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[PATCH OLK-6.6] drm/komeda: check for error-valued pointer
by Zeng Heng 15 Jul '24

15 Jul '24

From: Amjad Ouled-Ameur <amjad.ouled-ameur(a)arm.com> stable inclusion from stable-v6.6.35 commit 9460961d82134ceda7377b77a3e3e3531b625dfe category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACQYC CVE: CVE-2024-39505 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit b880018edd3a577e50366338194dee9b899947e0 ] komeda_pipeline_get_state() may return an error-valued pointer, thus check the pointer for negative or null value before dereferencing. Fixes: 502932a03fce ("drm/komeda: Add the initial scaler support for CORE") Signed-off-by: Amjad Ouled-Ameur <amjad.ouled-ameur(a)arm.com> Signed-off-by: Maxime Ripard <mripard(a)kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240610102056.40406-1-amjad.… Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c index f3e744172673..f4e76b46ca32 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c @@ -259,7 +259,7 @@ komeda_component_get_avail_scaler(struct komeda_component *c, u32 avail_scalers; pipe_st = komeda_pipeline_get_state(c->pipeline, state); - if (!pipe_st) + if (IS_ERR_OR_NULL(pipe_st)) return NULL; avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^ -- 2.25.1

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[PATCH openEuler-22.03-LTS-SP1] drm/komeda: check for error-valued pointer
by Zeng Heng 15 Jul '24

15 Jul '24

From: Amjad Ouled-Ameur <amjad.ouled-ameur(a)arm.com> stable inclusion from stable-v5.10.221 commit bda7cdaeebf57e46c1a488ae7a15f6f264691f59 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACQYC CVE: CVE-2024-39505 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit b880018edd3a577e50366338194dee9b899947e0 ] komeda_pipeline_get_state() may return an error-valued pointer, thus check the pointer for negative or null value before dereferencing. Fixes: 502932a03fce ("drm/komeda: Add the initial scaler support for CORE") Signed-off-by: Amjad Ouled-Ameur <amjad.ouled-ameur(a)arm.com> Signed-off-by: Maxime Ripard <mripard(a)kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240610102056.40406-1-amjad.… Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c index c3cdf283ecef..6e115782bf89 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c @@ -259,7 +259,7 @@ komeda_component_get_avail_scaler(struct komeda_component *c, u32 avail_scalers; pipe_st = komeda_pipeline_get_state(c->pipeline, state); - if (!pipe_st) + if (IS_ERR_OR_NULL(pipe_st)) return NULL; avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^ -- 2.25.1

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[PATCH OLK-5.10] drm/komeda: check for error-valued pointer
by Zeng Heng 15 Jul '24

15 Jul '24

From: Amjad Ouled-Ameur <amjad.ouled-ameur(a)arm.com> stable inclusion from stable-v5.10.221 commit bda7cdaeebf57e46c1a488ae7a15f6f264691f59 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACQYC CVE: CVE-2024-39505 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit b880018edd3a577e50366338194dee9b899947e0 ] komeda_pipeline_get_state() may return an error-valued pointer, thus check the pointer for negative or null value before dereferencing. Fixes: 502932a03fce ("drm/komeda: Add the initial scaler support for CORE") Signed-off-by: Amjad Ouled-Ameur <amjad.ouled-ameur(a)arm.com> Signed-off-by: Maxime Ripard <mripard(a)kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240610102056.40406-1-amjad.… Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c index c3cdf283ecef..6e115782bf89 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c @@ -259,7 +259,7 @@ komeda_component_get_avail_scaler(struct komeda_component *c, u32 avail_scalers; pipe_st = komeda_pipeline_get_state(c->pipeline, state); - if (!pipe_st) + if (IS_ERR_OR_NULL(pipe_st)) return NULL; avail_scalers = (pipe_st->active_comps & KOMEDA_PIPELINE_SCALERS) ^ -- 2.25.1

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[PATCH OLK-6.6 0/1] kvm: add cvm coda feature
by l00500167 15 Jul '24

15 Jul '24

virtCCA feature l00500167 (1): kvm: add coda feature Signed-off-by: l00500167 <lijunbin4(a)huawei.com> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 14 ++++++++++++++ include/linux/iommu.h | 4 +++- 2 files changed, 17 insertions(+), 1 deletion(-) -- 2.25.1

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[PATCH openEuler-22.03-LTS-SP1] f2fs: remove clear SB_INLINECRYPT flag in default_options
by Yifan Qiao 15 Jul '24

15 Jul '24

From: Yunlei He <heyunlei(a)oppo.com> stable inclusion from stable-v5.10.221 commit 38a82c8d00638bb642bef787eb1d5e0e4d3b7d71 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACZZP CVE: CVE-2024-40971 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ac5eecf481c29942eb9a862e758c0c8b68090c33 ] In f2fs_remount, SB_INLINECRYPT flag will be clear and re-set. If create new file or open file during this gap, these files will not use inlinecrypt. Worse case, it may lead to data corruption if wrappedkey_v0 is enable. Thread A: Thread B: -f2fs_remount -f2fs_file_open or f2fs_new_inode -default_options <- clear SB_INLINECRYPT flag -fscrypt_select_encryption_impl -parse_options <- set SB_INLINECRYPT again Signed-off-by: Yunlei He <heyunlei(a)oppo.com> Reviewed-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Conflicts: fs/f2fs/super.c [Context differences] Signed-off-by: Yifan Qiao <qiaoyifan4(a)huawei.com> --- fs/f2fs/super.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index fba413ced982..565289233b3b 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1714,8 +1714,6 @@ static void default_options(struct f2fs_sb_info *sbi) F2FS_OPTION(sbi).compress_ext_cnt = 0; F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; - sbi->sb->s_flags &= ~SB_INLINECRYPT; - set_opt(sbi, INLINE_XATTR); set_opt(sbi, INLINE_DATA); set_opt(sbi, INLINE_DENTRY); -- 2.39.2

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[PATCH OLK-5.10] f2fs: remove clear SB_INLINECRYPT flag in default_options
by Yifan Qiao 15 Jul '24

15 Jul '24

From: Yunlei He <heyunlei(a)oppo.com> stable inclusion from stable-v5.10.221 commit 38a82c8d00638bb642bef787eb1d5e0e4d3b7d71 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACZZP CVE: CVE-2024-40971 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ac5eecf481c29942eb9a862e758c0c8b68090c33 ] In f2fs_remount, SB_INLINECRYPT flag will be clear and re-set. If create new file or open file during this gap, these files will not use inlinecrypt. Worse case, it may lead to data corruption if wrappedkey_v0 is enable. Thread A: Thread B: -f2fs_remount -f2fs_file_open or f2fs_new_inode -default_options <- clear SB_INLINECRYPT flag -fscrypt_select_encryption_impl -parse_options <- set SB_INLINECRYPT again Signed-off-by: Yunlei He <heyunlei(a)oppo.com> Reviewed-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Conflicts: fs/f2fs/super.c [Context differences] Signed-off-by: Yifan Qiao <qiaoyifan4(a)huawei.com> --- fs/f2fs/super.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 6a214366970c..daa31574acfb 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1713,8 +1713,6 @@ static void default_options(struct f2fs_sb_info *sbi) F2FS_OPTION(sbi).compress_ext_cnt = 0; F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; - sbi->sb->s_flags &= ~SB_INLINECRYPT; - set_opt(sbi, INLINE_XATTR); set_opt(sbi, INLINE_DATA); set_opt(sbi, INLINE_DENTRY); -- 2.39.2

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[PATCH OLK-6.6 0/2] CVE-2024-40955
by Yifan Qiao 15 Jul '24

15 Jul '24

Baokun Li (2): ext4: avoid overflow when setting values via sysfs ext4: fix slab-out-of-bounds in ext4_mb_find_good_group_avg_frag_lists() fs/ext4/mballoc.c | 4 ++++ fs/ext4/sysfs.c | 24 ++++++++++++++++++------ 2 files changed, 22 insertions(+), 6 deletions(-) -- 2.39.2

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[PATCH openEuler-1.0-LTS] ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine."
by Zeng Heng 15 Jul '24

15 Jul '24

From: Raju Rangoju <Raju.Rangoju(a)amd.com> stable inclusion from stable-v4.19.317 commit 435ecc978c3d5d0c4e172ec5b956dc1904061d98 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAD09L CVE: CVE-2024-40984 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit a83e1385b780d41307433ddbc86e3c528db031f0 ] Undo the modifications made in commit d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine.""). The initial purpose of this commit was to stop memory mappings for operation regions from overlapping page boundaries, as it can trigger warnings if different page attributes are present. However, it was found that when this situation arises, mapping continues until the boundary's end, but there is still an attempt to read/write the entire length of the map, leading to a NULL pointer deference. For example, if a four-byte mapping request is made but only one byte is mapped because it hits the current page boundary's end, a four-byte read/write attempt is still made, resulting in a NULL pointer deference. Instead, map the entire length, as the ACPI specification does not mandate that it must be within the same page boundary. It is permissible for it to be mapped across different regions. Link: https://github.com/acpica/acpica/pull/954 Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218849 Fixes: d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine."") Co-developed-by: Sanath S <Sanath.S(a)amd.com> Signed-off-by: Sanath S <Sanath.S(a)amd.com> Signed-off-by: Raju Rangoju <Raju.Rangoju(a)amd.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/acpi/acpica/exregion.c | 23 ++--------------------- 1 file changed, 2 insertions(+), 21 deletions(-) diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c index 97bbfd07fcf7..2d99cbbf82d1 100644 --- a/drivers/acpi/acpica/exregion.c +++ b/drivers/acpi/acpica/exregion.c @@ -43,7 +43,6 @@ acpi_ex_system_memory_space_handler(u32 function, struct acpi_mem_space_context *mem_info = region_context; u32 length; acpi_size map_length; - acpi_size page_boundary_map_length; #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED u32 remainder; #endif @@ -120,26 +119,8 @@ acpi_ex_system_memory_space_handler(u32 function, map_length = (acpi_size) ((mem_info->address + mem_info->length) - address); - /* - * If mapping the entire remaining portion of the region will cross - * a page boundary, just map up to the page boundary, do not cross. - * On some systems, crossing a page boundary while mapping regions - * can cause warnings if the pages have different attributes - * due to resource management. - * - * This has the added benefit of constraining a single mapping to - * one page, which is similar to the original code that used a 4k - * maximum window. - */ - page_boundary_map_length = (acpi_size) - (ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address); - if (page_boundary_map_length == 0) { - page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE; - } - - if (map_length > page_boundary_map_length) { - map_length = page_boundary_map_length; - } + if (map_length > ACPI_DEFAULT_PAGE_SIZE) + map_length = ACPI_DEFAULT_PAGE_SIZE; /* Create a new mapping starting at the address given */ -- 2.25.1

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[PATCH openEuler-22.03-LTS-SP1] ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine."
by Zeng Heng 15 Jul '24

15 Jul '24

From: Raju Rangoju <Raju.Rangoju(a)amd.com> stable inclusion from stable-v5.10.221 commit 6eca23100e9030725f69c1babacd58803f29ec8d category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAD09L CVE: CVE-2024-40984 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit a83e1385b780d41307433ddbc86e3c528db031f0 ] Undo the modifications made in commit d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine.""). The initial purpose of this commit was to stop memory mappings for operation regions from overlapping page boundaries, as it can trigger warnings if different page attributes are present. However, it was found that when this situation arises, mapping continues until the boundary's end, but there is still an attempt to read/write the entire length of the map, leading to a NULL pointer deference. For example, if a four-byte mapping request is made but only one byte is mapped because it hits the current page boundary's end, a four-byte read/write attempt is still made, resulting in a NULL pointer deference. Instead, map the entire length, as the ACPI specification does not mandate that it must be within the same page boundary. It is permissible for it to be mapped across different regions. Link: https://github.com/acpica/acpica/pull/954 Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218849 Fixes: d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine."") Co-developed-by: Sanath S <Sanath.S(a)amd.com> Signed-off-by: Sanath S <Sanath.S(a)amd.com> Signed-off-by: Raju Rangoju <Raju.Rangoju(a)amd.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/acpi/acpica/exregion.c | 23 ++--------------------- 1 file changed, 2 insertions(+), 21 deletions(-) diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c index 4914dbc44517..5bbbd015de5a 100644 --- a/drivers/acpi/acpica/exregion.c +++ b/drivers/acpi/acpica/exregion.c @@ -44,7 +44,6 @@ acpi_ex_system_memory_space_handler(u32 function, struct acpi_mem_mapping *mm = mem_info->cur_mm; u32 length; acpi_size map_length; - acpi_size page_boundary_map_length; #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED u32 remainder; #endif @@ -138,26 +137,8 @@ acpi_ex_system_memory_space_handler(u32 function, map_length = (acpi_size) ((mem_info->address + mem_info->length) - address); - /* - * If mapping the entire remaining portion of the region will cross - * a page boundary, just map up to the page boundary, do not cross. - * On some systems, crossing a page boundary while mapping regions - * can cause warnings if the pages have different attributes - * due to resource management. - * - * This has the added benefit of constraining a single mapping to - * one page, which is similar to the original code that used a 4k - * maximum window. - */ - page_boundary_map_length = (acpi_size) - (ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address); - if (page_boundary_map_length == 0) { - page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE; - } - - if (map_length > page_boundary_map_length) { - map_length = page_boundary_map_length; - } + if (map_length > ACPI_DEFAULT_PAGE_SIZE) + map_length = ACPI_DEFAULT_PAGE_SIZE; /* Create a new mapping starting at the address given */ -- 2.25.1

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[PATCH OLK-5.10] ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine."
by Zeng Heng 15 Jul '24

