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Patch "lib/ubsan.c: s/missaligned/misaligned/" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled lib/ubsan.c: s/missaligned/misaligned/ to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: lib-ubsan.c-s-missaligned-misaligned.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From b8fe1120b4ba342b4f156d24e952d6e686b20298 Mon Sep 17 00:00:00 2001 From: Andrew Morton <akpm(a)linux-foundation.org> Date: Tue, 6 Feb 2018 15:40:38 -0800 Subject: lib/ubsan.c: s/missaligned/misaligned/ From: Andrew Morton <akpm(a)linux-foundation.org> commit b8fe1120b4ba342b4f156d24e952d6e686b20298 upstream. A vist from the spelling fairy. Cc: David Laight <David.Laight(a)ACULAB.COM> Cc: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- lib/ubsan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/lib/ubsan.c +++ b/lib/ubsan.c @@ -281,7 +281,7 @@ static void handle_null_ptr_deref(struct ubsan_epilogue(&flags); } -static void handle_missaligned_access(struct type_mismatch_data *data, +static void handle_misaligned_access(struct type_mismatch_data *data, unsigned long ptr) { unsigned long flags; @@ -322,7 +322,7 @@ void __ubsan_handle_type_mismatch(struct if (!ptr) handle_null_ptr_deref(data); else if (data->alignment && !IS_ALIGNED(ptr, data->alignment)) - handle_missaligned_access(data, ptr); + handle_misaligned_access(data, ptr); else handle_object_size_mismatch(data, ptr); } Patches currently in stable-queue which might be from akpm(a)linux-foundation.org are queue-4.15/kasan-rework-kconfig-settings.patch queue-4.15/kernel-async.c-revert-async-simplify-lowest_in_progress.patch queue-4.15/lib-ubsan-add-type-mismatch-handler-for-new-gcc-clang.patch queue-4.15/pipe-fix-off-by-one-error-when-checking-buffer-limits.patch queue-4.15/lib-ubsan.c-s-missaligned-misaligned.patch queue-4.15/sched-rt-use-container_of-to-get-root-domain-in-rto_push_irq_work_func.patch queue-4.15/kasan-don-t-emit-builtin-calls-when-sanitization-is-off.patch queue-4.15/fs-proc-kcore.c-use-probe_kernel_read-instead-of-memcpy.patch queue-4.15/pipe-actually-allow-root-to-exceed-the-pipe-buffer-limits.patch queue-4.15/sched-rt-up-the-root-domain-ref-count-when-passing-it-around-via-ipis.patch queue-4.15/kernel-relay.c-revert-kernel-relay.c-fix-potential-memory-leak.patch

