diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index e725d8d5ab0b2e321399f00804dd00d953f7184b..f3f191ba8ca4bbe6b7d87a7accc84bd648e4d718 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1021,6 +1021,7 @@ static void nbd_config_put(struct nbd_device *nbd)
 			}
 			kfree(config->socks);
 		}
+		kfree(nbd->config);
 		nbd->config = NULL;
 
 		nbd->tag_set.timeout = 0;