May 2020 - Linux-stable-mirror

by chenxb_99091＠126.com

From: Xuebing Chen <chenxb_99091(a)126.com> In linux-4.4.y,the <include/drm/drm_crtc.h> provides drm_for_each_plane_mask macro and plane_mask is defined as bitmask of plane indices, such as 1 << drm_plane_index(plane). There is an error setting of plane_mask in pan_display_atomic() function. Please backport the following patch to the 4.4.y kernel stable tree: commit 7118fd9bd975a9f3093239d4c0f4e15356b57fab ("drm/fb-helper: Use proper plane mask for fb cleanup") The above patch fixes error setting of plane_mask in pan_display_atomic() function. Cc: stable(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Signed-off-by: Xuebing Chen <chenxb_99091(a)126.com>

4 years, 6 months

2
1
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[4.19.124 V1] mmc: core: Fix recursive locking issue in CQE recovery path

by Sarthak Garg

[ Upstream commit 39a22f73744d5baee30b5f134ae2e30b668b66ed ] Consider the following stack trace -001|raw_spin_lock_irqsave -002|mmc_blk_cqe_complete_rq -003|__blk_mq_complete_request(inline) -003|blk_mq_complete_request(rq) -004|mmc_cqe_timed_out(inline) -004|mmc_mq_timed_out mmc_mq_timed_out acquires the queue_lock for the first time. The mmc_blk_cqe_complete_rq function also tries to acquire the same queue lock resulting in recursive locking where the task is spinning for the same lock which it has already acquired leading to watchdog bark. Fix this issue with the lock only for the required critical section. Cc: <stable(a)vger.kernel.org> Fixes: 1e8e55b67030 ("mmc: block: Add CQE support") Suggested-by: Sahitya Tummala <stummala(a)codeaurora.org> Signed-off-by: Sarthak Garg <sartgarg(a)codeaurora.org> Acked-by: Adrian Hunter <adrian.hunter(a)intel.com> Link: https://lore.kernel.org/r/1588868135-31783-1-git-send-email-vbadigan@codeau… Signed-off-by: Ulf Hansson <ulf.hansson(a)linaro.org> --- drivers/mmc/core/queue.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c index 03f3d9c..2a78816 100644 --- a/drivers/mmc/core/queue.c +++ b/drivers/mmc/core/queue.c @@ -108,7 +108,7 @@ static enum blk_eh_timer_return mmc_cqe_timed_out(struct request *req) case MMC_ISSUE_DCMD: if (host->cqe_ops->cqe_timeout(host, mrq, &recovery_needed)) { if (recovery_needed) - __mmc_cqe_recovery_notifier(mq); + mmc_cqe_recovery_notifier(mrq); return BLK_EH_RESET_TIMER; } /* The request has gone already */ @@ -125,18 +125,13 @@ static enum blk_eh_timer_return mmc_mq_timed_out(struct request *req, struct request_queue *q = req->q; struct mmc_queue *mq = q->queuedata; unsigned long flags; - int ret; + bool ignore_tout; spin_lock_irqsave(q->queue_lock, flags); - - if (mq->recovery_needed || !mq->use_cqe) - ret = BLK_EH_RESET_TIMER; - else - ret = mmc_cqe_timed_out(req); - + ignore_tout = mq->recovery_needed || !mq->use_cqe; spin_unlock_irqrestore(q->queue_lock, flags); - return ret; + return ignore_tout ? BLK_EH_RESET_TIMER : mmc_cqe_timed_out(req); } static void mmc_mq_recovery_handler(struct work_struct *work) -- 2.7.4

4 years, 6 months

2
1
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[5.4-stable PATCH 0/7] libnvdimm: Cross-arch compatible namespace alignment

by Dan Williams

Hello stable team, These patches have been shipping in mainline since v5.7-rc1 with no reported issues. They address long standing problems in libnvdimm's handling of namespace provisioning relative to alignment constraints including crashes trying to even load the driver on some PowerPC configurations. I did fold one build fix [1] into "libnvdimm/region: Introduce an 'align' attribute" so as to not convey the bisection breakage to -stable. Please consider them for v5.4-stable. They do pass the latest version of the ndctl unit tests. [1]: 04ff4863e126 libnvdimm/region: Fix build error --- Original cover letter for the series: Aneesh reports that PowerPC requires 16MiB alignment for the address range passed to devm_memremap_pages(), and Jeff reports that it is possible to create a misaligned namespace which blocks future namespace creation in that region. Both of these issues require namespace alignment to be managed at the region level rather than padding at the namespace level which has been a broken approach to date. Introduce memremap_compat_align() to indicate the hard requirements of an arch's memremap_pages() implementation. Use the maximum known memremap_compat_align() to set the default namespace alignment for libnvdimm. Consult that alignment when allocating free space. Finally, allow the default region alignment to be overridden to maintain the same namespace creation capability as previous kernels (modulo dax operation not being supported with a non-zero start_pad). --- Aneesh Kumar K.V (1): libnvdimm/pfn_dev: Don't clear device memmap area during generic namespace probe Dan Williams (6): mm/memremap_pages: Kill unused __devm_memremap_pages() mm/memremap_pages: Introduce memremap_compat_align() libnvdimm/pfn: Prevent raw mode fallback if pfn-infoblock valid libnvdimm/namespace: Enforce memremap_compat_align() libnvdimm/region: Introduce NDD_LABELING libnvdimm/region: Introduce an 'align' attribute arch/powerpc/Kconfig | 1 arch/powerpc/mm/ioremap.c | 21 +++++ arch/powerpc/platforms/pseries/papr_scm.c | 2 drivers/acpi/nfit/core.c | 4 + drivers/nvdimm/dimm.c | 2 drivers/nvdimm/dimm_devs.c | 95 +++++++++++++++++---- drivers/nvdimm/namespace_devs.c | 28 ++++++ drivers/nvdimm/nd.h | 3 - drivers/nvdimm/pfn.h | 12 +++ drivers/nvdimm/pfn_devs.c | 48 +++++++++-- drivers/nvdimm/region_devs.c | 130 ++++++++++++++++++++++++++--- include/linux/io.h | 2 include/linux/libnvdimm.h | 2 include/linux/memremap.h | 8 ++ include/linux/mmzone.h | 1 lib/Kconfig | 3 + mm/memremap.c | 23 +++++ 17 files changed, 335 insertions(+), 50 deletions(-) base-commit: 1cdaf895c99d319c0007d0b62818cf85fc4b087f

