diff options
| author | Dave Martin <Dave.Martin@arm.com> | 2017-01-06 17:54:51 +0000 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-07-04 11:51:29 +0200 |
| commit | 5ac36fdbec9d32d38f752b140b106f95da7c9f6a (patch) | |
| tree | a8411201b7f860af91b449c166696cb01fd3851d | |
| parent | 17807376ba092825872b870532d1d4d00570ac9f (diff) | |
tile/ptrace: Preserve previous registers for short regset write
commit fd7c99142d77dc4a851879a66715abf12a3193fb 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>
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
| -rw-r--r-- | arch/tile/kernel/ptrace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/tile/kernel/ptrace.c b/arch/tile/kernel/ptrace.c index 0f83ed460..d0dac73a2 100644 --- a/arch/tile/kernel/ptrace.c +++ b/arch/tile/kernel/ptrace.c @@ -110,7 +110,7 @@ static int tile_gpr_set(struct task_struct *target, const void *kbuf, const void __user *ubuf) { int ret; - struct pt_regs regs; + struct pt_regs regs = *task_pt_regs(target); ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, ®s, 0, sizeof(regs)); |