15 Jul '24

From: Raju Rangoju <Raju.Rangoju(a)amd.com> stable inclusion from stable-v5.10.221 commit 6eca23100e9030725f69c1babacd58803f29ec8d category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAD09L CVE: CVE-2024-40984 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit a83e1385b780d41307433ddbc86e3c528db031f0 ] Undo the modifications made in commit d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine.""). The initial purpose of this commit was to stop memory mappings for operation regions from overlapping page boundaries, as it can trigger warnings if different page attributes are present. However, it was found that when this situation arises, mapping continues until the boundary's end, but there is still an attempt to read/write the entire length of the map, leading to a NULL pointer deference. For example, if a four-byte mapping request is made but only one byte is mapped because it hits the current page boundary's end, a four-byte read/write attempt is still made, resulting in a NULL pointer deference. Instead, map the entire length, as the ACPI specification does not mandate that it must be within the same page boundary. It is permissible for it to be mapped across different regions. Link: https://github.com/acpica/acpica/pull/954 Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218849 Fixes: d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine."") Co-developed-by: Sanath S <Sanath.S(a)amd.com> Signed-off-by: Sanath S <Sanath.S(a)amd.com> Signed-off-by: Raju Rangoju <Raju.Rangoju(a)amd.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/acpi/acpica/exregion.c | 23 ++--------------------- 1 file changed, 2 insertions(+), 21 deletions(-) diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c index 4914dbc44517..5bbbd015de5a 100644 --- a/drivers/acpi/acpica/exregion.c +++ b/drivers/acpi/acpica/exregion.c @@ -44,7 +44,6 @@ acpi_ex_system_memory_space_handler(u32 function, struct acpi_mem_mapping *mm = mem_info->cur_mm; u32 length; acpi_size map_length; - acpi_size page_boundary_map_length; #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED u32 remainder; #endif @@ -138,26 +137,8 @@ acpi_ex_system_memory_space_handler(u32 function, map_length = (acpi_size) ((mem_info->address + mem_info->length) - address); - /* - * If mapping the entire remaining portion of the region will cross - * a page boundary, just map up to the page boundary, do not cross. - * On some systems, crossing a page boundary while mapping regions - * can cause warnings if the pages have different attributes - * due to resource management. - * - * This has the added benefit of constraining a single mapping to - * one page, which is similar to the original code that used a 4k - * maximum window. - */ - page_boundary_map_length = (acpi_size) - (ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address); - if (page_boundary_map_length == 0) { - page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE; - } - - if (map_length > page_boundary_map_length) { - map_length = page_boundary_map_length; - } + if (map_length > ACPI_DEFAULT_PAGE_SIZE) + map_length = ACPI_DEFAULT_PAGE_SIZE; /* Create a new mapping starting at the address given */ -- 2.25.1

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[PATCH OLK-6.6] ACPICA: Revert "ACPICA: avoid Info: mapping multiple BARs. Your kernel is fine."
by Zeng Heng 15 Jul '24

15 Jul '24

From: Raju Rangoju <Raju.Rangoju(a)amd.com> stable inclusion from stable-v6.6.36 commit 434c6b924e1f4c219aab2d9e05fe79c5364e37d3 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAD09L CVE: CVE-2024-40984 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit a83e1385b780d41307433ddbc86e3c528db031f0 ] Undo the modifications made in commit d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine.""). The initial purpose of this commit was to stop memory mappings for operation regions from overlapping page boundaries, as it can trigger warnings if different page attributes are present. However, it was found that when this situation arises, mapping continues until the boundary's end, but there is still an attempt to read/write the entire length of the map, leading to a NULL pointer deference. For example, if a four-byte mapping request is made but only one byte is mapped because it hits the current page boundary's end, a four-byte read/write attempt is still made, resulting in a NULL pointer deference. Instead, map the entire length, as the ACPI specification does not mandate that it must be within the same page boundary. It is permissible for it to be mapped across different regions. Link: https://github.com/acpica/acpica/pull/954 Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218849 Fixes: d410ee5109a1 ("ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine."") Co-developed-by: Sanath S <Sanath.S(a)amd.com> Signed-off-by: Sanath S <Sanath.S(a)amd.com> Signed-off-by: Raju Rangoju <Raju.Rangoju(a)amd.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/acpi/acpica/exregion.c | 23 ++--------------------- 1 file changed, 2 insertions(+), 21 deletions(-) diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c index 8907b8bf4267..c49b9f8de723 100644 --- a/drivers/acpi/acpica/exregion.c +++ b/drivers/acpi/acpica/exregion.c @@ -44,7 +44,6 @@ acpi_ex_system_memory_space_handler(u32 function, struct acpi_mem_mapping *mm = mem_info->cur_mm; u32 length; acpi_size map_length; - acpi_size page_boundary_map_length; #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED u32 remainder; #endif @@ -138,26 +137,8 @@ acpi_ex_system_memory_space_handler(u32 function, map_length = (acpi_size) ((mem_info->address + mem_info->length) - address); - /* - * If mapping the entire remaining portion of the region will cross - * a page boundary, just map up to the page boundary, do not cross. - * On some systems, crossing a page boundary while mapping regions - * can cause warnings if the pages have different attributes - * due to resource management. - * - * This has the added benefit of constraining a single mapping to - * one page, which is similar to the original code that used a 4k - * maximum window. - */ - page_boundary_map_length = (acpi_size) - (ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address); - if (page_boundary_map_length == 0) { - page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE; - } - - if (map_length > page_boundary_map_length) { - map_length = page_boundary_map_length; - } + if (map_length > ACPI_DEFAULT_PAGE_SIZE) + map_length = ACPI_DEFAULT_PAGE_SIZE; /* Create a new mapping starting at the address given */ -- 2.25.1

2 1

[PATCH OLK-6.6 1/1] kvm: add coda feature
by l00500167 15 Jul '24

15 Jul '24

virtCCA feature Signed-off-by: l00500167 <lijunbin4(a)huawei.com> --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 14 ++++++++++++++ include/linux/iommu.h | 4 +++- 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index 859d21729..0f2acb4ed 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -625,6 +625,9 @@ struct arm_smmu_strtab_l1_desc { struct arm_smmu_ste *l2ptr; dma_addr_t l2ptr_dma; +#ifdef CONFIG_CVM_HOST + bool is_sync; +#endif }; struct arm_smmu_ctx_desc { @@ -750,6 +753,12 @@ struct arm_smmu_device { struct mutex streams_mutex; bool bypass; +#ifdef CONFIG_CVM_HOST + int s_evtq_irq; + int s_gerr_irq; + resource_size_t ioaddr; + uint64_t id; +#endif }; struct arm_smmu_stream { @@ -802,6 +811,11 @@ struct arm_smmu_domain { spinlock_t devices_lock; struct list_head mmu_notifiers; +#ifdef CONFIG_CVM_HOST + bool secure; + struct list_head node; + struct kvm *kvm; +#endif }; static inline struct arm_smmu_domain *to_smmu_domain(struct iommu_domain *dom) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 1d70dd0d0..840a3b89f 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -635,7 +635,9 @@ struct iommu_ops { struct iommu_domain *blocked_domain; struct iommu_domain *default_domain; - KABI_RESERVE(1) +#ifdef CONFIG_CVM_HOST + int (*iommu_enable_secure)(struct iommu_domain *domain); +#endif KABI_RESERVE(2) KABI_RESERVE(3) KABI_RESERVE(4) -- 2.25.1

2 1

[PATCH OLK-6.6 1/1] kvm: add coda feature
by l00500167 15 Jul '24

15 Jul '24

virtcca feature Signed-off-by: l00500167 <lijunbin4(a)huawei.com> --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 14 ++++++++++++++ include/linux/iommu.h | 4 +++- 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index 859d21729..0f2acb4ed 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -625,6 +625,9 @@ struct arm_smmu_strtab_l1_desc { struct arm_smmu_ste *l2ptr; dma_addr_t l2ptr_dma; +#ifdef CONFIG_CVM_HOST + bool is_sync; +#endif }; struct arm_smmu_ctx_desc { @@ -750,6 +753,12 @@ struct arm_smmu_device { struct mutex streams_mutex; bool bypass; +#ifdef CONFIG_CVM_HOST + int s_evtq_irq; + int s_gerr_irq; + resource_size_t ioaddr; + uint64_t id; +#endif }; struct arm_smmu_stream { @@ -802,6 +811,11 @@ struct arm_smmu_domain { spinlock_t devices_lock; struct list_head mmu_notifiers; +#ifdef CONFIG_CVM_HOST + bool secure; + struct list_head node; + struct kvm *kvm; +#endif }; static inline struct arm_smmu_domain *to_smmu_domain(struct iommu_domain *dom) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 1d70dd0d0..840a3b89f 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -635,7 +635,9 @@ struct iommu_ops { struct iommu_domain *blocked_domain; struct iommu_domain *default_domain; - KABI_RESERVE(1) +#ifdef CONFIG_CVM_HOST + int (*iommu_enable_secure)(struct iommu_domain *domain); +#endif KABI_RESERVE(2) KABI_RESERVE(3) KABI_RESERVE(4) -- 2.25.1

2 1

[PATCH OLK-6.6 1/1] kvm: add coda feature
by l00500167 15 Jul '24

15 Jul '24

virtcca coda feature Signed-off-by: l00500167 <lijunbin4(a)huawei.com> --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 14 ++++++++++++++ include/linux/iommu.h | 4 +++- 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index 859d21729..0f2acb4ed 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -625,6 +625,9 @@ struct arm_smmu_strtab_l1_desc { struct arm_smmu_ste *l2ptr; dma_addr_t l2ptr_dma; +#ifdef CONFIG_CVM_HOST + bool is_sync; +#endif }; struct arm_smmu_ctx_desc { @@ -750,6 +753,12 @@ struct arm_smmu_device { struct mutex streams_mutex; bool bypass; +#ifdef CONFIG_CVM_HOST + int s_evtq_irq; + int s_gerr_irq; + resource_size_t ioaddr; + uint64_t id; +#endif }; struct arm_smmu_stream { @@ -802,6 +811,11 @@ struct arm_smmu_domain { spinlock_t devices_lock; struct list_head mmu_notifiers; +#ifdef CONFIG_CVM_HOST + bool secure; + struct list_head node; + struct kvm *kvm; +#endif }; static inline struct arm_smmu_domain *to_smmu_domain(struct iommu_domain *dom) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 1d70dd0d0..840a3b89f 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -635,7 +635,9 @@ struct iommu_ops { struct iommu_domain *blocked_domain; struct iommu_domain *default_domain; - KABI_RESERVE(1) +#ifdef CONFIG_CVM_HOST + int (*iommu_enable_secure)(struct iommu_domain *domain); +#endif KABI_RESERVE(2) KABI_RESERVE(3) KABI_RESERVE(4) -- 2.25.1

2 1

[PATCH OLK-6.6] kvm: add coda feature
by l00500167 15 Jul '24

15 Jul '24

virtcca feature Signed-off-by: l00500167 <lijunbin4(a)huawei.com> --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 14 ++++++++++++++ include/linux/iommu.h | 3 +++ 2 files changed, 17 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index 859d21729..0f2acb4ed 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -625,6 +625,9 @@ struct arm_smmu_strtab_l1_desc { struct arm_smmu_ste *l2ptr; dma_addr_t l2ptr_dma; +#ifdef CONFIG_CVM_HOST + bool is_sync; +#endif }; struct arm_smmu_ctx_desc { @@ -750,6 +753,12 @@ struct arm_smmu_device { struct mutex streams_mutex; bool bypass; +#ifdef CONFIG_CVM_HOST + int s_evtq_irq; + int s_gerr_irq; + resource_size_t ioaddr; + uint64_t id; +#endif }; struct arm_smmu_stream { @@ -802,6 +811,11 @@ struct arm_smmu_domain { spinlock_t devices_lock; struct list_head mmu_notifiers; +#ifdef CONFIG_CVM_HOST + bool secure; + struct list_head node; + struct kvm *kvm; +#endif }; static inline struct arm_smmu_domain *to_smmu_domain(struct iommu_domain *dom) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 1d70dd0d0..e3186fbd4 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -635,6 +635,9 @@ struct iommu_ops { struct iommu_domain *blocked_domain; struct iommu_domain *default_domain; +#ifdef CONFIG_CVM_HOST + int (*iommu_enable_secure)(struct iommu_domain *domain); +#endif - KABI_RESERVE(1) KABI_RESERVE(2) KABI_RESERVE(3) -- 2.25.1

2 2

[PATCH OLK-6.6] f2fs: remove clear SB_INLINECRYPT flag in default_options
by Yifan Qiao 15 Jul '24

15 Jul '24

From: Yunlei He <heyunlei(a)oppo.com> stable inclusion from stable-v6.6.36 commit eddeb8d941d5be11a9da5637dbe81ac37e8449a2 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACZZP CVE: CVE-2024-40971 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ac5eecf481c29942eb9a862e758c0c8b68090c33 ] In f2fs_remount, SB_INLINECRYPT flag will be clear and re-set. If create new file or open file during this gap, these files will not use inlinecrypt. Worse case, it may lead to data corruption if wrappedkey_v0 is enable. Thread A: Thread B: -f2fs_remount -f2fs_file_open or f2fs_new_inode -default_options <- clear SB_INLINECRYPT flag -fscrypt_select_encryption_impl -parse_options <- set SB_INLINECRYPT again Signed-off-by: Yunlei He <heyunlei(a)oppo.com> Reviewed-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Yifan Qiao <qiaoyifan4(a)huawei.com> --- fs/f2fs/super.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b1a239f3eb66..534d8bb1f26c 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -2186,8 +2186,6 @@ static void default_options(struct f2fs_sb_info *sbi, bool remount) F2FS_OPTION(sbi).memory_mode = MEMORY_MODE_NORMAL; F2FS_OPTION(sbi).errors = MOUNT_ERRORS_CONTINUE; - sbi->sb->s_flags &= ~SB_INLINECRYPT; - set_opt(sbi, INLINE_XATTR); set_opt(sbi, INLINE_DATA); set_opt(sbi, INLINE_DENTRY); -- 2.39.2

