diff options
| author | Dave Martin <Dave.Martin@arm.com> | 2017-01-06 17:54:51 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-01 08:30:52 +0100 |
| commit | 23bc4e136bca4607f39d65df1ee8ca64359ea2a6 (patch) | |
| tree | 18e6b9a28caa51a68d747306e5a2445ffbe51caf /arch | |
| parent | 63db7c91a3c0ebe0e291feea53e4c63391db9465 (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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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 bdc126faf741..6239aa155f6d 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)); |