From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) (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 1611E1C245C for ; Tue, 22 Jul 2025 06:51:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753167097; cv=none; b=S3rCp783Snw+Ca2Tq2U+T0PxffirhGZGISxpHqnl9i8bBMpLcdButYRcjk6OT9vWd5lXuW8Em/qGzlf6Z9PyoKJJxTHBhZHJfGtRqozm89zgT5bqbhvGIMwn0rYzJeOZx9mzHKOVDD6Zl5e4jIFbQ4gVu5ZddC2/Kw/clHK6i4A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753167097; c=relaxed/simple; bh=xgAxZl7DfvG5g/XMl3zZFUxkLl4c5i98gywUlj5oQIs=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=PQria6AliOJiXMmqDG/nktNYtaWtMOyuyO/OEzq40g879WM8TIs1c65psY44O8SsaAE/aHBHpmseGBXoXXm0j+DRGMRSIRdxp30KLlu+IwqFYbIJo51vdDNE2RA8ah0BR4ruOju1dpQpJN02eAog/1YS9okEZZ5WZSo8P0Srq78= 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=209.85.166.79 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-io1-f79.google.com with SMTP id ca18e2360f4ac-87b2a58a4c0so468921339f.0 for ; Mon, 21 Jul 2025 23:51:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753167095; x=1753771895; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=lLCMiMflMwhmmOFOL4my4sXggFIoJnCaYfB3eLK/f8g=; b=je3gX/x8NRhuRjQ0Aprsu0Tq/gW/B+6Ins4OUdd3UEXpyWfa6QqJYaSRJtfYabLqvK z0e5/xBRiDj6SvHedB951mCGOLakPZPfDdrycSMremnpvyGT/Ji0syqrmpsVhStVwnS5 cdEm8DvNSmIqdgK7T1ru7IMwybRdvfoG+YDC2PhV35rCSXGJ602prGlFlLA826LQkPIg fG0bMETbzJrZMcIMMeihIopUYYLXstiNONflFbIlURsDbh4Seza8QZ70LsDLCrMC6JD2 kASA+le+xMV1uClr5w259NjCuCVTZ0GiRkaQ95LAUZE4KfmfiXPGr79Tzuvm1dBvmcfU dScA== X-Forwarded-Encrypted: i=1; AJvYcCVY0AAS0AnCOITfkYjmy4FgSrq+BJHKn2WBlY868Uv7Fk0KtijLhZMfN2WXOx7Q1CmHCqxh1u17dlauPl8=@vger.kernel.org X-Gm-Message-State: AOJu0Yw33GqA88SlyFDLCQ9VOBI6NJmRg9P5gga2R55GVTWqBAoqhiE9 OsxryqEgpjBy4Y7ME2GNGERwThPRslietD3DzFRHbZbBC5HhtB97HrlszENnERutYdknYSYtdOU OCdBYopi2I8YuRys638AdFFCjY/fPEVt5n7UAEasVJ8iaAoluq533WU3cRPo= X-Google-Smtp-Source: AGHT+IGuO7YQ+xpFIsRZkxlIQH2UzSSEfl4bOcYqr2nqhAAogyEz0uOFpmmiP7cnjcK0DgiW7o+jfq3aggYa9hDP/yn5t/SQCjJg Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:7403:b0:867:6c90:4867 with SMTP id ca18e2360f4ac-879c2a90d96mr3289162939f.14.1753167095211; Mon, 21 Jul 2025 23:51:35 -0700 (PDT) Date: Mon, 21 Jul 2025 23:51:35 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <687f34f7.a70a0220.21b99c.0008.GAE@google.com> Subject: [syzbot] [bluetooth?] WARNING in l2cap_send_disconn_req (2) From: syzbot To: johan.hedberg@gmail.com, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 6832a9317eee Merge tag 'net-6.16-rc7' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=127117d4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8bff2df4655c5f44 dashboard link: https://syzkaller.appspot.com/bug?extid=e487b7a18d6f21a9811c compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/818bd549a31a/disk-6832a931.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f971d7bc88e2/vmlinux-6832a931.xz kernel image: https://storage.googleapis.com/syzbot-assets/f637a5f4829c/bzImage-6832a931.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e487b7a18d6f21a9811c@syzkaller.appspotmail.com ------------[ cut here ]------------ workqueue: cannot queue hci_tx_work on wq hci2 WARNING: CPU: 0 PID: 981 at kernel/workqueue.c:2258 __queue_work+0xd62/0xfe0 kernel/workqueue.c:2256 Modules linked in: CPU: 0 UID: 0 PID: 981 Comm: kworker/0:3 Not tainted 6.16.0-rc6-syzkaller-00121-g6832a9317eee #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events l2cap_chan_timeout RIP: 0010:__queue_work+0xd62/0xfe0 kernel/workqueue.c:2256 Code: 42 80 3c 20 00 74 08 4c 89 ef e8 a9 2d 95 00 49 8b 75 00 49 81 c7 78 01 00 00 48 c7 c7 00 e9 89 8b 4c 89 fa e8 5f 34 f9 ff 90 <0f> 0b 90 90 e9 f1 f4 ff ff e8 c0 46 35 00 90 0f 0b 90 e9 dd fc ff RSP: 0018:ffffc90003a4f728 EFLAGS: 00010046 RAX: 2e4141edcce3d000 RBX: 0000000000000020 RCX: ffff8880256a8000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: 1ffff11028876538 R08: ffff8880b8624293 R09: 1ffff110170c4852 R10: dffffc0000000000 R11: ffffed10170c4853 R12: dffffc0000000000 R13: ffff88806c564b68 R14: ffff88801a494008 R15: ffff8881443b2978 FS: 0000000000000000(0000) GS:ffff888125c59000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c25779d CR3: 000000003202e000 CR4: 00000000003526f0 Call Trace: queue_work_on+0x181/0x270 kernel/workqueue.c:2392 l2cap_send_disconn_req+0x255/0x3c0 net/bluetooth/l2cap_core.c:1495 l2cap_chan_close+0x3ad/0x980 net/bluetooth/l2cap_core.c:823 l2cap_chan_timeout+0x158/0x390 net/bluetooth/l2cap_core.c:431 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- 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