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| author | Dave Martin <Dave.Martin@arm.com> | 2017-01-18 17:25:23 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2017-01-18 19:05:10 +0100 |
| commit | aeb1f39d814b2e21e5e5706a48834bfd553d0059 (patch) | |
| tree | 3f09fcb9c232e1df6bb440abb4a19def4bbd696c /arch | |
| parent | arm64/ptrace: Preserve previous registers for short regset write (diff) | |
| download | linux-aeb1f39d814b2e21e5e5706a48834bfd553d0059.tar.xz linux-aeb1f39d814b2e21e5e5706a48834bfd553d0059.zip | |
arm64/ptrace: Avoid uninitialised struct padding in fpr_set()
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.
Cc: <stable@vger.kernel.org> # 3.7.x-
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/include/uapi/asm/ptrace.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/uapi/asm/ptrace.h b/arch/arm64/include/uapi/asm/ptrace.h index b5c3933ed441..d1ff83dfe5de 100644 --- 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 { |