------------[ cut here ]------------
workqueue: cannot queue hci_conn_timeout on wq hci0
WARNING: kernel/workqueue.c:2298 at __queue_work+0xd67/0x1010, CPU#1: ktimers/1/30
Modules linked in:
CPU: 1 UID: 0 PID: 30 Comm: ktimers/1 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__queue_work+0xd87/0x1010
Code: 01 00 00 4c 8d 35 19 62 00 0e 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 43 23 a1 00 49 8b 75 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 c3 cc cc
RSP: 0018:ffffc90000a4f9b0 EFLAGS: 00010046
RAX: 1ffff1102eeef95b RBX: 0000000000000008 RCX: ffff8881604d9d80
RDX: ffff888188b82168 RSI: ffffffff8a1cb2c0 RDI: ffffffff8f8da4e0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000100
R10: dffffc0000000000 R11: ffffffff818d4940 R12: dffffc0000000000
R13: ffff88817777cad8 R14: ffffffff8f8da4e0 R15: ffff888188b82168
FS:  0000000000000000(0000) GS:ffff8882a9f1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3011eff8 CR3: 000000002ece8000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 call_timer_fn+0x192/0x5e0
 __run_timer_base+0x764/0x9f0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x1de/0x6d0
 run_ktimerd+0x69/0x100
 smpboot_thread_fn+0x541/0xa50
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