4 years, 6 months

3
13
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[PATCH] parisc: Fix kernel panic in mem_init()

by Helge Deller

Dear stable kernel maintainers, can you please apply this patch to all 3.x and 4.x stable kernels? Based on upstream commit bf71bc16e02162388808949b179d59d0b571b965 which doesn't apply out of the box on older kernels. ----------- The Debian kernel v5.6 triggers this kernel panic: Kernel panic - not syncing: Bad Address (null pointer deref?) Bad Address (null pointer deref?): Code=26 (Data memory access rights trap) at addr 0000000000000000 CPU: 0 PID: 0 Comm: swapper Not tainted 5.6.0-2-parisc64 #1 Debian 5.6.14-1 IAOQ[0]: mem_init+0xb0/0x150 IAOQ[1]: mem_init+0xb4/0x150 RP(r2): start_kernel+0x6c8/0x1190 Backtrace: [<0000000040101ab4>] start_kernel+0x6c8/0x1190 [<0000000040108574>] start_parisc+0x158/0x1b8 on a HP-PARISC rp3440 machine with this memory layout: Memory Ranges: 0) Start 0x0000000000000000 End 0x000000003fffffff Size 1024 MB 1) Start 0x0000004040000000 End 0x00000040ffdfffff Size 3070 MB Fix the crash by avoiding virt_to_page() and similar functions in mem_init() until the memory zones have been fully set up. Signed-off-by: Helge Deller <deller(a)gmx.de> diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c index aae9b0d71c1e..10a52664e29f 100644 --- a/arch/parisc/mm/init.c +++ b/arch/parisc/mm/init.c @@ -607,7 +607,7 @@ void __init mem_init(void) > BITS_PER_LONG); high_memory = __va((max_pfn << PAGE_SHIFT)); - set_max_mapnr(page_to_pfn(virt_to_page(high_memory - 1)) + 1); + set_max_mapnr(max_low_pfn); free_all_bootmem(); #ifdef CONFIG_PA11

4 years, 6 months

2
1
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[PATCH] ext4: avoid utf8_strncasecmp() with unstable name

by Eric Biggers

From: Eric Biggers <ebiggers(a)google.com> If the dentry name passed to ->d_compare() fits in dentry::d_iname, then it may be concurrently modified by a rename. This can cause undefined behavior (possibly out-of-bounds memory accesses or crashes) in utf8_strncasecmp(), since fs/unicode/ isn't written to handle strings that may be concurrently modified. Fix this by first copying the filename to a stack buffer if needed. This way we get a stable snapshot of the filename. Fixes: b886ee3e778e ("ext4: Support case-insensitive file name lookups") Cc: <stable(a)vger.kernel.org> # v5.2+ Cc: Al Viro <viro(a)zeniv.linux.org.uk> Cc: Daniel Rosenberg <drosen(a)google.com> Cc: Gabriel Krisman Bertazi <krisman(a)collabora.co.uk> Signed-off-by: Eric Biggers <ebiggers(a)google.com> --- fs/ext4/dir.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index c654205f648dd..19aef8328bb18 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -675,6 +675,7 @@ static int ext4_d_compare(const struct dentry *dentry, unsigned int len, struct qstr qstr = {.name = str, .len = len }; const struct dentry *parent = READ_ONCE(dentry->d_parent); const struct inode *inode = READ_ONCE(parent->d_inode); + char strbuf[DNAME_INLINE_LEN]; if (!inode || !IS_CASEFOLDED(inode) || !EXT4_SB(inode->i_sb)->s_encoding) { @@ -683,6 +684,22 @@ static int ext4_d_compare(const struct dentry *dentry, unsigned int len, return memcmp(str, name->name, len); } + /* + * If the dentry name is stored in-line, then it may be concurrently + * modified by a rename. If this happens, the VFS will eventually retry + * the lookup, so it doesn't matter what ->d_compare() returns. + * However, it's unsafe to call utf8_strncasecmp() with an unstable + * string. Therefore, we have to copy the name into a temporary buffer. + */ + if (len <= DNAME_INLINE_LEN - 1) { + unsigned int i; + + for (i = 0; i < len; i++) + strbuf[i] = READ_ONCE(str[i]); + strbuf[len] = 0; + qstr.name = strbuf; + } + return ext4_ci_compare(inode, name, &qstr, false); } -- 2.26.2

