From: Edward Adam Davis <eadavis@qq.com>
To: syzbot+a43f81e0646c5bbd2b88@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [io-uring?] [net?] WARNING: refcount bug in zcrx_unregister_user
Date: Wed, 12 Aug 2026 12:42:20 +0800 [thread overview]
Message-ID: <tencent_A3696643AC645AB76E577BE6CD137EE36405@qq.com> (raw)
In-Reply-To: <6a7bbccb.ac361c09.22ff0a.0048.GAE@google.com>
#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) {
next prev parent reply other threads:[~2026-08-12 4:42 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-12 0:22 syzbot
2026-08-12 4:42 ` Edward Adam Davis [this message]
2026-08-12 5:23 ` syzbot
2026-08-12 9:33 ` Edward Adam Davis
2026-08-12 10:36 ` syzbot
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