2 1

[PATCH OLK-5.10] f2fs: remove clear SB_INLINECRYPT flag in default_options
by Yifan Qiao 15 Jul '24

15 Jul '24

From: Yunlei He <heyunlei(a)oppo.com> stable inclusion from stable-v5.10.221 commit 38a82c8d00638bb642bef787eb1d5e0e4d3b7d71 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACZZP CVE: CVE-2024-40971 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ac5eecf481c29942eb9a862e758c0c8b68090c33 ] In f2fs_remount, SB_INLINECRYPT flag will be clear and re-set. If create new file or open file during this gap, these files will not use inlinecrypt. Worse case, it may lead to data corruption if wrappedkey_v0 is enable. Thread A: Thread B: -f2fs_remount -f2fs_file_open or f2fs_new_inode -default_options <- clear SB_INLINECRYPT flag -fscrypt_select_encryption_impl -parse_options <- set SB_INLINECRYPT again Signed-off-by: Yunlei He <heyunlei(a)oppo.com> Reviewed-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Conflicts: fs/f2f2/super.c [Context differences] Signed-off-by: Yifan Qiao <qiaoyifan4(a)huawei.com> --- fs/f2fs/super.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 6a214366970c..daa31574acfb 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1713,8 +1713,6 @@ static void default_options(struct f2fs_sb_info *sbi) F2FS_OPTION(sbi).compress_ext_cnt = 0; F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; - sbi->sb->s_flags &= ~SB_INLINECRYPT; - set_opt(sbi, INLINE_XATTR); set_opt(sbi, INLINE_DATA); set_opt(sbi, INLINE_DENTRY); -- 2.39.2

2 1

[PATCH openEuler-22.03-LTS-SP1] f2fs: remove clear SB_INLINECRYPT flag in default_options
by Yifan Qiao 15 Jul '24

15 Jul '24

From: Yunlei He <heyunlei(a)oppo.com> stable inclusion from stable-v5.10.221 commit 38a82c8d00638bb642bef787eb1d5e0e4d3b7d71 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACZZP CVE: CVE-2024-40971 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ac5eecf481c29942eb9a862e758c0c8b68090c33 ] In f2fs_remount, SB_INLINECRYPT flag will be clear and re-set. If create new file or open file during this gap, these files will not use inlinecrypt. Worse case, it may lead to data corruption if wrappedkey_v0 is enable. Thread A: Thread B: -f2fs_remount -f2fs_file_open or f2fs_new_inode -default_options <- clear SB_INLINECRYPT flag -fscrypt_select_encryption_impl -parse_options <- set SB_INLINECRYPT again Signed-off-by: Yunlei He <heyunlei(a)oppo.com> Reviewed-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Conflicts: fs/f2f2/super.c [Context differences] Signed-off-by: Yifan Qiao <qiaoyifan4(a)huawei.com> --- fs/f2fs/super.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index fba413ced982..565289233b3b 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1714,8 +1714,6 @@ static void default_options(struct f2fs_sb_info *sbi) F2FS_OPTION(sbi).compress_ext_cnt = 0; F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; - sbi->sb->s_flags &= ~SB_INLINECRYPT; - set_opt(sbi, INLINE_XATTR); set_opt(sbi, INLINE_DATA); set_opt(sbi, INLINE_DENTRY); -- 2.39.2

2 1

[PATCH openEuler-22.03-LTS-SP1] f2fs: remove clear SB_INLINECRYPT flag in default_options
by Yifan Qiao 15 Jul '24

15 Jul '24

From: Yunlei He <heyunlei(a)oppo.com> stable inclusion from stable-v5.10.221 commit 38a82c8d00638bb642bef787eb1d5e0e4d3b7d71 category: bugfix bugzilla: 190178 CVE: CVE-2024-40971 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ac5eecf481c29942eb9a862e758c0c8b68090c33 ] In f2fs_remount, SB_INLINECRYPT flag will be clear and re-set. If create new file or open file during this gap, these files will not use inlinecrypt. Worse case, it may lead to data corruption if wrappedkey_v0 is enable. Thread A: Thread B: -f2fs_remount -f2fs_file_open or f2fs_new_inode -default_options <- clear SB_INLINECRYPT flag -fscrypt_select_encryption_impl -parse_options <- set SB_INLINECRYPT again Signed-off-by: Yunlei He <heyunlei(a)oppo.com> Reviewed-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Conflicts: fs/f2f2/super.c [Context differences] Signed-off-by: Yifan Qiao <qiaoyifan4(a)huawei.com> --- fs/f2fs/super.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index fba413ced982..565289233b3b 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1714,8 +1714,6 @@ static void default_options(struct f2fs_sb_info *sbi) F2FS_OPTION(sbi).compress_ext_cnt = 0; F2FS_OPTION(sbi).bggc_mode = BGGC_MODE_ON; - sbi->sb->s_flags &= ~SB_INLINECRYPT; - set_opt(sbi, INLINE_XATTR); set_opt(sbi, INLINE_DATA); set_opt(sbi, INLINE_DENTRY); -- 2.39.2

2 1

[PATCH OLK-6.6] ext4: fix slab-out-of-bounds in ext4_mb_find_good_group_avg_frag_lists()
by Yifan Qiao 15 Jul '24

15 Jul '24

From: Baokun Li <libaokun1(a)huawei.com> stable inclusion from stable-v6.6.36 commit 677ff4589f1501578fa903a25bb14831d0607992 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAD018 CVE: CVE-2024-40955 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 13df4d44a3aaabe61cd01d277b6ee23ead2a5206 upstream. We can trigger a slab-out-of-bounds with the following commands: mkfs.ext4 -F /dev/$disk 10G mount /dev/$disk /tmp/test echo 2147483647 > /sys/fs/ext4/$disk/mb_group_prealloc echo test > /tmp/test/file && sync ================================================================== BUG: KASAN: slab-out-of-bounds in ext4_mb_find_good_group_avg_frag_lists+0x8a/0x200 [ext4] Read of size 8 at addr ffff888121b9d0f0 by task kworker/u2:0/11 CPU: 0 PID: 11 Comm: kworker/u2:0 Tainted: GL 6.7.0-next-20240118 #521 Call Trace: dump_stack_lvl+0x2c/0x50 kasan_report+0xb6/0xf0 ext4_mb_find_good_group_avg_frag_lists+0x8a/0x200 [ext4] ext4_mb_regular_allocator+0x19e9/0x2370 [ext4] ext4_mb_new_blocks+0x88a/0x1370 [ext4] ext4_ext_map_blocks+0x14f7/0x2390 [ext4] ext4_map_blocks+0x569/0xea0 [ext4] ext4_do_writepages+0x10f6/0x1bc0 [ext4] [...] ================================================================== The flow of issue triggering is as follows: // Set s_mb_group_prealloc to 2147483647 via sysfs ext4_mb_new_blocks ext4_mb_normalize_request ext4_mb_normalize_group_request ac->ac_g_ex.fe_len = EXT4_SB(sb)->s_mb_group_prealloc ext4_mb_regular_allocator ext4_mb_choose_next_group ext4_mb_choose_next_group_best_avail mb_avg_fragment_size_order order = fls(len) - 2 = 29 ext4_mb_find_good_group_avg_frag_lists frag_list = &sbi->s_mb_avg_fragment_size[order] if (list_empty(frag_list)) // Trigger SOOB! At 4k block size, the length of the s_mb_avg_fragment_size list is 14, but an oversized s_mb_group_prealloc is set, causing slab-out-of-bounds to be triggered by an attempt to access an element at index 29. Add a new attr_id attr_clusters_in_group with values in the range [0, sbi->s_clusters_per_group] and declare mb_group_prealloc as that type to fix the issue. In addition avoid returning an order from mb_avg_fragment_size_order() greater than MB_NUM_ORDERS(sb) and reduce some useless loops. Fixes: 7e170922f06b ("ext4: Add allocation criteria 1.5 (CR1_5)") CC: stable(a)vger.kernel.org Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Reviewed-by: Jan Kara <jack(a)suse.cz> Reviewed-by: Ojaswin Mujoo <ojaswin(a)linux.ibm.com> Link: https://lore.kernel.org/r/20240319113325.3110393-5-libaokun1@huawei.com Signed-off-by: Theodore Ts'o <tytso(a)mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yifan Qiao <qiaoyifan4(a)huawei.com> --- fs/ext4/mballoc.c | 4 ++++ fs/ext4/sysfs.c | 13 ++++++++++++- 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index f6e02978d0e6..9a65cdcc6417 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -834,6 +834,8 @@ static int mb_avg_fragment_size_order(struct super_block *sb, ext4_grpblk_t len) return 0; if (order == MB_NUM_ORDERS(sb)) order--; + if (WARN_ON_ONCE(order > MB_NUM_ORDERS(sb))) + order = MB_NUM_ORDERS(sb) - 1; return order; } @@ -1011,6 +1013,8 @@ static void ext4_mb_choose_next_group_best_avail(struct ext4_allocation_context * goal length. */ order = fls(ac->ac_g_ex.fe_len) - 1; + if (WARN_ON_ONCE(order - 1 > MB_NUM_ORDERS(ac->ac_sb))) + order = MB_NUM_ORDERS(ac->ac_sb); min_order = order - sbi->s_mb_best_avail_max_trim_order; if (min_order < 0) min_order = 0; diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c index 6d332dff79dd..5f3df2931643 100644 --- a/fs/ext4/sysfs.c +++ b/fs/ext4/sysfs.c @@ -29,6 +29,7 @@ typedef enum { attr_trigger_test_error, attr_first_error_time, attr_last_error_time, + attr_clusters_in_group, attr_feature, attr_pointer_ui, attr_pointer_ul, @@ -207,13 +208,14 @@ EXT4_ATTR_FUNC(sra_exceeded_retry_limit, 0444); EXT4_ATTR_OFFSET(inode_readahead_blks, 0644, inode_readahead, ext4_sb_info, s_inode_readahead_blks); +EXT4_ATTR_OFFSET(mb_group_prealloc, 0644, clusters_in_group, + ext4_sb_info, s_mb_group_prealloc); EXT4_RW_ATTR_SBI_UI(inode_goal, s_inode_goal); EXT4_RW_ATTR_SBI_UI(mb_stats, s_mb_stats); EXT4_RW_ATTR_SBI_UI(mb_max_to_scan, s_mb_max_to_scan); EXT4_RW_ATTR_SBI_UI(mb_min_to_scan, s_mb_min_to_scan); EXT4_RW_ATTR_SBI_UI(mb_order2_req, s_mb_order2_reqs); EXT4_RW_ATTR_SBI_UI(mb_stream_req, s_mb_stream_request); -EXT4_RW_ATTR_SBI_UI(mb_group_prealloc, s_mb_group_prealloc); EXT4_RW_ATTR_SBI_UI(mb_max_linear_groups, s_mb_max_linear_groups); EXT4_RW_ATTR_SBI_UI(extent_max_zeroout_kb, s_extent_max_zeroout_kb); EXT4_ATTR(trigger_fs_error, 0200, trigger_test_error); @@ -392,6 +394,7 @@ static ssize_t ext4_attr_show(struct kobject *kobj, (unsigned long long) percpu_counter_sum(&sbi->s_sra_exceeded_retry_limit)); case attr_inode_readahead: + case attr_clusters_in_group: case attr_pointer_ui: if (!ptr) return 0; @@ -468,6 +471,14 @@ static ssize_t ext4_attr_store(struct kobject *kobj, else *((unsigned int *) ptr) = t; return len; + case attr_clusters_in_group: + ret = kstrtouint(skip_spaces(buf), 0, &t); + if (ret) + return ret; + if (t > sbi->s_clusters_per_group) + return -EINVAL; + *((unsigned int *) ptr) = t; + return len; case attr_pointer_ul: if (!ptr) return 0; -- 2.39.2

2 1

[PATCH OLK-6.6] ext4: fix slab-out-of-bounds in ext4_mb_find_good_group_avg_frag_lists()
by Yifan Qiao 15 Jul '24

