Messages in this thread Patch in this message | | | From | Jiri Slaby <> | Subject | [PATCH 3.12 190/235] arm64/ptrace: Avoid uninitialised struct padding in fpr_set() | Date | Fri, 27 Jan 2017 11:55:23 +0100 |
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From: Dave Martin <Dave.Martin@arm.com>
3.12-stable review patch. If anyone has any objections, please let me know.
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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@arm.com> Acked-by: Will Deacon <Will.Deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Jiri Slaby <jslaby@suse.cz> --- arch/arm64/include/uapi/asm/ptrace.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h index 6913643bbe54..c136fd53c847 100644 --- a/arch/arm64/include/uapi/asm/ptrace.h +++ b/arch/arm64/include/uapi/asm/ptrace.h @@ -75,6 +75,7 @@ struct user_fpsimd_state { __uint128_t vregs[32]; __u32 fpsr; __u32 fpcr; + __u32 __reserved[2]; }; struct user_hwdebug_state { -- 2.11.0
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