Commit 113634c0 authored by Dave Martin's avatar Dave Martin Committed by Sasha Levin

arm64/ptrace: Avoid uninitialised struct padding in fpr_set()

[ Upstream commit aeb1f39d ]

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: 60ffc30d ("arm64: Exception handling")
Signed-off-by: default avatarDave Martin <Dave.Martin@arm.com>
Acked-by: default avatarWill Deacon <Will.Deacon@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 521aff7c
...@@ -75,6 +75,7 @@ struct user_fpsimd_state { ...@@ -75,6 +75,7 @@ struct user_fpsimd_state {
__uint128_t vregs[32]; __uint128_t vregs[32];
__u32 fpsr; __u32 fpsr;
__u32 fpcr; __u32 fpcr;
__u32 __reserved[2];
}; };
struct user_hwdebug_state { struct user_hwdebug_state {
......
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