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-rw-r--r--kernel/workqueue.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index f869aff..565cf7a 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));