* interference; SUID, SGID and LSM creds get determined differently
* under ptrace.
*/
- retval = mutex_lock_interruptible(&task->cred_guard_mutex);
- if (retval < 0)
+ retval = -ERESTARTNOINTR;
+ if (mutex_lock_interruptible(&task->cred_guard_mutex))
goto out;
task_lock(task);