7 years, 4 months

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Patch "lib/ubsan: add type mismatch handler for new GCC/Clang" has been added to the 4.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled lib/ubsan: add type mismatch handler for new GCC/Clang to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: lib-ubsan-add-type-mismatch-handler-for-new-gcc-clang.patch and it can be found in the queue-4.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 42440c1f9911b4b7b8ba3dc4e90c1197bc561211 Mon Sep 17 00:00:00 2001 From: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Date: Tue, 6 Feb 2018 15:40:42 -0800 Subject: lib/ubsan: add type mismatch handler for new GCC/Clang From: Andrey Ryabinin <aryabinin(a)virtuozzo.com> commit 42440c1f9911b4b7b8ba3dc4e90c1197bc561211 upstream. UBSAN=y fails to build with new GCC/clang: arch/x86/kernel/head64.o: In function `sanitize_boot_params': arch/x86/include/asm/bootparam_utils.h:37: undefined reference to `__ubsan_handle_type_mismatch_v1' because Clang and GCC 8 slightly changed ABI for 'type mismatch' errors. Compiler now uses new __ubsan_handle_type_mismatch_v1() function with slightly modified 'struct type_mismatch_data'. Let's add new 'struct type_mismatch_data_common' which is independent from compiler's layout of 'struct type_mismatch_data'. And make __ubsan_handle_type_mismatch[_v1]() functions transform compiler-dependent type mismatch data to our internal representation. This way, we can support both old and new compilers with minimal amount of change. Link: http://lkml.kernel.org/r/20180119152853.16806-1-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Reported-by: Sodagudi Prasad <psodagud(a)codeaurora.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- lib/ubsan.c | 48 ++++++++++++++++++++++++++++++++++++++---------- lib/ubsan.h | 14 ++++++++++++++ 2 files changed, 52 insertions(+), 10 deletions(-) --- a/lib/ubsan.c +++ b/lib/ubsan.c @@ -265,14 +265,14 @@ void __ubsan_handle_divrem_overflow(stru } EXPORT_SYMBOL(__ubsan_handle_divrem_overflow); -static void handle_null_ptr_deref(struct type_mismatch_data *data) +static void handle_null_ptr_deref(struct type_mismatch_data_common *data) { unsigned long flags; - if (suppress_report(&data->location)) + if (suppress_report(data->location)) return; - ubsan_prologue(&data->location, &flags); + ubsan_prologue(data->location, &flags); pr_err("%s null pointer of type %s\n", type_check_kinds[data->type_check_kind], @@ -281,15 +281,15 @@ static void handle_null_ptr_deref(struct ubsan_epilogue(&flags); } -static void handle_misaligned_access(struct type_mismatch_data *data, +static void handle_misaligned_access(struct type_mismatch_data_common *data, unsigned long ptr) { unsigned long flags; - if (suppress_report(&data->location)) + if (suppress_report(data->location)) return; - ubsan_prologue(&data->location, &flags); + ubsan_prologue(data->location, &flags); pr_err("%s misaligned address %p for type %s\n", type_check_kinds[data->type_check_kind], @@ -299,15 +299,15 @@ static void handle_misaligned_access(str ubsan_epilogue(&flags); } -static void handle_object_size_mismatch(struct type_mismatch_data *data, +static void handle_object_size_mismatch(struct type_mismatch_data_common *data, unsigned long ptr) { unsigned long flags; - if (suppress_report(&data->location)) + if (suppress_report(data->location)) return; - ubsan_prologue(&data->location, &flags); + ubsan_prologue(data->location, &flags); pr_err("%s address %p with insufficient space\n", type_check_kinds[data->type_check_kind], (void *) ptr); @@ -315,7 +315,7 @@ static void handle_object_size_mismatch( ubsan_epilogue(&flags); } -void __ubsan_handle_type_mismatch(struct type_mismatch_data *data, +static void ubsan_type_mismatch_common(struct type_mismatch_data_common *data, unsigned long ptr) { @@ -326,8 +326,36 @@ void __ubsan_handle_type_mismatch(struct else handle_object_size_mismatch(data, ptr); } + +void __ubsan_handle_type_mismatch(struct type_mismatch_data *data, + unsigned long ptr) +{ + struct type_mismatch_data_common common_data = { + .location = &data->location, + .type = data->type, + .alignment = data->alignment, + .type_check_kind = data->type_check_kind + }; + + ubsan_type_mismatch_common(&common_data, ptr); +} EXPORT_SYMBOL(__ubsan_handle_type_mismatch); +void __ubsan_handle_type_mismatch_v1(struct type_mismatch_data_v1 *data, + unsigned long ptr) +{ + + struct type_mismatch_data_common common_data = { + .location = &data->location, + .type = data->type, + .alignment = 1UL << data->log_alignment, + .type_check_kind = data->type_check_kind + }; + + ubsan_type_mismatch_common(&common_data, ptr); +} +EXPORT_SYMBOL(__ubsan_handle_type_mismatch_v1); + void __ubsan_handle_nonnull_return(struct nonnull_return_data *data) { unsigned long flags; --- a/lib/ubsan.h +++ b/lib/ubsan.h @@ -37,6 +37,20 @@ struct type_mismatch_data { unsigned char type_check_kind; }; +struct type_mismatch_data_v1 { + struct source_location location; + struct type_descriptor *type; + unsigned char log_alignment; + unsigned char type_check_kind; +}; + +struct type_mismatch_data_common { + struct source_location *location; + struct type_descriptor *type; + unsigned long alignment; + unsigned char type_check_kind; +}; + struct nonnull_arg_data { struct source_location location; struct source_location attr_location; Patches currently in stable-queue which might be from aryabinin(a)virtuozzo.com are queue-4.15/kasan-rework-kconfig-settings.patch queue-4.15/lib-ubsan-add-type-mismatch-handler-for-new-gcc-clang.patch queue-4.15/lib-ubsan.c-s-missaligned-misaligned.patch queue-4.15/kasan-don-t-emit-builtin-calls-when-sanitization-is-off.patch

