a brown paperbag. Fixes: 41d2e4949377 ("hrtimer: Tune hrtimer_interrupt hang logic") Reported-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Sebastian Sewior <bigeasy(a)linutronix.de> Cc: Anna-Maria Gleixner <anna-maria(a)linutronix.de> Cc: stable(a)vger.kernel.org Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801261447590.2067@nanos diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index d32520840fde..aa9d2a2b1210 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -655,7 +655,9 @@ static void hrtimer_reprogram(struct hrtimer *timer, static inline void hrtimer_init_hres(struct hrtimer_cpu_base *base) { base->expires_next = KTIME_MAX; + base->hang_detected = 0; base->hres_active = 0; + base->next_timer = NULL; } /* @@ -1589,6 +1591,7 @@ int hrtimers_prepare_cpu(unsigned int cpu) timerqueue_init_head(&cpu_base->clock_base[i].active); } + cpu_base->active_bases = 0; cpu_base->cpu = cpu; hrtimer_init_hres(cpu_base); return 0;

7 years, 7 months

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[Linux-stable-mirror] Patch "hrtimer: Reset hrtimer cpu base proper on CPU hotplug" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled hrtimer: Reset hrtimer cpu base proper on CPU hotplug to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: hrtimer-reset-hrtimer-cpu-base-proper-on-cpu-hotplug.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From d5421ea43d30701e03cadc56a38854c36a8b4433 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner <tglx(a)linutronix.de> Date: Fri, 26 Jan 2018 14:54:32 +0100 Subject: hrtimer: Reset hrtimer cpu base proper on CPU hotplug From: Thomas Gleixner <tglx(a)linutronix.de> commit d5421ea43d30701e03cadc56a38854c36a8b4433 upstream. The hrtimer interrupt code contains a hang detection and mitigation mechanism, which prevents that a long delayed hrtimer interrupt causes a continous retriggering of interrupts which prevent the system from making progress. If a hang is detected then the timer hardware is programmed with a certain delay into the future and a flag is set in the hrtimer cpu base which prevents newly enqueued timers from reprogramming the timer hardware prior to the chosen delay. The subsequent hrtimer interrupt after the delay clears the flag and resumes normal operation. If such a hang happens in the last hrtimer interrupt before a CPU is unplugged then the hang_detected flag is set and stays that way when the CPU is plugged in again. At that point the timer hardware is not armed and it cannot be armed because the hang_detected flag is still active, so nothing clears that flag. As a consequence the CPU does not receive hrtimer interrupts and no timers expire on that CPU which results in RCU stalls and other malfunctions. Clear the flag along with some other less critical members of the hrtimer cpu base to ensure starting from a clean state when a CPU is plugged in. Thanks to Paul, Sebastian and Anna-Maria for their help to get down to the root cause of that hard to reproduce heisenbug. Once understood it's trivial and certainly justifies a brown paperbag. Fixes: 41d2e4949377 ("hrtimer: Tune hrtimer_interrupt hang logic") Reported-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Sebastian Sewior <bigeasy(a)linutronix.de> Cc: Anna-Maria Gleixner <anna-maria(a)linutronix.de> Cc: stable(a)vger.kernel.org Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801261447590.2067@nanos [bigeasy: backport to v3.18, drop ->next_timer it was introduced later] Signed-off-by: Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- kernel/time/hrtimer.c | 2 ++ 1 file changed, 2 insertions(+) --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -612,6 +612,7 @@ static int hrtimer_reprogram(struct hrti static inline void hrtimer_init_hres(struct hrtimer_cpu_base *base) { base->expires_next.tv64 = KTIME_MAX; + base->hang_detected = 0; base->hres_active = 0; } @@ -1632,6 +1633,7 @@ static void init_hrtimers_cpu(int cpu) timerqueue_init_head(&cpu_base->clock_base[i].active); } + cpu_base->active_bases = 0; cpu_base->cpu = cpu; hrtimer_init_hres(cpu_base); } Patches currently in stable-queue which might be from tglx(a)linutronix.de are queue-3.18/futex-prevent-overflow-by-strengthen-input-validation.patch queue-3.18/x86-asm-32-make-sync_core-handle-missing-cpuid-on-all-32-bit-kernels.patch queue-3.18/x86-microcode-intel-extend-bdw-late-loading-further-with-llc-size-check.patch queue-3.18/hrtimer-reset-hrtimer-cpu-base-proper-on-cpu-hotplug.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "nfsd: auth: Fix gid sorting when rootsquash enabled" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled nfsd: auth: Fix gid sorting when rootsquash enabled to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: nfsd-auth-fix-gid-sorting-when-rootsquash-enabled.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 1995266727fa8143897e89b55f5d3c79aa828420 Mon Sep 17 00:00:00 2001 From: Ben Hutchings <ben.hutchings(a)codethink.co.uk> Date: Mon, 22 Jan 2018 20:11:06 +0000 Subject: nfsd: auth: Fix gid sorting when rootsquash enabled From: Ben Hutchings <ben.hutchings(a)codethink.co.uk> commit 1995266727fa8143897e89b55f5d3c79aa828420 upstream. Commit bdcf0a423ea1 ("kernel: make groups_sort calling a responsibility group_info allocators") appears to break nfsd rootsquash in a pretty major way. It adds a call to groups_sort() inside the loop that copies/squashes gids, which means the valid gids are sorted along with the following garbage. The net result is that the highest numbered valid gids are replaced with any lower-valued garbage gids, possibly including 0. We should sort only once, after filling in all the gids. Fixes: bdcf0a423ea1 ("kernel: make groups_sort calling a responsibility ...") Signed-off-by: Ben Hutchings <ben.hutchings(a)codethink.co.uk> Acked-by: J. Bruce Fields <bfields(a)redhat.com> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Wolfgang Walter <linux(a)stwm.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- fs/nfsd/auth.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/fs/nfsd/auth.c +++ b/fs/nfsd/auth.c @@ -59,10 +59,10 @@ int nfsd_setuser(struct svc_rqst *rqstp, gi->gid[i] = exp->ex_anon_gid; else gi->gid[i] = rqgi->gid[i]; - - /* Each thread allocates its own gi, no race */ - groups_sort(gi); } + + /* Each thread allocates its own gi, no race */ + groups_sort(gi); } else { gi = get_group_info(rqgi); } Patches currently in stable-queue which might be from ben.hutchings(a)codethink.co.uk are queue-4.9/vsyscall-fix-permissions-for-emulate-mode-with-kaiser-pti.patch queue-4.9/ipv6-fix-getsockopt-for-sockets-with-default-ipv6_autoflowlabel.patch queue-4.9/nfsd-auth-fix-gid-sorting-when-rootsquash-enabled.patch

7 years, 7 months

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[Linux-stable-mirror] NFS: regression in stable kernel 4.9.78 from 4.9.75

by Wolfgang Walter

Hello, after upgrading our nfs-server from 4.9.75 to 4.9.78 group permissions stop working (for clients). If you need group permissions to access a file or directory, sometimes access is granted, but rather often denied. Often access to the same object is denied within seconds after access was granted in an earlier access. user permissions work fine. Downgrading to 4.9.75 fixes the issue. We use kerberos. Regards, -- Wolfgang Walter Studentenwerk München Anstalt des öffentlichen Rechts

7 years, 7 months

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[Linux-stable-mirror] Patch "nfsd: auth: Fix gid sorting when rootsquash enabled" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled nfsd: auth: Fix gid sorting when rootsquash enabled to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: nfsd-auth-fix-gid-sorting-when-rootsquash-enabled.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 1995266727fa8143897e89b55f5d3c79aa828420 Mon Sep 17 00:00:00 2001 From: Ben Hutchings <ben.hutchings(a)codethink.co.uk> Date: Mon, 22 Jan 2018 20:11:06 +0000 Subject: nfsd: auth: Fix gid sorting when rootsquash enabled From: Ben Hutchings <ben.hutchings(a)codethink.co.uk> commit 1995266727fa8143897e89b55f5d3c79aa828420 upstream. Commit bdcf0a423ea1 ("kernel: make groups_sort calling a responsibility group_info allocators") appears to break nfsd rootsquash in a pretty major way. It adds a call to groups_sort() inside the loop that copies/squashes gids, which means the valid gids are sorted along with the following garbage. The net result is that the highest numbered valid gids are replaced with any lower-valued garbage gids, possibly including 0. We should sort only once, after filling in all the gids. Fixes: bdcf0a423ea1 ("kernel: make groups_sort calling a responsibility ...") Signed-off-by: Ben Hutchings <ben.hutchings(a)codethink.co.uk> Acked-by: J. Bruce Fields <bfields(a)redhat.com> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Wolfgang Walter <linux(a)stwm.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- fs/nfsd/auth.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/fs/nfsd/auth.c +++ b/fs/nfsd/auth.c @@ -60,9 +60,10 @@ int nfsd_setuser(struct svc_rqst *rqstp, else GROUP_AT(gi, i) = GROUP_AT(rqgi, i); - /* Each thread allocates its own gi, no race */ - groups_sort(gi); } + + /* Each thread allocates its own gi, no race */ + groups_sort(gi); } else { gi = get_group_info(rqgi); } Patches currently in stable-queue which might be from ben.hutchings(a)codethink.co.uk are queue-4.4/vsyscall-fix-permissions-for-emulate-mode-with-kaiser-pti.patch queue-4.4/ipv6-fix-getsockopt-for-sockets-with-default-ipv6_autoflowlabel.patch queue-4.4/x86-microcode-intel-fix-bdw-late-loading-revision-check.patch queue-4.4/nfsd-auth-fix-gid-sorting-when-rootsquash-enabled.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "nfsd: auth: Fix gid sorting when rootsquash enabled" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled nfsd: auth: Fix gid sorting when rootsquash enabled to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: nfsd-auth-fix-gid-sorting-when-rootsquash-enabled.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 1995266727fa8143897e89b55f5d3c79aa828420 Mon Sep 17 00:00:00 2001 From: Ben Hutchings <ben.hutchings(a)codethink.co.uk> Date: Mon, 22 Jan 2018 20:11:06 +0000 Subject: nfsd: auth: Fix gid sorting when rootsquash enabled From: Ben Hutchings <ben.hutchings(a)codethink.co.uk> commit 1995266727fa8143897e89b55f5d3c79aa828420 upstream. Commit bdcf0a423ea1 ("kernel: make groups_sort calling a responsibility group_info allocators") appears to break nfsd rootsquash in a pretty major way. It adds a call to groups_sort() inside the loop that copies/squashes gids, which means the valid gids are sorted along with the following garbage. The net result is that the highest numbered valid gids are replaced with any lower-valued garbage gids, possibly including 0. We should sort only once, after filling in all the gids. Fixes: bdcf0a423ea1 ("kernel: make groups_sort calling a responsibility ...") Signed-off-by: Ben Hutchings <ben.hutchings(a)codethink.co.uk> Acked-by: J. Bruce Fields <bfields(a)redhat.com> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Wolfgang Walter <linux(a)stwm.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- fs/nfsd/auth.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/fs/nfsd/auth.c +++ b/fs/nfsd/auth.c @@ -60,10 +60,10 @@ int nfsd_setuser(struct svc_rqst *rqstp, gi->gid[i] = exp->ex_anon_gid; else gi->gid[i] = rqgi->gid[i]; - - /* Each thread allocates its own gi, no race */ - groups_sort(gi); } + + /* Each thread allocates its own gi, no race */ + groups_sort(gi); } else { gi = get_group_info(rqgi); } Patches currently in stable-queue which might be from ben.hutchings(a)codethink.co.uk are queue-4.14/ipv6-fix-getsockopt-for-sockets-with-default-ipv6_autoflowlabel.patch queue-4.14/nfsd-auth-fix-gid-sorting-when-rootsquash-enabled.patch

7 years, 7 months

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[Linux-stable-mirror] v4.15 build: 0 failures 0 warnings (v4.15)

by Build bot for Mark Brown

Tree/Branch: v4.15 Git describe: v4.15 Commit: d8a5b80568 Linux 4.15 Build Time: 112 min 21 sec Passed: 10 / 10 (100.00 %) Failed: 0 / 10 ( 0.00 %) Errors: 0 Warnings: 0 Section Mismatches: 0 ------------------------------------------------------------------------------- defconfigs with issues (other than build errors): ------------------------------------------------------------------------------- =============================================================================== Detailed per-defconfig build reports below: ------------------------------------------------------------------------------- Passed with no errors, warnings or mismatches: arm64-allnoconfig arm64-allmodconfig arm-multi_v5_defconfig arm-multi_v7_defconfig x86_64-defconfig arm-allmodconfig arm-allnoconfig x86_64-allnoconfig arm-multi_v4t_defconfig arm64-defconfig close failed in file object destructor: sys.excepthook is missing lost sys.stderr

7 years, 7 months

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[Linux-stable-mirror] [git:media_tree/master] media: cxusb, dib0700: ignore XC2028_I2C_FLUSH

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: cxusb, dib0700: ignore XC2028_I2C_FLUSH Author: Mauro Carvalho Chehab <mchehab(a)osg.samsung.com> Date: Wed Jan 24 06:01:57 2018 -0500 The XC2028_I2C_FLUSH only needs to be implemented on a few devices. Others can safely ignore it. That prevents filling the dmesg with lots of messages like: dib0700: stk7700ph_xc3028_callback: unknown command 2, arg 0 Cc: stable(a)vger.kernel.org Fixes: 4d37ece757a8 ("[media] tuner/xc2028: Add I2C flush callback") Reported-by: Enrico Mioso <mrkiko.rs(a)gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab(a)osg.samsung.com> drivers/media/usb/dvb-usb/cxusb.c | 2 ++ drivers/media/usb/dvb-usb/dib0700_devices.c | 1 + 2 files changed, 3 insertions(+) --- diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c index 7109fc7ab74d..2abd15c6df81 100644 --- a/drivers/media/usb/dvb-usb/cxusb.c +++ b/drivers/media/usb/dvb-usb/cxusb.c @@ -679,6 +679,8 @@ static int dvico_bluebird_xc2028_callback(void *ptr, int component, case XC2028_RESET_CLK: deb_info("%s: XC2028_RESET_CLK %d\n", __func__, arg); break; + case XC2028_I2C_FLUSH: + break; default: deb_info("%s: unknown command %d, arg %d\n", __func__, command, arg); diff --git a/drivers/media/usb/dvb-usb/dib0700_devices.c b/drivers/media/usb/dvb-usb/dib0700_devices.c index 470836a274dd..3d99e141d566 100644 --- a/drivers/media/usb/dvb-usb/dib0700_devices.c +++ b/drivers/media/usb/dvb-usb/dib0700_devices.c @@ -433,6 +433,7 @@ static int stk7700ph_xc3028_callback(void *ptr, int component, state->dib7000p_ops.set_gpio(adap->fe_adap[0].fe, 8, 0, 1); break; case XC2028_RESET_CLK: + case XC2028_I2C_FLUSH: break; default: err("%s: unknown command %d, arg %d\n", __func__,

