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FAILED: patch "[PATCH] ACPI: platform-profile: Fix CFI violation when accessing" failed to apply to 6.13-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.13-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>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.13.y git checkout FETCH_HEAD git cherry-pick -x dd4f730b557ce701a2cd4f604bf1e57667bd8b6e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025040803-womb-decorated-10be@gregkh' --subject-prefix 'PATCH 6.13.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From dd4f730b557ce701a2cd4f604bf1e57667bd8b6e Mon Sep 17 00:00:00 2001 From: Nathan Chancellor <nathan(a)kernel.org> Date: Mon, 10 Feb 2025 21:28:25 -0500 Subject: [PATCH] ACPI: platform-profile: Fix CFI violation when accessing sysfs files When an attribute group is created with sysfs_create_group(), the ->sysfs_ops() callback is set to kobj_sysfs_ops, which sets the ->show() and ->store() callbacks to kobj_attr_show() and kobj_attr_store() respectively. These functions use container_of() to get the respective callback from the passed attribute, meaning that these callbacks need to be of the same type as the callbacks in 'struct kobj_attribute'. However, ->show() and ->store() in the platform_profile driver are defined for struct device_attribute with the help of DEVICE_ATTR_RO() and DEVICE_ATTR_RW(), which results in a CFI violation when accessing platform_profile or platform_profile_choices under /sys/firmware/acpi because the types do not match: CFI failure at kobj_attr_show+0x19/0x30 (target: platform_profile_choices_show+0x0/0x140; expected type: 0x7a69590c) There is no functional issue from the type mismatch because the layout of 'struct kobj_attribute' and 'struct device_attribute' are the same, so the container_of() cast does not break anything aside from CFI. Change the type of platform_profile_choices_show() and platform_profile_{show,store}() to match the callbacks in 'struct kobj_attribute' and update the attribute variables to match, which resolves the CFI violation. Cc: All applicable <stable(a)vger.kernel.org> Fixes: a2ff95e018f1 ("ACPI: platform: Add platform profile support") Reported-by: John Rowley <lkml(a)johnrowley.me> Closes: https://github.com/ClangBuiltLinux/linux/issues/2047 Tested-by: John Rowley <lkml(a)johnrowley.me> Reviewed-by: Sami Tolvanen <samitolvanen(a)google.com> Signed-off-by: Nathan Chancellor <nathan(a)kernel.org> Acked-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Reviewed-by: Mark Pearson <mpearson-lenovo(a)squebb.ca> Tested-by: Mark Pearson <mpearson-lenovo(a)squebb.ca> Link: https://patch.msgid.link/20250210-acpi-platform_profile-fix-cfi-violation-v… [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c index fc92e43d0fe9..1b6317f759f9 100644 --- a/drivers/acpi/platform_profile.c +++ b/drivers/acpi/platform_profile.c @@ -260,14 +260,14 @@ static int _aggregate_choices(struct device *dev, void *data) /** * platform_profile_choices_show - Show the available profile choices for legacy sysfs interface - * @dev: The device + * @kobj: The kobject * @attr: The attribute * @buf: The buffer to write to * * Return: The number of bytes written */ -static ssize_t platform_profile_choices_show(struct device *dev, - struct device_attribute *attr, +static ssize_t platform_profile_choices_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) { unsigned long aggregate[BITS_TO_LONGS(PLATFORM_PROFILE_LAST)]; @@ -333,14 +333,14 @@ static int _store_and_notify(struct device *dev, void *data) /** * platform_profile_show - Show the current profile for legacy sysfs interface - * @dev: The device + * @kobj: The kobject * @attr: The attribute * @buf: The buffer to write to * * Return: The number of bytes written */ -static ssize_t platform_profile_show(struct device *dev, - struct device_attribute *attr, +static ssize_t platform_profile_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) { enum platform_profile_option profile = PLATFORM_PROFILE_LAST; @@ -362,15 +362,15 @@ static ssize_t platform_profile_show(struct device *dev, /** * platform_profile_store - Set the profile for legacy sysfs interface - * @dev: The device + * @kobj: The kobject * @attr: The attribute * @buf: The buffer to read from * @count: The number of bytes to read * * Return: The number of bytes read */ -static ssize_t platform_profile_store(struct device *dev, - struct device_attribute *attr, +static ssize_t platform_profile_store(struct kobject *kobj, + struct kobj_attribute *attr, const char *buf, size_t count) { unsigned long choices[BITS_TO_LONGS(PLATFORM_PROFILE_LAST)]; @@ -401,12 +401,12 @@ static ssize_t platform_profile_store(struct device *dev, return count; } -static DEVICE_ATTR_RO(platform_profile_choices); -static DEVICE_ATTR_RW(platform_profile); +static struct kobj_attribute attr_platform_profile_choices = __ATTR_RO(platform_profile_choices); +static struct kobj_attribute attr_platform_profile = __ATTR_RW(platform_profile); static struct attribute *platform_profile_attrs[] = { - &dev_attr_platform_profile_choices.attr, - &dev_attr_platform_profile.attr, + &attr_platform_profile_choices.attr, + &attr_platform_profile.attr, NULL };

