------------[ cut here ]------------
WARNING: CPU: 3 PID: 29614 at net/bluetooth/hci_conn.c:567 hci_conn_timeout+0x11a/0x210 net/bluetooth/hci_conn.c:567
Modules linked in:
CPU: 3 UID: 0 PID: 29614 Comm: kworker/u33:1 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: hci1 hci_conn_timeout
RIP: 0010:hci_conn_timeout+0x11a/0x210 net/bluetooth/hci_conn.c:567
Code: 00 e8 8a 49 61 f7 4c 89 f1 4c 89 e2 48 c7 c6 a0 8d d8 8c 48 c7 c7 d8 f8 7e 90 e8 f1 ff 7f fa e9 4d ff ff ff e8 67 49 61 f7 90 <0f> 0b 90 e8 5e 49 61 f7 48 8d bb f5 f6 ff ff 48 b8 00 00 00 00 00
RSP: 0018:ffffc900038d7c20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88800b768948 RCX: ffffffff8a5a8a5f
RDX: ffff888070032480 RSI: ffffffff8a5a8b09 RDI: 0000000000000005
RBP: 00000000ffffffff R08: 0000000000000005 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000002bc1 R12: ffff88800b768000
R13: 0000000000000000 R14: ffffffff90838934 R15: ffffc900038d7d00
FS:  0000000000000000(0000) GS:ffff888097ae7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000800d0018 CR3: 00000000731f5000 CR4: 0000000000352ef0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3263
 process_scheduled_works kernel/workqueue.c:3346 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3427
 kthread+0x3c2/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>