------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2257 at 0x0, CPU#1: syz.2.237/6915
Modules linked in:
CPU: 1 UID: 0 PID: 6915 Comm: syz.2.237 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+0xca1/0x10e0 kernel/workqueue.c:2256
Code: 78 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 0c 04 00 00 48 8d 3d 23 95 04 0f 48 8b 75 18 <67> 48 0f b9 3a e9 90 f7 ff ff e8 30 b9 39 00 90 0f 0b 90 e9 15 f6
RSP: 0000:ffffc900016dfb20 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff11006bee132
RDX: ffff88802caa5178 RSI: ffffffff8a5442e0 RDI: ffffffff9088bc10
RBP: ffff888035f70978 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 00000000ffffffff R12: 1ffff920002dbf76
R13: ffffffff81843830 R14: 0000000080000100 R15: ffff88802caa5000
FS:  000055555beef500(0000) GS:ffff8880d6a9c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5eed375440 CR3: 00000000522fc000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 call_timer_fn+0x19a/0x5a0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers+0x569/0xae0 kernel/time/timer.c:2373
 __run_timer_base kernel/time/timer.c:2385 [inline]
 __run_timer_base kernel/time/timer.c:2377 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2394
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2404
 handle_softirqs+0x219/0x8b0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0x57/0xc0 arch/x86/kernel/apic/apic.c:1056
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0033:0x7f8e6364e814
Code: 41 5e 41 5f c3 90 48 83 ec 18 89 fe 31 c0 bf e7 00 00 00 e8 ae 0f 14 00 c7 44 24 0c 00 00 00 00 66 0f 1f 44 00 00 8b 44 24 0c <83> c0 01 89 44 24 0c eb f3 0f 1f 00 55 53 48 89 fb 48 81 ec d8 00
RSP: 002b:00007ffc025ee400 EFLAGS: 00000202
RAX: 000000003fb12f86 RBX: 0000000000000000 RCX: 00007f8e6378f7c9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffc025ee45c R08: 0000001e025ee4ef R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000030
R13: 00000000000927c0 R14: 00000000000111d3 R15: 00007ffc025ee4b0
 </TASK>
----------------
Code disassembly (best guess):
   0:	78 01                	js     0x3
   2:	00 00                	add    %al,(%rax)
   4:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   b:	fc ff df
   e:	48 89 f9             	mov    %rdi,%rcx
  11:	48 c1 e9 03          	shr    $0x3,%rcx
  15:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  19:	0f 85 0c 04 00 00    	jne    0x42b
  1f:	48 8d 3d 23 95 04 0f 	lea    0xf049523(%rip),%rdi        # 0xf049549
  26:	48 8b 75 18          	mov    0x18(%rbp),%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 90 f7 ff ff       	jmp    0xfffff7c4
  34:	e8 30 b9 39 00       	call   0x39b969
  39:	90                   	nop
  3a:	0f 0b                	ud2
  3c:	90                   	nop
  3d:	e9                   	.byte 0xe9
  3e:	15                   	.byte 0x15
  3f:	f6                   	.byte 0xf6