From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f199.google.com (mail-oi1-f199.google.com [209.85.167.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 732BA36492D for ; Wed, 30 Sep 2026 09:30:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790760641; cv=none; b=idCAA2X21KVIJWAvnNQo8llH+kDwO80JPvC2Qeg2FX9kyWhQfvRMzgzKXJ/kypCLWLzH/pqBzyy6laJ59g5RBF4DilEjOA05MhqYeZuv9Oobd4oM3U2xrpmA3JwYIwFHXqrr6omgdJLfXvfsQYGXJ8wxMInhDNWPUB0aJr2sXYI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790760641; c=relaxed/simple; bh=B6KQ7Q761wXAxkqO4A4KBxGTbhjvP4/JfP+EH6M3vPk=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=IvC5qqAeEoURnnxkG2x9cTn+e/k2MY5cRW3+Ieztb0I6oW4Xuk+735V/vqTcCrwrdV5zRg19szjifU1BBiZwYbKKC2Pv6RKRokVNwpWXPfeh2q5llGcKCaO/9gopUM+LwvEeUDaE6lDDQWAJDy4IW7SGxdLy8aspQyrRpD03XGU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.167.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oi1-f199.google.com with SMTP id 5614622812f47-4c55ba309c2so8813257b6e.1 for ; Wed, 30 Sep 2026 02:30:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790760638; x=1791365438; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=c432cRXYhw32OvJykm5cpBGmNcdCuznarNCnC6pKqWs=; b=bxCxcxtmu6mc6EYZgjBHa/WrInmESrEonVJJ/k1YOFXEoBQIab7U76YBDumaS7Q6s5 CPHHooz5kGNziFnIyVizkbGU7NJOH7Tq9AfiTjQq+mK0J/gI5LsOeGHX9qDfsi5MlKb4 phV8lnuWwWe+oO7A7S+YQ8pAOC3xix5gs8Dp9de7EIumtrXkZ+vC6HXLgsirgiZXo/Eo NcUhg+/xYToAbRGcoTbab+an1pLMV8u6ctgccegaUfKqJ2IVQrCCqQZ/pnMjhNfbe/FI Rd1jTjFkhVKBJxxhVjYBZ6luiac+Vt6NaxE4NNfQHYdduhGVkfm7/tkp4H8t5QOdW1hJ pXIw== X-Forwarded-Encrypted: i=1; AKwUvBzeQBhuTyfiQX1SkcAZGm9HuMvC9zXhgGPXqwDU+6+zmcy0JkdMm0HiMe4d8ri6+dvfCjHwQFE=@vger.kernel.org X-Gm-Message-State: AFuF++mWmn8TWM3jy+YpsaaqcgBdK1vjZjQx62M29hWBzCKHOEysH7d6 kjRf/XWKZX7hYp/L87zWZDELCmHxSTwBN3vKrtbyncFRzBhLmD7fiDRGFPInETxvJp0regrjHxD 0GO8J2R8YBzoZkG4AsXgtyUQ7BSxRhvhl1QdYocjinMbwtpk5Xf+tO3DYneU= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:6902:b0:4c2:13aa:fa13 with SMTP id 5614622812f47-4f1b0d0ce54mr927548b6e.1.1790760638380; Wed, 30 Sep 2026 02:30:38 -0700 (PDT) Date: Wed, 30 Sep 2026 02:30:38 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6abcd6be.80e1c6cc.1e8e5f.0086.GAE@google.com> Subject: [syzbot] [tipc?] INFO: task hung in tipc_net_finalize_work From: syzbot To: davem@davemloft.net, edumazet@google.com, horms@kernel.org, jmaloy@redhat.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, tipc-discussion@lists.sourceforge.net, tung.quang.nguyen@est.tech Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: c4e9f74da438 Merge tag 'v7.3-p5' of git://git.kernel.org/p.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16609405580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9d4242cb1c54cdf7 dashboard link: https://syzkaller.appspot.com/bug?extid=920b21f1eb9357bab704 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2d84978a00bd/disk-c4e9f74d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f8ae6a5a134b/vmlinux-c4e9f74d.xz kernel image: https://storage.googleapis.com/syzbot-assets/a81070fe6b69/bzImage-c4e9f74d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+920b21f1eb9357bab704@syzkaller.appspotmail.com INFO: task kworker/1:2:1218 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:21560 pid:1218 tgid:1218 ppid:2 task_flags:0x4208060 flags:0x00080000 Workqueue: events tipc_net_finalize_work Call Trace: context_switch kernel/sched/core.c:5533 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7284 __schedule_loop kernel/sched/core.c:7361 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7376 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7433 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 tipc_net_finalize_work+0x1e/0x90 net/tipc/net.c:148 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 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 INFO: task kworker/u8:15:6369 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:15 state:D stack:23624 pid:6369 tgid:6369 ppid:2 task_flags:0x4208060 flags:0x00080000 Workqueue: events_unbound linkwatch_event Call Trace: context_switch kernel/sched/core.c:5533 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7284 __schedule_loop kernel/sched/core.c:7361 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7376 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7433 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 linkwatch_event+0xe/0x60 net/core/link_watch.c:313 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 kthread+0x38b/0x480 kernel/kthread.c:436 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup