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(parent: 1c8a946) | patch
arm64/ptrace: Preserve previous registers for short regset write
authorDave Martin <Dave.Martin@arm.com>
Wed, 18 Jan 2017 16:25:20 +0000 (16:25 +0000)
committerCatalin Marinas <catalin.marinas@arm.com>
Wed, 18 Jan 2017 18:05:02 +0000 (18:05 +0000)
commit9a17b876b573441bfb3387ad55d98bf7184daf9d
tree8756fec6c654dd65fb7e6783e7d7fc7db4761617tree | snapshot
parent1c8a946bf3754a59cba1fc373949a8114bfe5aaacommit | diff
arm64/ptrace: Preserve previous registers for short regset write

Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.

Cc: <stable@vger.kernel.org> # 3.7.x-
Fixes: 478fcb2cdb23 ("arm64: Debugging support")
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>
arch/arm64/kernel/ptrace.c diff | blob | history
Beck SC1x5 Kernel