From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f80.google.com (mail-oa1-f80.google.com [209.85.160.80]) (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 2EC913FB046 for ; Fri, 15 May 2026 12:05:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.80 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778846723; cv=none; b=h0+ZTJYnF/1QIjER55VM0sdoh5E9/OFW+pY6UxUgxO5I/2oKLw8cLvMp2I8e5+pQ0obdwENJxRs9XTgk0hbohOnoEjzXFk6cbnXLOsj2in/myFqJfei4Q7/z1Y9hcvIwzpGUW3KNtIHxNUeyj3612YHbNmuGcnU1HAGegT+M6H8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778846723; c=relaxed/simple; bh=Jer2BC/va0AeVuOM6s5SCldIYf3dZe0BsgnG0Yn7dkU=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=uJGWrj0j4TGT5HusjZ/hKkUWhOhQrNojBxFypoKkq4KgtdbYvERJMQjS64W4He2Fe6Jozo2dfMb5EXUMfkcMMfw7MK36024Aahc7wyrSnauAn7W7hAw03QVCEkVwA1X+Nrx3oCjGaNUkRyZZCXW0QUjupbQUyNh57PIEuVEwIlg= 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=209.85.160.80 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-oa1-f80.google.com with SMTP id 586e51a60fabf-43a0d22ba9bso2800385fac.0 for ; Fri, 15 May 2026 05:05:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778846721; x=1779451521; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=xG79SxzP85bk+Ef+HUcBRKzjUlic/7Ew2qFuPNNcY8k=; b=Q8pweIlBSwxcUnszbDjRtCbSy5q/svXCwA+lAcNOu7FjSANKHL3mT7+p9cE11XqdcQ KnNlqWrZkGEvseKaZeVuYIJkGQ0+nxyM4OVM8/Z9cFNC7sMeMIsb6gxQAvlspqqLBHDy PMA/M4sQq+4WXpdc9zktjBZS0ItzYg9CdUz8YgrmZKZWSZUD/jHHXrTq76GmHcAG/S8h s+1m2Z4E7nzjhlnPlj35FyxjNM6GDIiPDoi4yQ1QK1pY+V2jdBxqHDa+Ucq+fErPYSH2 8m7U2ShZvP6AgBIvW2F9zGfxSKUqciccRXWZr1HwYztKuWJkk8+a6+9xrE5JHhv7mQIK 9ODw== X-Forwarded-Encrypted: i=1; AFNElJ8jbcolqDT7sKHk3zPyxVy8jZxoGNPdpWZDniDOh7lqnOaaTWPAetsGfAAxUjbR5xUx2Xl1WlK3IdscoIs=@vger.kernel.org X-Gm-Message-State: AOJu0YwChUPQJq29ZaEU9KJJyNcy5TtqHD9RuKcjZc2LJPl7Cuv8Xg+l i/+8bqZANJFuzX233sTO/Z5Z3rms4bM62j3EupEwnP+Iw9shcCYpHaZFPK2/hnNQqW/iZDUCYgc AFavp+9BlsAR4y66yGzoD7Yu7Q+rc7nb2GJm+hwzdQemSywAmsJmn9t9/dNg= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1746:b0:688:2480:7fa8 with SMTP id 006d021491bc7-69c942dac4dmr2292738eaf.21.1778846721159; Fri, 15 May 2026 05:05:21 -0700 (PDT) Date: Fri, 15 May 2026 05:05:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a070c01.050a0220.358c9.0001.GAE@google.com> Subject: [syzbot] [bluetooth?] WARNING in hci_conn_drop (4) From: syzbot To: 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: 5cbb61bf4168 arm64/fpsimd: ptrace: zero target's fpsimd_st.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=13f0ebce580000 kernel config: https://syzkaller.appspot.com/x/.config?x=a834c6344141a58b dashboard link: https://syzkaller.appspot.com/bug?extid=195b4c12c5b8c9a8eb8b compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/04156ec16593/disk-5cbb61bf.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6bfa041e2c79/vmlinux-5cbb61bf.xz kernel image: https://storage.googleapis.com/syzbot-assets/a92d82d8a79e/Image-5cbb61bf.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+195b4c12c5b8c9a8eb8b@syzkaller.appspotmail.com ------------[ cut here ]------------ workqueue: cannot queue hci_conn_timeout on wq hci4 WARNING: kernel/workqueue.c:2298 at __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296, CPU#0: kworker/0:5/4769 Modules linked in: CPU: 0 UID: 0 PID: 4769 Comm: kworker/0:5 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: events l2cap_chan_timeout pstate: 634000c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296 lr : __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296 sp : ffff800092887810 x29: ffff800092887850 x28: ffff700012510f78 x27: ffff0000d64aba88 x26: ffff0000d629f800 x25: 0000000000000008 x24: ffff0000d629f9c0 x23: dfff800000000000 x22: ffff0000de09572c x21: 0000000004208060 x20: ffff800089f06000 x19: ffff0000c5968a58 x18: 1fffe00035c20e20 x17: ffff8000888db000 x16: ffff80008898cfc0 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 2aca8fde2d60a500 x8 : 2aca8fde2d60a500 x7 : ffff8000804886d0 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000802f13b0 x2 : 0000000100000000 x1 : ffff0000de095700 x0 : 0000000000000000 Call trace: __queue_work+0xf6c/0x12f8 kernel/workqueue.c:2296 (P) __queue_delayed_work+0xf4/0x2b4 kernel/workqueue.c:2548 queue_delayed_work_on+0xcc/0x140 kernel/workqueue.c:2600 queue_delayed_work include/linux/workqueue.h:711 [inline] hci_conn_drop+0x174/0x29c include/net/bluetooth/hci_core.h:1712 l2cap_chan_del+0x220/0x48c net/bluetooth/l2cap_core.c:672 l2cap_chan_close+0x3e4/0x5ac net/bluetooth/l2cap_core.c:-1 l2cap_chan_timeout+0x120/0x29c net/bluetooth/l2cap_core.c:431 process_one_work+0x78c/0x173c kernel/workqueue.c:3302 process_scheduled_works+0xdc/0x13c kernel/workqueue.c:3385 worker_thread+0x770/0xbd0 kernel/workqueue.c:3466 kthread+0x2f0/0x3c0 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 irq event stamp: 81246 hardirqs last enabled at (81245): [] __cancel_work+0xf4/0x1a4 kernel/workqueue.c:4454 hardirqs last disabled at (81246): [] queue_delayed_work_on+0x54/0x140 kernel/workqueue.c:2596 softirqs last enabled at (81238): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (81238): [] release_sock+0x150/0x228 net/core/sock.c:3825 softirqs last disabled at (81234): [] spin_lock_bh include/linux/spinlock.h:348 [inline] softirqs last disabled at (81234): [] release_sock+0x34/0x228 net/core/sock.c:3812 ---[ end trace 0000000000000000 ]--- --- This report is generated by a bot. 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