2 months, 3 weeks

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[PATCH 5.10.y] drm/amd/display: Skip inactive planes within ModeSupportAndSystemConfiguration

by jianqi.ren.cn＠windriver.com

From: Hersen Wu <hersenxs.wu(a)amd.com> [ Upstream commit a54f7e866cc73a4cb71b8b24bb568ba35c8969df ] [Why] Coverity reports Memory - illegal accesses. [How] Skip inactive planes. Reviewed-by: Alex Hung <alex.hung(a)amd.com> Acked-by: Tom Chung <chiahsuan.chung(a)amd.com> Signed-off-by: Hersen Wu <hersenxs.wu(a)amd.com> Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> [get_pipe_idx() was introduced as a helper by dda4fb85e433 ("drm/amd/display: DML changes for DCN32/321") in v6.0. This patch backports it to make code clearer. And minor conflict is resolved due to code context change.] Signed-off-by: Jianqi Ren <jianqi.ren.cn(a)windriver.com> Signed-off-by: He Zhe <zhe.he(a)windriver.com> --- Verified the build test --- .../drm/amd/display/dc/dml/display_mode_vba.c | 27 ++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c index b32093136089..7dfcb1e0a6ff 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c +++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c @@ -825,11 +825,30 @@ static unsigned int CursorBppEnumToBits(enum cursor_bpp ebpp) } } +static unsigned int get_pipe_idx(struct display_mode_lib *mode_lib, unsigned int plane_idx) +{ + int pipe_idx = -1; + int i; + + ASSERT(plane_idx < DC__NUM_DPP__MAX); + + for (i = 0; i < DC__NUM_DPP__MAX ; i++) { + if (plane_idx == mode_lib->vba.pipe_plane[i]) { + pipe_idx = i; + break; + } + } + ASSERT(pipe_idx >= 0); + + return pipe_idx; +} + void ModeSupportAndSystemConfiguration(struct display_mode_lib *mode_lib) { soc_bounding_box_st *soc = &mode_lib->vba.soc; unsigned int k; unsigned int total_pipes = 0; + unsigned int pipe_idx = 0; mode_lib->vba.VoltageLevel = mode_lib->vba.cache_pipes[0].clks_cfg.voltage; mode_lib->vba.ReturnBW = mode_lib->vba.ReturnBWPerState[mode_lib->vba.VoltageLevel][mode_lib->vba.maxMpcComb]; @@ -849,8 +868,14 @@ void ModeSupportAndSystemConfiguration(struct display_mode_lib *mode_lib) mode_lib->vba.DISPCLK = soc->clock_limits[mode_lib->vba.VoltageLevel].dispclk_mhz; // Total Available Pipes Support Check - for (k = 0; k < mode_lib->vba.NumberOfActivePlanes; ++k) + for (k = 0; k < mode_lib->vba.NumberOfActivePlanes; ++k) { + pipe_idx = get_pipe_idx(mode_lib, k); + if (pipe_idx == -1) { + ASSERT(0); + continue; // skip inactive planes + } total_pipes += mode_lib->vba.DPPPerPlane[k]; + } ASSERT(total_pipes <= DC__NUM_DPP__MAX); } -- 2.34.1

2 months, 3 weeks

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[PATCH 5.15.y] drm/amd/pm: Fix negative array index read

by jianqi.ren.cn＠windriver.com

From: Jesse Zhang <jesse.zhang(a)amd.com> [ Upstream commit c8c19ebf7c0b202a6a2d37a52ca112432723db5f ] Avoid using the negative values for clk_idex as an index into an array pptable->DpmDescriptor. V2: fix clk_index return check (Tim Huang) Signed-off-by: Jesse Zhang <Jesse.Zhang(a)amd.com> Reviewed-by: Tim Huang <Tim.Huang(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> [Minor conflict resolved due to code context change.] Signed-off-by: Jianqi Ren <jianqi.ren.cn(a)windriver.com> Signed-off-by: He Zhe <zhe.he(a)windriver.com> --- Verified the build test --- .../gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c | 21 ++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c index dfba0bc73207..9f5dcfaebe63 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c @@ -1231,19 +1231,22 @@ static int navi10_get_current_clk_freq_by_table(struct smu_context *smu, value); } -static bool navi10_is_support_fine_grained_dpm(struct smu_context *smu, enum smu_clk_type clk_type) +static int navi10_is_support_fine_grained_dpm(struct smu_context *smu, enum smu_clk_type clk_type) { PPTable_t *pptable = smu->smu_table.driver_pptable; DpmDescriptor_t *dpm_desc = NULL; - uint32_t clk_index = 0; + int clk_index = 0; clk_index = smu_cmn_to_asic_specific_index(smu, CMN2ASIC_MAPPING_CLK, clk_type); + if (clk_index < 0) + return clk_index; + dpm_desc = &pptable->DpmDescriptor[clk_index]; /* 0 - Fine grained DPM, 1 - Discrete DPM */ - return dpm_desc->SnapToDiscrete == 0; + return dpm_desc->SnapToDiscrete == 0 ? 1 : 0; } static inline bool navi10_od_feature_is_supported(struct smu_11_0_overdrive_table *od_table, enum SMU_11_0_ODFEATURE_CAP cap) @@ -1299,7 +1302,11 @@ static int navi10_print_clk_levels(struct smu_context *smu, if (ret) return size; - if (!navi10_is_support_fine_grained_dpm(smu, clk_type)) { + ret = navi10_is_support_fine_grained_dpm(smu, clk_type); + if (ret < 0) + return ret; + + if (!ret) { for (i = 0; i < count; i++) { ret = smu_v11_0_get_dpm_freq_by_index(smu, clk_type, i, &value); if (ret) @@ -1468,7 +1475,11 @@ static int navi10_force_clk_levels(struct smu_context *smu, case SMU_UCLK: case SMU_FCLK: /* There is only 2 levels for fine grained DPM */ - if (navi10_is_support_fine_grained_dpm(smu, clk_type)) { + ret = navi10_is_support_fine_grained_dpm(smu, clk_type); + if (ret < 0) + return ret; + + if (ret) { soft_max_level = (soft_max_level >= 1 ? 1 : 0); soft_min_level = (soft_min_level >= 1 ? 1 : 0); } -- 2.34.1