7 years, 7 months

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[Linux-stable-mirror] [git:media_tree/master] media: ts2020: avoid integer overflows on 32 bit machines

by Mauro Carvalho Chehab

This is an automatic generated email to let you know that the following patch were queued: Subject: media: ts2020: avoid integer overflows on 32 bit machines Author: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> Date: Wed Jan 10 07:20:39 2018 -0500 Before this patch, when compiled for arm32, the signal strength were reported as: Lock (0x1f) Signal= 4294908.66dBm C/N= 12.79dB Because of a 32 bit integer overflow. After it, it is properly reported as: Lock (0x1f) Signal= -58.64dBm C/N= 12.79dB Cc: stable(a)vger.kernel.org Fixes: 0f91c9d6bab9 ("[media] TS2020: Calculate tuner gain correctly") Signed-off-by: Mauro Carvalho Chehab <mchehab(a)s-opensource.com> drivers/media/dvb-frontends/ts2020.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- diff --git a/drivers/media/dvb-frontends/ts2020.c b/drivers/media/dvb-frontends/ts2020.c index 07f1726a5774..c55882a8da06 100644 --- a/drivers/media/dvb-frontends/ts2020.c +++ b/drivers/media/dvb-frontends/ts2020.c @@ -368,7 +368,7 @@ static int ts2020_read_tuner_gain(struct dvb_frontend *fe, unsigned v_agc, gain2 = clamp_t(long, gain2, 0, 13); v_agc = clamp_t(long, v_agc, 400, 1100); - *_gain = -(gain1 * 2330 + + *_gain = -((__s64)gain1 * 2330 + gain2 * 3500 + v_agc * 24 / 10 * 10 + 10000); @@ -386,7 +386,7 @@ static int ts2020_read_tuner_gain(struct dvb_frontend *fe, unsigned v_agc, gain3 = clamp_t(long, gain3, 0, 6); v_agc = clamp_t(long, v_agc, 600, 1600); - *_gain = -(gain1 * 2650 + + *_gain = -((__s64)gain1 * 2650 + gain2 * 3380 + gain3 * 2850 + v_agc * 176 / 100 * 10 -

7 years, 7 months

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[Linux-stable-mirror] [PATCH stable 4.9 0/8] BPF stable patches

by Daniel Borkmann

All for 4.9 backported and tested. Thanks! Alexei Starovoitov (3): bpf: fix bpf_tail_call() x64 JIT bpf: introduce BPF_JIT_ALWAYS_ON config bpf: fix 32-bit divide by zero Daniel Borkmann (3): bpf: arsh is not supported in 32 bit alu thus reject it bpf: avoid false sharing of map refcount with max_entries bpf: reject stores into ctx via st and xadd Eric Dumazet (2): x86: bpf_jit: small optimization in emit_bpf_tail_call() bpf: fix divides by zero arch/x86/net/bpf_jit_comp.c | 13 ++++++------- include/linux/bpf.h | 16 ++++++++++++---- init/Kconfig | 7 +++++++ kernel/bpf/core.c | 24 +++++++++++++++++++++--- kernel/bpf/verifier.c | 42 ++++++++++++++++++++++++++++++++++++++++++ lib/test_bpf.c | 11 +++++++---- net/core/filter.c | 10 ++++++---- net/core/sysctl_net_core.c | 6 ++++++ net/socket.c | 9 +++++++++ 9 files changed, 116 insertions(+), 22 deletions(-) -- 2.9.5

7 years, 7 months

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[Linux-stable-mirror] Patch "cpufreq: governor: Ensure sufficiently large sampling intervals" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled cpufreq: governor: Ensure sufficiently large sampling intervals to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: cpufreq-governor-ensure-sufficiently-large-sampling-intervals.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 56026645e2b6f11ede34a5e6ab69d3eb56f9c8fc Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" <rafael.j.wysocki(a)intel.com> Date: Mon, 18 Dec 2017 02:15:32 +0100 Subject: cpufreq: governor: Ensure sufficiently large sampling intervals From: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> commit 56026645e2b6f11ede34a5e6ab69d3eb56f9c8fc upstream. After commit aa7519af450d (cpufreq: Use transition_delay_us for legacy governors as well) the sampling_rate field of struct dbs_data may be less than the tick period which causes dbs_update() to produce incorrect results, so make the code ensure that the value of that field will always be sufficiently large. Fixes: aa7519af450d (cpufreq: Use transition_delay_us for legacy governors as well) Reported-by: Andy Tang <andy.tang(a)nxp.com> Reported-by: Doug Smythies <dsmythies(a)telus.net> Tested-by: Andy Tang <andy.tang(a)nxp.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Acked-by: Viresh Kumar <viresh.kumar(a)linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/cpufreq/cpufreq_governor.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) --- a/drivers/cpufreq/cpufreq_governor.c +++ b/drivers/cpufreq/cpufreq_governor.c @@ -22,6 +22,8 @@ #include "cpufreq_governor.h" +#define CPUFREQ_DBS_MIN_SAMPLING_INTERVAL (2 * TICK_NSEC / NSEC_PER_USEC) + static DEFINE_PER_CPU(struct cpu_dbs_info, cpu_dbs); static DEFINE_MUTEX(gov_dbs_data_mutex); @@ -47,11 +49,15 @@ ssize_t store_sampling_rate(struct gov_a { struct dbs_data *dbs_data = to_dbs_data(attr_set); struct policy_dbs_info *policy_dbs; + unsigned int sampling_interval; int ret; - ret = sscanf(buf, "%u", &dbs_data->sampling_rate); - if (ret != 1) + + ret = sscanf(buf, "%u", &sampling_interval); + if (ret != 1 || sampling_interval < CPUFREQ_DBS_MIN_SAMPLING_INTERVAL) return -EINVAL; + dbs_data->sampling_rate = sampling_interval; + /* * We are operating under dbs_data->mutex and so the list and its * entries can't be freed concurrently. @@ -430,7 +436,14 @@ int cpufreq_dbs_governor_init(struct cpu if (ret) goto free_policy_dbs_info; - dbs_data->sampling_rate = cpufreq_policy_transition_delay_us(policy); + /* + * The sampling interval should not be less than the transition latency + * of the CPU and it also cannot be too small for dbs_update() to work + * correctly. + */ + dbs_data->sampling_rate = max_t(unsigned int, + CPUFREQ_DBS_MIN_SAMPLING_INTERVAL, + cpufreq_policy_transition_delay_us(policy)); if (!have_governor_per_policy()) gov->gdbs_data = dbs_data; Patches currently in stable-queue which might be from rafael.j.wysocki(a)intel.com are queue-4.14/cpufreq-governor-ensure-sufficiently-large-sampling-intervals.patch

7 years, 7 months

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Re: [Linux-stable-mirror] [PATCH v3 bpf] bpf: introduce BPF_JIT_ALWAYS_ON config

by Daniel Borkmann

On 01/24/2018 11:07 AM, David Woodhouse wrote: > On Tue, 2018-01-09 at 22:39 +0100, Daniel Borkmann wrote: >> On 01/09/2018 07:04 PM, Alexei Starovoitov wrote: >>> >>> The BPF interpreter has been used as part of the spectre 2 attack CVE-2017-5715. >>> >>> A quote from goolge project zero blog: >>> "At this point, it would normally be necessary to locate gadgets in >>> the host kernel code that can be used to actually leak data by reading >>> from an attacker-controlled location, shifting and masking the result >>> appropriately and then using the result of that as offset to an >>> attacker-controlled address for a load. But piecing gadgets together >>> and figuring out which ones work in a speculation context seems annoying. >>> So instead, we decided to use the eBPF interpreter, which is built into >>> the host kernel - while there is no legitimate way to invoke it from inside >>> a VM, the presence of the code in the host kernel's text section is sufficient >>> to make it usable for the attack, just like with ordinary ROP gadgets." >>> >>> To make attacker job harder introduce BPF_JIT_ALWAYS_ON config >>> option that removes interpreter from the kernel in favor of JIT-only mode. >>> So far eBPF JIT is supported by: >>> x64, arm64, arm32, sparc64, s390, powerpc64, mips64 >>> >>> The start of JITed program is randomized and code page is marked as read-only. >>> In addition "constant blinding" can be turned on with net.core.bpf_jit_harden >>> >>> v2->v3: >>> - move __bpf_prog_ret0 under ifdef (Daniel) >>> >>> v1->v2: >>> - fix init order, test_bpf and cBPF (Daniel's feedback) >>> - fix offloaded bpf (Jakub's feedback) >>> - add 'return 0' dummy in case something can invoke prog->bpf_func >>> - retarget bpf tree. For bpf-next the patch would need one extra hunk. >>> It will be sent when the trees are merged back to net-next >>> >>> Considered doing: >>> int bpf_jit_enable __read_mostly = BPF_EBPF_JIT_DEFAULT; >>> but it seems better to land the patch as-is and in bpf-next remove >>> bpf_jit_enable global variable from all JITs, consolidate in one place >>> and remove this jit_init() function. >>> >>> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> >> >> Applied to bpf tree, thanks Alexei! > > For stable too? Yes, this will go into stable as well; batch of backports will come Thurs/Fri.

7 years, 7 months

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[Linux-stable-mirror] [PATCH stable 4.14 0/6] BPF stable patches

by Daniel Borkmann

All for 4.14 backported and tested. Thanks! Alexei Starovoitov (2): bpf: introduce BPF_JIT_ALWAYS_ON config bpf: fix 32-bit divide by zero Daniel Borkmann (3): bpf: avoid false sharing of map refcount with max_entries bpf: reject stores into ctx via st and xadd bpf, arm64: fix stack_depth tracking in combination with tail calls Eric Dumazet (1): bpf: fix divides by zero arch/arm64/net/bpf_jit_comp.c | 20 +++++++++------- include/linux/bpf.h | 21 ++++++++++++---- init/Kconfig | 7 ++++++ kernel/bpf/core.c | 23 ++++++++++++++++-- kernel/bpf/verifier.c | 37 +++++++++++++++++++++++++++++ lib/test_bpf.c | 11 +++++---- net/core/filter.c | 10 ++++---- net/core/sysctl_net_core.c | 6 +++++ net/socket.c | 9 +++++++ tools/testing/selftests/bpf/test_verifier.c | 29 ++++++++++++++++++++-- 10 files changed, 147 insertions(+), 26 deletions(-) -- 2.9.5

