This is a note to let you know that I've just added the patch titled arm64/ptrace: Avoid uninitialised struct padding in fpr_set() 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=summary The filename of the patch is: arm64-ptrace-avoid-uninitialised-struct-padding-in-fpr_set.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@xxxxxxxxxxxxxxx> know about it. >From aeb1f39d814b2e21e5e5706a48834bfd553d0059 Mon Sep 17 00:00:00 2001 From: Dave Martin <Dave.Martin@xxxxxxx> Date: Wed, 18 Jan 2017 16:25:23 +0000 Subject: arm64/ptrace: Avoid uninitialised struct padding in fpr_set() From: Dave Martin <Dave.Martin@xxxxxxx> commit aeb1f39d814b2e21e5e5706a48834bfd553d0059 upstream. This patch adds an explicit __reserved[] field to user_fpsimd_state to replace what was previously unnamed padding. This ensures that data in this region are propagated across assignment rather than being left possibly uninitialised at the destination. Fixes: 60ffc30d5652 ("arm64: Exception handling") Signed-off-by: Dave Martin <Dave.Martin@xxxxxxx> Acked-by: Will Deacon <Will.Deacon@xxxxxxx> Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm64/include/uapi/asm/ptrace.h | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm64/include/uapi/asm/ptrace.h +++ b/arch/arm64/include/uapi/asm/ptrace.h @@ -77,6 +77,7 @@ struct user_fpsimd_state { __uint128_t vregs[32]; __u32 fpsr; __u32 fpcr; + __u32 __reserved[2]; }; struct user_hwdebug_state { Patches currently in stable-queue which might be from Dave.Martin@xxxxxxx are queue-4.9/arm64-ptrace-preserve-previous-registers-for-short-regset-write-3.patch queue-4.9/arm64-ptrace-reject-attempts-to-set-incomplete-hardware-breakpoint-fields.patch queue-4.9/powerpc-ptrace-preserve-previous-tm-fprs-vsrs-on-short-regset-write.patch queue-4.9/arm64-ptrace-preserve-previous-registers-for-short-regset-write-2.patch queue-4.9/arm64-ptrace-avoid-uninitialised-struct-padding-in-fpr_set.patch queue-4.9/arm64-ptrace-preserve-previous-registers-for-short-regset-write.patch queue-4.9/powerpc-ptrace-preserve-previous-fprs-vsrs-on-short-regset-write.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html