| commit | 9dd73f72f218320c6c90da5f834996e7360dc227 | [log] [tgz] |
|---|---|---|
| author | Dave Martin <Dave.Martin@arm.com> | Wed Jan 18 16:25:21 2017 +0000 |
| committer | Catalin Marinas <catalin.marinas@arm.com> | Wed Jan 18 18:05:06 2017 +0000 |
| tree | c2eb10e5efeb801c7ecde2d37569497bb388c347 | |
| parent | 9a17b876b573441bfb3387ad55d98bf7184daf9d [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> # 3.19.x-
Fixes: 766a85d7bc5d ("arm64: ptrace: add NT_ARM_SYSTEM_CALL regset")
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>