7 years, 7 months

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[Linux-stable-mirror] Patch "vmxnet3: repair memory leak" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled vmxnet3: repair memory leak to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: vmxnet3-repair-memory-leak.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 11:15:06 CET 2018 From: Neil Horman <nhorman(a)tuxdriver.com> Date: Mon, 22 Jan 2018 16:06:37 -0500 Subject: vmxnet3: repair memory leak From: Neil Horman <nhorman(a)tuxdriver.com> [ Upstream commit 848b159835ddef99cc4193083f7e786c3992f580 ] with the introduction of commit b0eb57cb97e7837ebb746404c2c58c6f536f23fa, it appears that rq->buf_info is improperly handled. While it is heap allocated when an rx queue is setup, and freed when torn down, an old line of code in vmxnet3_rq_destroy was not properly removed, leading to rq->buf_info[0] being set to NULL prior to its being freed, causing a memory leak, which eventually exhausts the system on repeated create/destroy operations (for example, when the mtu of a vmxnet3 interface is changed frequently. Fix is pretty straight forward, just move the NULL set to after the free. Tested by myself with successful results Applies to net, and should likely be queued for stable, please Signed-off-by: Neil Horman <nhorman(a)tuxdriver.com> Reported-By: boyang(a)redhat.com CC: boyang(a)redhat.com CC: Shrikrishna Khare <skhare(a)vmware.com> CC: "VMware, Inc." <pv-drivers(a)vmware.com> CC: David S. Miller <davem(a)davemloft.net> Acked-by: Shrikrishna Khare <skhare(a)vmware.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/vmxnet3/vmxnet3_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -1420,7 +1420,6 @@ static void vmxnet3_rq_destroy(struct vm rq->rx_ring[i].basePA); rq->rx_ring[i].base = NULL; } - rq->buf_info[i] = NULL; } if (rq->comp_ring.base) { @@ -1435,6 +1434,7 @@ static void vmxnet3_rq_destroy(struct vm (rq->rx_ring[0].size + rq->rx_ring[1].size); dma_free_coherent(&adapter->pdev->dev, sz, rq->buf_info[0], rq->buf_info_pa); + rq->buf_info[0] = rq->buf_info[1] = NULL; } } Patches currently in stable-queue which might be from nhorman(a)tuxdriver.com are queue-3.18/sctp-do-not-allow-the-v4-socket-to-bind-a-v4mapped-v6-address.patch queue-3.18/vmxnet3-repair-memory-leak.patch queue-3.18/sctp-return-error-if-the-asoc-has-been-peeled-off-in-sctp_wait_for_sndbuf.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "tcp: __tcp_hdrlen() helper" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled tcp: __tcp_hdrlen() helper to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: tcp-__tcp_hdrlen-helper.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From d9b3fca27385eafe61c3ca6feab6cb1e7dc77482 Mon Sep 17 00:00:00 2001 From: Craig Gallek <kraig(a)google.com> Date: Wed, 10 Feb 2016 11:50:37 -0500 Subject: tcp: __tcp_hdrlen() helper From: Craig Gallek <kraig(a)google.com> commit d9b3fca27385eafe61c3ca6feab6cb1e7dc77482 upstream. tcp_hdrlen is wasteful if you already have a pointer to struct tcphdr. This splits the size calculation into a helper function that can be used if a struct tcphdr is already available. Signed-off-by: Craig Gallek <kraig(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/linux/tcp.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -29,9 +29,14 @@ static inline struct tcphdr *tcp_hdr(con return (struct tcphdr *)skb_transport_header(skb); } +static inline unsigned int __tcp_hdrlen(const struct tcphdr *th) +{ + return th->doff * 4; +} + static inline unsigned int tcp_hdrlen(const struct sk_buff *skb) { - return tcp_hdr(skb)->doff * 4; + return __tcp_hdrlen(tcp_hdr(skb)); } static inline struct tcphdr *inner_tcp_hdr(const struct sk_buff *skb) Patches currently in stable-queue which might be from kraig(a)google.com are queue-3.18/tcp-__tcp_hdrlen-helper.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: sctp-return-error-if-the-asoc-has-been-peeled-off-in-sctp_wait_for_sndbuf.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 11:15:06 CET 2018 From: Xin Long <lucien.xin(a)gmail.com> Date: Mon, 15 Jan 2018 17:01:36 +0800 Subject: sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf From: Xin Long <lucien.xin(a)gmail.com> [ Upstream commit a0ff660058b88d12625a783ce9e5c1371c87951f ] After commit cea0cc80a677 ("sctp: use the right sk after waking up from wait_buf sleep"), it may change to lock another sk if the asoc has been peeled off in sctp_wait_for_sndbuf. However, the asoc's new sk could be already closed elsewhere, as it's in the sendmsg context of the old sk that can't avoid the new sk's closing. If the sk's last one refcnt is held by this asoc, later on after putting this asoc, the new sk will be freed, while under it's own lock. This patch is to revert that commit, but fix the old issue by returning error under the old sk's lock. Fixes: cea0cc80a677 ("sctp: use the right sk after waking up from wait_buf sleep") Reported-by: syzbot+ac6ea7baa4432811eb50(a)syzkaller.appspotmail.com Signed-off-by: Xin Long <lucien.xin(a)gmail.com> Acked-by: Neil Horman <nhorman(a)tuxdriver.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sctp/socket.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -83,7 +83,7 @@ static int sctp_writeable(struct sock *sk); static void sctp_wfree(struct sk_buff *skb); static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p, - size_t msg_len, struct sock **orig_sk); + size_t msg_len); static int sctp_wait_for_packet(struct sock *sk, int *err, long *timeo_p); static int sctp_wait_for_connect(struct sctp_association *, long *timeo_p); static int sctp_wait_for_accept(struct sock *sk, long timeo); @@ -1948,7 +1948,7 @@ static int sctp_sendmsg(struct kiocb *io timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT); if (!sctp_wspace(asoc)) { /* sk can be changed by peel off when waiting for buf. */ - err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len, &sk); + err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len); if (err) { if (err == -ESRCH) { /* asoc is already dead. */ @@ -6981,12 +6981,12 @@ void sctp_sock_rfree(struct sk_buff *skb /* Helper function to wait for space in the sndbuf. */ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p, - size_t msg_len, struct sock **orig_sk) + size_t msg_len) { struct sock *sk = asoc->base.sk; - int err = 0; long current_timeo = *timeo_p; DEFINE_WAIT(wait); + int err = 0; pr_debug("%s: asoc:%p, timeo:%ld, msg_len:%zu\n", __func__, asoc, *timeo_p, msg_len); @@ -7015,17 +7015,13 @@ static int sctp_wait_for_sndbuf(struct s release_sock(sk); current_timeo = schedule_timeout(current_timeo); lock_sock(sk); - if (sk != asoc->base.sk) { - release_sock(sk); - sk = asoc->base.sk; - lock_sock(sk); - } + if (sk != asoc->base.sk) + goto do_error; *timeo_p = current_timeo; } out: - *orig_sk = sk; finish_wait(&asoc->wait, &wait); /* Release the association's refcnt. */ Patches currently in stable-queue which might be from lucien.xin(a)gmail.com are queue-3.18/sctp-do-not-allow-the-v4-socket-to-bind-a-v4mapped-v6-address.patch queue-3.18/pppoe-take-needed_headroom-of-lower-device-into-account-on-xmit.patch queue-3.18/sctp-return-error-if-the-asoc-has-been-peeled-off-in-sctp_wait_for_sndbuf.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "sctp: do not allow the v4 socket to bind a v4mapped v6 address" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled sctp: do not allow the v4 socket to bind a v4mapped v6 address to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: sctp-do-not-allow-the-v4-socket-to-bind-a-v4mapped-v6-address.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 11:15:06 CET 2018 From: Xin Long <lucien.xin(a)gmail.com> Date: Mon, 15 Jan 2018 17:02:00 +0800 Subject: sctp: do not allow the v4 socket to bind a v4mapped v6 address From: Xin Long <lucien.xin(a)gmail.com> [ Upstream commit c5006b8aa74599ce19104b31d322d2ea9ff887cc ] The check in sctp_sockaddr_af is not robust enough to forbid binding a v4mapped v6 addr on a v4 socket. The worse thing is that v4 socket's bind_verify would not convert this v4mapped v6 addr to a v4 addr. syzbot even reported a crash as the v4 socket bound a v6 addr. This patch is to fix it by doing the common sa.sa_family check first, then AF_INET check for v4mapped v6 addrs. Fixes: 7dab83de50c7 ("sctp: Support ipv6only AF_INET6 sockets.") Reported-by: syzbot+7b7b518b1228d2743963(a)syzkaller.appspotmail.com Acked-by: Neil Horman <nhorman(a)tuxdriver.com> Signed-off-by: Xin Long <lucien.xin(a)gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sctp/socket.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -333,16 +333,14 @@ static struct sctp_af *sctp_sockaddr_af( if (len < sizeof (struct sockaddr)) return NULL; + if (!opt->pf->af_supported(addr->sa.sa_family, opt)) + return NULL; + /* V4 mapped address are really of AF_INET family */ if (addr->sa.sa_family == AF_INET6 && - ipv6_addr_v4mapped(&addr->v6.sin6_addr)) { - if (!opt->pf->af_supported(AF_INET, opt)) - return NULL; - } else { - /* Does this PF support this AF? */ - if (!opt->pf->af_supported(addr->sa.sa_family, opt)) - return NULL; - } + ipv6_addr_v4mapped(&addr->v6.sin6_addr) && + !opt->pf->af_supported(AF_INET, opt)) + return NULL; /* If we get this far, af is valid. */ af = sctp_get_af_specific(addr->sa.sa_family); Patches currently in stable-queue which might be from lucien.xin(a)gmail.com are queue-3.18/sctp-do-not-allow-the-v4-socket-to-bind-a-v4mapped-v6-address.patch queue-3.18/pppoe-take-needed_headroom-of-lower-device-into-account-on-xmit.patch queue-3.18/sctp-return-error-if-the-asoc-has-been-peeled-off-in-sctp_wait_for_sndbuf.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "pppoe: take ->needed_headroom of lower device into account on xmit" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled pppoe: take ->needed_headroom of lower device into account on xmit to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: pppoe-take-needed_headroom-of-lower-device-into-account-on-xmit.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 11:15:06 CET 2018 From: Guillaume Nault <g.nault(a)alphalink.fr> Date: Mon, 22 Jan 2018 18:06:37 +0100 Subject: pppoe: take ->needed_headroom of lower device into account on xmit From: Guillaume Nault <g.nault(a)alphalink.fr> [ Upstream commit 02612bb05e51df8489db5e94d0cf8d1c81f87b0c ] In pppoe_sendmsg(), reserving dev->hard_header_len bytes of headroom was probably fine before the introduction of ->needed_headroom in commit f5184d267c1a ("net: Allow netdevices to specify needed head/tailroom"). But now, virtual devices typically advertise the size of their overhead in dev->needed_headroom, so we must also take it into account in skb_reserve(). Allocation size of skb is also updated to take dev->needed_tailroom into account and replace the arbitrary 32 bytes with the real size of a PPPoE header. This issue was discovered by syzbot, who connected a pppoe socket to a gre device which had dev->header_ops->create == ipgre_header and dev->hard_header_len == 0. Therefore, PPPoE didn't reserve any headroom, and dev_hard_header() crashed when ipgre_header() tried to prepend its header to skb->data. skbuff: skb_under_panic: text:000000001d390b3a len:31 put:24 head:00000000d8ed776f data:000000008150e823 tail:0x7 end:0xc0 dev:gre0 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:104! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 3670 Comm: syzkaller801466 Not tainted 4.15.0-rc7-next-20180115+ #97 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:skb_panic+0x162/0x1f0 net/core/skbuff.c:100 RSP: 0018:ffff8801d9bd7840 EFLAGS: 00010282 RAX: 0000000000000083 RBX: ffff8801d4f083c0 RCX: 0000000000000000 RDX: 0000000000000083 RSI: 1ffff1003b37ae92 RDI: ffffed003b37aefc RBP: ffff8801d9bd78a8 R08: 1ffff1003b37ae8a R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff86200de0 R13: ffffffff84a981ad R14: 0000000000000018 R15: ffff8801d2d34180 FS: 00000000019c4880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000208bc000 CR3: 00000001d9111001 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_under_panic net/core/skbuff.c:114 [inline] skb_push+0xce/0xf0 net/core/skbuff.c:1714 ipgre_header+0x6d/0x4e0 net/ipv4/ip_gre.c:879 dev_hard_header include/linux/netdevice.h:2723 [inline] pppoe_sendmsg+0x58e/0x8b0 drivers/net/ppp/pppoe.c:890 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 sock_write_iter+0x31a/0x5d0 net/socket.c:909 call_write_iter include/linux/fs.h:1775 [inline] do_iter_readv_writev+0x525/0x7f0 fs/read_write.c:653 do_iter_write+0x154/0x540 fs/read_write.c:932 vfs_writev+0x18a/0x340 fs/read_write.c:977 do_writev+0xfc/0x2a0 fs/read_write.c:1012 SYSC_writev fs/read_write.c:1085 [inline] SyS_writev+0x27/0x30 fs/read_write.c:1082 entry_SYSCALL_64_fastpath+0x29/0xa0 Admittedly PPPoE shouldn't be allowed to run on non Ethernet-like interfaces, but reserving space for ->needed_headroom is a more fundamental issue that needs to be addressed first. Same problem exists for __pppoe_xmit(), which also needs to take dev->needed_headroom into account in skb_cow_head(). Fixes: f5184d267c1a ("net: Allow netdevices to specify needed head/tailroom") Reported-by: syzbot+ed0838d0fa4c4f2b528e20286e6dc63effc7c14d(a)syzkaller.appspotmail.com Signed-off-by: Guillaume Nault <g.nault(a)alphalink.fr> Reviewed-by: Xin Long <lucien.xin(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ppp/pppoe.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) --- a/drivers/net/ppp/pppoe.c +++ b/drivers/net/ppp/pppoe.c @@ -830,6 +830,7 @@ static int pppoe_sendmsg(struct kiocb *i struct pppoe_hdr *ph; struct net_device *dev; char *start; + int hlen; lock_sock(sk); if (sock_flag(sk, SOCK_DEAD) || !(sk->sk_state & PPPOX_CONNECTED)) { @@ -848,16 +849,16 @@ static int pppoe_sendmsg(struct kiocb *i if (total_len > (dev->mtu + dev->hard_header_len)) goto end; - - skb = sock_wmalloc(sk, total_len + dev->hard_header_len + 32, - 0, GFP_KERNEL); + hlen = LL_RESERVED_SPACE(dev); + skb = sock_wmalloc(sk, hlen + sizeof(*ph) + total_len + + dev->needed_tailroom, 0, GFP_KERNEL); if (!skb) { error = -ENOMEM; goto end; } /* Reserve space for headers. */ - skb_reserve(skb, dev->hard_header_len); + skb_reserve(skb, hlen); skb_reset_network_header(skb); skb->dev = dev; @@ -918,7 +919,7 @@ static int __pppoe_xmit(struct sock *sk, /* Copy the data if there is no space for the header or if it's * read-only. */ - if (skb_cow_head(skb, sizeof(*ph) + dev->hard_header_len)) + if (skb_cow_head(skb, LL_RESERVED_SPACE(dev) + sizeof(*ph))) goto abort; __skb_push(skb, sizeof(*ph)); Patches currently in stable-queue which might be from g.nault(a)alphalink.fr are queue-3.18/pppoe-take-needed_headroom-of-lower-device-into-account-on-xmit.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "net: tcp: close sock if net namespace is exiting" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: tcp: close sock if net namespace is exiting to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-tcp-close-sock-if-net-namespace-is-exiting.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Dan Streetman <ddstreet(a)ieee.org> Date: Thu, 18 Jan 2018 16:14:26 -0500 Subject: net: tcp: close sock if net namespace is exiting From: Dan Streetman <ddstreet(a)ieee.org> [ Upstream commit 4ee806d51176ba7b8ff1efd81f271d7252e03a1d ] When a tcp socket is closed, if it detects that its net namespace is exiting, close immediately and do not wait for FIN sequence. For normal sockets, a reference is taken to their net namespace, so it will never exit while the socket is open. However, kernel sockets do not take a reference to their net namespace, so it may begin exiting while the kernel socket is still open. In this case if the kernel socket is a tcp socket, it will stay open trying to complete its close sequence. The sock's dst(s) hold a reference to their interface, which are all transferred to the namespace's loopback interface when the real interfaces are taken down. When the namespace tries to take down its loopback interface, it hangs waiting for all references to the loopback interface to release, which results in messages like: unregister_netdevice: waiting for lo to become free. Usage count = 1 These messages continue until the socket finally times out and closes. Since the net namespace cleanup holds the net_mutex while calling its registered pernet callbacks, any new net namespace initialization is blocked until the current net namespace finishes exiting. After this change, the tcp socket notices the exiting net namespace, and closes immediately, releasing its dst(s) and their reference to the loopback interface, which lets the net namespace continue exiting. Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1711407 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=97811 Signed-off-by: Dan Streetman <ddstreet(a)canonical.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/net/net_namespace.h | 10 ++++++++++ net/ipv4/tcp.c | 3 +++ net/ipv4/tcp_timer.c | 15 +++++++++++++++ 3 files changed, 28 insertions(+) --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -200,6 +200,11 @@ int net_eq(const struct net *net1, const return net1 == net2; } +static inline int check_net(const struct net *net) +{ + return atomic_read(&net->count) != 0; +} + void net_drop_ns(void *); #else @@ -223,6 +228,11 @@ int net_eq(const struct net *net1, const { return 1; } + +static inline int check_net(const struct net *net) +{ + return 1; +} #define net_drop_ns NULL #endif --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2182,6 +2182,9 @@ adjudge_to_death: tcp_send_active_reset(sk, GFP_ATOMIC); NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPABORTONMEMORY); + } else if (!check_net(sock_net(sk))) { + /* Not possible to send reset; just close */ + tcp_set_state(sk, TCP_CLOSE); } } --- a/net/ipv4/tcp_timer.c +++ b/net/ipv4/tcp_timer.c @@ -46,11 +46,19 @@ static void tcp_write_err(struct sock *s * to prevent DoS attacks. It is called when a retransmission timeout * or zero probe timeout occurs on orphaned socket. * + * Also close if our net namespace is exiting; in that case there is no + * hope of ever communicating again since all netns interfaces are already + * down (or about to be down), and we need to release our dst references, + * which have been moved to the netns loopback interface, so the namespace + * can finish exiting. This condition is only possible if we are a kernel + * socket, as those do not hold references to the namespace. + * * Criteria is still not confirmed experimentally and may change. * We kill the socket, if: * 1. If number of orphaned sockets exceeds an administratively configured * limit. * 2. If we have strong memory pressure. + * 3. If our net namespace is exiting. */ static int tcp_out_of_resources(struct sock *sk, bool do_reset) { @@ -79,6 +87,13 @@ static int tcp_out_of_resources(struct s NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPABORTONMEMORY); return 1; } + + if (!check_net(sock_net(sk))) { + /* Not possible to send reset; just close */ + tcp_done(sk); + return 1; + } + return 0; } Patches currently in stable-queue which might be from ddstreet(a)ieee.org are queue-3.18/net-tcp-close-sock-if-net-namespace-is-exiting.