4 years, 6 months

4
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[PATCH] RISC-V: Don't mark init section as non-executable

by Anup Patel

The head text section (i.e. _start, secondary_start_sbi, etc) and the init section fall under same page table level-1 mapping. Currently, the runtime CPU hotplug is broken because we are marking init section as non-executable which in-turn marks head text section as non-executable. Further investigating other architectures, it seems marking the init section as non-executable is redundant because the init section pages are anyway poisoned and freed. To fix broken runtime CPU hotplug, we simply remove the code marking the init section as non-executable. Fixes: d27c3c90817e ("riscv: add STRICT_KERNEL_RWX support") Cc: stable(a)vger.kernel.org Signed-off-by: Anup Patel <anup.patel(a)wdc.com> --- arch/riscv/mm/init.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 736de6c8739f..e0f8ccab8a41 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -482,11 +482,6 @@ static void __init setup_vm_final(void) void free_initmem(void) { - unsigned long init_begin = (unsigned long)__init_begin; - unsigned long init_end = (unsigned long)__init_end; - - /* Make the region as non-execuatble. */ - set_memory_nx(init_begin, (init_end - init_begin) >> PAGE_SHIFT); free_initmem_default(POISON_FREE_INITMEM); } -- 2.25.1

4 years, 6 months

2
1
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[PATCH AUTOSEL 4.19 01/19] ARM: dts: rockchip: fix phy nodename for rk3228-evb

by Sasha Levin

From: Johan Jonker <jbx6244(a)gmail.com> [ Upstream commit 287e0d538fcec2f6e8eb1e565bf0749f3b90186d ] A test with the command below gives for example this error: arch/arm/boot/dts/rk3228-evb.dt.yaml: phy@0: '#phy-cells' is a required property The phy nodename is normally used by a phy-handle. This node is however compatible with "ethernet-phy-id1234.d400", "ethernet-phy-ieee802.3-c22" which is just been added to 'ethernet-phy.yaml'. So change nodename to 'ethernet-phy' for which '#phy-cells' is not a required property make ARCH=arm dtbs_check DT_SCHEMA_FILES=~/.local/lib/python3.5/site-packages/dtschema/schemas/ phy/phy-provider.yaml Signed-off-by: Johan Jonker <jbx6244(a)gmail.com> Signed-off-by: Heiko Stuebner <heiko(a)sntech.de> Link: https://lore.kernel.org/r/20200416170321.4216-1-jbx6244@gmail.com Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- arch/arm/boot/dts/rk3228-evb.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/rk3228-evb.dts b/arch/arm/boot/dts/rk3228-evb.dts index 5670b33fd1bd..aed879db6c15 100644 --- a/arch/arm/boot/dts/rk3228-evb.dts +++ b/arch/arm/boot/dts/rk3228-evb.dts @@ -46,7 +46,7 @@ #address-cells = <1>; #size-cells = <0>; - phy: phy@0 { + phy: ethernet-phy@0 { compatible = "ethernet-phy-id1234.d400", "ethernet-phy-ieee802.3-c22"; reg = <0>; clocks = <&cru SCLK_MAC_PHY>; -- 2.25.1

4 years, 6 months

2
19
0 0

[PATCH AUTOSEL 5.4 01/26] ARC: Fix ICCM & DCCM runtime size checks

by Sasha Levin

From: Eugeniy Paltsev <Eugeniy.Paltsev(a)synopsys.com> [ Upstream commit 43900edf67d7ef3ac8909854d75b8a1fba2d570c ] As of today the ICCM and DCCM size checks are incorrectly using mismatched units (KiB checked against bytes). The CONFIG_ARC_DCCM_SZ and CONFIG_ARC_ICCM_SZ are in KiB, but the size calculated in runtime and stored in cpu->dccm.sz and cpu->iccm.sz is in bytes. Fix that. Reported-by: Paul Greco <pmgreco(a)us.ibm.com> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev(a)synopsys.com> Signed-off-by: Vineet Gupta <vgupta(a)synopsys.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- arch/arc/kernel/setup.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 7ee89dc61f6e..23dc002aa574 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -12,6 +12,7 @@ #include <linux/clocksource.h> #include <linux/console.h> #include <linux/module.h> +#include <linux/sizes.h> #include <linux/cpu.h> #include <linux/of_fdt.h> #include <linux/of.h> @@ -409,12 +410,12 @@ static void arc_chk_core_config(void) if ((unsigned int)__arc_dccm_base != cpu->dccm.base_addr) panic("Linux built with incorrect DCCM Base address\n"); - if (CONFIG_ARC_DCCM_SZ != cpu->dccm.sz) + if (CONFIG_ARC_DCCM_SZ * SZ_1K != cpu->dccm.sz) panic("Linux built with incorrect DCCM Size\n"); #endif #ifdef CONFIG_ARC_HAS_ICCM - if (CONFIG_ARC_ICCM_SZ != cpu->iccm.sz) + if (CONFIG_ARC_ICCM_SZ * SZ_1K != cpu->iccm.sz) panic("Linux built with incorrect ICCM Size\n"); #endif -- 2.25.1

