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workqueue: cannot queue hci_cmd_timeout on wq hci3
WARNING: CPU: 3 PID: 34 at kernel/workqueue.c:2255 __queue_work+0xd03/0x1160 kernel/workqueue.c:2254
Modules linked in:
CPU: 3 UID: 0 PID: 34 Comm: kworker/3:0 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: events free_ipc
RIP: 0010:__queue_work+0xd03/0x1160 kernel/workqueue.c:2254
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 4b 04 00 00 48 8b 75 18 4c 89 fa 48 c7 c7 a0 00 ac 8b e8 be 1e f7 ff 90 <0f> 0b 90 90 e9 2f f7 ff ff e8 ef 78 38 00 90 0f 0b 90 e9 b4 f5 ff
RSP: 0018:ffffc900006f8be8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817a3358
RDX: ffff88801eaac880 RSI: ffffffff817a3365 RDI: 0000000000000001
RBP: ffff88802c8d8970 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff920000df18f
R13: 0000000000000101 R14: ffffffff81832460 R15: ffff88803be47978
FS:  0000000000000000(0000) GS:ffff8880d69b9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563cc4e9dcf8 CR3: 0000000028f24000 CR4: 0000000000352ef0
Call Trace:
 <IRQ>
 call_timer_fn+0x197/0x620 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1793 [inline]
 __run_timers+0x569/0x960 kernel/time/timer.c:2372
 __run_timer_base kernel/time/timer.c:2384 [inline]
 __run_timer_base kernel/time/timer.c:2376 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2393
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2403
 handle_softirqs+0x216/0x8e0 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 46 5c 01 f6 48 89 df e8 2e b0 01 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 05 af f1 f5 65 8b 05 0e 0c 40 08 85 c0 74 16 5b
RSP: 0018:ffffc900006df758 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff9b044298 RCX: 0000000000000006
RDX: 0000000000000000 RSI: ffffffff8de50328 RDI: ffffffff8c162900
RBP: 0000000000000202 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90ab4c97 R11: ffffffff9b044298 R12: 0000000000000001
R13: ffff888033e94c98 R14: ffffffff9b044290 R15: 1ffff920000dbef2
 debug_object_activate+0x2ec/0x4c0 lib/debugobjects.c:836
 debug_rcu_head_queue kernel/rcu/rcu.h:236 [inline]
 __call_rcu_common.constprop.0+0x35/0xa10 kernel/rcu/tree.c:3108
 security_inode_free+0xa4/0x170 security/security.c:1735
 __destroy_inode+0x201/0x730 fs/inode.c:371
 destroy_inode+0x91/0x1b0 fs/inode.c:394
 evict+0x5b4/0x920 fs/inode.c:834
 iput_final fs/inode.c:1897 [inline]
 iput fs/inode.c:1923 [inline]
 iput+0x521/0x880 fs/inode.c:1909
 proc_invalidate_siblings_dcache+0x288/0x760 fs/proc/inode.c:152
 proc_sys_invalidate_dcache fs/proc/proc_sysctl.c:289 [inline]
 start_unregistering fs/proc/proc_sysctl.c:316 [inline]
 drop_sysctl_table+0x1d0/0x5f0 fs/proc/proc_sysctl.c:1517
 unregister_sysctl_table fs/proc/proc_sysctl.c:1542 [inline]
 unregister_sysctl_table+0x41/0x60 fs/proc/proc_sysctl.c:1534
 retire_ipc_sysctls+0x5c/0x90 ipc/ipc_sysctl.c:310
 free_ipc_ns ipc/namespace.c:160 [inline]
 free_ipc+0x1a1/0x2b0 ipc/namespace.c:181
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	f5                   	cmc
   1:	53                   	push   %rbx
   2:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
   7:	48 89 fb             	mov    %rdi,%rbx
   a:	48 83 c7 18          	add    $0x18,%rdi
   e:	e8 46 5c 01 f6       	call   0xf6015c59
  13:	48 89 df             	mov    %rbx,%rdi
  16:	e8 2e b0 01 f6       	call   0xf601b049
  1b:	f7 c5 00 02 00 00    	test   $0x200,%ebp
  21:	75 23                	jne    0x46
  23:	9c                   	pushf
  24:	58                   	pop    %rax
  25:	f6 c4 02             	test   $0x2,%ah
  28:	75 37                	jne    0x61
* 2a:	bf 01 00 00 00       	mov    $0x1,%edi <-- trapping instruction
  2f:	e8 05 af f1 f5       	call   0xf5f1af39
  34:	65 8b 05 0e 0c 40 08 	mov    %gs:0x8400c0e(%rip),%eax        # 0x8400c49
  3b:	85 c0                	test   %eax,%eax
  3d:	74 16                	je     0x55
  3f:	5b                   	pop    %rbx