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "net: qdisc_pkt_len_init() should be more robust" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: qdisc_pkt_len_init() should be more robust to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-qdisc_pkt_len_init-should-be-more-robust.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 11:15:06 CET 2018 From: Eric Dumazet <edumazet(a)google.com> Date: Thu, 18 Jan 2018 19:59:19 -0800 Subject: net: qdisc_pkt_len_init() should be more robust From: Eric Dumazet <edumazet(a)google.com> [ Upstream commit 7c68d1a6b4db9012790af7ac0f0fdc0d2083422a ] Without proper validation of DODGY packets, we might very well feed qdisc_pkt_len_init() with invalid GSO packets. tcp_hdrlen() might access out-of-bound data, so let's use skb_header_pointer() and proper checks. Whole story is described in commit d0c081b49137 ("flow_dissector: properly cap thoff field") We have the goal of validating DODGY packets earlier in the stack, so we might very well revert this fix in the future. Signed-off-by: Eric Dumazet <edumazet(a)google.com> Cc: Willem de Bruijn <willemb(a)google.com> Cc: Jason Wang <jasowang(a)redhat.com> Reported-by: syzbot+9da69ebac7dddd804552(a)syzkaller.appspotmail.com Acked-by: Jason Wang <jasowang(a)redhat.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/core/dev.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2772,10 +2772,21 @@ static void qdisc_pkt_len_init(struct sk hdr_len = skb_transport_header(skb) - skb_mac_header(skb); /* + transport layer */ - if (likely(shinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))) - hdr_len += tcp_hdrlen(skb); - else - hdr_len += sizeof(struct udphdr); + if (likely(shinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))) { + const struct tcphdr *th; + struct tcphdr _tcphdr; + + th = skb_header_pointer(skb, skb_transport_offset(skb), + sizeof(_tcphdr), &_tcphdr); + if (likely(th)) + hdr_len += __tcp_hdrlen(th); + } else { + struct udphdr _udphdr; + + if (skb_header_pointer(skb, skb_transport_offset(skb), + sizeof(_udphdr), &_udphdr)) + hdr_len += sizeof(struct udphdr); + } if (shinfo->gso_type & SKB_GSO_DODGY) gso_segs = DIV_ROUND_UP(skb->len - hdr_len, Patches currently in stable-queue which might be from edumazet(a)google.com are queue-3.18/ipv6-fix-udpv6-sendmsg-crash-caused-by-too-small-mtu.patch queue-3.18/dccp-don-t-restart-ccid2_hc_tx_rto_expire-if-sk-in-closed-state.patch queue-3.18/netfilter-restart-search-if-moved-to-other-chain.patch queue-3.18/net-qdisc_pkt_len_init-should-be-more-robust.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "net: igmp: fix source address check for IGMPv3 reports" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: igmp: fix source address check for IGMPv3 reports to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-igmp-fix-source-address-check-for-igmpv3-reports.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 11:15:06 CET 2018 From: Felix Fietkau <nbd(a)nbd.name> Date: Fri, 19 Jan 2018 11:50:46 +0100 Subject: net: igmp: fix source address check for IGMPv3 reports From: Felix Fietkau <nbd(a)nbd.name> [ Upstream commit ad23b750933ea7bf962678972a286c78a8fa36aa ] Commit "net: igmp: Use correct source address on IGMPv3 reports" introduced a check to validate the source address of locally generated IGMPv3 packets. Instead of checking the local interface address directly, it uses inet_ifa_match(fl4->saddr, ifa), which checks if the address is on the local subnet (or equal to the point-to-point address if used). This breaks for point-to-point interfaces, so check against ifa->ifa_local directly. Cc: Kevin Cernekee <cernekee(a)chromium.org> Fixes: a46182b00290 ("net: igmp: Use correct source address on IGMPv3 reports") Reported-by: Sebastian Gottschall <s.gottschall(a)dd-wrt.com> Signed-off-by: Felix Fietkau <nbd(a)nbd.name> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/ipv4/igmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -329,7 +329,7 @@ static __be32 igmpv3_get_srcaddr(struct return htonl(INADDR_ANY); for_ifa(in_dev) { - if (inet_ifa_match(fl4->saddr, ifa)) + if (fl4->saddr == ifa->ifa_local) return fl4->saddr; } endfor_ifa(in_dev); Patches currently in stable-queue which might be from nbd(a)nbd.name are queue-3.18/net-igmp-fix-source-address-check-for-igmpv3-reports.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "net: Allow neigh contructor functions ability to modify the primary_key" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: Allow neigh contructor functions ability to modify the primary_key to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-allow-neigh-contructor-functions-ability-to-modify-the-primary_key.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 11:15:06 CET 2018 From: Jim Westfall <jwestfall(a)surrealistic.net> Date: Sun, 14 Jan 2018 04:18:50 -0800 Subject: net: Allow neigh contructor functions ability to modify the primary_key From: Jim Westfall <jwestfall(a)surrealistic.net> [ Upstream commit 096b9854c04df86f03b38a97d40b6506e5730919 ] Use n->primary_key instead of pkey to account for the possibility that a neigh constructor function may have modified the primary_key value. Signed-off-by: Jim Westfall <jwestfall(a)surrealistic.net> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/core/neighbour.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -508,7 +508,7 @@ struct neighbour *__neigh_create(struct if (atomic_read(&tbl->entries) > (1 << nht->hash_shift)) nht = neigh_hash_grow(tbl, nht->hash_shift + 1); - hash_val = tbl->hash(pkey, dev, nht->hash_rnd) >> (32 - nht->hash_shift); + hash_val = tbl->hash(n->primary_key, dev, nht->hash_rnd) >> (32 - nht->hash_shift); if (n->parms->dead) { rc = ERR_PTR(-EINVAL); @@ -520,7 +520,7 @@ struct neighbour *__neigh_create(struct n1 != NULL; n1 = rcu_dereference_protected(n1->next, lockdep_is_held(&tbl->lock))) { - if (dev == n1->dev && !memcmp(n1->primary_key, pkey, key_len)) { + if (dev == n1->dev && !memcmp(n1->primary_key, n->primary_key, key_len)) { if (want_ref) neigh_hold(n1); rc = n1; Patches currently in stable-queue which might be from jwestfall(a)surrealistic.net are queue-3.18/ipv4-make-neigh-lookup-keys-for-loopback-point-to-point-devices-be-inaddr_any.patch queue-3.18/net-allow-neigh-contructor-functions-ability-to-modify-the-primary_key.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "ipv6: fix udpv6 sendmsg crash caused by too small MTU" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled ipv6: fix udpv6 sendmsg crash caused by too small MTU to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: ipv6-fix-udpv6-sendmsg-crash-caused-by-too-small-mtu.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 11:15:06 CET 2018 From: Mike Maloney <maloney(a)google.com> Date: Wed, 10 Jan 2018 12:45:10 -0500 Subject: ipv6: fix udpv6 sendmsg crash caused by too small MTU From: Mike Maloney <maloney(a)google.com> [ Upstream commit 749439bfac6e1a2932c582e2699f91d329658196 ] The logic in __ip6_append_data() assumes that the MTU is at least large enough for the headers. A device's MTU may be adjusted after being added while sendmsg() is processing data, resulting in __ip6_append_data() seeing any MTU. For an mtu smaller than the size of the fragmentation header, the math results in a negative 'maxfraglen', which causes problems when refragmenting any previous skb in the skb_write_queue, leaving it possibly malformed. Instead sendmsg returns EINVAL when the mtu is calculated to be less than IPV6_MIN_MTU. Found by syzkaller: kernel BUG at ./include/linux/skbuff.h:2064! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 14216 Comm: syz-executor5 Not tainted 4.13.0-rc4+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d0b68580 task.stack: ffff8801ac6b8000 RIP: 0010:__skb_pull include/linux/skbuff.h:2064 [inline] RIP: 0010:__ip6_make_skb+0x18cf/0x1f70 net/ipv6/ip6_output.c:1617 RSP: 0018:ffff8801ac6bf570 EFLAGS: 00010216 RAX: 0000000000010000 RBX: 0000000000000028 RCX: ffffc90003cce000 RDX: 00000000000001b8 RSI: ffffffff839df06f RDI: ffff8801d9478ca0 RBP: ffff8801ac6bf780 R08: ffff8801cc3f1dbc R09: 0000000000000000 R10: ffff8801ac6bf7a0 R11: 43cb4b7b1948a9e7 R12: ffff8801cc3f1dc8 R13: ffff8801cc3f1d40 R14: 0000000000001036 R15: dffffc0000000000 FS: 00007f43d740c700(0000) GS:ffff8801dc100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7834984000 CR3: 00000001d79b9000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip6_finish_skb include/net/ipv6.h:911 [inline] udp_v6_push_pending_frames+0x255/0x390 net/ipv6/udp.c:1093 udpv6_sendmsg+0x280d/0x31a0 net/ipv6/udp.c:1363 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 SYSC_sendto+0x352/0x5a0 net/socket.c:1750 SyS_sendto+0x40/0x50 net/socket.c:1718 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4512e9 RSP: 002b:00007f43d740bc08 EFLAGS: 00000216 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000007180a8 RCX: 00000000004512e9 RDX: 000000000000002e RSI: 0000000020d08000 RDI: 0000000000000005 RBP: 0000000000000086 R08: 00000000209c1000 R09: 000000000000001c R10: 0000000000040800 R11: 0000000000000216 R12: 00000000004b9c69 R13: 00000000ffffffff R14: 0000000000000005 R15: 00000000202c2000 Code: 9e 01 fe e9 c5 e8 ff ff e8 7f 9e 01 fe e9 4a ea ff ff 48 89 f7 e8 52 9e 01 fe e9 aa eb ff ff e8 a8 b6 cf fd 0f 0b e8 a1 b6 cf fd <0f> 0b 49 8d 45 78 4d 8d 45 7c 48 89 85 78 fe ff ff 49 8d 85 ba RIP: __skb_pull include/linux/skbuff.h:2064 [inline] RSP: ffff8801ac6bf570 RIP: __ip6_make_skb+0x18cf/0x1f70 net/ipv6/ip6_output.c:1617 RSP: ffff8801ac6bf570 Reported-by: syzbot <syzkaller(a)googlegroups.com> Signed-off-by: Mike Maloney <maloney(a)google.com> Reviewed-by: Eric Dumazet <edumazet(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/ipv6/ip6_output.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1214,14 +1214,16 @@ int ip6_append_data(struct sock *sk, int np->cork.tclass = tclass; if (rt->dst.flags & DST_XFRM_TUNNEL) mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ? - rt->dst.dev->mtu : dst_mtu(&rt->dst); + READ_ONCE(rt->dst.dev->mtu) : dst_mtu(&rt->dst); else mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ? - rt->dst.dev->mtu : dst_mtu(rt->dst.path); + READ_ONCE(rt->dst.dev->mtu) : dst_mtu(rt->dst.path); if (np->frag_size < mtu) { if (np->frag_size) mtu = np->frag_size; } + if (mtu < IPV6_MIN_MTU) + return -EINVAL; cork->fragsize = mtu; if (dst_allfrag(rt->dst.path)) cork->flags |= IPCORK_ALLFRAG; Patches currently in stable-queue which might be from maloney(a)google.com are queue-3.18/ipv6-fix-udpv6-sendmsg-crash-caused-by-too-small-mtu.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: ipv4-make-neigh-lookup-keys-for-loopback-point-to-point-devices-be-inaddr_any.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 11:15:06 CET 2018 From: Jim Westfall <jwestfall(a)surrealistic.net> Date: Sun, 14 Jan 2018 04:18:51 -0800 Subject: ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY From: Jim Westfall <jwestfall(a)surrealistic.net> [ Upstream commit cd9ff4de0107c65d69d02253bb25d6db93c3dbc1 ] Map all lookup neigh keys to INADDR_ANY for loopback/point-to-point devices to avoid making an entry for every remote ip the device needs to talk to. This used the be the old behavior but became broken in a263b3093641f (ipv4: Make neigh lookups directly in output packet path) and later removed in 0bb4087cbec0 (ipv4: Fix neigh lookup keying over loopback/point-to-point devices) because it was broken. Signed-off-by: Jim Westfall <jwestfall(a)surrealistic.net> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/net/arp.h | 3 +++ net/ipv4/arp.c | 7 ++++++- 2 files changed, 9 insertions(+), 1 deletion(-) --- a/include/net/arp.h +++ b/include/net/arp.h @@ -37,6 +37,9 @@ static inline struct neighbour *__ipv4_n { struct neighbour *n; + if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT)) + key = INADDR_ANY; + rcu_read_lock_bh(); n = __ipv4_neigh_lookup_noref(dev, key); if (n && !atomic_inc_not_zero(&n->refcnt)) --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -221,11 +221,16 @@ static u32 arp_hash(const void *pkey, static int arp_constructor(struct neighbour *neigh) { - __be32 addr = *(__be32 *)neigh->primary_key; + __be32 addr; struct net_device *dev = neigh->dev; struct in_device *in_dev; struct neigh_parms *parms; + u32 inaddr_any = INADDR_ANY; + if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT)) + memcpy(neigh->primary_key, &inaddr_any, arp_tbl.key_len); + + addr = *(__be32 *)neigh->primary_key; rcu_read_lock(); in_dev = __in_dev_get_rcu(dev); if (in_dev == NULL) { Patches currently in stable-queue which might be from jwestfall(a)surrealistic.net are queue-3.18/ipv4-make-neigh-lookup-keys-for-loopback-point-to-point-devices-be-inaddr_any.patch queue-3.18/net-allow-neigh-contructor-functions-ability-to-modify-the-primary_key.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed state" has been added to the 3.18-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed state to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: dccp-don-t-restart-ccid2_hc_tx_rto_expire-if-sk-in-closed-state.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 11:15:06 CET 2018 From: Alexey Kodanev <alexey.kodanev(a)oracle.com> Date: Fri, 26 Jan 2018 15:14:16 +0300 Subject: dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed state From: Alexey Kodanev <alexey.kodanev(a)oracle.com> [ Upstream commit dd5684ecae3bd8e44b644f50e2c12c7e57fdfef5 ] ccid2_hc_tx_rto_expire() timer callback always restarts the timer again and can run indefinitely (unless it is stopped outside), and after commit 120e9dabaf55 ("dccp: defer ccid_hc_tx_delete() at dismantle time"), which moved ccid_hc_tx_delete() (also includes sk_stop_timer()) from dccp_destroy_sock() to sk_destruct(), this started to happen quite often. The timer prevents releasing the socket, as a result, sk_destruct() won't be called. Found with LTP/dccp_ipsec tests running on the bonding device, which later couldn't be unloaded after the tests were completed: unregister_netdevice: waiting for bond0 to become free. Usage count = 148 Fixes: 2a91aa396739 ("[DCCP] CCID2: Initial CCID2 (TCP-Like) implementation") Signed-off-by: Alexey Kodanev <alexey.kodanev(a)oracle.com> Reviewed-by: Eric Dumazet <edumazet(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/dccp/ccids/ccid2.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/dccp/ccids/ccid2.c +++ b/net/dccp/ccids/ccid2.c @@ -140,6 +140,9 @@ static void ccid2_hc_tx_rto_expire(unsig ccid2_pr_debug("RTO_EXPIRE\n"); + if (sk->sk_state == DCCP_CLOSED) + goto out; + /* back-off timer */ hc->tx_rto <<= 1; if (hc->tx_rto > DCCP_RTO_MAX) Patches currently in stable-queue which might be from alexey.kodanev(a)oracle.com are queue-3.18/dccp-don-t-restart-ccid2_hc_tx_rto_expire-if-sk-in-closed-state.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "net: tcp: close sock if net namespace is exiting" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: tcp: close sock if net namespace is exiting to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-tcp-close-sock-if-net-namespace-is-exiting.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Dan Streetman <ddstreet(a)ieee.org> Date: Thu, 18 Jan 2018 16:14:26 -0500 Subject: net: tcp: close sock if net namespace is exiting From: Dan Streetman <ddstreet(a)ieee.org> [ Upstream commit 4ee806d51176ba7b8ff1efd81f271d7252e03a1d ] When a tcp socket is closed, if it detects that its net namespace is exiting, close immediately and do not wait for FIN sequence. For normal sockets, a reference is taken to their net namespace, so it will never exit while the socket is open. However, kernel sockets do not take a reference to their net namespace, so it may begin exiting while the kernel socket is still open. In this case if the kernel socket is a tcp socket, it will stay open trying to complete its close sequence. The sock's dst(s) hold a reference to their interface, which are all transferred to the namespace's loopback interface when the real interfaces are taken down. When the namespace tries to take down its loopback interface, it hangs waiting for all references to the loopback interface to release, which results in messages like: unregister_netdevice: waiting for lo to become free. Usage count = 1 These messages continue until the socket finally times out and closes. Since the net namespace cleanup holds the net_mutex while calling its registered pernet callbacks, any new net namespace initialization is blocked until the current net namespace finishes exiting. After this change, the tcp socket notices the exiting net namespace, and closes immediately, releasing its dst(s) and their reference to the loopback interface, which lets the net namespace continue exiting. Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1711407 Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=97811 Signed-off-by: Dan Streetman <ddstreet(a)canonical.