7 years, 4 months

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FAILED: patch "[PATCH] lib/ubsan: add type mismatch handler for new GCC/Clang" failed to apply to 4.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 42440c1f9911b4b7b8ba3dc4e90c1197bc561211 Mon Sep 17 00:00:00 2001 From: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Date: Tue, 6 Feb 2018 15:40:42 -0800 Subject: [PATCH] lib/ubsan: add type mismatch handler for new GCC/Clang UBSAN=y fails to build with new GCC/clang: arch/x86/kernel/head64.o: In function `sanitize_boot_params': arch/x86/include/asm/bootparam_utils.h:37: undefined reference to `__ubsan_handle_type_mismatch_v1' because Clang and GCC 8 slightly changed ABI for 'type mismatch' errors. Compiler now uses new __ubsan_handle_type_mismatch_v1() function with slightly modified 'struct type_mismatch_data'. Let's add new 'struct type_mismatch_data_common' which is independent from compiler's layout of 'struct type_mismatch_data'. And make __ubsan_handle_type_mismatch[_v1]() functions transform compiler-dependent type mismatch data to our internal representation. This way, we can support both old and new compilers with minimal amount of change. Link: http://lkml.kernel.org/r/20180119152853.16806-1-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Reported-by: Sodagudi Prasad <psodagud(a)codeaurora.org> Cc: <stable(a)vger.kernel.org> [4.5+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> diff --git a/lib/ubsan.c b/lib/ubsan.c index 1e2328fa002d..50d1d5c25deb 100644 --- a/lib/ubsan.c +++ b/lib/ubsan.c @@ -265,14 +265,14 @@ void __ubsan_handle_divrem_overflow(struct overflow_data *data, } EXPORT_SYMBOL(__ubsan_handle_divrem_overflow); -static void handle_null_ptr_deref(struct type_mismatch_data *data) +static void handle_null_ptr_deref(struct type_mismatch_data_common *data) { unsigned long flags; - if (suppress_report(&data->location)) + if (suppress_report(data->location)) return; - ubsan_prologue(&data->location, &flags); + ubsan_prologue(data->location, &flags); pr_err("%s null pointer of type %s\n", type_check_kinds[data->type_check_kind], @@ -281,15 +281,15 @@ static void handle_null_ptr_deref(struct type_mismatch_data *data) ubsan_epilogue(&flags); } -static void handle_misaligned_access(struct type_mismatch_data *data, +static void handle_misaligned_access(struct type_mismatch_data_common *data, unsigned long ptr) { unsigned long flags; - if (suppress_report(&data->location)) + if (suppress_report(data->location)) return; - ubsan_prologue(&data->location, &flags); + ubsan_prologue(data->location, &flags); pr_err("%s misaligned address %p for type %s\n", type_check_kinds[data->type_check_kind], @@ -299,15 +299,15 @@ static void handle_misaligned_access(struct type_mismatch_data *data, ubsan_epilogue(&flags); } -static void handle_object_size_mismatch(struct type_mismatch_data *data, +static void handle_object_size_mismatch(struct type_mismatch_data_common *data, unsigned long ptr) { unsigned long flags; - if (suppress_report(&data->location)) + if (suppress_report(data->location)) return; - ubsan_prologue(&data->location, &flags); + ubsan_prologue(data->location, &flags); pr_err("%s address %p with insufficient space\n", type_check_kinds[data->type_check_kind], (void *) ptr); @@ -315,7 +315,7 @@ static void handle_object_size_mismatch(struct type_mismatch_data *data, ubsan_epilogue(&flags); } -void __ubsan_handle_type_mismatch(struct type_mismatch_data *data, +static void ubsan_type_mismatch_common(struct type_mismatch_data_common *data, unsigned long ptr) { @@ -326,8 +326,36 @@ void __ubsan_handle_type_mismatch(struct type_mismatch_data *data, else handle_object_size_mismatch(data, ptr); } + +void __ubsan_handle_type_mismatch(struct type_mismatch_data *data, + unsigned long ptr) +{ + struct type_mismatch_data_common common_data = { + .location = &data->location, + .type = data->type, + .alignment = data->alignment, + .type_check_kind = data->type_check_kind + }; + + ubsan_type_mismatch_common(&common_data, ptr); +} EXPORT_SYMBOL(__ubsan_handle_type_mismatch); +void __ubsan_handle_type_mismatch_v1(struct type_mismatch_data_v1 *data, + unsigned long ptr) +{ + + struct type_mismatch_data_common common_data = { + .location = &data->location, + .type = data->type, + .alignment = 1UL << data->log_alignment, + .type_check_kind = data->type_check_kind + }; + + ubsan_type_mismatch_common(&common_data, ptr); +} +EXPORT_SYMBOL(__ubsan_handle_type_mismatch_v1); + void __ubsan_handle_nonnull_return(struct nonnull_return_data *data) { unsigned long flags; diff --git a/lib/ubsan.h b/lib/ubsan.h index 88f23557edbe..7e30b26497e0 100644 --- a/lib/ubsan.h +++ b/lib/ubsan.h @@ -37,6 +37,20 @@ struct type_mismatch_data { unsigned char type_check_kind; }; +struct type_mismatch_data_v1 { + struct source_location location; + struct type_descriptor *type; + unsigned char log_alignment; + unsigned char type_check_kind; +}; + +struct type_mismatch_data_common { + struct source_location *location; + struct type_descriptor *type; + unsigned long alignment; + unsigned char type_check_kind; +}; + struct nonnull_arg_data { struct source_location location; struct source_location attr_location;

