diff options
| author | Dave Martin <Dave.Martin@arm.com> | 2017-03-27 15:10:59 +0100 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-07-04 12:11:11 +0200 |
| commit | 4730ff4ab196c63d94aff3de05c75c1759ca5aa3 (patch) | |
| tree | c95897cfab23d0c98d580b22f99f552bbd8791bc /arch/sparc | |
| parent | 49c415f163d3c3e32852d131199e036d8a18f568 (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: Willy Tarreau <w@1wt.eu>
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 7ff45e4ba..875ddf00d 100644 --- a/arch/sparc/kernel/ptrace_64.c +++ b/arch/sparc/kernel/ptrace_64.c @@ -308,7 +308,7 @@ 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, |