| commit | a672401c00f82e4e19704aff361d9bad18003714 | [log] [tgz] |
|---|---|---|
| author | Dave Martin <Dave.Martin@arm.com> | Wed Jan 18 16:25:22 2017 +0000 |
| committer | Catalin Marinas <catalin.marinas@arm.com> | Wed Jan 18 18:05:08 2017 +0000 |
| tree | 9c3f17a8057785d063b1e6c4b55112b44997deb9 | |
| parent | 9dd73f72f218320c6c90da5f834996e7360dc227 [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> # 4.3.x-
Fixes: 5d220ff9420f ("arm64: Better native ptrace support for compat tasks")
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>