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/net/net_namespace.h | 10 ++++++++++ net/ipv4/tcp.c | 3 +++ net/ipv4/tcp_timer.c | 15 +++++++++++++++ 3 files changed, 28 insertions(+) --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -209,6 +209,11 @@ int net_eq(const struct net *net1, const return net1 == net2; } +static inline int check_net(const struct net *net) +{ + return atomic_read(&net->count) != 0; +} + void net_drop_ns(void *); #else @@ -232,6 +237,11 @@ int net_eq(const struct net *net1, const { return 1; } + +static inline int check_net(const struct net *net) +{ + return 1; +} #define net_drop_ns NULL #endif --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2176,6 +2176,9 @@ adjudge_to_death: tcp_send_active_reset(sk, GFP_ATOMIC); NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPABORTONMEMORY); + } else if (!check_net(sock_net(sk))) { + /* Not possible to send reset; just close */ + tcp_set_state(sk, TCP_CLOSE); } } --- a/net/ipv4/tcp_timer.c +++ b/net/ipv4/tcp_timer.c @@ -46,11 +46,19 @@ static void tcp_write_err(struct sock *s * to prevent DoS attacks. It is called when a retransmission timeout * or zero probe timeout occurs on orphaned socket. * + * Also close if our net namespace is exiting; in that case there is no + * hope of ever communicating again since all netns interfaces are already + * down (or about to be down), and we need to release our dst references, + * which have been moved to the netns loopback interface, so the namespace + * can finish exiting. This condition is only possible if we are a kernel + * socket, as those do not hold references to the namespace. + * * Criteria is still not confirmed experimentally and may change. * We kill the socket, if: * 1. If number of orphaned sockets exceeds an administratively configured * limit. * 2. If we have strong memory pressure. + * 3. If our net namespace is exiting. */ static int tcp_out_of_resources(struct sock *sk, bool do_reset) { @@ -79,6 +87,13 @@ static int tcp_out_of_resources(struct s NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPABORTONMEMORY); return 1; } + + if (!check_net(sock_net(sk))) { + /* Not possible to send reset; just close */ + tcp_done(sk); + return 1; + } + return 0; } Patches currently in stable-queue which might be from ddstreet(a)ieee.org are queue-4.4/net-tcp-close-sock-if-net-namespace-is-exiting.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "vmxnet3: repair memory leak" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled vmxnet3: repair memory leak to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: vmxnet3-repair-memory-leak.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Neil Horman <nhorman(a)tuxdriver.com> Date: Mon, 22 Jan 2018 16:06:37 -0500 Subject: vmxnet3: repair memory leak From: Neil Horman <nhorman(a)tuxdriver.com> [ Upstream commit 848b159835ddef99cc4193083f7e786c3992f580 ] with the introduction of commit b0eb57cb97e7837ebb746404c2c58c6f536f23fa, it appears that rq->buf_info is improperly handled. While it is heap allocated when an rx queue is setup, and freed when torn down, an old line of code in vmxnet3_rq_destroy was not properly removed, leading to rq->buf_info[0] being set to NULL prior to its being freed, causing a memory leak, which eventually exhausts the system on repeated create/destroy operations (for example, when the mtu of a vmxnet3 interface is changed frequently. Fix is pretty straight forward, just move the NULL set to after the free. Tested by myself with successful results Applies to net, and should likely be queued for stable, please Signed-off-by: Neil Horman <nhorman(a)tuxdriver.com> Reported-By: boyang(a)redhat.com CC: boyang(a)redhat.com CC: Shrikrishna Khare <skhare(a)vmware.com> CC: "VMware, Inc." <pv-drivers(a)vmware.com> CC: David S. Miller <davem(a)davemloft.net> Acked-by: Shrikrishna Khare <skhare(a)vmware.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/vmxnet3/vmxnet3_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -1563,7 +1563,6 @@ static void vmxnet3_rq_destroy(struct vm rq->rx_ring[i].basePA); rq->rx_ring[i].base = NULL; } - rq->buf_info[i] = NULL; } if (rq->comp_ring.base) { @@ -1578,6 +1577,7 @@ static void vmxnet3_rq_destroy(struct vm (rq->rx_ring[0].size + rq->rx_ring[1].size); dma_free_coherent(&adapter->pdev->dev, sz, rq->buf_info[0], rq->buf_info_pa); + rq->buf_info[0] = rq->buf_info[1] = NULL; } } Patches currently in stable-queue which might be from nhorman(a)tuxdriver.com are queue-4.4/sctp-do-not-allow-the-v4-socket-to-bind-a-v4mapped-v6-address.patch queue-4.4/vmxnet3-repair-memory-leak.patch queue-4.4/sctp-return-error-if-the-asoc-has-been-peeled-off-in-sctp_wait_for_sndbuf.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: sctp-return-error-if-the-asoc-has-been-peeled-off-in-sctp_wait_for_sndbuf.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Xin Long <lucien.xin(a)gmail.com> Date: Mon, 15 Jan 2018 17:01:36 +0800 Subject: sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf From: Xin Long <lucien.xin(a)gmail.com> [ Upstream commit a0ff660058b88d12625a783ce9e5c1371c87951f ] After commit cea0cc80a677 ("sctp: use the right sk after waking up from wait_buf sleep"), it may change to lock another sk if the asoc has been peeled off in sctp_wait_for_sndbuf. However, the asoc's new sk could be already closed elsewhere, as it's in the sendmsg context of the old sk that can't avoid the new sk's closing. If the sk's last one refcnt is held by this asoc, later on after putting this asoc, the new sk will be freed, while under it's own lock. This patch is to revert that commit, but fix the old issue by returning error under the old sk's lock. Fixes: cea0cc80a677 ("sctp: use the right sk after waking up from wait_buf sleep") Reported-by: syzbot+ac6ea7baa4432811eb50(a)syzkaller.appspotmail.com Signed-off-by: Xin Long <lucien.xin(a)gmail.com> Acked-by: Neil Horman <nhorman(a)tuxdriver.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sctp/socket.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -83,7 +83,7 @@ static int sctp_writeable(struct sock *sk); static void sctp_wfree(struct sk_buff *skb); static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p, - size_t msg_len, struct sock **orig_sk); + size_t msg_len); static int sctp_wait_for_packet(struct sock *sk, int *err, long *timeo_p); static int sctp_wait_for_connect(struct sctp_association *, long *timeo_p); static int sctp_wait_for_accept(struct sock *sk, long timeo); @@ -1952,7 +1952,7 @@ static int sctp_sendmsg(struct sock *sk, timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT); if (!sctp_wspace(asoc)) { /* sk can be changed by peel off when waiting for buf. */ - err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len, &sk); + err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len); if (err) { if (err == -ESRCH) { /* asoc is already dead. */ @@ -6974,12 +6974,12 @@ void sctp_sock_rfree(struct sk_buff *skb /* Helper function to wait for space in the sndbuf. */ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p, - size_t msg_len, struct sock **orig_sk) + size_t msg_len) { struct sock *sk = asoc->base.sk; - int err = 0; long current_timeo = *timeo_p; DEFINE_WAIT(wait); + int err = 0; pr_debug("%s: asoc:%p, timeo:%ld, msg_len:%zu\n", __func__, asoc, *timeo_p, msg_len); @@ -7008,17 +7008,13 @@ static int sctp_wait_for_sndbuf(struct s release_sock(sk); current_timeo = schedule_timeout(current_timeo); lock_sock(sk); - if (sk != asoc->base.sk) { - release_sock(sk); - sk = asoc->base.sk; - lock_sock(sk); - } + if (sk != asoc->base.sk) + goto do_error; *timeo_p = current_timeo; } out: - *orig_sk = sk; finish_wait(&asoc->wait, &wait); /* Release the association's refcnt. */ Patches currently in stable-queue which might be from lucien.xin(a)gmail.com are queue-4.4/sctp-do-not-allow-the-v4-socket-to-bind-a-v4mapped-v6-address.patch queue-4.4/pppoe-take-needed_headroom-of-lower-device-into-account-on-xmit.patch queue-4.4/sctp-return-error-if-the-asoc-has-been-peeled-off-in-sctp_wait_for_sndbuf.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "tcp: __tcp_hdrlen() helper" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled tcp: __tcp_hdrlen() helper to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: tcp-__tcp_hdrlen-helper.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From d9b3fca27385eafe61c3ca6feab6cb1e7dc77482 Mon Sep 17 00:00:00 2001 From: Craig Gallek <kraig(a)google.com> Date: Wed, 10 Feb 2016 11:50:37 -0500 Subject: tcp: __tcp_hdrlen() helper From: Craig Gallek <kraig(a)google.com> commit d9b3fca27385eafe61c3ca6feab6cb1e7dc77482 upstream. tcp_hdrlen is wasteful if you already have a pointer to struct tcphdr. This splits the size calculation into a helper function that can be used if a struct tcphdr is already available. Signed-off-by: Craig Gallek <kraig(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/linux/tcp.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -29,9 +29,14 @@ static inline struct tcphdr *tcp_hdr(con return (struct tcphdr *)skb_transport_header(skb); } +static inline unsigned int __tcp_hdrlen(const struct tcphdr *th) +{ + return th->doff * 4; +} + static inline unsigned int tcp_hdrlen(const struct sk_buff *skb) { - return tcp_hdr(skb)->doff * 4; + return __tcp_hdrlen(tcp_hdr(skb)); } static inline struct tcphdr *inner_tcp_hdr(const struct sk_buff *skb) Patches currently in stable-queue which might be from kraig(a)google.com are queue-4.4/tcp-__tcp_hdrlen-helper.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "r8169: fix memory corruption on retrieval of hardware statistics." has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled r8169: fix memory corruption on retrieval of hardware statistics. to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: r8169-fix-memory-corruption-on-retrieval-of-hardware-statistics.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Francois Romieu <romieu(a)fr.zoreil.com> Date: Fri, 26 Jan 2018 01:53:26 +0100 Subject: r8169: fix memory corruption on retrieval of hardware statistics. From: Francois Romieu <romieu(a)fr.zoreil.com> [ Upstream commit a78e93661c5fd30b9e1dee464b2f62f966883ef7 ] Hardware statistics retrieval hurts in tight invocation loops. Avoid extraneous write and enforce strict ordering of writes targeted to the tally counters dump area address registers. Signed-off-by: Francois Romieu <romieu(a)fr.zoreil.com> Tested-by: Oliver Freyermuth <o.freyermuth(a)googlemail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ethernet/realtek/r8169.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -2205,19 +2205,14 @@ static bool rtl8169_do_counters(struct n void __iomem *ioaddr = tp->mmio_addr; dma_addr_t paddr = tp->counters_phys_addr; u32 cmd; - bool ret; RTL_W32(CounterAddrHigh, (u64)paddr >> 32); + RTL_R32(CounterAddrHigh); cmd = (u64)paddr & DMA_BIT_MASK(32); RTL_W32(CounterAddrLow, cmd); RTL_W32(CounterAddrLow, cmd | counter_cmd); - ret = rtl_udelay_loop_wait_low(tp, &rtl_counters_cond, 10, 1000); - - RTL_W32(CounterAddrLow, 0); - RTL_W32(CounterAddrHigh, 0); - - return ret; + return rtl_udelay_loop_wait_low(tp, &rtl_counters_cond, 10, 1000); } static bool rtl8169_reset_counters(struct net_device *dev) Patches currently in stable-queue which might be from romieu(a)fr.zoreil.com are queue-4.4/r8169-fix-memory-corruption-on-retrieval-of-hardware-statistics.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "sctp: do not allow the v4 socket to bind a v4mapped v6 address" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled sctp: do not allow the v4 socket to bind a v4mapped v6 address to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: sctp-do-not-allow-the-v4-socket-to-bind-a-v4mapped-v6-address.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Xin Long <lucien.xin(a)gmail.com> Date: Mon, 15 Jan 2018 17:02:00 +0800 Subject: sctp: do not allow the v4 socket to bind a v4mapped v6 address From: Xin Long <lucien.xin(a)gmail.com> [ Upstream commit c5006b8aa74599ce19104b31d322d2ea9ff887cc ] The check in sctp_sockaddr_af is not robust enough to forbid binding a v4mapped v6 addr on a v4 socket. The worse thing is that v4 socket's bind_verify would not convert this v4mapped v6 addr to a v4 addr. syzbot even reported a crash as the v4 socket bound a v6 addr. This patch is to fix it by doing the common sa.sa_family check first, then AF_INET check for v4mapped v6 addrs. Fixes: 7dab83de50c7 ("sctp: Support ipv6only AF_INET6 sockets.") Reported-by: syzbot+7b7b518b1228d2743963(a)syzkaller.appspotmail.com Acked-by: Neil Horman <nhorman(a)tuxdriver.com> Signed-off-by: Xin Long <lucien.xin(a)gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/sctp/socket.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -332,16 +332,14 @@ static struct sctp_af *sctp_sockaddr_af( if (len < sizeof (struct sockaddr)) return NULL; + if (!opt->pf->af_supported(addr->sa.sa_family, opt)) + return NULL; + /* V4 mapped address are really of AF_INET family */ if (addr->sa.sa_family == AF_INET6 && - ipv6_addr_v4mapped(&addr->v6.sin6_addr)) { - if (!opt->pf->af_supported(AF_INET, opt)) - return NULL; - } else { - /* Does this PF support this AF? */ - if (!opt->pf->af_supported(addr->sa.sa_family, opt)) - return NULL; - } + ipv6_addr_v4mapped(&addr->v6.sin6_addr) && + !opt->pf->af_supported(AF_INET, opt)) + return NULL; /* If we get this far, af is valid. */ af = sctp_get_af_specific(addr->sa.sa_family); Patches currently in stable-queue which might be from lucien.xin(a)gmail.com are queue-4.4/sctp-do-not-allow-the-v4-socket-to-bind-a-v4mapped-v6-address.patch queue-4.4/pppoe-take-needed_headroom-of-lower-device-into-account-on-xmit.patch queue-4.4/sctp-return-error-if-the-asoc-has-been-peeled-off-in-sctp_wait_for_sndbuf.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "pppoe: take ->needed_headroom of lower device into account on xmit" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled pppoe: take ->needed_headroom of lower device into account on xmit to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: pppoe-take-needed_headroom-of-lower-device-into-account-on-xmit.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Guillaume Nault <g.nault(a)alphalink.fr> Date: Mon, 22 Jan 2018 18:06:37 +0100 Subject: pppoe: take ->needed_headroom of lower device into account on xmit From: Guillaume Nault <g.nault(a)alphalink.fr> [ Upstream commit 02612bb05e51df8489db5e94d0cf8d1c81f87b0c ] In pppoe_sendmsg(), reserving dev->hard_header_len bytes of headroom was probably fine before the introduction of ->needed_headroom in commit f5184d267c1a ("net: Allow netdevices to specify needed head/tailroom"). But now, virtual devices typically advertise the size of their overhead in dev->needed_headroom, so we must also take it into account in skb_reserve(). Allocation size of skb is also updated to take dev->needed_tailroom into account and replace the arbitrary 32 bytes with the real size of a PPPoE header. This issue was discovered by syzbot, who connected a pppoe socket to a gre device which had dev->header_ops->create == ipgre_header and dev->hard_header_len == 0. Therefore, PPPoE didn't reserve any headroom, and dev_hard_header() crashed when ipgre_header() tried to prepend its header to skb->data. skbuff: skb_under_panic: text:000000001d390b3a len:31 put:24 head:00000000d8ed776f data:000000008150e823 tail:0x7 end:0xc0 dev:gre0 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:104! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 3670 Comm: syzkaller801466 Not tainted 4.15.0-rc7-next-20180115+ #97 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:skb_panic+0x162/0x1f0 net/core/skbuff.c:100 RSP: 0018:ffff8801d9bd7840 EFLAGS: 00010282 RAX: 0000000000000083 RBX: ffff8801d4f083c0 RCX: 0000000000000000 RDX: 0000000000000083 RSI: 1ffff1003b37ae92 RDI: ffffed003b37aefc RBP: ffff8801d9bd78a8 R08: 1ffff1003b37ae8a R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff86200de0 R13: ffffffff84a981ad R14: 0000000000000018 R15: ffff8801d2d34180 FS: 00000000019c4880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000208bc000 CR3: 00000001d9111001 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_under_panic net/core/skbuff.c:114 [inline] skb_push+0xce/0xf0 net/core/skbuff.c:1714 ipgre_header+0x6d/0x4e0 net/ipv4/ip_gre.c:879 dev_hard_header include/linux/netdevice.h:2723 [inline] pppoe_sendmsg+0x58e/0x8b0 drivers/net/ppp/pppoe.c:890 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 sock_write_iter+0x31a/0x5d0 net/socket.c:909 call_write_iter include/linux/fs.h:1775 [inline] do_iter_readv_writev+0x525/0x7f0 fs/read_write.c:653 do_iter_write+0x154/0x540 fs/read_write.c:932 vfs_writev+0x18a/0x340 fs/read_write.c:977 do_writev+0xfc/0x2a0 fs/read_write.c:1012 SYSC_writev fs/read_write.c:1085 [inline] SyS_writev+0x27/0x30 fs/read_write.c:1082 entry_SYSCALL_64_fastpath+0x29/0xa0 Admittedly PPPoE shouldn't be allowed to run on non Ethernet-like interfaces, but reserving space for ->needed_headroom is a more fundamental issue that needs to be addressed first. Same problem exists for __pppoe_xmit(), which also needs to take dev->needed_headroom into account in skb_cow_head(). Fixes: f5184d267c1a ("net: Allow netdevices to specify needed head/tailroom") Reported-by: syzbot+ed0838d0fa4c4f2b528e20286e6dc63effc7c14d(a)syzkaller.appspotmail.com Signed-off-by: Guillaume Nault <g.nault(a)alphalink.fr> Reviewed-by: Xin Long <lucien.xin(a)gmail.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/ppp/pppoe.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) --- a/drivers/net/ppp/pppoe.c +++ b/drivers/net/ppp/pppoe.c @@ -860,6 +860,7 @@ static int pppoe_sendmsg(struct socket * struct pppoe_hdr *ph; struct net_device *dev; char *start; + int hlen; lock_sock(sk); if (sock_flag(sk, SOCK_DEAD) || !(sk->sk_state & PPPOX_CONNECTED)) { @@ -878,16 +879,16 @@ static int pppoe_sendmsg(struct socket * if (total_len > (dev->mtu + dev->hard_header_len)) goto end; - - skb = sock_wmalloc(sk, total_len + dev->hard_header_len + 32, - 0, GFP_KERNEL); + hlen = LL_RESERVED_SPACE(dev); + skb = sock_wmalloc(sk, hlen + sizeof(*ph) + total_len + + dev->needed_tailroom, 0, GFP_KERNEL); if (!skb) { error = -ENOMEM; goto end; } /* Reserve space for headers. */ - skb_reserve(skb, dev->hard_header_len); + skb_reserve(skb, hlen); skb_reset_network_header(skb); skb->dev = dev; @@ -948,7 +949,7 @@ static int __pppoe_xmit(struct sock *sk, /* Copy the data if there is no space for the header or if it's * read-only. */ - if (skb_cow_head(skb, sizeof(*ph) + dev->hard_header_len)) + if (skb_cow_head(skb, LL_RESERVED_SPACE(dev) + sizeof(*ph))) goto abort; __skb_push(skb, sizeof(*ph)); Patches currently in stable-queue which might be from g.nault(a)alphalink.fr are queue-4.4/pppoe-take-needed_headroom-of-lower-device-into-account-on-xmit.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "net: qdisc_pkt_len_init() should be more robust" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: qdisc_pkt_len_init() should be more robust to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-qdisc_pkt_len_init-should-be-more-robust.