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workqueue: cannot queue hci_cmd_timeout on wq hci4
WARNING: kernel/workqueue.c:2270 at __queue_work+0xd08/0x1150 kernel/workqueue.c:2269, CPU#3: syz.1.2009/13077
Modules linked in:
CPU: 3 UID: 0 PID: 13077 Comm: syz.1.2009 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__queue_work+0xd0c/0x1150 kernel/workqueue.c:2269
Code: 00 00 00 fc ff df 49 8d 94 24 78 01 00 00 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 04 04 00 00 48 8d 3d 98 b4 0c 0f 48 8b 75 18 <67> 48 0f b9 3a e9 2a f7 ff ff e8 85 e2 38 00 90 0f 0b 90 e9 b2 f5
RSP: 0000:ffffc900034efb20 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff110025bf151
RDX: ffff888059ca7178 RSI: ffffffff8a839920 RDI: ffffffff90dc84e0
RBP: ffff888012df8a70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000000 R12: ffff888059ca7000
R13: 1ffff9200069df76 R14: ffffffff81cfe160 R15: 0000000000000001
FS:  000055557835b500(0000) GS:ffff8880d6645000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffde5059008 CR3: 0000000048939000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 call_timer_fn+0x19a/0x670 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers+0x570/0xb30 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/0x50 kernel/time/timer.c:2404
 handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xef/0x150 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+0x56/0xc0 arch/x86/kernel/apic/apic.c:1056
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0033:0x7f4356e50760
Code: 41 5e c3 0f 1f 80 00 00 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <41> 89 fb 44 8d 56 04 4c 8d 0d 92 18 3b 00 89 f0 4c 8d 05 89 f8 3a
RSP: 002b:00007ffcf5fb3a38 EFLAGS: 00000246
RAX: ffffffff82821078 RBX: ffffffff828211b5 RCX: ffffffff82821078
RDX: ffffffff828211b5 RSI: ffffffff828211b5 RDI: 0000000000000012
RBP: 0000000000000000 R08: 00007f4357200000 R09: 00007f4357202000
R10: 000000008282107c R11: 0000000000000012 R12: 00007f4357216038
R13: 000000000006bfca R14: ffffffff828211b5 R15: 00007f4357d45720
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 fc                	add    %bh,%ah
   4:	ff                   	lcall  (bad)
   5:	df 49 8d             	fisttps -0x73(%rcx)
   8:	94                   	xchg   %eax,%esp
   9:	24 78                	and    $0x78,%al
   b:	01 00                	add    %eax,(%rax)
   d:	00 48 89             	add    %cl,-0x77(%rax)
  10:	f9                   	stc
  11:	48 c1 e9 03          	shr    $0x3,%rcx
  15:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
  19:	0f 85 04 04 00 00    	jne    0x423
  1f:	48 8d 3d 98 b4 0c 0f 	lea    0xf0cb498(%rip),%rdi        # 0xf0cb4be
  26:	48 8b 75 18          	mov    0x18(%rbp),%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 2a f7 ff ff       	jmp    0xfffff75e
  34:	e8 85 e2 38 00       	call   0x38e2be
  39:	90                   	nop
  3a:	0f 0b                	ud2
  3c:	90                   	nop
  3d:	e9                   	.byte 0xe9
  3e:	b2 f5                	mov    $0xf5,%dl