Bluetooth: hci2: unexpected event for opcode 0x1408
Bluetooth: hci2: unexpected event for opcode 0x1408
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WARNING: CPU: 0 PID: 5961 at net/bluetooth/hci_conn.c:567 hci_conn_timeout+0x11a/0x210 net/bluetooth/hci_conn.c:567
Modules linked in:
CPU: 0 UID: 0 PID: 5961 Comm: kworker/u33:3 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
Workqueue: hci2 hci_conn_timeout
RIP: 0010:hci_conn_timeout+0x11a/0x210 net/bluetooth/hci_conn.c:567
Code: 00 e8 1a b5 68 f7 4c 89 f1 4c 89 e2 48 c7 c6 40 96 b7 8c 48 c7 c7 c0 5b 5b 90 e8 c1 0b 82 fa e9 4d ff ff ff e8 f7 b4 68 f7 90 <0f> 0b 90 e8 ee b4 68 f7 48 8d bb f5 f6 ff ff 48 b8 00 00 00 00 00
RSP: 0018:ffffc9000337fc30 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888025010948 RCX: ffffffff8a525d8f
RDX: ffff888027462480 RSI: ffffffff8a525e39 RDI: 0000000000000005
RBP: 00000000ffffffff R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000000 R12: ffff888025010000
R13: 0000000000000000 R14: ffffffff905febf4 R15: ffffc9000337fd10
FS:  0000000000000000(0000) GS:ffff8880d6e67000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c347dc3 CR3: 000000005aa16000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x56d/0x730 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>