15 Jul '24

From: Baokun Li <libaokun1(a)huawei.com> stable inclusion from stable-v6.6.36 commit 677ff4589f1501578fa903a25bb14831d0607992 category: bugfix bugzilla: 190177 CVE: CVE-2024-40955 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 13df4d44a3aaabe61cd01d277b6ee23ead2a5206 upstream. We can trigger a slab-out-of-bounds with the following commands: mkfs.ext4 -F /dev/$disk 10G mount /dev/$disk /tmp/test echo 2147483647 > /sys/fs/ext4/$disk/mb_group_prealloc echo test > /tmp/test/file && sync ================================================================== BUG: KASAN: slab-out-of-bounds in ext4_mb_find_good_group_avg_frag_lists+0x8a/0x200 [ext4] Read of size 8 at addr ffff888121b9d0f0 by task kworker/u2:0/11 CPU: 0 PID: 11 Comm: kworker/u2:0 Tainted: GL 6.7.0-next-20240118 #521 Call Trace: dump_stack_lvl+0x2c/0x50 kasan_report+0xb6/0xf0 ext4_mb_find_good_group_avg_frag_lists+0x8a/0x200 [ext4] ext4_mb_regular_allocator+0x19e9/0x2370 [ext4] ext4_mb_new_blocks+0x88a/0x1370 [ext4] ext4_ext_map_blocks+0x14f7/0x2390 [ext4] ext4_map_blocks+0x569/0xea0 [ext4] ext4_do_writepages+0x10f6/0x1bc0 [ext4] [...] ================================================================== The flow of issue triggering is as follows: // Set s_mb_group_prealloc to 2147483647 via sysfs ext4_mb_new_blocks ext4_mb_normalize_request ext4_mb_normalize_group_request ac->ac_g_ex.fe_len = EXT4_SB(sb)->s_mb_group_prealloc ext4_mb_regular_allocator ext4_mb_choose_next_group ext4_mb_choose_next_group_best_avail mb_avg_fragment_size_order order = fls(len) - 2 = 29 ext4_mb_find_good_group_avg_frag_lists frag_list = &sbi->s_mb_avg_fragment_size[order] if (list_empty(frag_list)) // Trigger SOOB! At 4k block size, the length of the s_mb_avg_fragment_size list is 14, but an oversized s_mb_group_prealloc is set, causing slab-out-of-bounds to be triggered by an attempt to access an element at index 29. Add a new attr_id attr_clusters_in_group with values in the range [0, sbi->s_clusters_per_group] and declare mb_group_prealloc as that type to fix the issue. In addition avoid returning an order from mb_avg_fragment_size_order() greater than MB_NUM_ORDERS(sb) and reduce some useless loops. Fixes: 7e170922f06b ("ext4: Add allocation criteria 1.5 (CR1_5)") CC: stable(a)vger.kernel.org Signed-off-by: Baokun Li <libaokun1(a)huawei.com> Reviewed-by: Jan Kara <jack(a)suse.cz> Reviewed-by: Ojaswin Mujoo <ojaswin(a)linux.ibm.com> Link: https://lore.kernel.org/r/20240319113325.3110393-5-libaokun1@huawei.com Signed-off-by: Theodore Ts'o <tytso(a)mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yifan Qiao <qiaoyifan4(a)huawei.com> --- fs/ext4/mballoc.c | 4 ++++ fs/ext4/sysfs.c | 13 ++++++++++++- 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index f6e02978d0e6..9a65cdcc6417 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -834,6 +834,8 @@ static int mb_avg_fragment_size_order(struct super_block *sb, ext4_grpblk_t len) return 0; if (order == MB_NUM_ORDERS(sb)) order--; + if (WARN_ON_ONCE(order > MB_NUM_ORDERS(sb))) + order = MB_NUM_ORDERS(sb) - 1; return order; } @@ -1011,6 +1013,8 @@ static void ext4_mb_choose_next_group_best_avail(struct ext4_allocation_context * goal length. */ order = fls(ac->ac_g_ex.fe_len) - 1; + if (WARN_ON_ONCE(order - 1 > MB_NUM_ORDERS(ac->ac_sb))) + order = MB_NUM_ORDERS(ac->ac_sb); min_order = order - sbi->s_mb_best_avail_max_trim_order; if (min_order < 0) min_order = 0; diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c index 6d332dff79dd..5f3df2931643 100644 --- a/fs/ext4/sysfs.c +++ b/fs/ext4/sysfs.c @@ -29,6 +29,7 @@ typedef enum { attr_trigger_test_error, attr_first_error_time, attr_last_error_time, + attr_clusters_in_group, attr_feature, attr_pointer_ui, attr_pointer_ul, @@ -207,13 +208,14 @@ EXT4_ATTR_FUNC(sra_exceeded_retry_limit, 0444); EXT4_ATTR_OFFSET(inode_readahead_blks, 0644, inode_readahead, ext4_sb_info, s_inode_readahead_blks); +EXT4_ATTR_OFFSET(mb_group_prealloc, 0644, clusters_in_group, + ext4_sb_info, s_mb_group_prealloc); EXT4_RW_ATTR_SBI_UI(inode_goal, s_inode_goal); EXT4_RW_ATTR_SBI_UI(mb_stats, s_mb_stats); EXT4_RW_ATTR_SBI_UI(mb_max_to_scan, s_mb_max_to_scan); EXT4_RW_ATTR_SBI_UI(mb_min_to_scan, s_mb_min_to_scan); EXT4_RW_ATTR_SBI_UI(mb_order2_req, s_mb_order2_reqs); EXT4_RW_ATTR_SBI_UI(mb_stream_req, s_mb_stream_request); -EXT4_RW_ATTR_SBI_UI(mb_group_prealloc, s_mb_group_prealloc); EXT4_RW_ATTR_SBI_UI(mb_max_linear_groups, s_mb_max_linear_groups); EXT4_RW_ATTR_SBI_UI(extent_max_zeroout_kb, s_extent_max_zeroout_kb); EXT4_ATTR(trigger_fs_error, 0200, trigger_test_error); @@ -392,6 +394,7 @@ static ssize_t ext4_attr_show(struct kobject *kobj, (unsigned long long) percpu_counter_sum(&sbi->s_sra_exceeded_retry_limit)); case attr_inode_readahead: + case attr_clusters_in_group: case attr_pointer_ui: if (!ptr) return 0; @@ -468,6 +471,14 @@ static ssize_t ext4_attr_store(struct kobject *kobj, else *((unsigned int *) ptr) = t; return len; + case attr_clusters_in_group: + ret = kstrtouint(skip_spaces(buf), 0, &t); + if (ret) + return ret; + if (t > sbi->s_clusters_per_group) + return -EINVAL; + *((unsigned int *) ptr) = t; + return len; case attr_pointer_ul: if (!ptr) return 0; -- 2.39.2

2 1

[PATCH OLK-6.6 0/1] fix CVE-2024-40934
by Hongbo Li 15 Jul '24

15 Jul '24

Fix CVE-2024-40934. José Expósito (1): HID: logitech-dj: Fix memory leak in logi_dj_recv_switch_to_dj_mode() drivers/hid/hid-logitech-dj.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) -- 2.34.1

2 2

[PATCH openEuler-22.03-LTS-SP1] media: gspca: cpia1: shift-out-of-bounds in set_flicker
by felix 15 Jul '24

15 Jul '24

From: Rajeshwar R Shinde <coolrrsh(a)gmail.com> stable inclusion from stable-v5.10.202 commit c6b6b8692218da73b33b310d7c1df90f115bdd9a category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I9DZOS Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 099be1822d1f095433f4b08af9cc9d6308ec1953 ] Syzkaller reported the following issue: UBSAN: shift-out-of-bounds in drivers/media/usb/gspca/cpia1.c:1031:27 shift exponent 245 is too large for 32-bit type 'int' When the value of the variable "sd->params.exposure.gain" exceeds the number of bits in an integer, a shift-out-of-bounds error is reported. It is triggered because the variable "currentexp" cannot be left-shifted by more than the number of bits in an integer. In order to avoid invalid range during left-shift, the conditional expression is added. Reported-by: syzbot+e27f3dbdab04e43b9f73(a)syzkaller.appspotmail.com Closes: https://lore.kernel.org/all/20230818164522.12806-1-coolrrsh@gmail.com Link: https://syzkaller.appspot.com/bug?extid=e27f3dbdab04e43b9f73 Signed-off-by: Rajeshwar R Shinde <coolrrsh(a)gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: sanglipeng <sanglipeng1(a)jd.com> Signed-off-by: Felix Fu <fuzhen5(a)huawei.com> --- drivers/media/usb/gspca/cpia1.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/usb/gspca/cpia1.c b/drivers/media/usb/gspca/cpia1.c index d93d384286c1..de945e13c7c6 100644 --- a/drivers/media/usb/gspca/cpia1.c +++ b/drivers/media/usb/gspca/cpia1.c @@ -18,6 +18,7 @@ #include <linux/input.h> #include <linux/sched/signal.h> +#include <linux/bitops.h> #include "gspca.h" @@ -1027,6 +1028,8 @@ static int set_flicker(struct gspca_dev *gspca_dev, int on, int apply) sd->params.exposure.expMode = 2; sd->exposure_status = EXPOSURE_NORMAL; } + if (sd->params.exposure.gain >= BITS_PER_TYPE(currentexp)) + return -EINVAL; currentexp = currentexp << sd->params.exposure.gain; sd->params.exposure.gain = 0; /* round down current exposure to nearest value */ -- 2.34.1

2 1

[PATCH OLK-5.10 0/1] fix CVE-2024-40934
by Hongbo Li 15 Jul '24

15 Jul '24

Fix CVE-2024-40934. José Expósito (1): HID: logitech-dj: Fix memory leak in logi_dj_recv_switch_to_dj_mode() drivers/hid/hid-logitech-dj.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) -- 2.34.1

2 2

[PATCH OLK-6.6] ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind()
by Xiongfeng Wang 15 Jul '24

15 Jul '24

From: Simon Trimmer <simont(a)opensource.cirrus.com> mainline inclusion from mainline-v6.10-rc5 commit 6386682cdc8b41319c92fbbe421953e33a28840c category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACS5R CVE: CVE-2024-40964 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- The cs35l41_hda_unbind() function clears the hda_component entry matching it's index and then dereferences the codec pointer held in the first element of the hda_component array, this is an issue when the device index was 0. Instead use the codec pointer stashed in the cs35l41_hda structure as it will still be valid. Fixes: 7cf5ce66dfda ("ALSA: hda: cs35l41: Add device_link between HDA and cs35l41_hda") Signed-off-by: Simon Trimmer <simont(a)opensource.cirrus.com> Link: https://lore.kernel.org/r/20240531120820.35367-1-simont@opensource.cirrus.c… Signed-off-by: Takashi Iwai <tiwai(a)suse.de> Signed-off-by: Xiongfeng Wang <wangxiongfeng2(a)huawei.com> --- sound/pci/hda/cs35l41_hda.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c index 3c157b006a5a..b437beae9b51 100644 --- a/sound/pci/hda/cs35l41_hda.c +++ b/sound/pci/hda/cs35l41_hda.c @@ -1187,7 +1187,7 @@ static void cs35l41_hda_unbind(struct device *dev, struct device *master, void * if (comps[cs35l41->index].dev == dev) { memset(&comps[cs35l41->index], 0, sizeof(*comps)); sleep_flags = lock_system_sleep(); - device_link_remove(&comps->codec->core.dev, cs35l41->dev); + device_link_remove(&cs35l41->codec->core.dev, cs35l41->dev); unlock_system_sleep(sleep_flags); } } -- 2.20.1

2 1

[PATCH openEuler-22.03-LTS-SP1] selinux: avoid dereference of garbage after mount failure
by felix 15 Jul '24

15 Jul '24

From: Christian Göttsche <cgzones(a)googlemail.com> stable inclusion from stable-v6.6.26 commit 477ed6789eb9f3f4d3568bb977f90c863c12724e category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9QG73 CVE: CVE-2024-35904 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 37801a36b4d68892ce807264f784d818f8d0d39b upstream. In case kern_mount() fails and returns an error pointer return in the error branch instead of continuing and dereferencing the error pointer. While on it drop the never read static variable selinuxfs_mount. Cc: stable(a)vger.kernel.org Fixes: 0619f0f5e36f ("selinux: wrap selinuxfs state") Signed-off-by: Christian Göttsche <cgzones(a)googlemail.com> Signed-off-by: Paul Moore <paul(a)paul-moore.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: security/selinux/selinuxfs.c [selinuxfs_mount still in use because of SECURITY_SELINUX_DISABLE, so we reserve it, only deal with kern_mount failure issue] Signed-off-by: Felix Fu <fuzhen5(a)huawei.com> --- security/selinux/selinuxfs.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c index d893c2280f59..97d169679265 100644 --- a/security/selinux/selinuxfs.c +++ b/security/selinux/selinuxfs.c @@ -2232,13 +2232,17 @@ static int __init init_sel_fs(void) pr_err("selinuxfs: could not mount!\n"); err = PTR_ERR(selinuxfs_mount); selinuxfs_mount = NULL; + selinux_null.mnt = NULL; + return err; } + selinux_null.dentry = d_hash_and_lookup(selinux_null.mnt->mnt_root, &null_name); if (IS_ERR(selinux_null.dentry)) { pr_err("selinuxfs: could not lookup null!\n"); err = PTR_ERR(selinux_null.dentry); selinux_null.dentry = NULL; + return err; } return err; -- 2.34.1

2 1

[PATCH OLK-6.6 0/2] nvdimm: Backport some bugfixs
by Zhihao Cheng 15 Jul '24

15 Jul '24

Mathieu Desnoyers (2): nvdimm/pmem: fix leak on dax_add_host() failure dax: alloc_dax() return ERR_PTR(-EOPNOTSUPP) for CONFIG_DAX=n drivers/dax/super.c | 5 +++++ drivers/nvdimm/pmem.c | 3 +-- include/linux/dax.h | 6 +----- 3 files changed, 7 insertions(+), 7 deletions(-) -- 2.31.1

2 3

[PATCH openEuler-22.03-LTS-SP1 0/2] nvdimm: Backport some bugfixs
by Zhihao Cheng 15 Jul '24

15 Jul '24

Luis Chamberlain (1): nvdimm/pmem: use add_disk() error handling Mathieu Desnoyers (1): dax: alloc_dax() return ERR_PTR(-EOPNOTSUPP) for CONFIG_DAX=n drivers/dax/super.c | 5 +++++ drivers/nvdimm/pmem.c | 8 +++++++- include/linux/dax.h | 6 +----- 3 files changed, 13 insertions(+), 6 deletions(-) -- 2.31.1

