1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index f869aff6bc0c..565cf7a1febd 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -590,6 +590,8 @@ static int workqueue_cpu_callback(struct notifier_block *nfb,
 
         case CPU_UP_CANCELED:
                 list_for_each_entry(wq, &workqueues, list) {
+                        if (!per_cpu_ptr(wq->cpu_wq, hotcpu)->thread)
+                                continue;
                         /* Unbind so it can run. */
                         kthread_bind(per_cpu_ptr(wq->cpu_wq, hotcpu)->thread,
                                      any_online_cpu(cpu_online_map));