7 years, 4 months

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Patch "lib/ubsan.c: s/missaligned/misaligned/" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled lib/ubsan.c: s/missaligned/misaligned/ to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: lib-ubsan.c-s-missaligned-misaligned.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From b8fe1120b4ba342b4f156d24e952d6e686b20298 Mon Sep 17 00:00:00 2001 From: Andrew Morton <akpm(a)linux-foundation.org> Date: Tue, 6 Feb 2018 15:40:38 -0800 Subject: lib/ubsan.c: s/missaligned/misaligned/ From: Andrew Morton <akpm(a)linux-foundation.org> commit b8fe1120b4ba342b4f156d24e952d6e686b20298 upstream. A vist from the spelling fairy. Cc: David Laight <David.Laight(a)ACULAB.COM> Cc: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- lib/ubsan.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/lib/ubsan.c +++ b/lib/ubsan.c @@ -281,7 +281,7 @@ static void handle_null_ptr_deref(struct ubsan_epilogue(&flags); } -static void handle_missaligned_access(struct type_mismatch_data *data, +static void handle_misaligned_access(struct type_mismatch_data *data, unsigned long ptr) { unsigned long flags; @@ -322,7 +322,7 @@ void __ubsan_handle_type_mismatch(struct if (!ptr) handle_null_ptr_deref(data); else if (data->alignment && !IS_ALIGNED(ptr, data->alignment)) - handle_missaligned_access(data, ptr); + handle_misaligned_access(data, ptr); else handle_object_size_mismatch(data, ptr); } Patches currently in stable-queue which might be from akpm(a)linux-foundation.org are queue-4.14/kasan-rework-kconfig-settings.patch queue-4.14/kernel-async.c-revert-async-simplify-lowest_in_progress.patch queue-4.14/lib-ubsan-add-type-mismatch-handler-for-new-gcc-clang.patch queue-4.14/pipe-fix-off-by-one-error-when-checking-buffer-limits.patch queue-4.14/lib-ubsan.c-s-missaligned-misaligned.patch queue-4.14/sched-rt-use-container_of-to-get-root-domain-in-rto_push_irq_work_func.patch queue-4.14/kasan-don-t-emit-builtin-calls-when-sanitization-is-off.patch queue-4.14/fs-proc-kcore.c-use-probe_kernel_read-instead-of-memcpy.patch queue-4.14/pipe-actually-allow-root-to-exceed-the-pipe-buffer-limits.patch queue-4.14/sched-rt-up-the-root-domain-ref-count-when-passing-it-around-via-ipis.patch queue-4.14/kernel-relay.c-revert-kernel-relay.c-fix-potential-memory-leak.patch