2 3

[PATCH OLK-5.10 0/2] nvdimm: Backport some bugfixs
by Zhihao Cheng 15 Jul '24

15 Jul '24

Luis Chamberlain (1): nvdimm/pmem: use add_disk() error handling Mathieu Desnoyers (1): dax: alloc_dax() return ERR_PTR(-EOPNOTSUPP) for CONFIG_DAX=n drivers/dax/super.c | 5 +++++ drivers/nvdimm/pmem.c | 8 +++++++- include/linux/dax.h | 6 +----- 3 files changed, 13 insertions(+), 6 deletions(-) -- 2.31.1

2 3

[PATCH openEuler-22.03-LTS-SP1] ALSA: scarlett2: Add clamp() in scarlett2_mixer_ctl_put()
by felix 15 Jul '24

15 Jul '24

From: "Geoffrey D. Bennett" <g(a)b4.vu> stable inclusion from stable-v5.15.148 commit e517645ead5ea22c69d2a44694baa23fe1ce7c2b category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9Q9ID CVE: CVE-2023-52674 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 04f8f053252b86c7583895c962d66747ecdc61b7 ] Ensure the value passed to scarlett2_mixer_ctl_put() is between 0 and SCARLETT2_MIXER_MAX_VALUE so we don't attempt to access outside scarlett2_mixer_values[]. Signed-off-by: Geoffrey D. Bennett <g(a)b4.vu> Fixes: 9e4d5c1be21f ("ALSA: usb-audio: Scarlett Gen 2 mixer interface") Link: https://lore.kernel.org/r/3b19fb3da641b587749b85fe1daa1b4e696c0c1b.17030010… Signed-off-by: Takashi Iwai <tiwai(a)suse.de> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Conflicts: sound/usb/mixer_scarlett_gen2.c [Some context inconsistencies exist in the scarlett2_mixer_ctl_put function, which does not affect the patch] Signed-off-by: Felix Fu <fuzhen5(a)huawei.com> --- sound/usb/mixer_scarlett_gen2.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/usb/mixer_scarlett_gen2.c b/sound/usb/mixer_scarlett_gen2.c index 1b7c7b754c38..6b7c8b8d7111 100644 --- a/sound/usb/mixer_scarlett_gen2.c +++ b/sound/usb/mixer_scarlett_gen2.c @@ -1509,7 +1509,8 @@ static int scarlett2_mixer_ctl_put(struct snd_kcontrol *kctl, mutex_lock(&private->data_mutex); oval = private->mix[elem->control]; - val = ucontrol->value.integer.value[0]; + val = clamp(ucontrol->value.integer.value[0], + 0L, (long)SCARLETT2_MIXER_MAX_VALUE); num_mixer_in = ports[SCARLETT2_PORT_TYPE_MIX].num[SCARLETT2_PORT_OUT]; mix_num = elem->control / num_mixer_in; -- 2.34.1

2 1

[PATCH OLK-6.6] ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind()
by Xiongfeng Wang 15 Jul '24

15 Jul '24

From: Simon Trimmer <simont(a)opensource.cirrus.com> mainline inclusion from mainline-v6.10-rc5 commit 6386682cdc8b41319c92fbbe421953e33a28840c category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACS5R CVE: CVE-2024-40964 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- The cs35l41_hda_unbind() function clears the hda_component entry matching it's index and then dereferences the codec pointer held in the first element of the hda_component array, this is an issue when the device index was 0. Instead use the codec pointer stashed in the cs35l41_hda structure as it will still be valid. Fixes: 7cf5ce66dfda ("ALSA: hda: cs35l41: Add device_link between HDA and cs35l41_hda") Signed-off-by: Simon Trimmer <simont(a)opensource.cirrus.com> Link: https://lore.kernel.org/r/20240531120820.35367-1-simont@opensource.cirrus.c… Signed-off-by: Takashi Iwai <tiwai(a)suse.de> Signed-off-by: Xiongfeng Wang <wangxiongfeng2(a)huawei.com> --- sound/pci/hda/cs35l41_hda.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c index 3c157b006a5a..b437beae9b51 100644 --- a/sound/pci/hda/cs35l41_hda.c +++ b/sound/pci/hda/cs35l41_hda.c @@ -1187,7 +1187,7 @@ static void cs35l41_hda_unbind(struct device *dev, struct device *master, void * if (comps[cs35l41->index].dev == dev) { memset(&comps[cs35l41->index], 0, sizeof(*comps)); sleep_flags = lock_system_sleep(); - device_link_remove(&comps->codec->core.dev, cs35l41->dev); + device_link_remove(&cs35l41->codec->core.dev, cs35l41->dev); unlock_system_sleep(sleep_flags); } } -- 2.20.1

2 1

[PATCH OLK-6.6 0/6] ext4: improve buffered write with more than one blocks_per_folio
by Zhang Yi 15 Jul '24

15 Jul '24

In ext4_iomap_write_begin(), we speed up mapping check by checking the folio dirty bit. If the folio is dirty, it means this folio has just been written and must have a counterpart allocated block or delalloc extent, so we don't need to map the folio again if we write to the same place, this could speed up a lot for the case of repeated overwrite to the same folio. However, we only check the entire folio has been dirty or not, so it doesn't support if we have more than one blocks per folio yet. This series fix the handles of sub-folio properly in iomap, and extend this improvement by checking partial blocks in one folio. Zhang Yi (6): iomap: correct the range of a partial dirty clear iomap: support invalidating partial folios iomap: advance the ifs allocation if we have more than one blocks per folio iomap: correct the dirty length in page mkwrite iomap: add iomap_is_fully_dirty() ext4: improve sub-polio check in ext4_iomap_write_begin() fs/ext4/inode.c | 2 +- fs/iomap/buffered-io.c | 64 ++++++++++++++++++++++++++++++++++++------ include/linux/iomap.h | 1 + 3 files changed, 57 insertions(+), 10 deletions(-) -- 2.31.1

3 10

[PATCH OLK-6.6] ocfs2: fix races between hole punching and AIO+DIO
by Ye Bin 15 Jul '24

15 Jul '24

From: Su Yue <glass.su(a)suse.com> mainline inclusion from mainline-v6.10-rc1 commit 952b023f06a24b2ad6ba67304c4c84d45bea2f18 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAD0L1 CVE: CVE-2024-40943 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… --------------------------- After commit "ocfs2: return real error code in ocfs2_dio_wr_get_block", fstests/generic/300 become from always failed to sometimes failed: ======================================================================== [ 473.293420 ] run fstests generic/300 [ 475.296983 ] JBD2: Ignoring recovery information on journal [ 475.302473 ] ocfs2: Mounting device (253,1) on (node local, slot 0) with ordered data mode. [ 494.290998 ] OCFS2: ERROR (device dm-1): ocfs2_change_extent_flag: Owner 5668 has an extent at cpos 78723 which can no longer be found [ 494.291609 ] On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. [ 494.292018 ] OCFS2: File system is now read-only. [ 494.292224 ] (kworker/19:11,2628,19):ocfs2_mark_extent_written:5272 ERROR: status = -30 [ 494.292602 ] (kworker/19:11,2628,19):ocfs2_dio_end_io_write:2374 ERROR: status = -3 fio: io_u error on file /mnt/scratch/racer: Read-only file system: write offset=460849152, buflen=131072 ========================================================================= In __blockdev_direct_IO, ocfs2_dio_wr_get_block is called to add unwritten extents to a list. extents are also inserted into extent tree in ocfs2_write_begin_nolock. Then another thread call fallocate to puch a hole at one of the unwritten extent. The extent at cpos was removed by ocfs2_remove_extent(). At end io worker thread, ocfs2_search_extent_list found there is no such extent at the cpos. T1 T2 T3 inode lock ... insert extents ... inode unlock ocfs2_fallocate __ocfs2_change_file_space inode lock lock ip_alloc_sem ocfs2_remove_inode_range inode ocfs2_remove_btree_range ocfs2_remove_extent ^---remove the extent at cpos 78723 ... unlock ip_alloc_sem inode unlock ocfs2_dio_end_io ocfs2_dio_end_io_write lock ip_alloc_sem ocfs2_mark_extent_written ocfs2_change_extent_flag ocfs2_search_extent_list ^---failed to find extent ... unlock ip_alloc_sem In most filesystems, fallocate is not compatible with racing with AIO+DIO, so fix it by adding to wait for all dio before fallocate/punch_hole like ext4. Link: https://lkml.kernel.org/r/20240408082041.20925-3-glass.su@suse.com Fixes: b25801038da5 ("ocfs2: Support xfs style space reservation ioctls") Signed-off-by: Su Yue <glass.su(a)suse.com> Reviewed-by: Joseph Qi <joseph.qi(a)linux.alibaba.com> Cc: Changwei Ge <gechangwei(a)live.cn> Cc: Gang He <ghe(a)suse.com> Cc: Joel Becker <jlbec(a)evilplan.org> Cc: Jun Piao <piaojun(a)huawei.com> Cc: Junxiao Bi <junxiao.bi(a)oracle.com> Cc: Mark Fasheh <mark(a)fasheh.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Ye Bin <yebin10(a)huawei.com> --- fs/ocfs2/file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index c45596c25c66..f861b8c345e8 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1934,6 +1934,8 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode, inode_lock(inode); + /* Wait all existing dio workers, newcomers will block on i_rwsem */ + inode_dio_wait(inode); /* * This prevents concurrent writes on other nodes */ -- 2.31.1

2 1

[PATCH openEuler-22.03-LTS-SP1] ocfs2: fix races between hole punching and AIO+DIO
by Ye Bin 15 Jul '24

15 Jul '24

From: Su Yue <glass.su(a)suse.com> mainline inclusion from mainline-v6.10-rc1 commit 952b023f06a24b2ad6ba67304c4c84d45bea2f18 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAD0L1 CVE: CVE-2024-40943 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… --------------------------- After commit "ocfs2: return real error code in ocfs2_dio_wr_get_block", fstests/generic/300 become from always failed to sometimes failed: ======================================================================== [ 473.293420 ] run fstests generic/300 [ 475.296983 ] JBD2: Ignoring recovery information on journal [ 475.302473 ] ocfs2: Mounting device (253,1) on (node local, slot 0) with ordered data mode. [ 494.290998 ] OCFS2: ERROR (device dm-1): ocfs2_change_extent_flag: Owner 5668 has an extent at cpos 78723 which can no longer be found [ 494.291609 ] On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. [ 494.292018 ] OCFS2: File system is now read-only. [ 494.292224 ] (kworker/19:11,2628,19):ocfs2_mark_extent_written:5272 ERROR: status = -30 [ 494.292602 ] (kworker/19:11,2628,19):ocfs2_dio_end_io_write:2374 ERROR: status = -3 fio: io_u error on file /mnt/scratch/racer: Read-only file system: write offset=460849152, buflen=131072 ========================================================================= In __blockdev_direct_IO, ocfs2_dio_wr_get_block is called to add unwritten extents to a list. extents are also inserted into extent tree in ocfs2_write_begin_nolock. Then another thread call fallocate to puch a hole at one of the unwritten extent. The extent at cpos was removed by ocfs2_remove_extent(). At end io worker thread, ocfs2_search_extent_list found there is no such extent at the cpos. T1 T2 T3 inode lock ... insert extents ... inode unlock ocfs2_fallocate __ocfs2_change_file_space inode lock lock ip_alloc_sem ocfs2_remove_inode_range inode ocfs2_remove_btree_range ocfs2_remove_extent ^---remove the extent at cpos 78723 ... unlock ip_alloc_sem inode unlock ocfs2_dio_end_io ocfs2_dio_end_io_write lock ip_alloc_sem ocfs2_mark_extent_written ocfs2_change_extent_flag ocfs2_search_extent_list ^---failed to find extent ... unlock ip_alloc_sem In most filesystems, fallocate is not compatible with racing with AIO+DIO, so fix it by adding to wait for all dio before fallocate/punch_hole like ext4. Link: https://lkml.kernel.org/r/20240408082041.20925-3-glass.su@suse.com Fixes: b25801038da5 ("ocfs2: Support xfs style space reservation ioctls") Signed-off-by: Su Yue <glass.su(a)suse.com> Reviewed-by: Joseph Qi <joseph.qi(a)linux.alibaba.com> Cc: Changwei Ge <gechangwei(a)live.cn> Cc: Gang He <ghe(a)suse.com> Cc: Joel Becker <jlbec(a)evilplan.org> Cc: Jun Piao <piaojun(a)huawei.com> Cc: Junxiao Bi <junxiao.bi(a)oracle.com> Cc: Mark Fasheh <mark(a)fasheh.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Ye Bin <yebin10(a)huawei.com> --- fs/ocfs2/file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 1470b49adb2d..ffa258da6bac 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1940,6 +1940,8 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode, inode_lock(inode); + /* Wait all existing dio workers, newcomers will block on i_rwsem */ + inode_dio_wait(inode); /* * This prevents concurrent writes on other nodes */ -- 2.31.1

2 1

[PATCH OLK-5.10] ocfs2: fix races between hole punching and AIO+DIO
by Ye Bin 15 Jul '24