2 months, 3 weeks

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[PATCH 5.10.y] drm/amd/pm: Fix negative array index read

by jianqi.ren.cn＠windriver.com

From: Jesse Zhang <jesse.zhang(a)amd.com> [ Upstream commit c8c19ebf7c0b202a6a2d37a52ca112432723db5f ] Avoid using the negative values for clk_idex as an index into an array pptable->DpmDescriptor. V2: fix clk_index return check (Tim Huang) Signed-off-by: Jesse Zhang <Jesse.Zhang(a)amd.com> Reviewed-by: Tim Huang <Tim.Huang(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> [Minor conflict resolved due to code context change.] Signed-off-by: Jianqi Ren <jianqi.ren.cn(a)windriver.com> Signed-off-by: He Zhe <zhe.he(a)windriver.com> --- Verified the build test --- .../gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c | 21 ++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c index a7773b6453d5..0af9ee3a520a 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c @@ -900,19 +900,22 @@ static int navi10_get_current_clk_freq_by_table(struct smu_context *smu, value); } -static bool navi10_is_support_fine_grained_dpm(struct smu_context *smu, enum smu_clk_type clk_type) +static int navi10_is_support_fine_grained_dpm(struct smu_context *smu, enum smu_clk_type clk_type) { PPTable_t *pptable = smu->smu_table.driver_pptable; DpmDescriptor_t *dpm_desc = NULL; - uint32_t clk_index = 0; + int clk_index = 0; clk_index = smu_cmn_to_asic_specific_index(smu, CMN2ASIC_MAPPING_CLK, clk_type); + if (clk_index < 0) + return clk_index; + dpm_desc = &pptable->DpmDescriptor[clk_index]; /* 0 - Fine grained DPM, 1 - Discrete DPM */ - return dpm_desc->SnapToDiscrete == 0 ? true : false; + return dpm_desc->SnapToDiscrete == 0 ? 1 : 0; } static inline bool navi10_od_feature_is_supported(struct smu_11_0_overdrive_table *od_table, enum SMU_11_0_ODFEATURE_CAP cap) @@ -964,7 +967,11 @@ static int navi10_print_clk_levels(struct smu_context *smu, if (ret) return size; - if (!navi10_is_support_fine_grained_dpm(smu, clk_type)) { + ret = navi10_is_support_fine_grained_dpm(smu, clk_type); + if (ret < 0) + return ret; + + if (!ret) { for (i = 0; i < count; i++) { ret = smu_v11_0_get_dpm_freq_by_index(smu, clk_type, i, &value); if (ret) @@ -1127,7 +1134,11 @@ static int navi10_force_clk_levels(struct smu_context *smu, case SMU_UCLK: case SMU_FCLK: /* There is only 2 levels for fine grained DPM */ - if (navi10_is_support_fine_grained_dpm(smu, clk_type)) { + ret = navi10_is_support_fine_grained_dpm(smu, clk_type); + if (ret < 0) + return ret; + + if (ret) { soft_max_level = (soft_max_level >= 1 ? 1 : 0); soft_min_level = (soft_min_level >= 1 ? 1 : 0); } -- 2.34.1