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Eric Dumazet <edumazet(a)google.com> Date: Thu, 18 Jan 2018 19:59:19 -0800 Subject: net: qdisc_pkt_len_init() should be more robust From: Eric Dumazet <edumazet(a)google.com> [ Upstream commit 7c68d1a6b4db9012790af7ac0f0fdc0d2083422a ] Without proper validation of DODGY packets, we might very well feed qdisc_pkt_len_init() with invalid GSO packets. tcp_hdrlen() might access out-of-bound data, so let's use skb_header_pointer() and proper checks. Whole story is described in commit d0c081b49137 ("flow_dissector: properly cap thoff field") We have the goal of validating DODGY packets earlier in the stack, so we might very well revert this fix in the future. Signed-off-by: Eric Dumazet <edumazet(a)google.com> Cc: Willem de Bruijn <willemb(a)google.com> Cc: Jason Wang <jasowang(a)redhat.com> Reported-by: syzbot+9da69ebac7dddd804552(a)syzkaller.appspotmail.com Acked-by: Jason Wang <jasowang(a)redhat.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/core/dev.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2889,10 +2889,21 @@ static void qdisc_pkt_len_init(struct sk hdr_len = skb_transport_header(skb) - skb_mac_header(skb); /* + transport layer */ - if (likely(shinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))) - hdr_len += tcp_hdrlen(skb); - else - hdr_len += sizeof(struct udphdr); + if (likely(shinfo->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))) { + const struct tcphdr *th; + struct tcphdr _tcphdr; + + th = skb_header_pointer(skb, skb_transport_offset(skb), + sizeof(_tcphdr), &_tcphdr); + if (likely(th)) + hdr_len += __tcp_hdrlen(th); + } else { + struct udphdr _udphdr; + + if (skb_header_pointer(skb, skb_transport_offset(skb), + sizeof(_udphdr), &_udphdr)) + hdr_len += sizeof(struct udphdr); + } if (shinfo->gso_type & SKB_GSO_DODGY) gso_segs = DIV_ROUND_UP(skb->len - hdr_len, Patches currently in stable-queue which might be from edumazet(a)google.com are queue-4.4/ipv6-fix-udpv6-sendmsg-crash-caused-by-too-small-mtu.patch queue-4.4/flow_dissector-properly-cap-thoff-field.patch queue-4.4/ipv6-ip6_make_skb-needs-to-clear-cork.base.dst.patch queue-4.4/dccp-don-t-restart-ccid2_hc_tx_rto_expire-if-sk-in-closed-state.patch queue-4.4/netfilter-restart-search-if-moved-to-other-chain.patch queue-4.4/net-qdisc_pkt_len_init-should-be-more-robust.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "net: igmp: fix source address check for IGMPv3 reports" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: igmp: fix source address check for IGMPv3 reports to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-igmp-fix-source-address-check-for-igmpv3-reports.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Felix Fietkau <nbd(a)nbd.name> Date: Fri, 19 Jan 2018 11:50:46 +0100 Subject: net: igmp: fix source address check for IGMPv3 reports From: Felix Fietkau <nbd(a)nbd.name> [ Upstream commit ad23b750933ea7bf962678972a286c78a8fa36aa ] Commit "net: igmp: Use correct source address on IGMPv3 reports" introduced a check to validate the source address of locally generated IGMPv3 packets. Instead of checking the local interface address directly, it uses inet_ifa_match(fl4->saddr, ifa), which checks if the address is on the local subnet (or equal to the point-to-point address if used). This breaks for point-to-point interfaces, so check against ifa->ifa_local directly. Cc: Kevin Cernekee <cernekee(a)chromium.org> Fixes: a46182b00290 ("net: igmp: Use correct source address on IGMPv3 reports") Reported-by: Sebastian Gottschall <s.gottschall(a)dd-wrt.com> Signed-off-by: Felix Fietkau <nbd(a)nbd.name> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/ipv4/igmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -338,7 +338,7 @@ static __be32 igmpv3_get_srcaddr(struct return htonl(INADDR_ANY); for_ifa(in_dev) { - if (inet_ifa_match(fl4->saddr, ifa)) + if (fl4->saddr == ifa->ifa_local) return fl4->saddr; } endfor_ifa(in_dev); Patches currently in stable-queue which might be from nbd(a)nbd.name are queue-4.4/net-igmp-fix-source-address-check-for-igmpv3-reports.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "net: Allow neigh contructor functions ability to modify the primary_key" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled net: Allow neigh contructor functions ability to modify the primary_key to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: net-allow-neigh-contructor-functions-ability-to-modify-the-primary_key.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Jim Westfall <jwestfall(a)surrealistic.net> Date: Sun, 14 Jan 2018 04:18:50 -0800 Subject: net: Allow neigh contructor functions ability to modify the primary_key From: Jim Westfall <jwestfall(a)surrealistic.net> [ Upstream commit 096b9854c04df86f03b38a97d40b6506e5730919 ] Use n->primary_key instead of pkey to account for the possibility that a neigh constructor function may have modified the primary_key value. Signed-off-by: Jim Westfall <jwestfall(a)surrealistic.net> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/core/neighbour.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -496,7 +496,7 @@ struct neighbour *__neigh_create(struct if (atomic_read(&tbl->entries) > (1 << nht->hash_shift)) nht = neigh_hash_grow(tbl, nht->hash_shift + 1); - hash_val = tbl->hash(pkey, dev, nht->hash_rnd) >> (32 - nht->hash_shift); + hash_val = tbl->hash(n->primary_key, dev, nht->hash_rnd) >> (32 - nht->hash_shift); if (n->parms->dead) { rc = ERR_PTR(-EINVAL); @@ -508,7 +508,7 @@ struct neighbour *__neigh_create(struct n1 != NULL; n1 = rcu_dereference_protected(n1->next, lockdep_is_held(&tbl->lock))) { - if (dev == n1->dev && !memcmp(n1->primary_key, pkey, key_len)) { + if (dev == n1->dev && !memcmp(n1->primary_key, n->primary_key, key_len)) { if (want_ref) neigh_hold(n1); rc = n1; Patches currently in stable-queue which might be from jwestfall(a)surrealistic.net are queue-4.4/ipv4-make-neigh-lookup-keys-for-loopback-point-to-point-devices-be-inaddr_any.patch queue-4.4/net-allow-neigh-contructor-functions-ability-to-modify-the-primary_key.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "ipv6: ip6_make_skb() needs to clear cork.base.dst" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled ipv6: ip6_make_skb() needs to clear cork.base.dst to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: ipv6-ip6_make_skb-needs-to-clear-cork.base.dst.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Eric Dumazet <edumazet(a)google.com> Date: Thu, 11 Jan 2018 22:31:18 -0800 Subject: ipv6: ip6_make_skb() needs to clear cork.base.dst From: Eric Dumazet <edumazet(a)google.com> [ Upstream commit 95ef498d977bf44ac094778fd448b98af158a3e6 ] In my last patch, I missed fact that cork.base.dst was not initialized in ip6_make_skb() : If ip6_setup_cork() returns an error, we might attempt a dst_release() on some random pointer. Fixes: 862c03ee1deb ("ipv6: fix possible mem leaks in ipv6_make_skb()") Signed-off-by: Eric Dumazet <edumazet(a)google.com> Reported-by: syzbot <syzkaller(a)googlegroups.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/ipv6/ip6_output.c | 1 + 1 file changed, 1 insertion(+) --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1785,6 +1785,7 @@ struct sk_buff *ip6_make_skb(struct sock cork.base.flags = 0; cork.base.addr = 0; cork.base.opt = NULL; + cork.base.dst = NULL; v6_cork.opt = NULL; err = ip6_setup_cork(sk, &cork, &v6_cork, hlimit, tclass, opt, rt, fl6); if (err) { Patches currently in stable-queue which might be from edumazet(a)google.com are queue-4.4/ipv6-fix-udpv6-sendmsg-crash-caused-by-too-small-mtu.patch queue-4.4/flow_dissector-properly-cap-thoff-field.patch queue-4.4/ipv6-ip6_make_skb-needs-to-clear-cork.base.dst.patch queue-4.4/dccp-don-t-restart-ccid2_hc_tx_rto_expire-if-sk-in-closed-state.patch queue-4.4/netfilter-restart-search-if-moved-to-other-chain.patch queue-4.4/net-qdisc_pkt_len_init-should-be-more-robust.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "lan78xx: Fix failure in USB Full Speed" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled lan78xx: Fix failure in USB Full Speed to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: lan78xx-fix-failure-in-usb-full-speed.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Yuiko Oshino <yuiko.oshino(a)microchip.com> Date: Mon, 15 Jan 2018 13:24:28 -0500 Subject: lan78xx: Fix failure in USB Full Speed From: Yuiko Oshino <yuiko.oshino(a)microchip.com> [ Upstream commit a5b1379afbfabf91e3a689e82ac619a7157336b3 ] Fix initialize the uninitialized tx_qlen to an appropriate value when USB Full Speed is used. Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Signed-off-by: Yuiko Oshino <yuiko.oshino(a)microchip.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/net/usb/lan78xx.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -1859,6 +1859,7 @@ static int lan78xx_reset(struct lan78xx_ buf = DEFAULT_BURST_CAP_SIZE / FS_USB_PKT_SIZE; dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE; dev->rx_qlen = 4; + dev->tx_qlen = 4; } ret = lan78xx_write_reg(dev, BURST_CAP, buf); Patches currently in stable-queue which might be from yuiko.oshino(a)microchip.com are queue-4.4/lan78xx-fix-failure-in-usb-full-speed.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "ipv6: fix udpv6 sendmsg crash caused by too small MTU" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled ipv6: fix udpv6 sendmsg crash caused by too small MTU to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: ipv6-fix-udpv6-sendmsg-crash-caused-by-too-small-mtu.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Mike Maloney <maloney(a)google.com> Date: Wed, 10 Jan 2018 12:45:10 -0500 Subject: ipv6: fix udpv6 sendmsg crash caused by too small MTU From: Mike Maloney <maloney(a)google.com> [ Upstream commit 749439bfac6e1a2932c582e2699f91d329658196 ] The logic in __ip6_append_data() assumes that the MTU is at least large enough for the headers. A device's MTU may be adjusted after being added while sendmsg() is processing data, resulting in __ip6_append_data() seeing any MTU. For an mtu smaller than the size of the fragmentation header, the math results in a negative 'maxfraglen', which causes problems when refragmenting any previous skb in the skb_write_queue, leaving it possibly malformed. Instead sendmsg returns EINVAL when the mtu is calculated to be less than IPV6_MIN_MTU. Found by syzkaller: kernel BUG at ./include/linux/skbuff.h:2064! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 14216 Comm: syz-executor5 Not tainted 4.13.0-rc4+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d0b68580 task.stack: ffff8801ac6b8000 RIP: 0010:__skb_pull include/linux/skbuff.h:2064 [inline] RIP: 0010:__ip6_make_skb+0x18cf/0x1f70 net/ipv6/ip6_output.c:1617 RSP: 0018:ffff8801ac6bf570 EFLAGS: 00010216 RAX: 0000000000010000 RBX: 0000000000000028 RCX: ffffc90003cce000 RDX: 00000000000001b8 RSI: ffffffff839df06f RDI: ffff8801d9478ca0 RBP: ffff8801ac6bf780 R08: ffff8801cc3f1dbc R09: 0000000000000000 R10: ffff8801ac6bf7a0 R11: 43cb4b7b1948a9e7 R12: ffff8801cc3f1dc8 R13: ffff8801cc3f1d40 R14: 0000000000001036 R15: dffffc0000000000 FS: 00007f43d740c700(0000) GS:ffff8801dc100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7834984000 CR3: 00000001d79b9000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip6_finish_skb include/net/ipv6.h:911 [inline] udp_v6_push_pending_frames+0x255/0x390 net/ipv6/udp.c:1093 udpv6_sendmsg+0x280d/0x31a0 net/ipv6/udp.c:1363 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 SYSC_sendto+0x352/0x5a0 net/socket.c:1750 SyS_sendto+0x40/0x50 net/socket.c:1718 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4512e9 RSP: 002b:00007f43d740bc08 EFLAGS: 00000216 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000007180a8 RCX: 00000000004512e9 RDX: 000000000000002e RSI: 0000000020d08000 RDI: 0000000000000005 RBP: 0000000000000086 R08: 00000000209c1000 R09: 000000000000001c R10: 0000000000040800 R11: 0000000000000216 R12: 00000000004b9c69 R13: 00000000ffffffff R14: 0000000000000005 R15: 00000000202c2000 Code: 9e 01 fe e9 c5 e8 ff ff e8 7f 9e 01 fe e9 4a ea ff ff 48 89 f7 e8 52 9e 01 fe e9 aa eb ff ff e8 a8 b6 cf fd 0f 0b e8 a1 b6 cf fd <0f> 0b 49 8d 45 78 4d 8d 45 7c 48 89 85 78 fe ff ff 49 8d 85 ba RIP: __skb_pull include/linux/skbuff.h:2064 [inline] RSP: ffff8801ac6bf570 RIP: __ip6_make_skb+0x18cf/0x1f70 net/ipv6/ip6_output.c:1617 RSP: ffff8801ac6bf570 Reported-by: syzbot <syzkaller(a)googlegroups.com> Signed-off-by: Mike Maloney <maloney(a)google.com> Reviewed-by: Eric Dumazet <edumazet(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/ipv6/ip6_output.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1246,14 +1246,16 @@ static int ip6_setup_cork(struct sock *s v6_cork->tclass = tclass; if (rt->dst.flags & DST_XFRM_TUNNEL) mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ? - rt->dst.dev->mtu : dst_mtu(&rt->dst); + READ_ONCE(rt->dst.dev->mtu) : dst_mtu(&rt->dst); else mtu = np->pmtudisc >= IPV6_PMTUDISC_PROBE ? - rt->dst.dev->mtu : dst_mtu(rt->dst.path); + READ_ONCE(rt->dst.dev->mtu) : dst_mtu(rt->dst.path); if (np->frag_size < mtu) { if (np->frag_size) mtu = np->frag_size; } + if (mtu < IPV6_MIN_MTU) + return -EINVAL; cork->base.fragsize = mtu; if (dst_allfrag(rt->dst.path)) cork->base.flags |= IPCORK_ALLFRAG; Patches currently in stable-queue which might be from maloney(a)google.com are queue-4.4/ipv6-fix-udpv6-sendmsg-crash-caused-by-too-small-mtu.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "ipv6: Fix getsockopt() for sockets with default IPV6_AUTOFLOWLABEL" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled ipv6: Fix getsockopt() for sockets with default IPV6_AUTOFLOWLABEL to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: ipv6-fix-getsockopt-for-sockets-with-default-ipv6_autoflowlabel.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Ben Hutchings <ben.hutchings(a)codethink.co.uk> Date: Mon, 22 Jan 2018 20:06:42 +0000 Subject: ipv6: Fix getsockopt() for sockets with default IPV6_AUTOFLOWLABEL From: Ben Hutchings <ben.hutchings(a)codethink.co.uk> [ Upstream commit e9191ffb65d8e159680ce0ad2224e1acbde6985c ] Commit 513674b5a2c9 ("net: reevalulate autoflowlabel setting after sysctl setting") removed the initialisation of ipv6_pinfo::autoflowlabel and added a second flag to indicate whether this field or the net namespace default should be used. The getsockopt() handling for this case was not updated, so it currently returns 0 for all sockets for which IPV6_AUTOFLOWLABEL is not explicitly enabled. Fix it to return the effective value, whether that has been set at the socket or net namespace level. Fixes: 513674b5a2c9 ("net: reevalulate autoflowlabel setting after sysctl ...") Signed-off-by: Ben Hutchings <ben.hutchings(a)codethink.co.uk> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/net/ipv6.h | 1 + net/ipv6/ip6_output.c | 2 +- net/ipv6/ipv6_sockglue.c | 2 +- 3 files changed, 3 insertions(+), 2 deletions(-) --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -281,6 +281,7 @@ int ipv6_flowlabel_opt_get(struct sock * int flags); int ip6_flowlabel_init(void); void ip6_flowlabel_cleanup(void); +bool ip6_autoflowlabel(struct net *net, const struct ipv6_pinfo *np); static inline void fl6_sock_release(struct ip6_flowlabel *fl) { --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -148,7 +148,7 @@ int ip6_output(struct net *net, struct s !(IP6CB(skb)->flags & IP6SKB_REROUTED)); } -static bool ip6_autoflowlabel(struct net *net, const struct ipv6_pinfo *np) +bool ip6_autoflowlabel(struct net *net, const struct ipv6_pinfo *np) { if (!np->autoflowlabel_set) return ip6_default_np_autolabel(net); --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -1313,7 +1313,7 @@ static int do_ipv6_getsockopt(struct soc break; case IPV6_AUTOFLOWLABEL: - val = np->autoflowlabel; + val = ip6_autoflowlabel(sock_net(sk), np); break; default: Patches currently in stable-queue which might be from ben.hutchings(a)codethink.co.uk are queue-4.4/vsyscall-fix-permissions-for-emulate-mode-with-kaiser-pti.patch queue-4.4/ipv6-fix-getsockopt-for-sockets-with-default-ipv6_autoflowlabel.patch queue-4.4/x86-microcode-intel-fix-bdw-late-loading-revision-check.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: ipv4-make-neigh-lookup-keys-for-loopback-point-to-point-devices-be-inaddr_any.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Jim Westfall <jwestfall(a)surrealistic.net> Date: Sun, 14 Jan 2018 04:18:51 -0800 Subject: ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY From: Jim Westfall <jwestfall(a)surrealistic.net> [ Upstream commit cd9ff4de0107c65d69d02253bb25d6db93c3dbc1 ] Map all lookup neigh keys to INADDR_ANY for loopback/point-to-point devices to avoid making an entry for every remote ip the device needs to talk to. This used the be the old behavior but became broken in a263b3093641f (ipv4: Make neigh lookups directly in output packet path) and later removed in 0bb4087cbec0 (ipv4: Fix neigh lookup keying over loopback/point-to-point devices) because it was broken. Signed-off-by: Jim Westfall <jwestfall(a)surrealistic.net> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/net/arp.h | 3 +++ net/ipv4/arp.c | 7 ++++++- 2 files changed, 9 insertions(+), 1 deletion(-) --- a/include/net/arp.h +++ b/include/net/arp.h @@ -19,6 +19,9 @@ static inline u32 arp_hashfn(const void static inline struct neighbour *__ipv4_neigh_lookup_noref(struct net_device *dev, u32 key) { + if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT)) + key = INADDR_ANY; + return ___neigh_lookup_noref(&arp_tbl, neigh_key_eq32, arp_hashfn, &key, dev); } --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -223,11 +223,16 @@ static bool arp_key_eq(const struct neig static int arp_constructor(struct neighbour *neigh) { - __be32 addr = *(__be32 *)neigh->primary_key; + __be32 addr; struct net_device *dev = neigh->dev; struct in_device *in_dev; struct neigh_parms *parms; + u32 inaddr_any = INADDR_ANY; + if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT)) + memcpy(neigh->primary_key, &inaddr_any, arp_tbl.key_len); + + addr = *(__be32 *)neigh->primary_key; rcu_read_lock(); in_dev = __in_dev_get_rcu(dev); if (!in_dev) { Patches currently in stable-queue which might be from jwestfall(a)surrealistic.net are queue-4.4/ipv4-make-neigh-lookup-keys-for-loopback-point-to-point-devices-be-inaddr_any.patch queue-4.4/net-allow-neigh-contructor-functions-ability-to-modify-the-primary_key.