4 years, 6 months

2
26
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[PATCH 5.6 000/126] 5.6.15-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 5.6.15 release. There are 126 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 Thu, 28 May 2020 18:36:22 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.6.15-rc1… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.6.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 5.6.15-rc1 Phil Auld <pauld(a)redhat.com> sched/fair: Fix enqueue_task_fair() warning some more Vincent Guittot <vincent.guittot(a)linaro.org> sched/fair: Fix reordering of enqueue/dequeue_task_fair() Vincent Guittot <vincent.guittot(a)linaro.org> sched/fair: Reorder enqueue/dequeue_task_fair path Andrii Nakryiko <andriin(a)fb.com> bpf: Prevent mmap()'ing read-only maps as writable David Howells <dhowells(a)redhat.com> rxrpc: Fix ack discard David Howells <dhowells(a)redhat.com> rxrpc: Trace discarded ACKs Josh Poimboeuf <jpoimboe(a)redhat.com> x86/unwind/orc: Fix unwind_get_return_address_ptr() for inactive tasks Jakub Sitnicki <jakub(a)cloudflare.com> flow_dissector: Drop BPF flow dissector prog ref on netns cleanup Philipp Rudo <prudo(a)linux.ibm.com> s390/kexec_file: fix initrd location for kdump kernel Loïc Yhuel <loic.yhuel(a)gmail.com> tpm: check event log version before reading final events Qiushi Wu <wu000273(a)umn.edu> rxrpc: Fix a memory leak in rxkad_verify_response() David Howells <dhowells(a)redhat.com> rxrpc: Fix the excessive initial retransmission timeout Dan Carpenter <dan.carpenter(a)oracle.com> iio: imu: st_lsm6dsx: unlock on error in st_lsm6dsx_shub_write_raw() Uladzislau Rezki <uladzislau.rezki(a)sony.com> z3fold: fix use-after-free when freeing handles Mike Rapoport <rppt(a)linux.ibm.com> sparc32: fix page table traversal in srmmu_nocache_init() Mike Rapoport <rppt(a)linux.ibm.com> sparc32: use PUD rather than PGD to get PMD in srmmu_nocache_init() Arnd Bergmann <arnd(a)arndb.de> sh: include linux/time_types.h for sockios Marco Elver <elver(a)google.com> kasan: disable branch tracing for core runtime John Hubbard <jhubbard(a)nvidia.com> rapidio: fix an error in get_user_pages_fast() error handling David Hildenbrand <david(a)redhat.com> device-dax: don't leak kernel memory to user space after unloading kmem Gerald Schaefer <gerald.schaefer(a)de.ibm.com> s390/kaslr: add support for R_390_JMP_SLOT relocation type Niklas Schnelle <schnelle(a)linux.ibm.com> s390/pci: Fix s390_mmio_read/write with MIO Wei Yongjun <weiyongjun1(a)huawei.com> ipack: tpci200: fix error return code in tpci200_register() Alexander Usyskin <alexander.usyskin(a)intel.com> mei: release me_cl object reference Sagar Shrikant Kadam <sagar.kadam(a)sifive.com> tty: serial: add missing spin_lock_init for SiFive serial console Klaus Doth <kdlnx(a)doth.eu> misc: rtsx: Add short delay after exit from ASPM Saravana Kannan <saravanak(a)google.com> driver core: Fix handling of SYNC_STATE_ONLY + STATELESS device links Saravana Kannan <saravanak(a)google.com> driver core: Fix SYNC_STATE_ONLY device link implementation Gregory CLEMENT <gregory.clement(a)bootlin.com> iio: adc: ti-ads8344: Fix channel selection Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> iio: dac: vf610: Fix an error handling path in 'vf610_dac_probe()' Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> iio: sca3000: Remove an erroneous 'get_device()' Fabrice Gasnier <fabrice.gasnier(a)st.com> iio: adc: stm32-dfsdm: fix device used to request dma Fabrice Gasnier <fabrice.gasnier(a)st.com> iio: adc: stm32-adc: fix device used to request dma Oscar Carter <oscar.carter(a)gmx.com> staging: greybus: Fix uninitialized scalar variable Wei Yongjun <weiyongjun1(a)huawei.com> staging: kpc2000: fix error return code in kp2000_pcie_probe() Dan Carpenter <dan.carpenter(a)oracle.com> staging: wfx: unlock on error path Dragos Bogdan <dragos.bogdan(a)analog.com> staging: iio: ad2s1210: Fix SPI reading Kees Cook <keescook(a)chromium.org> kbuild: Remove debug info from kallsyms linking Steven Rostedt (VMware) <rostedt(a)goodmis.org> tools/bootconfig: Fix apply_xbc() to return zero on success Sasha Levin <sashal(a)kernel.org> Revert "driver core: platform: Initialize dma_parms for platform devices" Michael S. Tsirkin <mst(a)redhat.com> virtio-balloon: Revert "virtio-balloon: Switch back to OOM handler for VIRTIO_BALLOON_F_DEFLATE_ON_OOM" Bob Peterson <rpeterso(a)redhat.com> Revert "gfs2: Don't demote a glock until its revokes are written" Chris Wilson <chris(a)chris-wilson.co.uk> drm/i915: Propagate error from completed fences Colin Xu <colin.xu(a)intel.com> drm/i915/gvt: Init DPLL/DDI vreg for virtual display instead of inheritance. Ilya Dryomov <idryomov(a)gmail.com> vsprintf: don't obfuscate NULL and error pointers Cristian Ciocaltea <cristian.ciocaltea(a)gmail.com> dmaengine: owl: Use correct lock in owl_dma_get_pchan() Dave Jiang <dave.jiang(a)intel.com> dmaengine: idxd: fix interrupt completion after unmasking Vladimir Murzin <vladimir.murzin(a)arm.com> dmaengine: dmatest: Restore default for channel Dan Carpenter <dan.carpenter(a)oracle.com> drm/etnaviv: Fix a leak in submit_pin_objects() Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> dmaengine: tegra210-adma: Fix an error handling path in 'tegra_adma_probe()' Xiyu Yang <xiyuyang19(a)fudan.edu.cn> apparmor: Fix aa_label refcnt leak in policy_update Xiyu Yang <xiyuyang19(a)fudan.edu.cn> apparmor: fix potential label refcnt leak in aa_change_profile Navid Emamdoost <navid.emamdoost(a)gmail.com> apparmor: Fix use-after-free in aa_audit_rule_init Venkata Narendra Kumar Gutta <vnkgutta(a)codeaurora.org> pinctrl: qcom: Add affinity callbacks to msmgpio IRQ chip Christian Gmeiner <christian.gmeiner(a)gmail.com> drm/etnaviv: fix perfmon domain interation Michael Ellerman <mpe(a)ellerman.id.au> powerpc/64s: Disable STRICT_KERNEL_RWX Keno Fischer <keno(a)juliacomputing.com> arm64: Fix PTRACE_SYSEMU semantics Bodo Stroesser <bstroesser(a)ts.fujitsu.com> scsi: target: Put lun_ref at end of tmr processing Ewan D. Milne <emilne(a)redhat.com> scsi: qla2xxx: Do not log message when reading port speed via sysfs PeiSen Hou <pshou(a)realtek.com> ALSA: hda/realtek - Add more fixup entries for Clevo machines Christian Lachner <gladiac(a)gmail.com> ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Xtreme Brent Lu <brent.lu(a)intel.com> ALSA: pcm: fix incorrect hw_base increase Scott Bahling <sbahling(a)suse.com> ALSA: iec1712: Initialize STDSP24 properly when using the model=staudio option Daniel Borkmann <daniel(a)iogearbox.net> bpf: Add bpf_probe_read_{user, kernel}_str() to do_refine_retval_range Daniel Borkmann <daniel(a)iogearbox.net> bpf: Restrict bpf_probe_read{, str}() only to archs where they work Jian-Hong Pan <jian-hong(a)endlessm.com> ALSA: hda/realtek: Enable headset mic of ASUS UX581LV with ALC295 Jian-Hong Pan <jian-hong(a)endlessm.com> ALSA: hda/realtek - Enable headset mic of ASUS UX550GE with ALC295 Chris Chiu <chiu(a)endlessm.com> ALSA: hda/realtek - Enable headset mic of ASUS GL503VM with ALC295 Mike Pozulp <pozulp.kernel(a)gmail.com> ALSA: hda/realtek: Add quirk for Samsung Notebook Kailang Yang <kailang(a)realtek.com> ALSA: hda/realtek - Add HP new mute led supported for ALC236 Kailang Yang <kailang(a)realtek.com> ALSA: hda/realtek - Add supported new mute Led for HP Aymeric Agon-Rambosson <aymeric.agon(a)yandex.com> scripts/gdb: repair rb_first() and rb_last() Yunfeng Ye <yeyunfeng(a)huawei.com> tools/bootconfig: Fix resource leak in apply_xbc() Thomas Gleixner <tglx(a)linutronix.de> ARM: futex: Address build warning Peter Xu <peterx(a)redhat.com> KVM: selftests: Fix build for evmcs.h Aurabindo Pillai <aurabindo.pillai(a)amd.com> drm/amd/display: Prevent dpcd reads with passive dongles Roman Li <roman.li(a)amd.com> drm/amd/display: fix counter in wait_for_no_pipes_pending Joerg Roedel <jroedel(a)suse.de> iommu/amd: Call domain_flush_complete() in update_domain() Joerg Roedel <jroedel(a)suse.de> iommu/amd: Do not loop forever when trying to increase address space Hans de Goede <hdegoede(a)redhat.com> platform/x86: asus-nb-wmi: Do not load on Asus T100TA and T200TA Alan Stern <stern(a)rowland.harvard.edu> USB: core: Fix misleading driver bug report Maxim Petrov <mmrmaximuzz(a)gmail.com> stmmac: fix pointer check after utilization in stmmac_interrupt Wu Bo <wubo40(a)huawei.com> ceph: fix double unlock in handle_cap_export() Hans de Goede <hdegoede(a)redhat.com> HID: quirks: Add HID_QUIRK_NO_INIT_REPORTS quirk for Dell K12A keyboard-dock Yoshiyuki Kurauchi <ahochauwaaaaa(a)gmail.com> gtp: set NLM_F_MULTI flag in gtp_genl_dump_pdp() Thomas Gleixner <tglx(a)linutronix.de> x86/apic: Move TSC deadline timer debug printk Shuah Khan <skhan(a)linuxfoundation.org> selftests: fix kvm relocatable native/cross builds and installs Alan