From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f208.google.com (mail-oi1-f208.google.com [209.85.167.208]) (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 A85223B5F5D for ; Sun, 30 Aug 2026 17:38:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788111514; cv=none; b=YY+CJ8pqWdoY1uWLiEAIXbMO/ZjtpSzTTOqeoqw0V7tE5SNx3JIMRStu8D64FK/2CDVvLZwwBBJFa+hTjBC8KFtunnzR6nsmn++uA6hFrplE/muGhhZo9qRK/yuQMUWhIrWcSzkP1zu/666DMrKNBU3foaCYZfKArmnPkUD/EuM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788111514; c=relaxed/simple; bh=G8uudVDlmu6OBfesgS6iZ9rS4NwZkdL34dsSJd7B7bI=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Kgppa/5RJqAjVFVFAiTvhkDQdlgRcXUQO8RVqC5qxYeZ4VErxw+bwc3hRhS+888L9q+uHT3zhwoxUEZ/G8F5wapbUWd4qZg/46WUwYwJ66b8FIKYTsu3CsEfUW+hGd/i4tz/Osc03feyhA9jRF/JazJnzA1MFG9M6dmXvhg2/oY= 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=209.85.167.208 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-f208.google.com with SMTP id 5614622812f47-485ebc5706cso5880163b6e.0 for ; Sun, 30 Aug 2026 10:38:32 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788111511; x=1788716311; h=content-type:to:from:subject:message-id:in-reply-to:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to:content-type; bh=5VNzQWRFLebN1X6lVK2IUMMclgAeM+X4+PsLzs0+xtk=; b=EViinEaMyw1lF+Myti3cryTkFELUxsXpXP0cUNNADb67aX9Ex9fwALzoiDr85uhyUU kLCd7pWzLXJTr19IUMZWw7cpjoALjYWS8aHbHdA8VZ/iWYLPDNoL0NYmg2H7A/D+ILih 9EF1IcdMdVEZo2f7W8J0XfehRFO4UiQEBhTvOLbBo0wbgb95d7mc4qDXUlAU03I/GYsL 31BLc1gudjJ558pfJKyxllN09lpAmLOoNfiCGRhcPYtj1xjl5SjPDP1rDsmQ+uIZX6Sa x9iS5jqVO9WnK9ERBBhX38sN02dE99wgcHMEHUK4DWiPLaF6jdaZVTfKai6L+GbIcPRm xDQg== X-Forwarded-Encrypted: i=1; AHgh+RpTD9MxNVuKIAKe7s6LwYe1k/O60zZ7N7kMGZ54/Anxe/Z43pMBSQxukwVQhDhfxmmCMlN17yfp0A==@vger.kernel.org X-Gm-Message-State: AFuF++mgIytW+9eGaFovCbJgoafI4wAErEne4lSQEucuYhlWDVRMoPEj 30h+5v0z7kSzMBvur9Tup88Dg7e/LOiHFxVD8VNs0NdV5WufihyeQv7b2L/0QGZbG1tagQ/Y94O TYh45/6/Q8SRtDmzP6z8SsIptTaj/pjl0c6b+3s20pvtSCXGc216unkouxqQ= Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:c145:b0:4b2:8d83:436e with SMTP id 5614622812f47-4b59e7b66f2mr3077637b6e.8.1788111511597; Sun, 30 Aug 2026 10:38:31 -0700 (PDT) Date: Sun, 30 Aug 2026 10:38:31 -0700 In-Reply-To: <6a77c53d.01d0871a.3a0d52.0077.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a946a97.1d9ded08.62e62.0120.GAE@google.com> Subject: Re: [syzbot] [bluetooth?] kernel panic: kernel: panic_on_warn set ... (3) From: syzbot To: axboe@kernel.dk, io-uring@vger.kernel.org, krzk@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: 08dbfad3f504 Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14f47379580000 kernel config: https://syzkaller.appspot.com/x/.config?x=5e4e3a0e188a497e dashboard link: https://syzkaller.appspot.com/bug?extid=fe5ea83cdd7fc263f452 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10c2a379580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16181e25580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ddff5719ec3b/disk-08dbfad3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/4b5e39b20fa5/vmlinux-08dbfad3.xz kernel image: https://storage.googleapis.com/syzbot-assets/eb1f70eed57f/bzImage-08dbfad3.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+fe5ea83cdd7fc263f452@syzkaller.appspotmail.com 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 Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 1 UID: 0 PID: 5905 Comm: kworker/u9:5 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: hci5 hci_conn_timeout Call Trace: vpanic+0x56d/0xa60 kernel/panic.c:651 panic+0xc5/0xd0 kernel/panic.c:788 check_panic_on_warn kernel/panic.c:525 [inline] __warn+0x315/0x4c0 kernel/panic.c:1104 __report_bug+0x276/0x570 lib/bug.c:254 report_bug+0x16b/0x220 lib/bug.c:286 handle_bug+0x9c/0x200 arch/x86/kernel/traps.c:436 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:490 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:593 RIP: 0010:hci_conn_timeout+0xff/0x2c0 net/bluetooth/hci_conn.c:641 Code: 48 89 df e8 e3 f5 09 00 eb 07 e8 ac 50 f1 f6 b0 13 0f b6 f0 48 89 df 5b 41 5c 41 5e 41 5f 5d e9 d7 9f fe ff e8 92 50 f1 f6 90 <0f> 0b 90 eb 8c 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 31 ff ff ff RSP: 0018:ffffc90003097ab0 EFLAGS: 00010293 RAX: ffffffff8ad6630e RBX: ffff888079288000 RCX: ffff88802f728000 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: 00000000ffffffff R08: ffff888079288013 R09: 1ffff1100f251002 R10: dffffc0000000000 R11: ffffed100f251003 R12: dffffc0000000000 R13: ffffffff818f95da R14: ffff888079288a50 R15: ffff888079288010 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 Kernel Offset: disabled Rebooting in 86400 seconds.. --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.