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "flow_dissector: properly cap thoff field" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled flow_dissector: properly cap thoff field to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: flow_dissector-properly-cap-thoff-field.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Eric Dumazet <edumazet(a)google.com> Date: Wed, 17 Jan 2018 14:21:13 -0800 Subject: flow_dissector: properly cap thoff field From: Eric Dumazet <edumazet(a)google.com> [ Upstream commit d0c081b49137cd3200f2023c0875723be66e7ce5 ] syzbot reported yet another crash [1] that is caused by insufficient validation of DODGY packets. Two bugs are happening here to trigger the crash. 1) Flow dissection leaves with incorrect thoff field. 2) skb_probe_transport_header() sets transport header to this invalid thoff, even if pointing after skb valid data. 3) qdisc_pkt_len_init() reads out-of-bound data because it trusts tcp_hdrlen(skb) Possible fixes : - Full flow dissector validation before injecting bad DODGY packets in the stack. This approach was attempted here : https://patchwork.ozlabs.org/patch/ 861874/ - Have more robust functions in the core. This might be needed anyway for stable versions. This patch fixes the flow dissection issue. [1] CPU: 1 PID: 3144 Comm: syzkaller271204 Not tainted 4.15.0-rc4-mm1+ #49 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 print_address_description+0x73/0x250 mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:355 [inline] kasan_report+0x23b/0x360 mm/kasan/report.c:413 __asan_report_load2_noabort+0x14/0x20 mm/kasan/report.c:432 __tcp_hdrlen include/linux/tcp.h:35 [inline] tcp_hdrlen include/linux/tcp.h:40 [inline] qdisc_pkt_len_init net/core/dev.c:3160 [inline] __dev_queue_xmit+0x20d3/0x2200 net/core/dev.c:3465 dev_queue_xmit+0x17/0x20 net/core/dev.c:3554 packet_snd net/packet/af_packet.c:2943 [inline] packet_sendmsg+0x3ad5/0x60a0 net/packet/af_packet.c:2968 sock_sendmsg_nosec net/socket.c:628 [inline] sock_sendmsg+0xca/0x110 net/socket.c:638 sock_write_iter+0x31a/0x5d0 net/socket.c:907 call_write_iter include/linux/fs.h:1776 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x684/0x970 fs/read_write.c:482 vfs_write+0x189/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 entry_SYSCALL_64_fastpath+0x1f/0x96 Fixes: 34fad54c2537 ("net: __skb_flow_dissect() must cap its return value") Fixes: a6e544b0a88b ("flow_dissector: Jump to exit code in __skb_flow_dissect") Signed-off-by: Eric Dumazet <edumazet(a)google.com> Cc: Willem de Bruijn <willemb(a)google.com> Reported-by: syzbot <syzkaller(a)googlegroups.com> Acked-by: Jason Wang <jasowang(a)redhat.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/core/flow_dissector.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -492,8 +492,8 @@ ip_proto_again: out_good: ret = true; - key_control->thoff = (u16)nhoff; out: + key_control->thoff = min_t(u16, nhoff, skb ? skb->len : hlen); key_basic->n_proto = proto; key_basic->ip_proto = ip_proto; @@ -501,7 +501,6 @@ out: out_bad: ret = false; - key_control->thoff = min_t(u16, nhoff, skb ? skb->len : hlen); goto out; } EXPORT_SYMBOL(__skb_flow_dissect); Patches currently in stable-queue which might be from edumazet(a)google.com are queue-4.4/ipv6-fix-udpv6-sendmsg-crash-caused-by-too-small-mtu.patch queue-4.4/flow_dissector-properly-cap-thoff-field.patch queue-4.4/ipv6-ip6_make_skb-needs-to-clear-cork.base.dst.patch queue-4.4/dccp-don-t-restart-ccid2_hc_tx_rto_expire-if-sk-in-closed-state.patch queue-4.4/netfilter-restart-search-if-moved-to-other-chain.patch queue-4.4/net-qdisc_pkt_len_init-should-be-more-robust.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed state" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed state to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: dccp-don-t-restart-ccid2_hc_tx_rto_expire-if-sk-in-closed-state.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From foo@baz Mon Jan 29 10:14:57 CET 2018 From: Alexey Kodanev <alexey.kodanev(a)oracle.com> Date: Fri, 26 Jan 2018 15:14:16 +0300 Subject: dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed state From: Alexey Kodanev <alexey.kodanev(a)oracle.com> [ Upstream commit dd5684ecae3bd8e44b644f50e2c12c7e57fdfef5 ] ccid2_hc_tx_rto_expire() timer callback always restarts the timer again and can run indefinitely (unless it is stopped outside), and after commit 120e9dabaf55 ("dccp: defer ccid_hc_tx_delete() at dismantle time"), which moved ccid_hc_tx_delete() (also includes sk_stop_timer()) from dccp_destroy_sock() to sk_destruct(), this started to happen quite often. The timer prevents releasing the socket, as a result, sk_destruct() won't be called. Found with LTP/dccp_ipsec tests running on the bonding device, which later couldn't be unloaded after the tests were completed: unregister_netdevice: waiting for bond0 to become free. Usage count = 148 Fixes: 2a91aa396739 ("[DCCP] CCID2: Initial CCID2 (TCP-Like) implementation") Signed-off-by: Alexey Kodanev <alexey.kodanev(a)oracle.com> Reviewed-by: Eric Dumazet <edumazet(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- net/dccp/ccids/ccid2.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/dccp/ccids/ccid2.c +++ b/net/dccp/ccids/ccid2.c @@ -140,6 +140,9 @@ static void ccid2_hc_tx_rto_expire(unsig ccid2_pr_debug("RTO_EXPIRE\n"); + if (sk->sk_state == DCCP_CLOSED) + goto out; + /* back-off timer */ hc->tx_rto <<= 1; if (hc->tx_rto > DCCP_RTO_MAX) Patches currently in stable-queue which might be from alexey.kodanev(a)oracle.com are queue-4.4/dccp-don-t-restart-ccid2_hc_tx_rto_expire-if-sk-in-closed-state.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "x86/microcode/intel: Extend BDW late-loading further with LLC size check" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/microcode/intel: Extend BDW late-loading further with LLC size check to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-microcode-intel-extend-bdw-late-loading-further-with-llc-size-check.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 7e702d17ed138cf4ae7c00e8c00681ed464587c7 Mon Sep 17 00:00:00 2001 From: Jia Zhang <zhang.jia(a)linux.alibaba.com> Date: Tue, 23 Jan 2018 11:41:32 +0100 Subject: x86/microcode/intel: Extend BDW late-loading further with LLC size check From: Jia Zhang <zhang.jia(a)linux.alibaba.com> commit 7e702d17ed138cf4ae7c00e8c00681ed464587c7 upstream. Commit b94b73733171 ("x86/microcode/intel: Extend BDW late-loading with a revision check") reduced the impact of erratum BDF90 for Broadwell model 79. The impact can be reduced further by checking the size of the last level cache portion per core. Tony: "The erratum says the problem only occurs on the large-cache SKUs. So we only need to avoid the update if we are on a big cache SKU that is also running old microcode." For more details, see erratum BDF90 in document #334165 (Intel Xeon Processor E7-8800/4800 v4 Product Family Specification Update) from September 2017. Fixes: b94b73733171 ("x86/microcode/intel: Extend BDW late-loading with a revision check") Signed-off-by: Jia Zhang <zhang.jia(a)linux.alibaba.com> Signed-off-by: Borislav Petkov <bp(a)suse.de> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Acked-by: Tony Luck <tony.luck(a)intel.com> Link: https://lkml.kernel.org/r/1516321542-31161-1-git-send-email-zhang.jia@linux… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/kernel/cpu/microcode/intel.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) --- a/arch/x86/kernel/cpu/microcode/intel.c +++ b/arch/x86/kernel/cpu/microcode/intel.c @@ -40,6 +40,9 @@ #include <asm/setup.h> #include <asm/msr.h> +/* last level cache size per core */ +static int llc_size_per_core; + /* * Temporary microcode blobs pointers storage. We note here during early load * the pointers to microcode blobs we've got from whatever storage (detached @@ -1053,12 +1056,14 @@ static bool is_blacklisted(unsigned int /* * Late loading on model 79 with microcode revision less than 0x0b000021 - * may result in a system hang. This behavior is documented in item - * BDF90, #334165 (Intel Xeon Processor E7-8800/4800 v4 Product Family). + * and LLC size per core bigger than 2.5MB may result in a system hang. + * This behavior is documented in item BDF90, #334165 (Intel Xeon + * Processor E7-8800/4800 v4 Product Family). */ if (c->x86 == 6 && c->x86_model == INTEL_FAM6_BROADWELL_X && c->x86_mask == 0x01 && + llc_size_per_core > 2621440 && c->microcode < 0x0b000021) { pr_err_once("Erratum BDF90: late loading with revision < 0x0b000021 (0x%x) disabled.\n", c->microcode); pr_err_once("Please consider either early loading through initrd/built-in or a potential BIOS update.\n"); @@ -1125,6 +1130,15 @@ static struct microcode_ops microcode_in .microcode_fini_cpu = microcode_fini_cpu, }; +static int __init calc_llc_size_per_core(struct cpuinfo_x86 *c) +{ + u64 llc_size = c->x86_cache_size * 1024; + + do_div(llc_size, c->x86_max_cores); + + return (int)llc_size; +} + struct microcode_ops * __init init_intel_microcode(void) { struct cpuinfo_x86 *c = &boot_cpu_data; @@ -1135,6 +1149,8 @@ struct microcode_ops * __init init_intel return NULL; } + llc_size_per_core = calc_llc_size_per_core(c); + return &microcode_intel_ops; } Patches currently in stable-queue which might be from zhang.jia(a)linux.alibaba.com are queue-4.9/x86-microcode-intel-extend-bdw-late-loading-further-with-llc-size-check.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "perf/x86/amd/power: Do not load AMD power module on !AMD platforms" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled perf/x86/amd/power: Do not load AMD power module on !AMD platforms to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: perf-x86-amd-power-do-not-load-amd-power-module-on-amd-platforms.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 40d4071ce2d20840d224b4a77b5dc6f752c9ab15 Mon Sep 17 00:00:00 2001 From: Xiao Liang <xiliang(a)redhat.com> Date: Mon, 22 Jan 2018 14:12:52 +0800 Subject: perf/x86/amd/power: Do not load AMD power module on !AMD platforms From: Xiao Liang <xiliang(a)redhat.com> commit 40d4071ce2d20840d224b4a77b5dc6f752c9ab15 upstream. The AMD power module can be loaded on non AMD platforms, but unload fails with the following Oops: BUG: unable to handle kernel NULL pointer dereference at (null) IP: __list_del_entry_valid+0x29/0x90 Call Trace: perf_pmu_unregister+0x25/0xf0 amd_power_pmu_exit+0x1c/0xd23 [power] SyS_delete_module+0x1a8/0x2b0 ? exit_to_usermode_loop+0x8f/0xb0 entry_SYSCALL_64_fastpath+0x20/0x83 Return -ENODEV instead of 0 from the module init function if the CPU does not match. Fixes: c7ab62bfbe0e ("perf/x86/amd/power: Add AMD accumulated power reporting mechanism") Signed-off-by: Xiao Liang <xiliang(a)redhat.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Link: https://lkml.kernel.org/r/20180122061252.6394-1-xiliang@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/events/amd/power.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/events/amd/power.c +++ b/arch/x86/events/amd/power.c @@ -277,7 +277,7 @@ static int __init amd_power_pmu_init(voi int ret; if (!x86_match_cpu(cpu_match)) - return 0; + return -ENODEV; if (!boot_cpu_has(X86_FEATURE_ACC_POWER)) return -ENODEV; Patches currently in stable-queue which might be from xiliang(a)redhat.com are queue-4.9/perf-x86-amd-power-do-not-load-amd-power-module-on-amd-platforms.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "hrtimer: Reset hrtimer cpu base proper on CPU hotplug" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled hrtimer: Reset hrtimer cpu base proper on CPU hotplug to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: hrtimer-reset-hrtimer-cpu-base-proper-on-cpu-hotplug.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From d5421ea43d30701e03cadc56a38854c36a8b4433 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner <tglx(a)linutronix.de> Date: Fri, 26 Jan 2018 14:54:32 +0100 Subject: hrtimer: Reset hrtimer cpu base proper on CPU hotplug From: Thomas Gleixner <tglx(a)linutronix.de> commit d5421ea43d30701e03cadc56a38854c36a8b4433 upstream. The hrtimer interrupt code contains a hang detection and mitigation mechanism, which prevents that a long delayed hrtimer interrupt causes a continous retriggering of interrupts which prevent the system from making progress. If a hang is detected then the timer hardware is programmed with a certain delay into the future and a flag is set in the hrtimer cpu base which prevents newly enqueued timers from reprogramming the timer hardware prior to the chosen delay. The subsequent hrtimer interrupt after the delay clears the flag and resumes normal operation. If such a hang happens in the last hrtimer interrupt before a CPU is unplugged then the hang_detected flag is set and stays that way when the CPU is plugged in again. At that point the timer hardware is not armed and it cannot be armed because the hang_detected flag is still active, so nothing clears that flag. As a consequence the CPU does not receive hrtimer interrupts and no timers expire on that CPU which results in RCU stalls and other malfunctions. Clear the flag along with some other less critical members of the hrtimer cpu base to ensure starting from a clean state when a CPU is plugged in. Thanks to Paul, Sebastian and Anna-Maria for their help to get down to the root cause of that hard to reproduce heisenbug. Once understood it's trivial and certainly justifies a brown paperbag. Fixes: 41d2e4949377 ("hrtimer: Tune hrtimer_interrupt hang logic") Reported-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Sebastian Sewior <bigeasy(a)linutronix.de> Cc: Anna-Maria Gleixner <anna-maria(a)linutronix.de> Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801261447590.2067@nanos Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- kernel/time/hrtimer.c | 3 +++ 1 file changed, 3 insertions(+) --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -652,7 +652,9 @@ static void hrtimer_reprogram(struct hrt static inline void hrtimer_init_hres(struct hrtimer_cpu_base *base) { base->expires_next.tv64 = KTIME_MAX; + base->hang_detected = 0; base->hres_active = 0; + base->next_timer = NULL; } /* @@ -1610,6 +1612,7 @@ int hrtimers_prepare_cpu(unsigned int cp timerqueue_init_head(&cpu_base->clock_base[i].active); } + cpu_base->active_bases = 0; cpu_base->cpu = cpu; hrtimer_init_hres(cpu_base); return 0; Patches currently in stable-queue which might be from tglx(a)linutronix.de are queue-4.9/prevent-timer-value-0-for-mwaitx.patch queue-4.9/perf-x86-amd-power-do-not-load-amd-power-module-on-amd-platforms.patch queue-4.9/x86-asm-32-make-sync_core-handle-missing-cpuid-on-all-32-bit-kernels.patch queue-4.9/revert-module-add-retpoline-tag-to-vermagic.patch queue-4.9/x86-microcode-intel-extend-bdw-late-loading-further-with-llc-size-check.patch queue-4.9/hrtimer-reset-hrtimer-cpu-base-proper-on-cpu-hotplug.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "x86/microcode/intel: Extend BDW late-loading further with LLC size check" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/microcode/intel: Extend BDW late-loading further with LLC size check to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-microcode-intel-extend-bdw-late-loading-further-with-llc-size-check.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 7e702d17ed138cf4ae7c00e8c00681ed464587c7 Mon Sep 17 00:00:00 2001 From: Jia Zhang <zhang.jia(a)linux.alibaba.com> Date: Tue, 23 Jan 2018 11:41:32 +0100 Subject: x86/microcode/intel: Extend BDW late-loading further with LLC size check From: Jia Zhang <zhang.jia(a)linux.alibaba.com> commit 7e702d17ed138cf4ae7c00e8c00681ed464587c7 upstream. Commit b94b73733171 ("x86/microcode/intel: Extend BDW late-loading with a revision check") reduced the impact of erratum BDF90 for Broadwell model 79. The impact can be reduced further by checking the size of the last level cache portion per core. Tony: "The erratum says the problem only occurs on the large-cache SKUs. So we only need to avoid the update if we are on a big cache SKU that is also running old microcode." For more details, see erratum BDF90 in document #334165 (Intel Xeon Processor E7-8800/4800 v4 Product Family Specification Update) from September 2017. Fixes: b94b73733171 ("x86/microcode/intel: Extend BDW late-loading with a revision check") Signed-off-by: Jia Zhang <zhang.jia(a)linux.alibaba.com> Signed-off-by: Borislav Petkov <bp(a)suse.de> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Acked-by: Tony Luck <tony.luck(a)intel.com> Link: https://lkml.kernel.org/r/1516321542-31161-1-git-send-email-zhang.jia@linux… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/kernel/cpu/microcode/intel.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) --- a/arch/x86/kernel/cpu/microcode/intel.c +++ b/arch/x86/kernel/cpu/microcode/intel.c @@ -39,6 +39,9 @@ #include <asm/setup.h> #include <asm/msr.h> +/* last level cache size per core */ +static int llc_size_per_core; + static unsigned long mc_saved_in_initrd[MAX_UCODE_COUNT]; static struct mc_saved_data { unsigned int mc_saved_count; @@ -996,12 +999,14 @@ static bool is_blacklisted(unsigned int /* * Late loading on model 79 with microcode revision less than 0x0b000021 - * may result in a system hang. This behavior is documented in item - * BDF90, #334165 (Intel Xeon Processor E7-8800/4800 v4 Product Family). + * and LLC size per core bigger than 2.5MB may result in a system hang. + * This behavior is documented in item BDF90, #334165 (Intel Xeon + * Processor E7-8800/4800 v4 Product Family). */ if (c->x86 == 6 && c->x86_model == 79 && c->x86_mask == 0x01 && + llc_size_per_core > 2621440 && c->microcode < 0x0b000021) { pr_err_once("Erratum BDF90: late loading with revision < 0x0b000021 (0x%x) disabled.\n", c->microcode); pr_err_once("Please consider either early loading through initrd/built-in or a potential BIOS update.\n"); @@ -1068,6 +1073,15 @@ static struct microcode_ops microcode_in .microcode_fini_cpu = microcode_fini_cpu, }; +static int __init calc_llc_size_per_core(struct cpuinfo_x86 *c) +{ + u64 llc_size = c->x86_cache_size * 1024; + + do_div(llc_size, c->x86_max_cores); + + return (int)llc_size; +} + struct microcode_ops * __init init_intel_microcode(void) { struct cpuinfo_x86 *c = &boot_cpu_data; @@ -1078,6 +1092,8 @@ struct microcode_ops * __init init_intel return NULL; } + llc_size_per_core = calc_llc_size_per_core(c); + return &microcode_intel_ops; } Patches currently in stable-queue which might be from zhang.jia(a)linux.alibaba.com are queue-4.4/x86-microcode-intel-extend-bdw-late-loading-further-with-llc-size-check.patch

