diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 533ee803c79aa03b1357dd83d4f8f7a0fabc4d95..55552f719b25b3f976b8360503f04665301fe505 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1960,7 +1960,8 @@ static void nbd_disconnect_and_put(struct nbd_device *nbd)
 	 * config ref and try to destroy the workqueue from inside the work
 	 * queue.
 	 */
-	flush_workqueue(nbd->recv_workq);
+	if (nbd->recv_workq)
+		flush_workqueue(nbd->recv_workq);
 	if (test_and_clear_bit(NBD_RT_HAS_CONFIG_REF,
 			       &nbd->config->runtime_flags))
 		nbd_config_put(nbd);