15 Jul '24

From: Su Yue <glass.su(a)suse.com> mainline inclusion from mainline-v6.10-rc1 commit 952b023f06a24b2ad6ba67304c4c84d45bea2f18 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAD0L1 CVE: CVE-2024-40943 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… --------------------------- After commit "ocfs2: return real error code in ocfs2_dio_wr_get_block", fstests/generic/300 become from always failed to sometimes failed: ======================================================================== [ 473.293420 ] run fstests generic/300 [ 475.296983 ] JBD2: Ignoring recovery information on journal [ 475.302473 ] ocfs2: Mounting device (253,1) on (node local, slot 0) with ordered data mode. [ 494.290998 ] OCFS2: ERROR (device dm-1): ocfs2_change_extent_flag: Owner 5668 has an extent at cpos 78723 which can no longer be found [ 494.291609 ] On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. [ 494.292018 ] OCFS2: File system is now read-only. [ 494.292224 ] (kworker/19:11,2628,19):ocfs2_mark_extent_written:5272 ERROR: status = -30 [ 494.292602 ] (kworker/19:11,2628,19):ocfs2_dio_end_io_write:2374 ERROR: status = -3 fio: io_u error on file /mnt/scratch/racer: Read-only file system: write offset=460849152, buflen=131072 ========================================================================= In __blockdev_direct_IO, ocfs2_dio_wr_get_block is called to add unwritten extents to a list. extents are also inserted into extent tree in ocfs2_write_begin_nolock. Then another thread call fallocate to puch a hole at one of the unwritten extent. The extent at cpos was removed by ocfs2_remove_extent(). At end io worker thread, ocfs2_search_extent_list found there is no such extent at the cpos. T1 T2 T3 inode lock ... insert extents ... inode unlock ocfs2_fallocate __ocfs2_change_file_space inode lock lock ip_alloc_sem ocfs2_remove_inode_range inode ocfs2_remove_btree_range ocfs2_remove_extent ^---remove the extent at cpos 78723 ... unlock ip_alloc_sem inode unlock ocfs2_dio_end_io ocfs2_dio_end_io_write lock ip_alloc_sem ocfs2_mark_extent_written ocfs2_change_extent_flag ocfs2_search_extent_list ^---failed to find extent ... unlock ip_alloc_sem In most filesystems, fallocate is not compatible with racing with AIO+DIO, so fix it by adding to wait for all dio before fallocate/punch_hole like ext4. Link: https://lkml.kernel.org/r/20240408082041.20925-3-glass.su@suse.com Fixes: b25801038da5 ("ocfs2: Support xfs style space reservation ioctls") Signed-off-by: Su Yue <glass.su(a)suse.com> Reviewed-by: Joseph Qi <joseph.qi(a)linux.alibaba.com> Cc: Changwei Ge <gechangwei(a)live.cn> Cc: Gang He <ghe(a)suse.com> Cc: Joel Becker <jlbec(a)evilplan.org> Cc: Jun Piao <piaojun(a)huawei.com> Cc: Junxiao Bi <junxiao.bi(a)oracle.com> Cc: Mark Fasheh <mark(a)fasheh.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Ye Bin <yebin10(a)huawei.com> --- fs/ocfs2/file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 318b73d791d5..ec0e67e9a3ec 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1940,6 +1940,8 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode, inode_lock(inode); + /* Wait all existing dio workers, newcomers will block on i_rwsem */ + inode_dio_wait(inode); /* * This prevents concurrent writes on other nodes */ -- 2.31.1

2 1

[PATCH openEuler-1.0-LTS] ocfs2: fix races between hole punching and AIO+DIO
by Ye Bin 15 Jul '24

15 Jul '24

From: Su Yue <glass.su(a)suse.com> mainline inclusion from mainline-v6.10-rc1 commit 952b023f06a24b2ad6ba67304c4c84d45bea2f18 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAD0L1 CVE: CVE-2024-40943 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… --------------------------- After commit "ocfs2: return real error code in ocfs2_dio_wr_get_block", fstests/generic/300 become from always failed to sometimes failed: ======================================================================== [ 473.293420 ] run fstests generic/300 [ 475.296983 ] JBD2: Ignoring recovery information on journal [ 475.302473 ] ocfs2: Mounting device (253,1) on (node local, slot 0) with ordered data mode. [ 494.290998 ] OCFS2: ERROR (device dm-1): ocfs2_change_extent_flag: Owner 5668 has an extent at cpos 78723 which can no longer be found [ 494.291609 ] On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. [ 494.292018 ] OCFS2: File system is now read-only. [ 494.292224 ] (kworker/19:11,2628,19):ocfs2_mark_extent_written:5272 ERROR: status = -30 [ 494.292602 ] (kworker/19:11,2628,19):ocfs2_dio_end_io_write:2374 ERROR: status = -3 fio: io_u error on file /mnt/scratch/racer: Read-only file system: write offset=460849152, buflen=131072 ========================================================================= In __blockdev_direct_IO, ocfs2_dio_wr_get_block is called to add unwritten extents to a list. extents are also inserted into extent tree in ocfs2_write_begin_nolock. Then another thread call fallocate to puch a hole at one of the unwritten extent. The extent at cpos was removed by ocfs2_remove_extent(). At end io worker thread, ocfs2_search_extent_list found there is no such extent at the cpos. T1 T2 T3 inode lock ... insert extents ... inode unlock ocfs2_fallocate __ocfs2_change_file_space inode lock lock ip_alloc_sem ocfs2_remove_inode_range inode ocfs2_remove_btree_range ocfs2_remove_extent ^---remove the extent at cpos 78723 ... unlock ip_alloc_sem inode unlock ocfs2_dio_end_io ocfs2_dio_end_io_write lock ip_alloc_sem ocfs2_mark_extent_written ocfs2_change_extent_flag ocfs2_search_extent_list ^---failed to find extent ... unlock ip_alloc_sem In most filesystems, fallocate is not compatible with racing with AIO+DIO, so fix it by adding to wait for all dio before fallocate/punch_hole like ext4. Link: https://lkml.kernel.org/r/20240408082041.20925-3-glass.su@suse.com Fixes: b25801038da5 ("ocfs2: Support xfs style space reservation ioctls") Signed-off-by: Su Yue <glass.su(a)suse.com> Reviewed-by: Joseph Qi <joseph.qi(a)linux.alibaba.com> Cc: Changwei Ge <gechangwei(a)live.cn> Cc: Gang He <ghe(a)suse.com> Cc: Joel Becker <jlbec(a)evilplan.org> Cc: Jun Piao <piaojun(a)huawei.com> Cc: Junxiao Bi <junxiao.bi(a)oracle.com> Cc: Mark Fasheh <mark(a)fasheh.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Ye Bin <yebin10(a)huawei.com> --- fs/ocfs2/file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index fd49fd2ad86f..8c0e300f0463 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1940,6 +1940,8 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode, inode_lock(inode); + /* Wait all existing dio workers, newcomers will block on i_rwsem */ + inode_dio_wait(inode); /* * This prevents concurrent writes on other nodes */ -- 2.31.1

2 1

[PATCH OLK-5.10] drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
by Zeng Heng 15 Jul '24

15 Jul '24

From: Anand K Mistry <amistry(a)google.com> mainline inclusion from mainline-v5.16-rc1 commit 8244a3bc27b3efd057da154b8d7e414670d5044f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNEV CVE: CVE-2021-47200 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… ---------------------------------- drm_gem_ttm_mmap() drops a reference to the gem object on success. If the gem object's refcount == 1 on entry to drm_gem_prime_mmap(), that drop will free the gem object, and the subsequent drm_gem_object_get() will be a UAF. Fix by grabbing a reference before calling the mmap helper. This issue was forseen when the reference dropping was adding in commit 9786b65bc61ac ("drm/ttm: fix mmap refcounting"): "For that to work properly the drm_gem_object_get() call in drm_gem_ttm_mmap() must be moved so it happens before calling obj->funcs->mmap(), otherwise the gem refcount would go down to zero." Signed-off-by: Anand K Mistry <amistry(a)google.com> Fixes: 9786b65bc61a ("drm/ttm: fix mmap refcounting") Cc: Gerd Hoffmann <kraxel(a)redhat.com> Cc: Daniel Vetter <daniel.vetter(a)ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> Cc: Maxime Ripard <mripard(a)kernel.org> Cc: Thomas Zimmermann <tzimmermann(a)suse.de> Cc: David Airlie <airlied(a)linux.ie> Cc: Daniel Vetter <daniel(a)ffwll.ch> Cc: dri-devel(a)lists.freedesktop.org Cc: <stable(a)vger.kernel.org> # v5.5+ Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210930085932.1.I8043d61cc23… Conflicts: drivers/gpu/drm/drm_prime.c [Resolve conflicts due to several refactor patches not merged.] Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/gpu/drm/drm_prime.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 825499ea3ff5..893421d81e1e 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -724,11 +724,13 @@ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) vma->vm_pgoff += drm_vma_node_start(&obj->vma_node); if (obj->funcs && obj->funcs->mmap) { + drm_gem_object_get(obj); ret = obj->funcs->mmap(obj, vma); - if (ret) + if (ret) { + drm_gem_object_put(obj); return ret; + } vma->vm_private_data = obj; - drm_gem_object_get(obj); return 0; } -- 2.25.1

2 1

[PATCH openEuler-22.03-LTS-SP1] drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
by Zeng Heng 15 Jul '24

15 Jul '24

From: Anand K Mistry <amistry(a)google.com> mainline inclusion from mainline-v5.16-rc1 commit 8244a3bc27b3efd057da154b8d7e414670d5044f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNEV CVE: CVE-2021-47200 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… ---------------------------------- drm_gem_ttm_mmap() drops a reference to the gem object on success. If the gem object's refcount == 1 on entry to drm_gem_prime_mmap(), that drop will free the gem object, and the subsequent drm_gem_object_get() will be a UAF. Fix by grabbing a reference before calling the mmap helper. This issue was forseen when the reference dropping was adding in commit 9786b65bc61ac ("drm/ttm: fix mmap refcounting"): "For that to work properly the drm_gem_object_get() call in drm_gem_ttm_mmap() must be moved so it happens before calling obj->funcs->mmap(), otherwise the gem refcount would go down to zero." Signed-off-by: Anand K Mistry <amistry(a)google.com> Fixes: 9786b65bc61a ("drm/ttm: fix mmap refcounting") Cc: Gerd Hoffmann <kraxel(a)redhat.com> Cc: Daniel Vetter <daniel.vetter(a)ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> Cc: Maxime Ripard <mripard(a)kernel.org> Cc: Thomas Zimmermann <tzimmermann(a)suse.de> Cc: David Airlie <airlied(a)linux.ie> Cc: Daniel Vetter <daniel(a)ffwll.ch> Cc: dri-devel(a)lists.freedesktop.org Cc: <stable(a)vger.kernel.org> # v5.5+ Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210930085932.1.I8043d61cc23… Conflicts: drivers/gpu/drm/drm_prime.c [Resolve conflicts due to several refactor patches not merged.] Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/gpu/drm/drm_prime.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 825499ea3ff5..893421d81e1e 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -724,11 +724,13 @@ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) vma->vm_pgoff += drm_vma_node_start(&obj->vma_node); if (obj->funcs && obj->funcs->mmap) { + drm_gem_object_get(obj); ret = obj->funcs->mmap(obj, vma); - if (ret) + if (ret) { + drm_gem_object_put(obj); return ret; + } vma->vm_private_data = obj; - drm_gem_object_get(obj); return 0; } -- 2.25.1

2 1

[PATCH openEuler-22.03-LTS-SP1] drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
by Zeng Heng 15 Jul '24

15 Jul '24

From: Anand K Mistry <amistry(a)google.com> mainline inclusion from mainline-v5.16-rc1 commit 8244a3bc27b3efd057da154b8d7e414670d5044f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNEV CVE: CVE-2021-47200 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… ---------------------------------- drm_gem_ttm_mmap() drops a reference to the gem object on success. If the gem object's refcount == 1 on entry to drm_gem_prime_mmap(), that drop will free the gem object, and the subsequent drm_gem_object_get() will be a UAF. Fix by grabbing a reference before calling the mmap helper. This issue was forseen when the reference dropping was adding in commit 9786b65bc61ac ("drm/ttm: fix mmap refcounting"): "For that to work properly the drm_gem_object_get() call in drm_gem_ttm_mmap() must be moved so it happens before calling obj->funcs->mmap(), otherwise the gem refcount would go down to zero." Signed-off-by: Anand K Mistry <amistry(a)google.com> Fixes: 9786b65bc61a ("drm/ttm: fix mmap refcounting") Cc: Gerd Hoffmann <kraxel(a)redhat.com> Cc: Daniel Vetter <daniel.vetter(a)ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> Cc: Maxime Ripard <mripard(a)kernel.org> Cc: Thomas Zimmermann <tzimmermann(a)suse.de> Cc: David Airlie <airlied(a)linux.ie> Cc: Daniel Vetter <daniel(a)ffwll.ch> Cc: dri-devel(a)lists.freedesktop.org Cc: <stable(a)vger.kernel.org> # v5.5+ Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210930085932.1.I8043d61cc23… Conflicts: drivers/gpu/drm/drm_prime.c [Resolve conflicts due to several refactor patches not merged.] Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/gpu/drm/drm_prime.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 825499ea3ff5..c806cf4c9a48 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -724,11 +724,14 @@ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) vma->vm_pgoff += drm_vma_node_start(&obj->vma_node); if (obj->funcs && obj->funcs->mmap) { + + drm_gem_object_get(obj); ret = obj->funcs->mmap(obj, vma); - if (ret) + if (ret) { + drm_gem_object_put(obj); return ret; + } vma->vm_private_data = obj; - drm_gem_object_get(obj); return 0; } -- 2.25.1

2 1

[PATCH OLK-5.10] drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
by Zeng Heng 15 Jul '24

