linux-kernel - [syzbot] upstream test error: WARNING in __queue

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Date:   Mon, 29 Aug 2022 19:07:36 -0700
From:   syzbot <syzbot+243b7d89777f90f7613b@...kaller.appspotmail.com>
To:     jiangshanlai@...il.com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, tj@...nel.org
Subject: [syzbot] upstream test error: WARNING in __queue_work

Hello,

syzbot found the following issue on:

HEAD commit:    4c612826bec1 Merge tag 'net-6.0-rc3' of git://git.kernel.o..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=120ebce7080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=312be25752c7fe30
dashboard link: https://syzkaller.appspot.com/bug?extid=243b7d89777f90f7613b
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+243b7d89777f90f7613b@...kaller.appspotmail.com

Bluetooth: hci0: command 0x0409 tx timeout
------------[ cut here ]------------
WARNING: CPU: 0 PID: 52 at kernel/workqueue.c:1438 __queue_work+0xe3f/0x1210 kernel/workqueue.c:1438
Modules linked in:
CPU: 0 PID: 52 Comm: kworker/0:2 Not tainted 6.0.0-rc2-syzkaller-00159-g4c612826bec1 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: events hci_cmd_timeout
RIP: 0010:__queue_work+0xe3f/0x1210 kernel/workqueue.c:1438
Code: e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 29 09 79 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 9a 5f 2d 00 85 db 75 42 e8 d1 62 2d 00 <0f> 0b e9 41 f8 ff ff e8 c5 62 2d 00 0f 0b e9 d3 f7 ff ff e8 b9 62
RSP: 0018:ffffc90000947c60 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffff88802c83e200 RCX: 0000000000000000
RDX: ffff88801538a180 RSI: ffffffff814dd75f RDI: ffff88802c83e208
RBP: 0000000000000008 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000200000 R11: 0000000000000000 R12: ffff8880266b4c70
R13: 0000000000000000 R14: ffff888014b1e000 R15: ffff888014b1e000
FS:  0000000000000000(0000) GS:ffff88802c800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0003d1e80 CR3: 00000000155b2000 CR4: 0000000000150ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queue_work_on+0xee/0x110 kernel/workqueue.c:1545
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>


---
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