[PATCH] fix the exit-vs-timer race fix

As Roland McGrath <roland@redhat.com> points out, we need to zero
task->it_virt_value to prevent timer-based signal delivery, not
->it_virt_incr.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/exit.c

@@ -740,7 +740,7 @@ static void exit_notify(struct task_struct *tsk)
 	 * Clear these here so that update_process_times() won't try to deliver
 	 * itimer, profile or rlimit signals to this task while it is in late exit.
 	 */
-	tsk->it_virt_incr = 0;
+	tsk->it_virt_value = 0;
 	tsk->it_prof_value = 0;
 	tsk->rlim[RLIMIT_CPU].rlim_cur = RLIM_INFINITY;