15 Jul '24

From: Anand K Mistry <amistry(a)google.com> mainline inclusion from mainline-v5.16-rc1 commit 8244a3bc27b3efd057da154b8d7e414670d5044f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNEV CVE: CVE-2021-47200 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… ---------------------------------- drm_gem_ttm_mmap() drops a reference to the gem object on success. If the gem object's refcount == 1 on entry to drm_gem_prime_mmap(), that drop will free the gem object, and the subsequent drm_gem_object_get() will be a UAF. Fix by grabbing a reference before calling the mmap helper. This issue was forseen when the reference dropping was adding in commit 9786b65bc61ac ("drm/ttm: fix mmap refcounting"): "For that to work properly the drm_gem_object_get() call in drm_gem_ttm_mmap() must be moved so it happens before calling obj->funcs->mmap(), otherwise the gem refcount would go down to zero." Signed-off-by: Anand K Mistry <amistry(a)google.com> Fixes: 9786b65bc61a ("drm/ttm: fix mmap refcounting") Cc: Gerd Hoffmann <kraxel(a)redhat.com> Cc: Daniel Vetter <daniel.vetter(a)ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> Cc: Maxime Ripard <mripard(a)kernel.org> Cc: Thomas Zimmermann <tzimmermann(a)suse.de> Cc: David Airlie <airlied(a)linux.ie> Cc: Daniel Vetter <daniel(a)ffwll.ch> Cc: dri-devel(a)lists.freedesktop.org Cc: <stable(a)vger.kernel.org> # v5.5+ Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210930085932.1.I8043d61cc23… Conflicts: drivers/gpu/drm/drm_prime.c [Resolve conflicts due to several refactor patches not merged.] Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/gpu/drm/drm_prime.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 825499ea3ff5..c806cf4c9a48 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -724,11 +724,14 @@ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) vma->vm_pgoff += drm_vma_node_start(&obj->vma_node); if (obj->funcs && obj->funcs->mmap) { + + drm_gem_object_get(obj); ret = obj->funcs->mmap(obj, vma); - if (ret) + if (ret) { + drm_gem_object_put(obj); return ret; + } vma->vm_private_data = obj; - drm_gem_object_get(obj); return 0; } -- 2.25.1

2 1

[PATCH OLK-5.10] drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
by Zeng Heng 15 Jul '24

15 Jul '24

From: Anand K Mistry <amistry(a)google.com> mainline inclusion from mainline-v5.16-rc1 commit 8244a3bc27b3efd057da154b8d7e414670d5044f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNEV CVE: CVE-2021-47200 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… ---------------------------------- drm_gem_ttm_mmap() drops a reference to the gem object on success. If the gem object's refcount == 1 on entry to drm_gem_prime_mmap(), that drop will free the gem object, and the subsequent drm_gem_object_get() will be a UAF. Fix by grabbing a reference before calling the mmap helper. This issue was forseen when the reference dropping was adding in commit 9786b65bc61ac ("drm/ttm: fix mmap refcounting"): "For that to work properly the drm_gem_object_get() call in drm_gem_ttm_mmap() must be moved so it happens before calling obj->funcs->mmap(), otherwise the gem refcount would go down to zero." Signed-off-by: Anand K Mistry <amistry(a)google.com> Fixes: 9786b65bc61a ("drm/ttm: fix mmap refcounting") Cc: Gerd Hoffmann <kraxel(a)redhat.com> Cc: Daniel Vetter <daniel.vetter(a)ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> Cc: Maxime Ripard <mripard(a)kernel.org> Cc: Thomas Zimmermann <tzimmermann(a)suse.de> Cc: David Airlie <airlied(a)linux.ie> Cc: Daniel Vetter <daniel(a)ffwll.ch> Cc: dri-devel(a)lists.freedesktop.org Cc: <stable(a)vger.kernel.org> # v5.5+ Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210930085932.1.I8043d61cc23… Conflicts: drivers/gpu/drm/drm_prime.c [Resolve conflicts due to several refactor patches not merged.] Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/gpu/drm/drm_prime.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 825499ea3ff5..c806cf4c9a48 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -724,11 +724,14 @@ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) vma->vm_pgoff += drm_vma_node_start(&obj->vma_node); if (obj->funcs && obj->funcs->mmap) { + + drm_gem_object_get(obj); ret = obj->funcs->mmap(obj, vma); - if (ret) + if (ret) { + drm_gem_object_put(obj); return ret; + } vma->vm_private_data = obj; - drm_gem_object_get(obj); return 0; } -- 2.25.1

2 1

[PATCH openEuler-22.03-LTS-SP1] drm/prime: Fix use after free in mmap with drm_gem_ttm_mmap
by Zeng Heng 15 Jul '24

15 Jul '24

From: Anand K Mistry <amistry(a)google.com> mainline inclusion from mainline-v5.16-rc1 commit 8244a3bc27b3efd057da154b8d7e414670d5044f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNEV CVE: CVE-2021-47200 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… ---------------------------------- drm_gem_ttm_mmap() drops a reference to the gem object on success. If the gem object's refcount == 1 on entry to drm_gem_prime_mmap(), that drop will free the gem object, and the subsequent drm_gem_object_get() will be a UAF. Fix by grabbing a reference before calling the mmap helper. This issue was forseen when the reference dropping was adding in commit 9786b65bc61ac ("drm/ttm: fix mmap refcounting"): "For that to work properly the drm_gem_object_get() call in drm_gem_ttm_mmap() must be moved so it happens before calling obj->funcs->mmap(), otherwise the gem refcount would go down to zero." Signed-off-by: Anand K Mistry <amistry(a)google.com> Fixes: 9786b65bc61a ("drm/ttm: fix mmap refcounting") Cc: Gerd Hoffmann <kraxel(a)redhat.com> Cc: Daniel Vetter <daniel.vetter(a)ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> Cc: Maxime Ripard <mripard(a)kernel.org> Cc: Thomas Zimmermann <tzimmermann(a)suse.de> Cc: David Airlie <airlied(a)linux.ie> Cc: Daniel Vetter <daniel(a)ffwll.ch> Cc: dri-devel(a)lists.freedesktop.org Cc: <stable(a)vger.kernel.org> # v5.5+ Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210930085932.1.I8043d61cc23… Conflicts: drivers/gpu/drm/drm_prime.c [Resolve conflicts due to several refactor patches not merged.] Signed-off-by: Zeng Heng <zengheng4(a)huawei.com> --- drivers/gpu/drm/drm_prime.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 825499ea3ff5..c806cf4c9a48 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -724,11 +724,14 @@ int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) vma->vm_pgoff += drm_vma_node_start(&obj->vma_node); if (obj->funcs && obj->funcs->mmap) { + + drm_gem_object_get(obj); ret = obj->funcs->mmap(obj, vma); - if (ret) + if (ret) { + drm_gem_object_put(obj); return ret; + } vma->vm_private_data = obj; - drm_gem_object_get(obj); return 0; } -- 2.25.1

2 1

[PATCH openEuler-22.03-LTS-SP1] powerpc/pseries: Enforce hcall result buffer validity and size
by Huang Xiaojia 15 Jul '24

15 Jul '24

From: Nathan Lynch <nathanl(a)linux.ibm.com> stable inclusion from stable-v4.19.317 commit acf2b80c31c37acab040baa3cf5f19fbd5140b18 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACRHB CVE: CVE-2024-40974 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ff2e185cf73df480ec69675936c4ee75a445c3e4 ] plpar_hcall(), plpar_hcall9(), and related functions expect callers to provide valid result buffers of certain minimum size. Currently this is communicated only through comments in the code and the compiler has no idea. For example, if I write a bug like this: long retbuf[PLPAR_HCALL_BUFSIZE]; // should be PLPAR_HCALL9_BUFSIZE plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, ...); This compiles with no diagnostics emitted, but likely results in stack corruption at runtime when plpar_hcall9() stores results past the end of the array. (To be clear this is a contrived example and I have not found a real instance yet.) To make this class of error less likely, we can use explicitly-sized array parameters instead of pointers in the declarations for the hcall APIs. When compiled with -Warray-bounds[1], the code above now provokes a diagnostic like this: error: array argument is too small; is of size 32, callee requires at least 72 [-Werror,-Warray-bounds] 60 | plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, | ^ ~~~~~~ [1] Enabled for LLVM builds but not GCC for now. See commit 0da6e5fd6c37 ("gcc: disable '-Warray-bounds' for gcc-13 too") and related changes. Signed-off-by: Nathan Lynch <nathanl(a)linux.ibm.com> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Link: https://msgid.link/20240408-pseries-hvcall-retbuf-v1-1-ebc73d7253cf@linux.i… Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Huang Xiaojia <huangxiaojia2(a)huawei.com> --- arch/powerpc/include/asm/hvcall.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index 00c8cda1c9c3..a8035af4fc50 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -453,7 +453,7 @@ long plpar_hcall_norets_notrace(unsigned long opcode, ...); * Used for all but the craziest of phyp interfaces (see plpar_hcall9) */ #define PLPAR_HCALL_BUFSIZE 4 -long plpar_hcall(unsigned long opcode, unsigned long *retbuf, ...); +long plpar_hcall(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL_BUFSIZE], ...); /** * plpar_hcall_raw: - Make a hypervisor call without calculating hcall stats @@ -467,7 +467,7 @@ long plpar_hcall(unsigned long opcode, unsigned long *retbuf, ...); * plpar_hcall, but plpar_hcall_raw works in real mode and does not * calculate hypervisor call statistics. */ -long plpar_hcall_raw(unsigned long opcode, unsigned long *retbuf, ...); +long plpar_hcall_raw(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL_BUFSIZE], ...); /** * plpar_hcall9: - Make a pseries hypervisor call with up to 9 return arguments @@ -478,8 +478,8 @@ long plpar_hcall_raw(unsigned long opcode, unsigned long *retbuf, ...); * PLPAR_HCALL9_BUFSIZE to size the return argument buffer. */ #define PLPAR_HCALL9_BUFSIZE 9 -long plpar_hcall9(unsigned long opcode, unsigned long *retbuf, ...); -long plpar_hcall9_raw(unsigned long opcode, unsigned long *retbuf, ...); +long plpar_hcall9(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL9_BUFSIZE], ...); +long plpar_hcall9_raw(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL9_BUFSIZE], ...); struct hvcall_mpp_data { unsigned long entitled_mem; -- 2.34.1

2 1

[PATCH openEuler-1.0-LTS] powerpc/pseries: Enforce hcall result buffer validity and size
by Huang Xiaojia 15 Jul '24

15 Jul '24

From: Nathan Lynch <nathanl(a)linux.ibm.com> stable inclusion from stable-v4.19.317 commit acf2b80c31c37acab040baa3cf5f19fbd5140b18 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IACRHB CVE: CVE-2024-40974 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ff2e185cf73df480ec69675936c4ee75a445c3e4 ] plpar_hcall(), plpar_hcall9(), and related functions expect callers to provide valid result buffers of certain minimum size. Currently this is communicated only through comments in the code and the compiler has no idea. For example, if I write a bug like this: long retbuf[PLPAR_HCALL_BUFSIZE]; // should be PLPAR_HCALL9_BUFSIZE plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, ...); This compiles with no diagnostics emitted, but likely results in stack corruption at runtime when plpar_hcall9() stores results past the end of the array. (To be clear this is a contrived example and I have not found a real instance yet.) To make this class of error less likely, we can use explicitly-sized array parameters instead of pointers in the declarations for the hcall APIs. When compiled with -Warray-bounds[1], the code above now provokes a diagnostic like this: error: array argument is too small; is of size 32, callee requires at least 72 [-Werror,-Warray-bounds] 60 | plpar_hcall9(H_ALLOCATE_VAS_WINDOW, retbuf, | ^ ~~~~~~ [1] Enabled for LLVM builds but not GCC for now. See commit 0da6e5fd6c37 ("gcc: disable '-Warray-bounds' for gcc-13 too") and related changes. Signed-off-by: Nathan Lynch <nathanl(a)linux.ibm.com> Signed-off-by: Michael Ellerman <mpe(a)ellerman.id.au> Link: https://msgid.link/20240408-pseries-hvcall-retbuf-v1-1-ebc73d7253cf@linux.i… Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Huang Xiaojia <huangxiaojia2(a)huawei.com> --- arch/powerpc/include/asm/hvcall.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index a0b17f9f1ea4..8347f57e1c6a 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -383,7 +383,7 @@ long plpar_hcall_norets(unsigned long opcode, ...); * Used for all but the craziest of phyp interfaces (see plpar_hcall9) */ #define PLPAR_HCALL_BUFSIZE 4 -long plpar_hcall(unsigned long opcode, unsigned long *retbuf, ...); +long plpar_hcall(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL_BUFSIZE], ...); /** * plpar_hcall_raw: - Make a hypervisor call without calculating hcall stats @@ -397,7 +397,7 @@ long plpar_hcall(unsigned long opcode, unsigned long *retbuf, ...); * plpar_hcall, but plpar_hcall_raw works in real mode and does not * calculate hypervisor call statistics. */ -long plpar_hcall_raw(unsigned long opcode, unsigned long *retbuf, ...); +long plpar_hcall_raw(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL_BUFSIZE], ...); /** * plpar_hcall9: - Make a pseries hypervisor call with up to 9 return arguments @@ -408,8 +408,8 @@ long plpar_hcall_raw(unsigned long opcode, unsigned long *retbuf, ...); * PLPAR_HCALL9_BUFSIZE to size the return argument buffer. */ #define PLPAR_HCALL9_BUFSIZE 9 -long plpar_hcall9(unsigned long opcode, unsigned long *retbuf, ...); -long plpar_hcall9_raw(unsigned long opcode, unsigned long *retbuf, ...); +long plpar_hcall9(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL9_BUFSIZE], ...); +long plpar_hcall9_raw(unsigned long opcode, unsigned long retbuf[static PLPAR_HCALL9_BUFSIZE], ...); struct hvcall_mpp_data { unsigned long entitled_mem; -- 2.34.1