7 years, 4 months

1
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Patch "lib/ubsan: add type mismatch handler for new GCC/Clang" has been added to the 4.14-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled lib/ubsan: add type mismatch handler for new GCC/Clang to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: lib-ubsan-add-type-mismatch-handler-for-new-gcc-clang.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 42440c1f9911b4b7b8ba3dc4e90c1197bc561211 Mon Sep 17 00:00:00 2001 From: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Date: Tue, 6 Feb 2018 15:40:42 -0800 Subject: lib/ubsan: add type mismatch handler for new GCC/Clang From: Andrey Ryabinin <aryabinin(a)virtuozzo.com> commit 42440c1f9911b4b7b8ba3dc4e90c1197bc561211 upstream. UBSAN=y fails to build with new GCC/clang: arch/x86/kernel/head64.o: In function `sanitize_boot_params': arch/x86/include/asm/bootparam_utils.h:37: undefined reference to `__ubsan_handle_type_mismatch_v1' because Clang and GCC 8 slightly changed ABI for 'type mismatch' errors. Compiler now uses new __ubsan_handle_type_mismatch_v1() function with slightly modified 'struct type_mismatch_data'. Let's add new 'struct type_mismatch_data_common' which is independent from compiler's layout of 'struct type_mismatch_data'. And make __ubsan_handle_type_mismatch[_v1]() functions transform compiler-dependent type mismatch data to our internal representation. This way, we can support both old and new compilers with minimal amount of change. Link: http://lkml.kernel.org/r/20180119152853.16806-1-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin(a)virtuozzo.com> Reported-by: Sodagudi Prasad <psodagud(a)codeaurora.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- lib/ubsan.c | 48 ++++++++++++++++++++++++++++++++++++++---------- lib/ubsan.h | 14 ++++++++++++++ 2 files changed, 52 insertions(+), 10 deletions(-) --- a/lib/ubsan.c +++ b/lib/ubsan.c @@ -265,14 +265,14 @@ void __ubsan_handle_divrem_overflow(stru } EXPORT_SYMBOL(__ubsan_handle_divrem_overflow); -static void handle_null_ptr_deref(struct type_mismatch_data *data) +static void handle_null_ptr_deref(struct type_mismatch_data_common *data) { unsigned long flags; - if (suppress_report(&data->location)) + if (suppress_report(data->location)) return; - ubsan_prologue(&data->location, &flags); + ubsan_prologue(data->location, &flags); pr_err("%s null pointer of type %s\n", type_check_kinds[data->type_check_kind], @@ -281,15 +281,15 @@ static void handle_null_ptr_deref(struct ubsan_epilogue(&flags); } -static void handle_misaligned_access(struct type_mismatch_data *data, +static void handle_misaligned_access(struct type_mismatch_data_common *data, unsigned long ptr) { unsigned long flags; - if (suppress_report(&data->location)) + if (suppress_report(data->location)) return; - ubsan_prologue(&data->location, &flags); + ubsan_prologue(data->location, &flags); pr_err("%s misaligned address %p for type %s\n", type_check_kinds[data->type_check_kind], @@ -299,15 +299,15 @@ static void handle_misaligned_access(str ubsan_epilogue(&flags); } -static void handle_object_size_mismatch(struct type_mismatch_data *data, +static void handle_object_size_mismatch(struct type_mismatch_data_common *data, unsigned long ptr) { unsigned long flags; - if (suppress_report(&data->location)) + if (suppress_report(data->location)) return; - ubsan_prologue(&data->location, &flags); + ubsan_prologue(data->location, &flags); pr_err("%s address %p with insufficient space\n", type_check_kinds[data->type_check_kind], (void *) ptr); @@ -315,7 +315,7 @@ static void handle_object_size_mismatch( ubsan_epilogue(&flags); } -void __ubsan_handle_type_mismatch(struct type_mismatch_data *data, +static void ubsan_type_mismatch_common(struct type_mismatch_data_common *data, unsigned long ptr) { @@ -326,8 +326,36 @@ void __ubsan_handle_type_mismatch(struct else handle_object_size_mismatch(data, ptr); } + +void __ubsan_handle_type_mismatch(struct type_mismatch_data *data, + unsigned long ptr) +{ + struct type_mismatch_data_common common_data = { + .location = &data->location, + .type = data->type, + .alignment = data->alignment, + .type_check_kind = data->type_check_kind + }; + + ubsan_type_mismatch_common(&common_data, ptr); +} EXPORT_SYMBOL(__ubsan_handle_type_mismatch); +void __ubsan_handle_type_mismatch_v1(struct type_mismatch_data_v1 *data, + unsigned long ptr) +{ + + struct type_mismatch_data_common common_data = { + .location = &data->location, + .type = data->type, + .alignment = 1UL << data->log_alignment, + .type_check_kind = data->type_check_kind + }; + + ubsan_type_mismatch_common(&common_data, ptr); +} +EXPORT_SYMBOL(__ubsan_handle_type_mismatch_v1); + void __ubsan_handle_nonnull_return(struct nonnull_return_data *data) { unsigned long flags; --- a/lib/ubsan.h +++ b/lib/ubsan.h @@ -37,6 +37,20 @@ struct type_mismatch_data { unsigned char type_check_kind; }; +struct type_mismatch_data_v1 { + struct source_location location; + struct type_descriptor *type; + unsigned char log_alignment; + unsigned char type_check_kind; +}; + +struct type_mismatch_data_common { + struct source_location *location; + struct type_descriptor *type; + unsigned long alignment; + unsigned char type_check_kind; +}; + struct nonnull_arg_data { struct source_location location; struct source_location attr_location; Patches currently in stable-queue which might be from aryabinin(a)virtuozzo.com are queue-4.14/kasan-rework-kconfig-settings.patch queue-4.14/lib-ubsan-add-type-mismatch-handler-for-new-gcc-clang.patch queue-4.14/lib-ubsan.c-s-missaligned-misaligned.patch queue-4.14/kasan-don-t-emit-builtin-calls-when-sanitization-is-off.patch

