| commit | 99dfe80a2a246c600440a815741fd2e74a8b4977 | [log] [tgz] |
|---|---|---|
| author | Dave Martin <Dave.Martin@arm.com> | Thu Jan 05 16:50:57 2017 +0000 |
| committer | Michael Ellerman <mpe@ellerman.id.au> | Fri Jan 20 14:54:43 2017 +1100 |
| tree | d63db8f9b737a2a2cac0e70a030dbfb5cc3fc007 | |
| parent | 27593d72c4ad451ed13af35354b941bcd0abcec6 [diff] |
powerpc/ptrace: Preserve previous fprs/vsrs on 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.
Fixes: c6e6771b87d4 ("powerpc: Introduce VSX thread_struct and CONFIG_VSX")
Cc: stable@vger.kernel.org # v2.6.27+
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>