From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f78.google.com (mail-oo1-f78.google.com [209.85.161.78]) (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 C6E5518DB35 for ; Sat, 6 Dec 2025 02:25:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764987924; cv=none; b=WKvAlBNQ16JPua9wHwhJS7PXUSmxN92RdyzwjNd7l0Dt5FA9QF4UbmeZvnWeA3TL2LfpJPNCbk7nv018XFrnU0We1sJTFHjLKYNUr0hlOSB+eBtYgYJUcC5Rc5bcT7rPfw0b+PEIbKm7hX5sd/zt50N4rsntZPPXn9StnqFrGac= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764987924; c=relaxed/simple; bh=PygA9F4w9kDDEbkivfJhU39iaA2NDuaJ2/ghDyrDf58=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=GCtg/ud+2ngYUtc4PQionOr5jN8HoByZqYx4hUAB/toajQkZbPthpZ2Ta7A8ZgwImM1HgGKUdlsVT8Ko7oeBEZG+3w3C/Y1tDknn2qkpBmC6S3L5c4MgmZQwvflkh+J2UkL1jQcE5oK1yZa1WtHvFizKTOjITNkaZCVxhBvTgvg= 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=209.85.161.78 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-oo1-f78.google.com with SMTP id 006d021491bc7-6579875eaa2so3533298eaf.3 for ; Fri, 05 Dec 2025 18:25:22 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1764987922; x=1765592722; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=DYgRIi+uMi1BlSZHiAIHkVoXNhvbpwhjPSto8JBqqGw=; b=P3RotOg9S0IES8ZWA8HWqglagnAv9tU82g+9V/ngTIk59RVwv5+AmhtYbPQaucbUdq JiVBXWzA22Ne53TWhi1tT1LJDbnqaIAraSN/dBr90OZs4LHZOZtFU6RJDzg+jJQbjS3w ah7FnFkG1J7lZDUHbagl363VYpUjpOHyvnQiH9O2NIr0Lxsv5hZPZD2bd8sHdquXc6yH sHB2nA/jzCS0YIA+sToT2hi+LE2AupVjLYh7XQHAKcK481XYTOsYSuxt2nG5G6LZO5fp eaIrNd+W380tqspP4SJvHJS/os9etvn9jdcGNB0mgvPTttVjhjrqfsPYaYmZtx196Irb ThnQ== X-Gm-Message-State: AOJu0YyPX7ncyjZs3nm65qjaTtbSpxc9E8zfUxD4hAMla59vFGs71Xie 9ut5LMpe9TwK1jPyRGpn3TzVyUgPwNw8lPCmc+biUxoJW9I0aEfJGSf20R4Pg84kXzq3/0WO/Nj dx+qcWwiNRGJpBR7WQnYvvCBoH3+efYWQaqDc1Jz0yxHZbvz7A7+pNq0SL55NKQ== X-Google-Smtp-Source: AGHT+IEUuZDWDmEMmwk8RzegtbA4EcQ3+G6rjEY8bprn/pESbVDhXqt/AlLCnNpUWkgbnaFXbpBhPU9EIqcPAHR9FDa5eKEokOjy Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:809:b0:659:9a49:8fd8 with SMTP id 006d021491bc7-6599a99461emr547345eaf.81.1764987921934; Fri, 05 Dec 2025 18:25:21 -0800 (PST) Date: Fri, 05 Dec 2025 18:25:21 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69339411.050a0220.3a66f.0007.GAE@google.com> Subject: [syzbot] [bluetooth?] INFO: task hung in get_signal (2) 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: 7d31f578f323 Add linux-next specific files for 20251128 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=17a242b4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=ec890b8333fce099 dashboard link: https://syzkaller.appspot.com/bug?extid=edae0f1918326febf965 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16756512580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/9bcc6eb60940/disk-7d31f578.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/895bc1bfae48/vmlinux-7d31f578.xz kernel image: https://storage.googleapis.com/syzbot-assets/48f15e4679f3/bzImage-7d31f578.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+edae0f1918326febf965@syzkaller.appspotmail.com INFO: task syz-executor:5969 blocked for more than 143 seconds. Not tainted syzkaller #0 task:syz-executor state:D Call Trace: do_wait_for_common kernel/sched/completion.c:100 [inline] __wait_for_common kernel/sched/completion.c:121 [inline] wait_for_common kernel/sched/completion.c:132 [inline] wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:153 __flush_work+0x9b9/0xbc0 kernel/workqueue.c:4281 get_signal+0x1285/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0x9a/0x7a0 arch/x86/kernel/signal.c:337 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fac0ed9148a #2: ffff88807c668ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400 net/bluetooth/hci_sync.c:331 3 locks held by kworker/u9:3/5978: #0: ffff888057c3e948 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 kernel/workqueue.c:3236 #1: ffffc9000412fb80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 kernel/workqueue.c:3237 #2: ffff88807ef20ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400 net/bluetooth/hci_sync.c:331 3 locks held by kworker/u9:4/5979: #0: ffff88801e7c2148 ((wq_completion)hci4){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 kernel/workqueue.c:3236 #1: ffffc900040afb80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 kernel/workqueue.c:3237 #2: ffff888054900ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400 net/bluetooth/hci_sync.c:331 3 locks held by kworker/u9:5/6113: #0: ffff8880296d3148 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 kernel/workqueue.c:3236 #1: ffffc90002f17b80 ( (work_completion)(&hdev->cmd_sync_work) ){+.+.}-{0:0} 3 locks held by kworker/u9:9/11288: #1: ffffc9000411fb80 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 kernel/workqueue.c:3237 #2: ffff888030d98ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400 net/bluetooth/hci_sync.c:331 3 locks held by kworker/u9:10/11292: #0: ffff88801e7c1148 ((wq_completion)hci4#2){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 kernel/workqueue.c:3236 #1: ffffc9000c69fb80 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 kernel/workqueue.c:3237 #2: ffff8880549000c0 (&hdev->lock){+.+.}-{4:4}, at: hci_event_packet+0x162/0x1260 net/bluetooth/hci_event.c:7736 7 locks held by kworker/u9:11/12552: --- This report is generated by a bot. 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