diff --git a/kernel/timer.c b/kernel/timer.c
index d644f4e..a2cb1ec 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1694,8 +1694,10 @@
 
 void __init init_timers(void)
 {
-	timer_cpu_notify(&timers_nb, (unsigned long)CPU_UP_PREPARE,
+	int err = timer_cpu_notify(&timers_nb, (unsigned long)CPU_UP_PREPARE,
 				(void *)(long)smp_processor_id());
+
+	BUG_ON(err == NOTIFY_BAD);
 	register_cpu_notifier(&timers_nb);
 	open_softirq(TIMER_SOFTIRQ, run_timer_softirq, NULL);
 }