2 months, 3 weeks

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FAILED: patch "[PATCH] x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-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>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 22cc5ca5de52bbfc36a7d4a55323f91fb4492264 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025040827-discern-goldmine-da71@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 22cc5ca5de52bbfc36a7d4a55323f91fb4492264 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" <kirill.shutemov(a)linux.intel.com> Date: Fri, 28 Feb 2025 01:44:14 +0000 Subject: [PATCH] x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT CONFIG_PARAVIRT_XXL is mainly defined/used by XEN PV guests. For other VM guest types, features supported under CONFIG_PARAVIRT are self sufficient. CONFIG_PARAVIRT mainly provides support for TLB flush operations and time related operations. For TDX guest as well, paravirt calls under CONFIG_PARVIRT meets most of its requirement except the need of HLT and SAFE_HLT paravirt calls, which is currently defined under CONFIG_PARAVIRT_XXL. Since enabling CONFIG_PARAVIRT_XXL is too bloated for TDX guest like platforms, move HLT and SAFE_HLT paravirt calls under CONFIG_PARAVIRT. Moving HLT and SAFE_HLT paravirt calls are not fatal and should not break any functionality for current users of CONFIG_PARAVIRT. Fixes: bfe6ed0c6727 ("x86/tdx: Add HLT support for TDX guests") Co-developed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy(a)linux.intel.com> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy(a)linux.intel.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> Signed-off-by: Vishal Annapurve <vannapurve(a)google.com> Signed-off-by: Ingo Molnar <mingo(a)kernel.org> Reviewed-by: Andi Kleen <ak(a)linux.intel.com> Reviewed-by: Tony Luck <tony.luck(a)intel.com> Reviewed-by: Juergen Gross <jgross(a)suse.com> Tested-by: Ryan Afranji <afranji(a)google.com> Cc: Andy Lutomirski <luto(a)kernel.org> Cc: Brian Gerst <brgerst(a)gmail.com> Cc: H. Peter Anvin <hpa(a)zytor.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: stable(a)kernel.org Link: https://lore.kernel.org/r/20250228014416.3925664-2-vannapurve@google.com diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h index abb8374c9ff7..9a9b21b78905 100644 --- a/arch/x86/include/asm/irqflags.h +++ b/arch/x86/include/asm/irqflags.h @@ -76,6 +76,28 @@ static __always_inline void native_local_irq_restore(unsigned long flags) #endif +#ifndef CONFIG_PARAVIRT +#ifndef __ASSEMBLY__ +/* + * Used in the idle loop; sti takes one instruction cycle + * to complete: + */ +static __always_inline void arch_safe_halt(void) +{ + native_safe_halt(); +} + +/* + * Used when interrupts are already enabled or to + * shutdown the processor: + */ +static __always_inline void halt(void) +{ + native_halt(); +} +#endif /* __ASSEMBLY__ */ +#endif /* CONFIG_PARAVIRT */ + #ifdef CONFIG_PARAVIRT_XXL #include <asm/paravirt.h> #else @@ -97,24 +119,6 @@ static __always_inline void arch_local_irq_enable(void) native_irq_enable(); } -/* - * Used in the idle loop; sti takes one instruction cycle - * to complete: - */ -static __always_inline void arch_safe_halt(void) -{ - native_safe_halt(); -} - -/* - * Used when interrupts are already enabled or to - * shutdown the processor: - */ -static __always_inline void halt(void) -{ - native_halt(); -} - /* * For spinlocks, etc: */ diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index bed346bfac89..c4c23190925c 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -102,6 +102,16 @@ static inline void notify_page_enc_status_changed(unsigned long pfn, PVOP_VCALL3(mmu.notify_page_enc_status_changed, pfn, npages, enc); } +static __always_inline void arch_safe_halt(void) +{ + PVOP_VCALL0(irq.safe_halt); +} + +static inline void halt(void) +{ + PVOP_VCALL0(irq.halt); +} + #ifdef CONFIG_PARAVIRT_XXL static inline void load_sp0(unsigned long sp0) { @@ -165,16 +175,6 @@ static inline void __write_cr4(unsigned long x) PVOP_VCALL1(cpu.write_cr4, x); } -static __always_inline void arch_safe_halt(void) -{ - PVOP_VCALL0(irq.safe_halt); -} - -static inline void halt(void) -{ - PVOP_VCALL0(irq.halt); -} - static inline u64 paravirt_read_msr(unsigned msr) { return PVOP_CALL1(u64, cpu.read_msr, msr); diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index 62912023b46f..631c306ce1ff 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -120,10 +120,9 @@ struct pv_irq_ops { struct paravirt_callee_save save_fl; struct paravirt_callee_save irq_disable; struct paravirt_callee_save irq_enable; - +#endif void (*safe_halt)(void); void (*halt)(void); -#endif } __no_randomize_layout; struct pv_mmu_ops { diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 97925632c28e..1ccd05d8999f 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -75,6 +75,11 @@ void paravirt_set_sched_clock(u64 (*func)(void)) static_call_update(pv_sched_clock, func); } +static noinstr void pv_native_safe_halt(void) +{ + native_safe_halt(); +} + #ifdef CONFIG_PARAVIRT_XXL static noinstr void pv_native_write_cr2(unsigned long val) { @@ -100,11 +105,6 @@ static noinstr void pv_native_set_debugreg(int regno, unsigned long val) { native_set_debugreg(regno, val); } - -static noinstr void pv_native_safe_halt(void) -{ - native_safe_halt(); -} #endif struct pv_info pv_info = { @@ -161,9 +161,11 @@ struct paravirt_patch_template pv_ops = { .irq.save_fl = __PV_IS_CALLEE_SAVE(pv_native_save_fl), .irq.irq_disable = __PV_IS_CALLEE_SAVE(pv_native_irq_disable), .irq.irq_enable = __PV_IS_CALLEE_SAVE(pv_native_irq_enable), +#endif /* CONFIG_PARAVIRT_XXL */ + + /* Irq HLT ops. */ .irq.safe_halt = pv_native_safe_halt, .irq.halt = native_halt, -#endif /* CONFIG_PARAVIRT_XXL */ /* Mmu ops. */ .mmu.flush_tlb_user = native_flush_tlb_local,

