diff options
author | 2017-01-06 17:54:51 +0000 | |
---|---|---|
committer | 2017-01-06 15:14:08 -0500 | |
commit | fd7c99142d77dc4a851879a66715abf12a3193fb (patch) | |
tree | 5fe0d6f6b165d867bb76c296c0afbb5b22c52f47 /arch/tile | |
parent | Linux 4.10-rc2 (diff) | |
download | linux-fd7c99142d77dc4a851879a66715abf12a3193fb.tar.gz linux-fd7c99142d77dc4a851879a66715abf12a3193fb.tar.bz2 linux-fd7c99142d77dc4a851879a66715abf12a3193fb.zip |
tile/ptrace: Preserve previous registers for 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.
Cc: stable@vger.kernel.org
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Diffstat (limited to 'arch/tile')
-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 d89b7011667c..e279572824b1 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)); |