Commit d92fcf05 authored by Oleg Nesterov's avatar Oleg Nesterov
Browse files

signal: sys_pause() should check signal_pending() 



ERESTART* is always wrong without TIF_SIGPENDING. Teach sys_pause()
to handle the spurious wakeup correctly.

Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
parent 0666fb51

kernel/signal.c

+4 −2
Original line number Diff line number Diff line
@@ -3023,8 +3023,10 @@ SYSCALL_DEFINE2(signal, int, sig, __sighandler_t, handler) 


SYSCALL_DEFINE0(pause)

{

	while (!signal_pending(current)) {

		current->state = TASK_INTERRUPTIBLE;

		schedule();

	}

	return -ERESTARTNOHAND;

}