diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 1ae6028..286847b 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -2059,6 +2059,7 @@
 	if (unlikely(!mutex_trylock(&pool->manager_mutex))) {
 		spin_unlock_irq(&pool->lock);
 		mutex_lock(&pool->manager_mutex);
+		spin_lock_irq(&pool->lock);
 		ret = true;
 	}