diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 0d2514b4ff0d..4056f2a3f9d5 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5001,7 +5001,7 @@ static void unbind_workers(int cpu)
 
 		for_each_pool_worker(worker, pool) {
 			kthread_set_per_cpu(worker->task, -1);
-			WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, cpu_possible_mask) < 0);
+			WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, wq_unbound_cpumask) < 0);
 		}
 
 		mutex_unlock(&wq_pool_attach_mutex);