2 months, 3 weeks

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[PATCH 5.15.y] drm/amd/display: Fix out-of-bounds access in 'dcn21_link_encoder_create'

by bin.lan.cn＠windriver.com

From: Srinivasan Shanmugam <srinivasan.shanmugam(a)amd.com> [ Upstream commit 63de35a8fcfca59ae8750d469a7eb220c7557baf ] An issue was identified in the dcn21_link_encoder_create function where an out-of-bounds access could occur when the hpd_source index was used to reference the link_enc_hpd_regs array. This array has a fixed size and the index was not being checked against the array's bounds before accessing it. This fix adds a conditional check to ensure that the hpd_source index is within the valid range of the link_enc_hpd_regs array. If the index is out of bounds, the function now returns NULL to prevent undefined behavior. References: [ 65.920507] ------------[ cut here ]------------ [ 65.920510] UBSAN: array-index-out-of-bounds in drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn21/dcn21_resource.c:1312:29 [ 65.920519] index 7 is out of range for type 'dcn10_link_enc_hpd_registers [5]' [ 65.920523] CPU: 3 PID: 1178 Comm: modprobe Tainted: G OE 6.8.0-cleanershaderfeatureresetasdntipmi200nv2132 #13 [ 65.920525] Hardware name: AMD Majolica-RN/Majolica-RN, BIOS WMJ0429N_Weekly_20_04_2 04/29/2020 [ 65.920527] Call Trace: [ 65.920529] <TASK> [ 65.920532] dump_stack_lvl+0x48/0x70 [ 65.920541] dump_stack+0x10/0x20 [ 65.920543] __ubsan_handle_out_of_bounds+0xa2/0xe0 [ 65.920549] dcn21_link_encoder_create+0xd9/0x140 [amdgpu] [ 65.921009] link_create+0x6d3/0xed0 [amdgpu] [ 65.921355] create_links+0x18a/0x4e0 [amdgpu] [ 65.921679] dc_create+0x360/0x720 [amdgpu] [ 65.921999] ? dmi_matches+0xa0/0x220 [ 65.922004] amdgpu_dm_init+0x2b6/0x2c90 [amdgpu] [ 65.922342] ? console_unlock+0x77/0x120 [ 65.922348] ? dev_printk_emit+0x86/0xb0 [ 65.922354] dm_hw_init+0x15/0x40 [amdgpu] [ 65.922686] amdgpu_device_init+0x26a8/0x33a0 [amdgpu] [ 65.922921] amdgpu_driver_load_kms+0x1b/0xa0 [amdgpu] [ 65.923087] amdgpu_pci_probe+0x1b7/0x630 [amdgpu] [ 65.923087] local_pci_probe+0x4b/0xb0 [ 65.923087] pci_device_probe+0xc8/0x280 [ 65.923087] really_probe+0x187/0x300 [ 65.923087] __driver_probe_device+0x85/0x130 [ 65.923087] driver_probe_device+0x24/0x110 [ 65.923087] __driver_attach+0xac/0x1d0 [ 65.923087] ? __pfx___driver_attach+0x10/0x10 [ 65.923087] bus_for_each_dev+0x7d/0xd0 [ 65.923087] driver_attach+0x1e/0x30 [ 65.923087] bus_add_driver+0xf2/0x200 [ 65.923087] driver_register+0x64/0x130 [ 65.923087] ? __pfx_amdgpu_init+0x10/0x10 [amdgpu] [ 65.923087] __pci_register_driver+0x61/0x70 [ 65.923087] amdgpu_init+0x7d/0xff0 [amdgpu] [ 65.923087] do_one_initcall+0x49/0x310 [ 65.923087] ? kmalloc_trace+0x136/0x360 [ 65.923087] do_init_module+0x6a/0x270 [ 65.923087] load_module+0x1fce/0x23a0 [ 65.923087] init_module_from_file+0x9c/0xe0 [ 65.923087] ? init_module_from_file+0x9c/0xe0 [ 65.923087] idempotent_init_module+0x179/0x230 [ 65.923087] __x64_sys_finit_module+0x5d/0xa0 [ 65.923087] do_syscall_64+0x76/0x120 [ 65.923087] entry_SYSCALL_64_after_hwframe+0x6e/0x76 [ 65.923087] RIP: 0033:0x7f2d80f1e88d [ 65.923087] Code: 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 73 b5 0f 00 f7 d8 64 89 01 48 [ 65.923087] RSP: 002b:00007ffc7bc1aa78 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 65.923087] RAX: ffffffffffffffda RBX: 0000564c9c1db130 RCX: 00007f2d80f1e88d [ 65.923087] RDX: 0000000000000000 RSI: 0000564c9c1e5480 RDI: 000000000000000f [ 65.923087] RBP: 0000000000040000 R08: 0000000000000000 R09: 0000000000000002 [ 65.923087] R10: 000000000000000f R11: 0000000000000246 R12: 0000564c9c1e5480 [ 65.923087] R13: 0000564c9c1db260 R14: 0000000000000000 R15: 0000564c9c1e54b0 [ 65.923087] </TASK> [ 65.923927] ---[ end trace ]--- Cc: Tom Chung <chiahsuan.chung(a)amd.com> Cc: Rodrigo Siqueira <Rodrigo.Siqueira(a)amd.com> Cc: Roman Li <roman.li(a)amd.com> Cc: Alex Hung <alex.hung(a)amd.com> Cc: Aurabindo Pillai <aurabindo.pillai(a)amd.com> Cc: Harry Wentland <harry.wentland(a)amd.com> Cc: Hamza Mahfooz <hamza.mahfooz(a)amd.com> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam(a)amd.com> Reviewed-by: Roman Li <roman.li(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Bin Lan <bin.lan.cn(a)windriver.com> Signed-off-by: He Zhe <zhe.he(a)windriver.com> --- Build test passed. --- drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c index 7c5c1414b7a1..257ab8820c7a 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c @@ -1852,7 +1852,7 @@ static struct link_encoder *dcn21_link_encoder_create( kzalloc(sizeof(struct dcn21_link_encoder), GFP_KERNEL); int link_regs_id; - if (!enc21) + if (!enc21 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs)) return NULL; link_regs_id = -- 2.34.1