7 years, 4 months

1
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[PATCH] btrfs: Handle btrfs_set_extent_delalloc failure in fixup worker

by Nikolay Borisov

This function was introduced by 247e743cbe6e ("Btrfs: Use async helpers to deal with pages that have been improperly dirtied") and it didn't do any error handling then. This function might very well fail in ENOMEM situation, yet it's not handled, this could lead to inconsistent state. So let's handle the failure by setting the mapping error bit. Cc: stable(a)vger.kernel.org Signed-off-by: Nikolay Borisov <nborisov(a)suse.com> Reviewed-by: Qu Wenruo <wqu(a)suse.com> Reviewed-by: David Sterba <dsterba(a)suse.com> Signed-off-by: David Sterba <dsterba(a)suse.com> --- Here is the 4.14 backport of upstream commit f3038ee3a3f1017a1cbe9907e31fa12d366c5dcb fs/btrfs/inode.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index c71afd424900..5eaedff28a32 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2101,8 +2101,15 @@ static void btrfs_writepage_fixup_worker(struct btrfs_work *work) goto out; } - btrfs_set_extent_delalloc(inode, page_start, page_end, &cached_state, - 0); + ret = btrfs_set_extent_delalloc(inode, page_start, page_end, + &cached_state, 0); + if (ret) { + mapping_set_error(page->mapping, ret); + end_extent_writepage(page, ret, page_start, page_end); + ClearPageChecked(page); + goto out; + } + ClearPageChecked(page); set_page_dirty(page); out: -- 2.7.4

7 years, 4 months

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[PATCH] btrfs: Handle btrfs_set_extent_delalloc failure in fixup worker

by Nikolay Borisov

This function was introduced by 247e743cbe6e ("Btrfs: Use async helpers to deal with pages that have been improperly dirtied") and it didn't do any error handling then. This function might very well fail in ENOMEM situation, yet it's not handled, this could lead to inconsistent state. So let's handle the failure by setting the mapping error bit. Cc: stable(a)vger.kernel.org Signed-off-by: Nikolay Borisov <nborisov(a)suse.com> Reviewed-by: Qu Wenruo <wqu(a)suse.com> Reviewed-by: David Sterba <dsterba(a)suse.com> Signed-off-by: David Sterba <dsterba(a)suse.com> --- Here is the 4.9 backport of upstream commit f3038ee3a3f1017a1cbe9907e31fa12d366c5dcb fs/btrfs/inode.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 894d56361ea9..a8a1fb40e258 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2063,8 +2063,15 @@ static void btrfs_writepage_fixup_worker(struct btrfs_work *work) goto out; } - btrfs_set_extent_delalloc(inode, page_start, page_end, &cached_state, - 0); + ret = btrfs_set_extent_delalloc(inode, page_start, page_end, + &cached_state, 0); + if (ret) { + mapping_set_error(page->mapping, ret); + end_extent_writepage(page, ret, page_start, page_end); + ClearPageChecked(page); + goto out; + } + ClearPageChecked(page); set_page_dirty(page); out: -- 2.7.4

