diff options
| author | Dave Martin <Dave.Martin@arm.com> | 2017-03-27 15:10:59 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-31 10:31:46 +0200 |
| commit | 84b94c4356c668ebe4532b3a999cf375f0089310 (patch) | |
| tree | 6d2dd5c5ed98c1921024454333dbcefd9f8613d8 /arch/sparc | |
| parent | 0ba34c87f7ce04232295ebf4991cd3ff36ea5abd (diff) | |
sparc/ptrace: Preserve previous registers for short regset write
commit d3805c546b275c8cc7d40f759d029ae92c7175f2 upstream.
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET
to fill all the registers, the thread's old registers are preserved.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/kernel/ptrace_64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c index ac082dd8c67d..7037ca3b4328 100644 --- a/arch/sparc/kernel/ptrace_64.c +++ b/arch/sparc/kernel/ptrace_64.c @@ -313,7 +313,7 @@ static int genregs64_set(struct task_struct *target, } if (!ret) { - unsigned long y; + unsigned long y = regs->y; ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &y, |