From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f77.google.com (mail-oo1-f77.google.com [209.85.161.77]) (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 6DA2114A8B for ; Thu, 25 Dec 2025 02:18:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766629100; cv=none; b=BCAyTCgtLuBuLxD/lsX8+ZuIU9SOxPvmjuBAeD6Rzf+bktWLNvoG6MsbxmCZdMfsI2EvGa1Cvk/SUTnBtrjg2iVG4OEToquJS4+0bmcdPVx6T+Q3VnBf66JcyZQ0aESX4+ju0O3vdqRy9evz0/IclSNWL2ONsf7iDMiVCvuQNig= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766629100; c=relaxed/simple; bh=Yo6hGYy6yQXRjpuNhdxm0QuGJ2+ODHo+Xw7bxn8SIC4=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=iMnRTQs1zwL8ItU2CBgxvl64gQ5fZuHvSmd4PhIYfGnVHcBw/SSrwLBGLAcG3EYDOhq18r61nlO8xtLsrCiZsYj8ddXnATIV6Rj1Ox7TDWLXYjaZF8NWkbkmbMOahrX4TZUykdxG7dCQj/9DIHoMWtRw2aGCQa6DUpUfnhjaccs= 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=209.85.161.77 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-f77.google.com with SMTP id 006d021491bc7-65d12f446c2so8913232eaf.1 for ; Wed, 24 Dec 2025 18:18:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1766629097; x=1767233897; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=hR/sLhAAYEYOBEdG63XFmTVs5K9f3NhsRspN7ogHs0k=; b=tz76BlsDAha6Nde038/Dwg0O4s1FwKem4tnAXoifW/CGOeH0/n7JZkOfg5VYGhWhgF wRcutH+MVYyjjhwsRbzsI80t7aVa5yQnbQwHUkQIZ6hwjPv1Xqmgr3dcOi3v2EispKlq ZBziKlGyza2sUBDnPHQU16Z4D+tilD1i7p1qmHK7EXXOUD2xoJbtmnISO+vu/UuW/4rl Nkq6mzOggqER+wtj4IFXmr4loG/kLtz7qEpks+VkoevKmLZRH6isWVH+WuIBA7qMI6pv b3tv5N328jw1nLWNN+Aq+g+MDXRv9ZDLSGloV8lXedWWbHIuh7Dzw282b0cs6vip6mV7 NzjA== X-Forwarded-Encrypted: i=1; AJvYcCXfmBaf+jsejSkBjlp3aeV1WSjH/EplfmHaxj8cmSzFpv2EUy4OmYrI1iRJVove7bhrIY7RhkDMKdJQccs=@vger.kernel.org X-Gm-Message-State: AOJu0YweYhgmFzNe+pNq1Vhqs4TOIuxhmYYCsMtJH1BNc5KHoVzNtkCQ Y0xDAJrPFxfyN47mEa9891SH+8Lv2DXEr3RbtY6TrjamWQgigQ5D8TQdh3cVoql5dYkRcq2daNl ghfrnn0NmNN8h3sfjxNkXooFEypNxBREAkUUlq9zcXPtv34+aQJmEZTQLik0= X-Google-Smtp-Source: AGHT+IECKwbp9f0L6KhBNNKVbTA5fGCAC0S/t5p2IcVIMclN5E9RoGDp9QVOgoqparaPMDqI5UOM2II9D34rv+gtfckiXd0r2BNT Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:827:b0:65b:32b4:83e7 with SMTP id 006d021491bc7-65d0ea341dcmr8140386eaf.19.1766629097460; Wed, 24 Dec 2025 18:18:17 -0800 (PST) Date: Wed, 24 Dec 2025 18:18:17 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <694c9ee9.050a0220.35954c.0030.GAE@google.com> Subject: [syzbot] [bluetooth?] WARNING in hci_connect_sco 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: d8ba32c5a460 Merge tag 'block-6.19-20251218' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=179a83c2580000 kernel config: https://syzkaller.appspot.com/x/.config?x=513255d80ab78f2b dashboard link: https://syzkaller.appspot.com/bug?extid=5897b3c764f5989ea942 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-d8ba32c5.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ce9be55c4ca6/vmlinux-d8ba32c5.xz kernel image: https://storage.googleapis.com/syzbot-assets/0a47a6667df3/bzImage-d8ba32c5.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+5897b3c764f5989ea942@syzkaller.appspotmail.com ------------[ cut here ]------------ workqueue: cannot queue hci_conn_timeout on wq hci0 WARNING: kernel/workqueue.c:2252 at __queue_work+0xd20/0xf90 kernel/workqueue.c:2250, CPU#0: syz.0.0/5341 Modules linked in: CPU: 0 UID: 0 PID: 5341 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__queue_work+0xd4b/0xf90 kernel/workqueue.c:2250 Code: 83 c5 18 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 86 f8 9e 00 49 8b 75 00 49 81 c7 78 01 00 00 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8d fb RSP: 0018:ffffc9000bd4fb10 EFLAGS: 00010086 RAX: 1ffff11006c5114b RBX: 0000000000000008 RCX: 0000000000100000 RDX: ffff88801168a178 RSI: ffffffff8a596e20 RDI: ffffffff8fa52910 RBP: 0000000000000000 R08: ffff888036288a47 R09: 1ffff11006c51148 R10: dffffc0000000000 R11: ffffed1006c51149 R12: dffffc0000000000 R13: ffff888036288a58 R14: ffffffff8fa52910 R15: ffff88801168a178 FS: 00007f3f80e366c0(0000) GS:ffff88808d22a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff38bb2f52 CR3: 00000000419d7000 CR4: 0000000000352ef0 Call Trace: queue_delayed_work_on+0x18b/0x280 kernel/workqueue.c:2555 hci_connect_sco+0xe9/0x3a0 net/bluetooth/hci_conn.c:1767 sco_connect net/bluetooth/sco.c:339 [inline] sco_sock_connect+0x308/0xad0 net/bluetooth/sco.c:665 __sys_connect_file net/socket.c:2089 [inline] __sys_connect+0x316/0x440 net/socket.c:2108 __do_sys_connect net/socket.c:2114 [inline] __se_sys_connect net/socket.c:2111 [inline] __x64_sys_connect+0x7a/0x90 net/socket.c:2111 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3f7ff8f7c9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3f80e36038 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f3f801e6090 RCX: 00007f3f7ff8f7c9 RDX: 0000000000000008 RSI: 0000200000000100 RDI: 0000000000000006 RBP: 00007f3f80013f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f3f801e6128 R14: 00007f3f801e6090 R15: 00007ffdb2852538 ---------------- Code disassembly (best guess): 0: 83 c5 18 add $0x18,%ebp 3: 4c 89 e8 mov %r13,%rax 6: 48 c1 e8 03 shr $0x3,%rax a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) f: 74 08 je 0x19 11: 4c 89 ef mov %r13,%rdi 14: e8 86 f8 9e 00 call 0x9ef89f 19: 49 8b 75 00 mov 0x0(%r13),%rsi 1d: 49 81 c7 78 01 00 00 add $0x178,%r15 24: 4c 89 f7 mov %r14,%rdi 27: 4c 89 fa mov %r15,%rdx * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 48 83 c4 58 add $0x58,%rsp 33: 5b pop %rbx 34: 41 5c pop %r12 36: 41 5d pop %r13 38: 41 5e pop %r14 3a: 41 5f pop %r15 3c: 5d pop %rbp 3d: e9 .byte 0xe9 3e: 8d (bad) 3f: fb sti --- 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