7 years, 4 months

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Patch "xtensa: fix futex_atomic_cmpxchg_inatomic" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled xtensa: fix futex_atomic_cmpxchg_inatomic to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: xtensa-fix-futex_atomic_cmpxchg_inatomic.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From ca47480921587ae30417dd234a9f79af188e3666 Mon Sep 17 00:00:00 2001 From: Max Filippov <jcmvbkbc(a)gmail.com> Date: Fri, 5 Jan 2018 14:27:58 -0800 Subject: xtensa: fix futex_atomic_cmpxchg_inatomic From: Max Filippov <jcmvbkbc(a)gmail.com> commit ca47480921587ae30417dd234a9f79af188e3666 upstream. Return 0 if the operation was successful, not the userspace memory value. Check that userspace value equals passed oldval, not itself. Don't update *uval if the value wasn't read from userspace memory. This fixes process hang due to infinite loop in futex_lock_pi. It also fixes a bunch of glibc tests nptl/tst-mutexpi*. Signed-off-by: Max Filippov <jcmvbkbc(a)gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/xtensa/include/asm/futex.h | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) --- a/arch/xtensa/include/asm/futex.h +++ b/arch/xtensa/include/asm/futex.h @@ -109,7 +109,6 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 oldval, u32 newval) { int ret = 0; - u32 prev; if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) return -EFAULT; @@ -120,26 +119,24 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, __asm__ __volatile__ ( " # futex_atomic_cmpxchg_inatomic\n" - "1: l32i %1, %3, 0\n" - " mov %0, %5\n" - " wsr %1, scompare1\n" - "2: s32c1i %0, %3, 0\n" - "3:\n" + " wsr %5, scompare1\n" + "1: s32c1i %1, %4, 0\n" + " s32i %1, %6, 0\n" + "2:\n" " .section .fixup,\"ax\"\n" " .align 4\n" - "4: .long 3b\n" - "5: l32r %1, 4b\n" - " movi %0, %6\n" + "3: .long 2b\n" + "4: l32r %1, 3b\n" + " movi %0, %7\n" " jx %1\n" " .previous\n" " .section __ex_table,\"a\"\n" - " .long 1b,5b,2b,5b\n" + " .long 1b,4b\n" " .previous\n" - : "+r" (ret), "=&r" (prev), "+m" (*uaddr) - : "r" (uaddr), "r" (oldval), "r" (newval), "I" (-EFAULT) + : "+r" (ret), "+r" (newval), "+m" (*uaddr), "+m" (*uval) + : "r" (uaddr), "r" (oldval), "r" (uval), "I" (-EFAULT) : "memory"); - *uval = prev; return ret; } Patches currently in stable-queue which might be from jcmvbkbc(a)gmail.com are queue-4.9/xtensa-fix-futex_atomic_cmpxchg_inatomic.patch

7 years, 4 months

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Patch "signal/sh: Ensure si_signo is initialized in do_divide_error" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled signal/sh: Ensure si_signo is initialized in do_divide_error to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: signal-sh-ensure-si_signo-is-initialized-in-do_divide_error.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 0e88bb002a9b2ee8cc3cc9478ce2dc126f849696 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" <ebiederm(a)xmission.com> Date: Mon, 24 Jul 2017 17:30:30 -0500 Subject: signal/sh: Ensure si_signo is initialized in do_divide_error From: Eric W. Biederman <ebiederm(a)xmission.com> commit 0e88bb002a9b2ee8cc3cc9478ce2dc126f849696 upstream. Set si_signo. Cc: Yoshinori Sato <ysato(a)users.sourceforge.jp> Cc: Rich Felker <dalias(a)libc.org> Cc: Paul Mundt <lethal(a)linux-sh.org> Cc: linux-sh(a)vger.kernel.org Fixes: 0983b31849bb ("sh: Wire up division and address error exceptions on SH-2A.") Signed-off-by: "Eric W. Biederman" <ebiederm(a)xmission.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/sh/kernel/traps_32.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/arch/sh/kernel/traps_32.c +++ b/arch/sh/kernel/traps_32.c @@ -607,7 +607,8 @@ asmlinkage void do_divide_error(unsigned break; } - force_sig_info(SIGFPE, &info, current); + info.si_signo = SIGFPE; + force_sig_info(info.si_signo, &info, current); } #endif Patches currently in stable-queue which might be from ebiederm(a)xmission.com are queue-4.9/signal-openrisc-fix-do_unaligned_access-to-send-the-proper-signal.patch queue-4.9/signal-sh-ensure-si_signo-is-initialized-in-do_divide_error.patch