2 months, 3 weeks

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FAILED: patch "[PATCH] x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT" failed to apply to 6.13-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.13-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>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.13.y git checkout FETCH_HEAD git cherry-pick -x 22cc5ca5de52bbfc36a7d4a55323f91fb4492264 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025040826-tracing-shanty-607f@gregkh' --subject-prefix 'PATCH 6.13.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 22cc5ca5de52bbfc36a7d4a55323f91fb4492264 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" <kirill.shutemov(a)linux.intel.com> Date: Fri, 28 Feb 2025 01:44:14 +0000 Subject: [PATCH] x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT CONFIG_PARAVIRT_XXL is mainly defined/used by XEN PV guests. For other VM guest types, features supported under CONFIG_PARAVIRT are self sufficient. CONFIG_PARAVIRT mainly provides support for TLB flush operations and time related operations. For TDX guest as well, paravirt calls under CONFIG_PARVIRT meets most of its requirement except the need of HLT and SAFE_HLT paravirt calls, which is currently defined under CONFIG_PARAVIRT_XXL. Since enabling CONFIG_PARAVIRT_XXL is too bloated for TDX guest like platforms, move HLT and SAFE_HLT paravirt calls under CONFIG_PARAVIRT. Moving HLT and SAFE_HLT paravirt calls are not fatal and should not break any functionality for current users of CONFIG_PARAVIRT. Fixes: bfe6ed0c6727 ("x86/tdx: Add HLT support for TDX guests") Co-developed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy(a)linux.intel.com> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy(a)linux.intel.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov(a)linux.intel.com> Signed-off-by: Vishal Annapurve <vannapurve(a)google.com> Signed-off-by: Ingo Molnar <mingo(a)kernel.org> Reviewed-by: Andi Kleen <ak(a)linux.intel.com> Reviewed-by: Tony Luck <tony.luck(a)intel.com> Reviewed-by: Juergen Gross <jgross(a)suse.com> Tested-by: Ryan Afranji <afranji(a)google.com> Cc: Andy Lutomirski <luto(a)kernel.org> Cc: Brian Gerst <brgerst(a)gmail.com> Cc: H. Peter Anvin <hpa(a)zytor.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: stable(a)kernel.org Link: https://lore.kernel.org/r/20250228014416.3925664-2-vannapurve@google.com diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h index abb8374c9ff7..9a9b21b78905 100644 --- a/arch/x86/include/asm/irqflags.h +++ b/arch/x86/include/asm/irqflags.h @@ -76,6 +76,28 @@ static __always_inline void native_local_irq_restore(unsigned long flags) #endif +#ifndef CONFIG_PARAVIRT +#ifndef __ASSEMBLY__ +/* + * Used in the idle loop; sti takes one instruction cycle + * to complete: + */ +static __always_inline void arch_safe_halt(void) +{ + native_safe_halt(); +} + +/* + * Used when interrupts are already enabled or to + * shutdown the processor: + */ +static __always_inline void halt(void) +{ + native_halt(); +} +#endif /* __ASSEMBLY__ */ +#endif /* CONFIG_PARAVIRT */ + #ifdef CONFIG_PARAVIRT_XXL #include <asm/paravirt.h> #else @@ -97,24 +119,6 @@ static __always_inline void arch_local_irq_enable(void) native_irq_enable(); } -/* - * Used in the idle loop; sti takes one instruction cycle - * to complete: - */ -static __always_inline void arch_safe_halt(void) -{ - native_safe_halt(); -} - -/* - * Used when interrupts are already enabled or to - * shutdown the processor: - */ -static __always_inline void halt(void) -{ - native_halt(); -} - /* * For spinlocks, etc: */ diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index bed346bfac89..c4c23190925c 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -102,6 +102,16 @@ static inline void notify_page_enc_status_changed(unsigned long pfn, PVOP_VCALL3(mmu.notify_page_enc_status_changed, pfn, npages, enc); } +static __always_inline void arch_safe_halt(void) +{ + PVOP_VCALL0(irq.safe_halt); +} + +static inline void halt(void) +{ + PVOP_VCALL0(irq.halt); +} + #ifdef CONFIG_PARAVIRT_XXL static inline void load_sp0(unsigned long sp0) { @@ -165,16 +175,6 @@ static inline void __write_cr4(unsigned long x) PVOP_VCALL1(cpu.write_cr4, x); } -static __always_inline void arch_safe_halt(void) -{ - PVOP_VCALL0(irq.safe_halt); -} - -static inline void halt(void) -{ - PVOP_VCALL0(irq.halt); -} - static inline u64 paravirt_read_msr(unsigned msr) { return PVOP_CALL1(u64, cpu.read_msr, msr); diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index 62912023b46f..631c306ce1ff 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -120,10 +120,9 @@ struct pv_irq_ops { struct paravirt_callee_save save_fl; struct paravirt_callee_save irq_disable; struct paravirt_callee_save irq_enable; - +#endif void (*safe_halt)(void); void (*halt)(void); -#endif } __no_randomize_layout; struct pv_mmu_ops { diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 97925632c28e..1ccd05d8999f 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -75,6 +75,11 @@ void paravirt_set_sched_clock(u64 (*func)(void)) static_call_update(pv_sched_clock, func); } +static noinstr void pv_native_safe_halt(void) +{ + native_safe_halt(); +} + #ifdef CONFIG_PARAVIRT_XXL static noinstr void pv_native_write_cr2(unsigned long val) { @@ -100,11 +105,6 @@ static noinstr void pv_native_set_debugreg(int regno, unsigned long val) { native_set_debugreg(regno, val); } - -static noinstr void pv_native_safe_halt(void) -{ - native_safe_halt(); -} #endif struct pv_info pv_info = { @@ -161,9 +161,11 @@ struct paravirt_patch_template pv_ops = { .irq.save_fl = __PV_IS_CALLEE_SAVE(pv_native_save_fl), .irq.irq_disable = __PV_IS_CALLEE_SAVE(pv_native_irq_disable), .irq.irq_enable = __PV_IS_CALLEE_SAVE(pv_native_irq_enable), +#endif /* CONFIG_PARAVIRT_XXL */ + + /* Irq HLT ops. */ .irq.safe_halt = pv_native_safe_halt, .irq.halt = native_halt, -#endif /* CONFIG_PARAVIRT_XXL */ /* Mmu ops. */ .mmu.flush_tlb_user = native_flush_tlb_local,