2 1

[PATCH openEuler-22.03-LTS-SP1 0/1] powerpc/pseries: Enforce hcall result buffer validity and size
by Huang Xiaojia 15 Jul '24

15 Jul '24

*** BLURB HERE *** Nathan Lynch (1): powerpc/pseries: Enforce hcall result buffer validity and size arch/powerpc/include/asm/hvcall.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) -- 2.34.1

2 2

[PATCH OLK-6.6 0/1] powerpc/pseries: Enforce hcall result buffer validity and size
by Huang Xiaojia 15 Jul '24

15 Jul '24

*** BLURB HERE *** Nathan Lynch (1): powerpc/pseries: Enforce hcall result buffer validity and size arch/powerpc/include/asm/hvcall.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) -- 2.34.1

2 2

[PATCH OLK-6.6] arm64: asm-bug: Add .align 2 to the end of __BUG_ENTRY
by Li Zetao 15 Jul '24

15 Jul '24

From: Jiangfeng Xiao <xiaojiangfeng(a)huawei.com> stable inclusion from stable-v6.6.33 commit 9f2ad88f9b349554f64e4037ec185c84d7dd9c7d category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAC3N3 CVE: CVE-2024-39488 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ffbf4fb9b5c12ff878a10ea17997147ea4ebea6f ] When CONFIG_DEBUG_BUGVERBOSE=n, we fail to add necessary padding bytes to bug_table entries, and as a result the last entry in a bug table will be ignored, potentially leading to an unexpected panic(). All prior entries in the table will be handled correctly. The arm64 ABI requires that struct fields of up to 8 bytes are naturally-aligned, with padding added within a struct such that struct are suitably aligned within arrays. When CONFIG_DEBUG_BUGVERPOSE=y, the layout of a bug_entry is: struct bug_entry { signed int bug_addr_disp; // 4 bytes signed int file_disp; // 4 bytes unsigned short line; // 2 bytes unsigned short flags; // 2 bytes } ... with 12 bytes total, requiring 4-byte alignment. When CONFIG_DEBUG_BUGVERBOSE=n, the layout of a bug_entry is: struct bug_entry { signed int bug_addr_disp; // 4 bytes unsigned short flags; // 2 bytes < implicit padding > // 2 bytes } ... with 8 bytes total, with 6 bytes of data and 2 bytes of trailing padding, requiring 4-byte alginment. When we create a bug_entry in assembly, we align the start of the entry to 4 bytes, which implicitly handles padding for any prior entries. However, we do not align the end of the entry, and so when CONFIG_DEBUG_BUGVERBOSE=n, the final entry lacks the trailing padding bytes. For the main kernel image this is not a problem as find_bug() doesn't depend on the trailing padding bytes when searching for entries: for (bug = __start___bug_table; bug < __stop___bug_table; ++bug) if (bugaddr == bug_addr(bug)) return bug; However for modules, module_bug_finalize() depends on the trailing bytes when calculating the number of entries: mod->num_bugs = sechdrs[i].sh_size / sizeof(struct bug_entry); ... and as the last bug_entry lacks the necessary padding bytes, this entry will not be counted, e.g. in the case of a single entry: sechdrs[i].sh_size == 6 sizeof(struct bug_entry) == 8; sechdrs[i].sh_size / sizeof(struct bug_entry) == 0; Consequently module_find_bug() will miss the last bug_entry when it does: for (i = 0; i < mod->num_bugs; ++i, ++bug) if (bugaddr == bug_addr(bug)) goto out; ... which can lead to a kenrel panic due to an unhandled bug. This can be demonstrated with the following module: static int __init buginit(void) { WARN(1, "hello\n"); return 0; } static void __exit bugexit(void) { } module_init(buginit); module_exit(bugexit); MODULE_LICENSE("GPL"); ... which will trigger a kernel panic when loaded: ------------[ cut here ]------------ hello Unexpected kernel BRK exception at EL1 Internal error: BRK handler: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: hello(O+) CPU: 0 PID: 50 Comm: insmod Tainted: G O 6.9.1 #8 Hardware name: linux,dummy-virt (DT) pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : buginit+0x18/0x1000 [hello] lr : buginit+0x18/0x1000 [hello] sp : ffff800080533ae0 x29: ffff800080533ae0 x28: 0000000000000000 x27: 0000000000000000 x26: ffffaba8c4e70510 x25: ffff800080533c30 x24: ffffaba8c4a28a58 x23: 0000000000000000 x22: 0000000000000000 x21: ffff3947c0eab3c0 x20: ffffaba8c4e3f000 x19: ffffaba846464000 x18: 0000000000000006 x17: 0000000000000000 x16: ffffaba8c2492834 x15: 0720072007200720 x14: 0720072007200720 x13: ffffaba8c49b27c8 x12: 0000000000000312 x11: 0000000000000106 x10: ffffaba8c4a0a7c8 x9 : ffffaba8c49b27c8 x8 : 00000000ffffefff x7 : ffffaba8c4a0a7c8 x6 : 80000000fffff000 x5 : 0000000000000107 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff3947c0eab3c0 Call trace: buginit+0x18/0x1000 [hello] do_one_initcall+0x80/0x1c8 do_init_module+0x60/0x218 load_module+0x1ba4/0x1d70 __do_sys_init_module+0x198/0x1d0 __arm64_sys_init_module+0x1c/0x28 invoke_syscall+0x48/0x114 el0_svc_common.constprop.0+0x40/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x34/0xd8 el0t_64_sync_handler+0x120/0x12c el0t_64_sync+0x190/0x194 Code: d0ffffe0 910003fd 91000000 9400000b (d4210000) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: BRK handler: Fatal exception Fix this by always aligning the end of a bug_entry to 4 bytes, which is correct regardless of CONFIG_DEBUG_BUGVERBOSE. Fixes: 9fb7410f955f ("arm64/BUG: Use BRK instruction for generic BUG traps") Signed-off-by: Yuanbin Xie <xieyuanbin1(a)huawei.com> Signed-off-by: Jiangfeng Xiao <xiaojiangfeng(a)huawei.com> Reviewed-by: Mark Rutland <mark.rutland(a)arm.com> Link: https://lore.kernel.org/r/1716212077-43826-1-git-send-email-xiaojiangfeng@h… Signed-off-by: Will Deacon <will(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Li Zetao <lizetao1(a)huawei.com> --- arch/arm64/include/asm/asm-bug.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/include/asm/asm-bug.h b/arch/arm64/include/asm/asm-bug.h index c762038ba4009..6e73809f6492a 100644 --- a/arch/arm64/include/asm/asm-bug.h +++ b/arch/arm64/include/asm/asm-bug.h @@ -28,6 +28,7 @@ 14470: .long 14471f - .; \ _BUGVERBOSE_LOCATION(__FILE__, __LINE__) \ .short flags; \ + .align 2; \ .popsection; \ 14471: #else -- 2.34.1

2 1

[PATCH OLK-5.10 0/1] powerpc/pseries: Enforce hcall result buffer validity and size
by Huang Xiaojia 15 Jul '24

15 Jul '24

*** BLURB HERE *** Nathan Lynch (1): powerpc/pseries: Enforce hcall result buffer validity and size arch/powerpc/include/asm/hvcall.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) -- 2.34.1

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[PATCH openEuler-22.03-LTS-SP1] arm64: asm-bug: Add .align 2 to the end of __BUG_ENTRY
by Li Zetao 15 Jul '24

15 Jul '24

From: Jiangfeng Xiao <xiaojiangfeng(a)huawei.com> stable inclusion from stable-v5.10.219 commit 461a760d578b2b2c2faac3040b6b7c77baf128f8 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAC3N3 CVE: CVE-2024-39488 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ffbf4fb9b5c12ff878a10ea17997147ea4ebea6f ] When CONFIG_DEBUG_BUGVERBOSE=n, we fail to add necessary padding bytes to bug_table entries, and as a result the last entry in a bug table will be ignored, potentially leading to an unexpected panic(). All prior entries in the table will be handled correctly. The arm64 ABI requires that struct fields of up to 8 bytes are naturally-aligned, with padding added within a struct such that struct are suitably aligned within arrays. When CONFIG_DEBUG_BUGVERPOSE=y, the layout of a bug_entry is: struct bug_entry { signed int bug_addr_disp; // 4 bytes signed int file_disp; // 4 bytes unsigned short line; // 2 bytes unsigned short flags; // 2 bytes } ... with 12 bytes total, requiring 4-byte alignment. When CONFIG_DEBUG_BUGVERBOSE=n, the layout of a bug_entry is: struct bug_entry { signed int bug_addr_disp; // 4 bytes unsigned short flags; // 2 bytes < implicit padding > // 2 bytes } ... with 8 bytes total, with 6 bytes of data and 2 bytes of trailing padding, requiring 4-byte alginment. When we create a bug_entry in assembly, we align the start of the entry to 4 bytes, which implicitly handles padding for any prior entries. However, we do not align the end of the entry, and so when CONFIG_DEBUG_BUGVERBOSE=n, the final entry lacks the trailing padding bytes. For the main kernel image this is not a problem as find_bug() doesn't depend on the trailing padding bytes when searching for entries: for (bug = __start___bug_table; bug < __stop___bug_table; ++bug) if (bugaddr == bug_addr(bug)) return bug; However for modules, module_bug_finalize() depends on the trailing bytes when calculating the number of entries: mod->num_bugs = sechdrs[i].sh_size / sizeof(struct bug_entry); ... and as the last bug_entry lacks the necessary padding bytes, this entry will not be counted, e.g. in the case of a single entry: sechdrs[i].sh_size == 6 sizeof(struct bug_entry) == 8; sechdrs[i].sh_size / sizeof(struct bug_entry) == 0; Consequently module_find_bug() will miss the last bug_entry when it does: for (i = 0; i < mod->num_bugs; ++i, ++bug) if (bugaddr == bug_addr(bug)) goto out; ... which can lead to a kenrel panic due to an unhandled bug. This can be demonstrated with the following module: static int __init buginit(void) { WARN(1, "hello\n"); return 0; } static void __exit bugexit(void) { } module_init(buginit); module_exit(bugexit); MODULE_LICENSE("GPL"); ... which will trigger a kernel panic when loaded: ------------[ cut here ]------------ hello Unexpected kernel BRK exception at EL1 Internal error: BRK handler: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: hello(O+) CPU: 0 PID: 50 Comm: insmod Tainted: G O 6.9.1 #8 Hardware name: linux,dummy-virt (DT) pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : buginit+0x18/0x1000 [hello] lr : buginit+0x18/0x1000 [hello] sp : ffff800080533ae0 x29: ffff800080533ae0 x28: 0000000000000000 x27: 0000000000000000 x26: ffffaba8c4e70510 x25: ffff800080533c30 x24: ffffaba8c4a28a58 x23: 0000000000000000 x22: 0000000000000000 x21: ffff3947c0eab3c0 x20: ffffaba8c4e3f000 x19: ffffaba846464000 x18: 0000000000000006 x17: 0000000000000000 x16: ffffaba8c2492834 x15: 0720072007200720 x14: 0720072007200720 x13: ffffaba8c49b27c8 x12: 0000000000000312 x11: 0000000000000106 x10: ffffaba8c4a0a7c8 x9 : ffffaba8c49b27c8 x8 : 00000000ffffefff x7 : ffffaba8c4a0a7c8 x6 : 80000000fffff000 x5 : 0000000000000107 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff3947c0eab3c0 Call trace: buginit+0x18/0x1000 [hello] do_one_initcall+0x80/0x1c8 do_init_module+0x60/0x218 load_module+0x1ba4/0x1d70 __do_sys_init_module+0x198/0x1d0 __arm64_sys_init_module+0x1c/0x28 invoke_syscall+0x48/0x114 el0_svc_common.constprop.0+0x40/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x34/0xd8 el0t_64_sync_handler+0x120/0x12c el0t_64_sync+0x190/0x194 Code: d0ffffe0 910003fd 91000000 9400000b (d4210000) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: BRK handler: Fatal exception Fix this by always aligning the end of a bug_entry to 4 bytes, which is correct regardless of CONFIG_DEBUG_BUGVERBOSE. Fixes: 9fb7410f955f ("arm64/BUG: Use BRK instruction for generic BUG traps") Signed-off-by: Yuanbin Xie <xieyuanbin1(a)huawei.com> Signed-off-by: Jiangfeng Xiao <xiaojiangfeng(a)huawei.com> Reviewed-by: Mark Rutland <mark.rutland(a)arm.com> Link: https://lore.kernel.org/r/1716212077-43826-1-git-send-email-xiaojiangfeng@h… Signed-off-by: Will Deacon <will(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Li Zetao <lizetao1(a)huawei.com> --- arch/arm64/include/asm/asm-bug.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/include/asm/asm-bug.h b/arch/arm64/include/asm/asm-bug.h index 03f52f84a4f3f..bc2dcc8a00009 100644 --- a/arch/arm64/include/asm/asm-bug.h +++ b/arch/arm64/include/asm/asm-bug.h @@ -28,6 +28,7 @@ 14470: .long 14471f - 14470b; \ _BUGVERBOSE_LOCATION(__FILE__, __LINE__) \ .short flags; \ + .align 2; \ .popsection; \ 14471: #else -- 2.34.1

2 1

[PATCH openEuler-1.0-LTS 0/1] powerpc/pseries: Enforce hcall result buffer validity and size
by Huang Xiaojia 15 Jul '24

15 Jul '24

*** BLURB HERE *** Nathan Lynch (1): powerpc/pseries: Enforce hcall result buffer validity and size arch/powerpc/include/asm/hvcall.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) -- 2.34.1

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