7 years, 4 months

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Patch "watchdog: imx2_wdt: restore previous timeout after suspend+resume" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled watchdog: imx2_wdt: restore previous timeout after suspend+resume to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: watchdog-imx2_wdt-restore-previous-timeout-after-suspend-resume.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 0be267255cef64e1c58475baa7b25568355a3816 Mon Sep 17 00:00:00 2001 From: Martin Kaiser <martin(a)kaiser.cx> Date: Mon, 1 Jan 2018 18:26:47 +0100 Subject: watchdog: imx2_wdt: restore previous timeout after suspend+resume From: Martin Kaiser <martin(a)kaiser.cx> commit 0be267255cef64e1c58475baa7b25568355a3816 upstream. When the watchdog device is suspended, its timeout is set to the maximum value. During resume, the previously set timeout should be restored. This does not work at the moment. The suspend function calls imx2_wdt_set_timeout(wdog, IMX2_WDT_MAX_TIME); and resume reverts this by calling imx2_wdt_set_timeout(wdog, wdog->timeout); However, imx2_wdt_set_timeout() updates wdog->timeout. Therefore, wdog->timeout is set to IMX2_WDT_MAX_TIME when we enter the resume function. Fix this by adding a new function __imx2_wdt_set_timeout() which only updates the hardware settings. imx2_wdt_set_timeout() now calls __imx2_wdt_set_timeout() and then saves the new timeout to wdog->timeout. During suspend, we call __imx2_wdt_set_timeout() directly so that wdog->timeout won't be updated and we can restore the previous value during resume. This approach makes wdog->timeout different from the actual setting in the hardware which is usually not a good thing. However, the two differ only while we're suspended and no kernel code is running, so it should be ok in this case. Signed-off-by: Martin Kaiser <martin(a)kaiser.cx> Reviewed-by: Guenter Roeck <linux(a)roeck-us.net> Signed-off-by: Guenter Roeck <linux(a)roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim(a)iguana.be> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/watchdog/imx2_wdt.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) --- a/drivers/watchdog/imx2_wdt.c +++ b/drivers/watchdog/imx2_wdt.c @@ -169,15 +169,21 @@ static int imx2_wdt_ping(struct watchdog return 0; } -static int imx2_wdt_set_timeout(struct watchdog_device *wdog, - unsigned int new_timeout) +static void __imx2_wdt_set_timeout(struct watchdog_device *wdog, + unsigned int new_timeout) { struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); - wdog->timeout = new_timeout; - regmap_update_bits(wdev->regmap, IMX2_WDT_WCR, IMX2_WDT_WCR_WT, WDOG_SEC_TO_COUNT(new_timeout)); +} + +static int imx2_wdt_set_timeout(struct watchdog_device *wdog, + unsigned int new_timeout) +{ + __imx2_wdt_set_timeout(wdog, new_timeout); + + wdog->timeout = new_timeout; return 0; } @@ -371,7 +377,11 @@ static int imx2_wdt_suspend(struct devic /* The watchdog IP block is running */ if (imx2_wdt_is_running(wdev)) { - imx2_wdt_set_timeout(wdog, IMX2_WDT_MAX_TIME); + /* + * Don't update wdog->timeout, we'll restore the current value + * during resume. + */ + __imx2_wdt_set_timeout(wdog, IMX2_WDT_MAX_TIME); imx2_wdt_ping(wdog); } Patches currently in stable-queue which might be from martin(a)kaiser.cx are queue-4.9/watchdog-imx2_wdt-restore-previous-timeout-after-suspend-resume.patch

7 years, 4 months

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