2 months, 3 weeks

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[PATCH 5.10/5.15] Bluetooth: hci_event: Align BR/EDR JUST_WORKS paring with LE

by Xiangyu Chen

From: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> commit b25e11f978b63cb7857890edb3a698599cddb10e upstream. This aligned BR/EDR JUST_WORKS method with LE which since 92516cd97fd4 ("Bluetooth: Always request for user confirmation for Just Works") always request user confirmation with confirm_hint set since the likes of bluetoothd have dedicated policy around JUST_WORKS method (e.g. main.conf:JustWorksRepairing). CVE: CVE-2024-8805 Cc: stable(a)vger.kernel.org Fixes: ba15a58b179e ("Bluetooth: Fix SSP acceptor just-works confirmation without MITM") Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Tested-by: Kiran K <kiran.k(a)intel.com> Signed-off-by: Xiangyu Chen <xiangyu.chen(a)windriver.com> Signed-off-by: He Zhe <zhe.he(a)windriver.com> --- Verified the build test. --- net/bluetooth/hci_event.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 50e21f67a73d..83af50c3838a 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -4859,19 +4859,16 @@ static void hci_user_confirm_request_evt(struct hci_dev *hdev, goto unlock; } - /* If no side requires MITM protection; auto-accept */ + /* If no side requires MITM protection; use JUST_CFM method */ if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { - /* If we're not the initiators request authorization to - * proceed from user space (mgmt_user_confirm with - * confirm_hint set to 1). The exception is if neither - * side had MITM or if the local IO capability is - * NoInputNoOutput, in which case we do auto-accept + /* If we're not the initiator of request authorization and the + * local IO capability is not NoInputNoOutput, use JUST_WORKS + * method (mgmt_user_confirm with confirm_hint set to 1). */ if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && - conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && - (loc_mitm || rem_mitm)) { + conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) { BT_DBG("Confirming auto-accept as acceptor"); confirm_hint = 1; goto confirm; -- 2.34.1

