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-rw-r--r--kernel/softirq.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 3789ca98197..bf25015dce1 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -612,7 +612,9 @@ static struct notifier_block __cpuinitdata cpu_nfb = {
__init int spawn_ksoftirqd(void)
{
void *cpu = (void *)(long)smp_processor_id();
- cpu_callback(&cpu_nfb, CPU_UP_PREPARE, cpu);
+ int err = 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);
return 0;