7 years, 7 months

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[Linux-stable-mirror] Patch "hrtimer: Reset hrtimer cpu base proper on CPU hotplug" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled hrtimer: Reset hrtimer cpu base proper on CPU hotplug to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: hrtimer-reset-hrtimer-cpu-base-proper-on-cpu-hotplug.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From d5421ea43d30701e03cadc56a38854c36a8b4433 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner <tglx(a)linutronix.de> Date: Fri, 26 Jan 2018 14:54:32 +0100 Subject: hrtimer: Reset hrtimer cpu base proper on CPU hotplug From: Thomas Gleixner <tglx(a)linutronix.de> commit d5421ea43d30701e03cadc56a38854c36a8b4433 upstream. The hrtimer interrupt code contains a hang detection and mitigation mechanism, which prevents that a long delayed hrtimer interrupt causes a continous retriggering of interrupts which prevent the system from making progress. If a hang is detected then the timer hardware is programmed with a certain delay into the future and a flag is set in the hrtimer cpu base which prevents newly enqueued timers from reprogramming the timer hardware prior to the chosen delay. The subsequent hrtimer interrupt after the delay clears the flag and resumes normal operation. If such a hang happens in the last hrtimer interrupt before a CPU is unplugged then the hang_detected flag is set and stays that way when the CPU is plugged in again. At that point the timer hardware is not armed and it cannot be armed because the hang_detected flag is still active, so nothing clears that flag. As a consequence the CPU does not receive hrtimer interrupts and no timers expire on that CPU which results in RCU stalls and other malfunctions. Clear the flag along with some other less critical members of the hrtimer cpu base to ensure starting from a clean state when a CPU is plugged in. Thanks to Paul, Sebastian and Anna-Maria for their help to get down to the root cause of that hard to reproduce heisenbug. Once understood it's trivial and certainly justifies a brown paperbag. Fixes: 41d2e4949377 ("hrtimer: Tune hrtimer_interrupt hang logic") Reported-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Sebastian Sewior <bigeasy(a)linutronix.de> Cc: Anna-Maria Gleixner <anna-maria(a)linutronix.de> Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801261447590.2067@nanos Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- kernel/time/hrtimer.c | 3 +++ 1 file changed, 3 insertions(+) --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -669,7 +669,9 @@ static void hrtimer_reprogram(struct hrt static inline void hrtimer_init_hres(struct hrtimer_cpu_base *base) { base->expires_next.tv64 = KTIME_MAX; + base->hang_detected = 0; base->hres_active = 0; + base->next_timer = NULL; } /* @@ -1615,6 +1617,7 @@ static void init_hrtimers_cpu(int cpu) timerqueue_init_head(&cpu_base->clock_base[i].active); } + cpu_base->active_bases = 0; cpu_base->cpu = cpu; hrtimer_init_hres(cpu_base); } Patches currently in stable-queue which might be from tglx(a)linutronix.de are queue-4.4/prevent-timer-value-0-for-mwaitx.patch queue-4.4/x86-ioapic-fix-incorrect-pointers-in-ioapic_setup_resources.patch queue-4.4/x86-asm-32-make-sync_core-handle-missing-cpuid-on-all-32-bit-kernels.patch queue-4.4/timers-plug-locking-race-vs.-timer-migration.patch queue-4.4/x86-cpu-intel-introduce-macros-for-intel-family-numbers.patch queue-4.4/x86-retpoline-fill-rsb-on-context-switch-for-affected-cpus.patch queue-4.4/revert-module-add-retpoline-tag-to-vermagic.patch queue-4.4/x86-microcode-intel-extend-bdw-late-loading-further-with-llc-size-check.patch queue-4.4/time-avoid-undefined-behaviour-in-ktime_add_safe.patch queue-4.4/sched-deadline-use-the-revised-wakeup-rule-for-suspending-constrained-dl-tasks.patch queue-4.4/hrtimer-reset-hrtimer-cpu-base-proper-on-cpu-hotplug.patch

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