Maguire <alan.maguire(a)oracle.com> ftrace/selftest: make unresolved cases cause failure if --fail-unresolved set Juliet Kim <julietk(a)linux.vnet.ibm.com> ibmvnic: Skip fatal error reset after passive init Daniel Playfair Cal <daniel.playfair.cal(a)gmail.com> HID: i2c-hid: reset Synaptics SYNA2393 on resume Tyrel Datwyler <tyreld(a)linux.ibm.com> scsi: ibmvscsi: Fix WARN_ON during event pool release Gavin Shan <gshan(a)redhat.com> net/ena: Fix build warning in ena_xdp_set() James Hilliard <james.hilliard1(a)gmail.com> component: Silence bind error on -EPROBE_DEFER Richard Clark <richard.xnu.clark(a)gmail.com> aquantia: Fix the media type of AQC100 ethernet controller in the driver Stefano Garzarella <sgarzare(a)redhat.com> vhost/vsock: fix packet delivery order to monitoring devices Xiyu Yang <xiyuyang19(a)fudan.edu.cn> configfs: fix config_item refcnt leak in configfs_rmdir() Quinn Tran <qutran(a)marvell.com> scsi: qla2xxx: Delete all sessions before unregister local nvme port Arun Easi <aeasi(a)marvell.com> scsi: qla2xxx: Fix hang when issuing nvme disconnect-all in NPIV Jiri Kosina <jkosina(a)suse.cz> HID: alps: ALPS_1657 is too specific; use U1_UNICORN_LEGACY instead Artem Borisov <dedsa2002(a)gmail.com> HID: alps: Add AUI1657 device ID Fabian Schindlatz <fabian.schindlatz(a)fau.de> HID: logitech: Add support for Logitech G11 extra keys Sebastian Reichel <sebastian.reichel(a)collabora.com> HID: multitouch: add eGalaxTouch P80H84 support Frédéric Pierret (fepitre) <frederic.pierret(a)qubes-os.org> gcc-common.h: Update for GCC 10 Masahiro Yamada <masahiroy(a)kernel.org> net: drop_monitor: use IS_REACHABLE() to guard net_dm_hw_report() Masahiro Yamada <masahiroy(a)kernel.org> kbuild: avoid concurrency issue in parallel building dtbs and dtbs_check Joerg Roedel <jroedel(a)suse.de> iommu: Fix deferred domain attachment Ricardo Ribalda Delgado <ribalda(a)kernel.org> mtd: Fix mtd not registered due to nvmem name collision David Howells <dhowells(a)redhat.com> afs: Don't unlock fetched data pages until the op completes successfully Richard Weinberger <richard(a)nod.at> ubi: Fix seq_file usage in detailed_erase_block_info debugfs file Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> i2c: mux: demux-pinctrl: Fix an error handling path in 'i2c_demux_pinctrl_probe()' Dan Carpenter <dan.carpenter(a)oracle.com> evm: Fix a small race in init_desc() Raul E Rangel <rrangel(a)chromium.org> iommu/amd: Fix get_acpihid_device_id() Alexander Monakov <amonakov(a)ispras.ru> iommu/amd: Fix over-read of ACPI UID from IVRS table Alain Volmat <alain.volmat(a)st.com> i2c: fix missing pm_runtime_put_sync in i2c_device_probe Christoph Hellwig <hch(a)lst.de> ubifs: remove broken lazytime support Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> pipe: Fix pipe_full() test in opipe_prep(). Al Viro <viro(a)zeniv.linux.org.uk> fix multiplication overflow in copy_fdtable() Miquel Raynal <miquel.raynal(a)bootlin.com> mtd: spinand: Propagate ECC information to the MTD structure Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> ACPI: EC: PM: Avoid flushing EC work when EC GPE is inactive Eric Biggers <ebiggers(a)google.com> ubifs: fix wrong use of crypto_shash_descsize() Dan Carpenter <dan.carpenter(a)oracle.com> ovl: potential crash in ovl_fid_to_fh() Roberto Sassu <roberto.sassu(a)huawei.com> ima: Fix return value of ima_write_policy() Roberto Sassu <roberto.sassu(a)huawei.com> evm: Check also if *tfm is an error pointer in init_desc() Roberto Sassu <roberto.sassu(a)huawei.com> ima: Set file->f_mode instead of file->f_flags in ima_calc_file_hash() Eugeniy Paltsev <Eugeniy.Paltsev(a)synopsys.com> ARC: [plat-hsdk]: fix USB regression Kevin Hao <haokexin(a)gmail.com> i2c: dev: Fix the race between the release of i2c_dev and cdev ------------- Diffstat: Makefile | 12 +- arch/arc/configs/hsdk_defconfig | 1 + arch/arm/Kconfig | 1 + arch/arm/include/asm/futex.h | 9 +- arch/arm64/Kconfig | 1 + arch/arm64/kernel/ptrace.c | 7 +- arch/powerpc/Kconfig | 2 +- arch/s390/include/asm/pci_io.h | 10 +- arch/s390/kernel/machine_kexec_file.c | 2 +- arch/s390/kernel/machine_kexec_reloc.c | 1 + arch/s390/pci/pci_mmio.c | 213 ++++++++++++++++++++- arch/sh/include/uapi/asm/sockios.h | 2 + arch/sparc/mm/srmmu.c | 6 +- arch/x86/Kconfig | 1 + arch/x86/kernel/apic/apic.c | 27 +-- arch/x86/kernel/unwind_orc.c | 7 + drivers/acpi/ec.c | 6 +- drivers/acpi/sleep.c | 15 +- drivers/base/component.c | 8 +- drivers/base/core.c | 55 ++++-- drivers/base/platform.c | 2 - drivers/dax/kmem.c | 14 +- drivers/dma/dmatest.c | 9 +- drivers/dma/idxd/device.c | 7 + drivers/dma/idxd/irq.c | 26 ++- drivers/dma/owl-dma.c | 8 +- drivers/dma/tegra210-adma.c | 2 +- drivers/firmware/efi/libstub/tpm.c | 5 +- drivers/firmware/efi/tpm.c | 5 +- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 17 +- drivers/gpu/drm/amd/display/dc/core/dc.c | 5 +- drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 4 +- drivers/gpu/drm/etnaviv/etnaviv_perfmon.c | 2 +- drivers/gpu/drm/i915/gvt/display.c | 49 ++++- drivers/gpu/drm/i915/i915_request.c | 4 +- drivers/hid/hid-alps.c | 1 + drivers/hid/hid-ids.h | 8 +- drivers/hid/hid-lg-g15.c | 4 + drivers/hid/hid-multitouch.c | 3 + drivers/hid/hid-quirks.c | 1 + drivers/hid/i2c-hid/i2c-hid-core.c | 2 + drivers/i2c/i2c-core-base.c | 22 ++- drivers/i2c/i2c-dev.c | 48 ++--- drivers/i2c/muxes/i2c-demux-pinctrl.c | 1 + drivers/iio/accel/sca3000.c | 2 +- drivers/iio/adc/stm32-adc.c | 8 +- drivers/iio/adc/stm32-dfsdm-adc.c | 21 +- drivers/iio/adc/ti-ads8344.c | 8 +- drivers/iio/dac/vf610_dac.c | 1 + drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 7 +- drivers/iommu/amd_iommu.c | 17 +- drivers/iommu/amd_iommu_init.c | 9 +- drivers/iommu/iommu.c | 17 +- drivers/ipack/carriers/tpci200.c | 1 + drivers/misc/cardreader/rtsx_pcr.c | 3 + drivers/misc/mei/client.c | 2 + drivers/mtd/mtdcore.c | 2 +- drivers/mtd/nand/spi/core.c | 4 + drivers/mtd/ubi/debug.c | 12 +- drivers/net/ethernet/amazon/ena/ena_netdev.h | 2 +- .../net/ethernet/aquantia/atlantic/aq_pci_func.c | 2 +- drivers/net/ethernet/ibm/ibmvnic.c | 3 +- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 7 +- drivers/net/gtp.c | 9 +- drivers/pinctrl/qcom/pinctrl-msm.c | 25 +++ drivers/platform/x86/asus-nb-wmi.c | 24 +++ drivers/rapidio/devices/rio_mport_cdev.c | 5 + drivers/scsi/ibmvscsi/ibmvscsi.c | 4 - drivers/scsi/qla2xxx/qla_attr.c | 5 +- drivers/scsi/qla2xxx/qla_mbx.c | 2 +- drivers/staging/greybus/uart.c | 4 +- drivers/staging/iio/resolver/ad2s1210.c | 17 +- drivers/staging/kpc2000/kpc2000/core.c | 9 +- drivers/staging/wfx/scan.c | 4 +- drivers/target/target_core_transport.c | 1 + drivers/tty/serial/sifive.c | 1 + drivers/usb/core/message.c | 4 +- drivers/vhost/vsock.c | 10 +- drivers/virtio/virtio_balloon.c | 107 ++++++----- fs/afs/fs_probe.c | 18 +- fs/afs/fsclient.c | 8 +- fs/afs/vl_probe.c | 18 +- fs/afs/yfsclient.c | 8 +- fs/ceph/caps.c | 1 + fs/configfs/dir.c | 1 + fs/file.c | 2 +- fs/gfs2/glock.c | 3 - fs/overlayfs/export.c | 3 + fs/splice.c | 2 +- fs/ubifs/auth.c | 17 +- fs/ubifs/file.c | 6 +- fs/ubifs/replay.c | 13 +- include/linux/platform_device.h | 1 - include/net/af_rxrpc.h | 2 +- include/net/drop_monitor.h | 2 +- include/trace/events/rxrpc.h | 52 ++++- init/Kconfig | 3 + kernel/bpf/syscall.c | 17 +- kernel/bpf/verifier.c | 4 +- kernel/sched/fair.c | 50 ++--- kernel/trace/bpf_trace.c | 6 +- lib/test_printf.c | 19 +- lib/vsprintf.c | 7 + mm/kasan/Makefile | 8 +- mm/kasan/generic.c | 1 - mm/kasan/tags.c | 1 - mm/z3fold.c | 11 +- net/core/flow_dissector.c | 26 ++- net/rxrpc/Makefile | 1 + net/rxrpc/ar-internal.h | 25 ++- net/rxrpc/call_accept.c | 2 +- net/rxrpc/call_event.c | 22 +-- net/rxrpc/input.c | 44 ++++- net/rxrpc/misc.c | 5 - net/rxrpc/output.c | 9 +- net/rxrpc/peer_event.c | 46 ----- net/rxrpc/peer_object.c | 12 +- net/rxrpc/proc.c | 8 +- net/rxrpc/rtt.c | 195 +++++++++++++++++++ net/rxrpc/rxkad.c | 3 +- net/rxrpc/sendmsg.c | 26 +-- net/rxrpc/sysctl.c | 9 - scripts/gcc-plugins/Makefile | 1 + scripts/gcc-plugins/gcc-common.h | 4 + scripts/gdb/linux/rbtree.py | 4 +- scripts/link-vmlinux.sh | 28 ++- security/apparmor/apparmorfs.c | 3 +- security/apparmor/audit.c | 3 +- security/apparmor/domain.c | 3 +- security/integrity/evm/evm_crypto.c | 44 ++--- security/integrity/ima/ima_crypto.c | 12 +- security/integrity/ima/ima_fs.c | 3 +- sound/core/pcm_lib.c | 1 + sound/pci/hda/patch_realtek.c | 162 ++++++++++++++++ sound/pci/ice1712/ice1712.c | 3 +- tools/bootconfig/main.c | 10 +- tools/testing/selftests/bpf/prog_tests/mmap.c | 13 +- tools/testing/selftests/bpf/progs/test_mmap.c | 8 + tools/testing/selftests/ftrace/ftracetest | 8 +- tools/testing/selftests/kvm/Makefile | 29 ++- tools/testing/selftests/kvm/include/evmcs.h | 4 +- tools/testing/selftests/kvm/lib/x86_64/vmx.c | 3 + 142 files changed, 1489 insertions(+), 568 deletions(-)

