------------[ cut here ]------------
WARNING: CPU: 0 PID: 11070 at kernel/workqueue.c:1438 __queue_work+0xe36/0x1200 kernel/workqueue.c:1438
Modules linked in:
CPU: 0 PID: 11070 Comm: syz-executor.2 Not tainted 6.0.0-syzkaller-02770-g79d878f7ad8e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:__queue_work+0xe36/0x1200 kernel/workqueue.c:1438
Code: e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 22 77 7a 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 73 66 2d 00 85 db 75 42 e8 aa 69 2d 00 <0f> 0b e9 4a f8 ff ff e8 9e 69 2d 00 0f 0b e9 dc f7 ff ff e8 92 69
RSP: 0018:ffffc90000007cb8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000100 RCX: 0000000000000100
RDX: ffff88801eb8bb00 RSI: ffffffff814dabc6 RDI: 0000000000000005
RBP: ffffc90000007d70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000001 R12: ffff88807bf3cb30
R13: 1ffff92000000fa8 R14: ffffffff814e0720 R15: ffff888016ffd800
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f17aaa8b378 CR3: 000000000bc8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474
 expire_timers kernel/time/timer.c:1514 [inline]
 __run_timers.part.0+0x4a3/0xa80 kernel/time/timer.c:1790
 __run_timers kernel/time/timer.c:1768 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
 __do_softirq+0x1d0/0x9c8 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:6807
Code: 55 53 65 48 8b 1c 25 80 6f 02 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 52 cc cc f7 e8 3d 8b fc f7 fb bf 01 00 00 00 <e8> 92 a0 ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 f0 b6 cc
RSP: 0018:ffffc900031cf5d8 EFLAGS: 00000202
RAX: 000000000000369d RBX: ffff88801eb8bb00 RCX: 1ffffffff212bcee
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed1003d71760 R08: 0000000000000001 R09: ffffffff90903a37
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 irqentry_exit+0x31/0x80 kernel/entry/common.c:428
 asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:654
RIP: 0010:lock_acquire+0x1ef/0x570 kernel/locking/lockdep.c:5634
Code: f6 a3 7e 83 f8 01 0f 85 e8 02 00 00 9c 58 f6 c4 02 0f 85 fb 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900031cf6a0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000639ed6 RCX: 0000000000000001
RDX: 1ffff11003d718ae RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000001 R09: ffffffff90a8c997
R10: fffffbfff2151932 R11: 1ffffffff203581c R12: 0000000000000000
R13: 0000000000000000 R14: ffff888016ffd938 R15: 0000000000000000
 __flush_workqueue+0x110/0x13a0 kernel/workqueue.c:2809
 drain_workqueue+0x1a5/0x3c0 kernel/workqueue.c:2974
 hci_dev_close_sync+0x2ef/0x1200 net/bluetooth/hci_sync.c:4809
 hci_dev_do_close+0x2d/0x70 net/bluetooth/hci_core.c:554
 hci_unregister_dev+0x17f/0x4e0 net/bluetooth/hci_core.c:2702
 vhci_release+0x7c/0xf0 drivers/bluetooth/hci_vhci.c:568
 __fput+0x277/0x9d0 fs/file_table.c:320
 task_work_run+0xdd/0x1a0 kernel/task_work.c:177
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xad5/0x29b0 kernel/exit.c:795
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x2387/0x2610 kernel/signal.c:2857
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:307
 exc_page_fault+0xbc/0x170 arch/x86/mm/fault.c:1557
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f4d21c5aa85
Code: Unable to access opcode bytes at 0x7f4d21c5aa5b.
RSP: 002b:00007fff1159d9d8 EFLAGS: 00010202
RAX: ffffffffffffffe8 RBX: 0000000000000000 RCX: 00007f4d21c3e403
RDX: 0000000000000000 RSI: 0000000000000018 RDI: 0000555556eaf6e0
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000555556eaf400
R10: 0000555556eaf6d0 R11: 0000000000000202 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007fff1159dac0
 </TASK>
----------------
Code disassembly (best guess):
   0:	55                   	push   %rbp
   1:	53                   	push   %rbx
   2:	65 48 8b 1c 25 80 6f 	mov    %gs:0x26f80,%rbx
   9:	02 00
   b:	48 89 dd             	mov    %rbx,%rbp
   e:	48 c1 ed 03          	shr    $0x3,%rbp
  12:	48 01 c5             	add    %rax,%rbp
  15:	bf 01 00 00 00       	mov    $0x1,%edi
  1a:	e8 52 cc cc f7       	callq  0xf7cccc71
  1f:	e8 3d 8b fc f7       	callq  0xf7fc8b61
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 92 a0 ff ff       	callq  0xffffa0c1 <-- trapping instruction
  2f:	9c                   	pushfq
  30:	58                   	pop    %rax
  31:	fa                   	cli
  32:	f6 c4 02             	test   $0x2,%ah
  35:	75 27                	jne    0x5e
  37:	bf 01 00 00 00       	mov    $0x1,%edi
  3c:	e8                   	.byte 0xe8
  3d:	f0 b6 cc             	lock mov $0xcc,%dh