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AHgh+Rps/oNS49v04mNe335tzvdRiZKuiHqI5rBOaKrYuJr4bx0RU+8eqmDUzYeyU4honOVQKjrQ7zRTJW5GUM4=@vger.kernel.org X-Gm-Message-State: AFuF++mwrY22xochh+pXEj+NUjlgQ7vEW4YG7/rsuAw3pWd+ihOCwQ5n Ka2cSuPHmYbRFndOuRdvzQjiskekWXYkUKCG5EunARqPf66/7buxQFvyTlTq6q+WNopaWbP9ElF y4C3EYjYr7NdRverUhh3PAxOrYIYym66aEbcQGAe9OZST4yRpLeahMQ/BHcI= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:4fd3:b0:4b3:880a:f08a with SMTP id 5614622812f47-4b3880b1addmr141832b6e.15.1787799662266; Wed, 26 Aug 2026 20:01:02 -0700 (PDT) Date: Wed, 26 Aug 2026 20:01:02 -0700 In-Reply-To: <20260826224944.1592-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a8fa86e.27659fcc.2ceef7.000c.GAE@google.com> Subject: Re: [syzbot] [net?] WARNING: locking bug in tcp_tsq_handler From: syzbot To: edumazet@google.com, hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in tcp_tsq_handler ------------[ cut here ]------------ !lockdep_sock_is_held(sk) && debug_locks WARNING: ./include/net/sock.h:1799 at sock_owned_by_me include/net/sock.h:1799 [inline], CPU#0: kworker/0:0/9 WARNING: ./include/net/sock.h:1799 at sock_owned_by_user include/net/sock.h:1812 [inline], CPU#0: kworker/0:0/9 WARNING: ./include/net/sock.h:1799 at tcp_tsq_handler+0x1a6/0x200 net/ipv4/tcp_output.c:1292, CPU#0: kworker/0:0/9 Modules linked in: CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: wg-crypt-wg0 wg_packet_tx_worker RIP: 0010:sock_owned_by_me include/net/sock.h:1799 [inline] RIP: 0010:sock_owned_by_user include/net/sock.h:1812 [inline] RIP: 0010:tcp_tsq_handler+0x1a6/0x200 net/ipv4/tcp_output.c:1292 Code: 00 97 96 01 e8 fb 15 79 f7 be 02 00 00 00 eb 0a e8 ef 15 79 f7 be 01 00 00 00 4c 89 ff e8 a2 7f 8e fa eb d0 e8 db 15 79 f7 90 <0f> 0b 90 e9 fd fe ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 07 RSP: 0018:ffffc90000007bb0 EFLAGS: 00010246 RAX: ffffffff8a4e9ad5 RBX: ffff88805ab935d0 RCX: ffff88801defddc0 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000100 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000000f64 R12: dffffc0000000000 R13: ffffc90000007c20 R14: ffff88805ab93400 R15: ffff88805ab93400 FS: 0000000000000000(0000) GS:ffff888124ce0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe3b037048 CR3: 000000000eb48000 CR4: 00000000003526f0 Call Trace: tcp_tsq_workfn+0x384/0x410 net/ipv4/tcp_output.c:1325 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470 bh_worker+0x451/0x870 kernel/workqueue.c:3773 tasklet_action+0xc/0x70 kernel/softirq.c:997 handle_softirqs+0x226/0x860 kernel/softirq.c:645 do_softirq+0x77/0xd0 kernel/softirq.c:546 __local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473 wg_socket_send_skb_to_peer+0x16b/0x1d0 drivers/net/wireguard/socket.c:183 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline] wg_packet_tx_worker+0x1c8/0x7e0 drivers/net/wireguard/send.c:276 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3551 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Tested on: commit: 73e3f071 Merge tag 'nfs-for-7.3-1' of git://git.linux-.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15425625580000 kernel config: https://syzkaller.appspot.com/x/.config?x=22381429a4c2735a dashboard link: https://syzkaller.appspot.com/bug?extid=2d770620059281e225a4 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=10bb399e580000