1 files changed, 2 insertions, 1 deletions

diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index 03e6a2b0b787..50afeb813305 100644
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -149,8 +149,9 @@ static struct notifier_block __cpuinitdata cpu_nfb = {
 __init void spawn_softlockup_task(void)
 {
         void *cpu = (void *)(long)smp_processor_id();
+        int err = cpu_callback(&cpu_nfb, CPU_UP_PREPARE, cpu);
 
-        cpu_callback(&cpu_nfb, CPU_UP_PREPARE, cpu);
+        BUG_ON(err == NOTIFY_BAD);
         cpu_callback(&cpu_nfb, CPU_ONLINE, cpu);
         register_cpu_notifier(&cpu_nfb);