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[PATCH v3] virtio_vsock: Fix race condition in virtio_transport_recv_pkt

by Jia He

When client on the host tries to connect(SOCK_STREAM, O_NONBLOCK) to the server on the guest, there will be a panic on a ThunderX2 (armv8a server): [ 463.718844] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 463.718848] Mem abort info: [ 463.718849] ESR = 0x96000044 [ 463.718852] EC = 0x25: DABT (current EL), IL = 32 bits [ 463.718853] SET = 0, FnV = 0 [ 463.718854] EA = 0, S1PTW = 0 [ 463.718855] Data abort info: [ 463.718856] ISV = 0, ISS = 0x00000044 [ 463.718857] CM = 0, WnR = 1 [ 463.718859] user pgtable: 4k pages, 48-bit VAs, pgdp=0000008f6f6e9000 [ 463.718861] [0000000000000000] pgd=0000000000000000 [ 463.718866] Internal error: Oops: 96000044 [#1] SMP [...] [ 463.718977] CPU: 213 PID: 5040 Comm: vhost-5032 Tainted: G O 5.7.0-rc7+ #139 [ 463.718980] Hardware name: GIGABYTE R281-T91-00/MT91-FS1-00, BIOS F06 09/25/2018 [ 463.718982] pstate: 60400009 (nZCv daif +PAN -UAO) [ 463.718995] pc : virtio_transport_recv_pkt+0x4c8/0xd40 [vmw_vsock_virtio_transport_common] [ 463.718999] lr : virtio_transport_recv_pkt+0x1fc/0xd40 [vmw_vsock_virtio_transport_common] [ 463.719000] sp : ffff80002dbe3c40 [...] [ 463.719025] Call trace: [ 463.719030] virtio_transport_recv_pkt+0x4c8/0xd40 [vmw_vsock_virtio_transport_common] [ 463.719034] vhost_vsock_handle_tx_kick+0x360/0x408 [vhost_vsock] [ 463.719041] vhost_worker+0x100/0x1a0 [vhost] [ 463.719048] kthread+0x128/0x130 [ 463.719052] ret_from_fork+0x10/0x18 The race condition is as follows: Task1 Task2 ===== ===== __sock_release virtio_transport_recv_pkt __vsock_release vsock_find_bound_socket (found sk) lock_sock_nested vsock_remove_sock sock_orphan sk_set_socket(sk, NULL) sk->sk_shutdown = SHUTDOWN_MASK ... release_sock lock_sock virtio_transport_recv_connecting sk->sk_socket->state (panic!) The root cause is that vsock_find_bound_socket can't hold the lock_sock, so there is a small race window between vsock_find_bound_socket() and lock_sock(). If __vsock_release() is running in another task, sk->sk_socket will be set to NULL inadvertently. This fixes it by checking sk->sk_shutdown(suggested by Stefano) after lock_sock since sk->sk_shutdown is set to SHUTDOWN_MASK under the protection of lock_sock_nested. Signed-off-by: Jia He <justin.he(a)arm.com> Cc: stable(a)vger.kernel.org Reviewed-by: Stefano Garzarella <sgarzare(a)redhat.com> --- v3: - describe the fix of race condition more clearly - refine the commit log net/vmw_vsock/virtio_transport_common.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c index 69efc891885f..0edda1edf988 100644 --- a/net/vmw_vsock/virtio_transport_common.c +++ b/net/vmw_vsock/virtio_transport_common.c @@ -1132,6 +1132,14 @@ void virtio_transport_recv_pkt(struct virtio_transport *t, lock_sock(sk); + /* Check if sk has been released before lock_sock */ + if (sk->sk_shutdown == SHUTDOWN_MASK) { + (void)virtio_transport_reset_no_sock(t, pkt); + release_sock(sk); + sock_put(sk); + goto free_pkt; + } + /* Update CID in case it has changed after a transport reset event */ vsk->local_addr.svm_cid = dst.svm_cid; -- 2.17.1

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Linux-stable-mirror May 2020