Re: [syzbot] [io-uring?] [net?] WARNING: refcount bug in zcrx_unregister_user

[Edward Adam Davis]

#syz test

diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c
index f1464ea8ca64..2dbddf80244d 100644
--- a/io_uring/zcrx.c
+++ b/io_uring/zcrx.c
@@ -567,11 +567,10 @@ static void io_close_queue(struct io_zcrx_ifq *ifq)
 		.mp_priv = ifq,
 	};
 
-	scoped_guard(mutex, &ifq->pp_lock) {
-		netdev = ifq->netdev;
-		netdev_tracker = ifq->netdev_tracker;
-		ifq->netdev = NULL;
-	}
+	guard(mutex)(&ifq->pp_lock);
+	netdev = ifq->netdev;
+	netdev_tracker = ifq->netdev_tracker;
+	ifq->netdev = NULL;
 
 	if (netdev) {
 		if (ifq->if_rxq != -1) {