2 months, 3 weeks

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FAILED: patch "[PATCH] ARM: 9443/1: Require linker to support KEEP within OVERLAY" failed to apply to 6.13-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.13-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>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.13.y git checkout FETCH_HEAD git cherry-pick -x e7607f7d6d81af71dcc5171278aadccc94d277cd # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025040805-boaster-hazing-36c3@gregkh' --subject-prefix 'PATCH 6.13.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From e7607f7d6d81af71dcc5171278aadccc94d277cd Mon Sep 17 00:00:00 2001 From: Nathan Chancellor <nathan(a)kernel.org> Date: Thu, 20 Mar 2025 22:33:49 +0100 Subject: [PATCH] ARM: 9443/1: Require linker to support KEEP within OVERLAY for DCE ld.lld prior to 21.0.0 does not support using the KEEP keyword within an overlay description, which may be needed to avoid discarding necessary sections within an overlay with '--gc-sections', which can be enabled for the kernel via CONFIG_LD_DEAD_CODE_DATA_ELIMINATION. Disallow CONFIG_LD_DEAD_CODE_DATA_ELIMINATION without support for KEEP within OVERLAY and introduce a macro, OVERLAY_KEEP, that can be used to conditionally add KEEP when it is properly supported to avoid breaking old versions of ld.lld. Cc: stable(a)vger.kernel.org Link: https://github.com/llvm/llvm-project/commit/381599f1fe973afad3094e55ec99b16… Reviewed-by: Linus Walleij <linus.walleij(a)linaro.org> Signed-off-by: Nathan Chancellor <nathan(a)kernel.org> Signed-off-by: Russell King (Oracle) <rmk+kernel(a)armlinux.org.uk> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 202dbd17ad2f..25ed6f1a7c7a 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -121,7 +121,7 @@ config ARM select HAVE_KERNEL_XZ select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M select HAVE_KRETPROBES if HAVE_KPROBES - select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if (LD_VERSION >= 23600 || LD_IS_LLD) + select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if (LD_VERSION >= 23600 || LD_CAN_USE_KEEP_IN_OVERLAY) select HAVE_MOD_ARCH_SPECIFIC select HAVE_NMI select HAVE_OPTPROBES if !THUMB2_KERNEL diff --git a/arch/arm/include/asm/vmlinux.lds.h b/arch/arm/include/asm/vmlinux.lds.h index 89697f204715..a54db342653a 100644 --- a/arch/arm/include/asm/vmlinux.lds.h +++ b/arch/arm/include/asm/vmlinux.lds.h @@ -34,6 +34,12 @@ #define NOCROSSREFS #endif +#ifdef CONFIG_LD_CAN_USE_KEEP_IN_OVERLAY +#define OVERLAY_KEEP(x) KEEP(x) +#else +#define OVERLAY_KEEP(x) x +#endif + /* Set start/end symbol names to the LMA for the section */ #define ARM_LMA(sym, section) \ sym##_start = LOADADDR(section); \ diff --git a/init/Kconfig b/init/Kconfig index d0d021b3fa3b..fc994f5cd5db 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -129,6 +129,11 @@ config CC_HAS_COUNTED_BY # https://github.com/llvm/llvm-project/pull/112636 depends on !(CC_IS_CLANG && CLANG_VERSION < 190103) +config LD_CAN_USE_KEEP_IN_OVERLAY + # ld.lld prior to 21.0.0 did not support KEEP within an overlay description + # https://github.com/llvm/llvm-project/pull/130661 + def_bool LD_IS_BFD || LLD_VERSION >= 210000 + config RUSTC_HAS_COERCE_POINTEE def_bool RUSTC_VERSION >= 108400

2 months, 3 weeks

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[PATCH 5.10.y] nvme: avoid double free special payload

by Cliff Liu

From: Chunguang Xu <chunguang.xu(a)shopee.com> [ Upstream commit e5d574ab37f5f2e7937405613d9b1a724811e5ad ] If a discard request needs to be retried, and that retry may fail before a new special payload is added, a double free will result. Clear the RQF_SPECIAL_LOAD when the request is cleaned. Signed-off-by: Chunguang Xu <chunguang.xu(a)shopee.com> Reviewed-by: Sagi Grimberg <sagi(a)grimberg.me> Reviewed-by: Max Gurtovoy <mgurtovoy(a)nvidia.com> Signed-off-by: Keith Busch <kbusch(a)kernel.org> [Minor context change fixed] Signed-off-by: Cliff Liu <donghua.liu(a)windriver.com> Signed-off-by: He Zhe <Zhe.He(a)windriver.com> --- Verified the build test. --- drivers/nvme/host/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 019a6dbdcbc2..7d6aab68446e 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -852,6 +852,7 @@ void nvme_cleanup_cmd(struct request *req) clear_bit_unlock(0, &ns->ctrl->discard_page_busy); else kfree(page_address(page) + req->special_vec.bv_offset); + req->rq_flags &= ~RQF_SPECIAL_PAYLOAD; } } EXPORT_SYMBOL_GPL(nvme_cleanup_cmd); -- 2.34.1

2 months, 3 weeks

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