diff options
| author | Dave Martin <Dave.Martin@arm.com> | 2017-01-06 17:54:51 +0000 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2017-03-06 17:29:12 -0500 |
| commit | d6c83f5607bfcc1420e869cde808caf5b6013964 (patch) | |
| tree | e7efc318b83e7a1fd5028f93b7bfb26155e00189 /arch | |
| parent | f24c4f609ca5b05186a76d9a74522b6f6c3a873f (diff) | |
tile/ptrace: Preserve previous registers for short regset write
[ Upstream commit fd7c99142d77dc4a851879a66715abf12a3193fb ]
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
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'arch')
| -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 f84eed8243da..1231bff72582 100644 --- a/arch/tile/kernel/ptrace.c +++ b/arch/tile/kernel/ptrace.c @@ -111,7 +111,7 @@ 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)); |