------------[ cut here ]------------
WARNING: CPU: 0 PID: 9623 at kernel/workqueue.c:1438 __queue_work+0xe16/0xfc0
Modules linked in:
CPU: 0 PID: 9623 Comm: syz-executor.3 Not tainted 6.1.15-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:__queue_work+0xe16/0xfc0 kernel/workqueue.c:1438
Code: 8b 3c 24 e8 6c e5 86 00 e9 ac fc ff ff e8 a2 da 30 00 89 ee 48 c7 c7 00 50 dd 8c e8 24 cc 09 03 e9 f1 fb ff ff e8 8a da 30 00 <0f> 0b 48 83 c4 48 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 74 da 30 00
RSP: 0018:ffffc90000007b00 EFLAGS: 00010046
RAX: ffffffff81594f96 RBX: 00000000000b0012 RCX: ffff8880287157c0
RDX: 0000000000000101 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000010000 R08: ffffffff815a30f5 R09: fffffbfff1ca4fce
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000008 R14: ffff88807a20d000 R15: 1ffff92000000f74
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f388760950 CR3: 0000000057559000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x1e5/0x800 kernel/time/timer.c:1474
 expire_timers kernel/time/timer.c:1514 [inline]
 __run_timers+0x6a8/0x890 kernel/time/timer.c:1790
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803
 __do_softirq+0x304/0xb09 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x91/0xb0 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+0xf2/0x1c0 kernel/sched/core.c:6863
Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 97 00 00 00 bf 01 00 00 00 e8 59 7f d4 f6 e8 a4 30 07 f7 fb bf 01 00 00 00 <e8> 89 b6 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 39 89 56 f7 48
RSP: 0018:ffffc90005c77260 EFLAGS: 00000286
RAX: e9b7ecac7f553600 RBX: 1ffff92000b8ee54 RCX: ffffffff816a8a3a
RDX: dffffc0000000000 RSI: ffffffff8aebcf60 RDI: 0000000000000001
RBP: ffffc90005c77320 R08: dffffc0000000000 R09: fffffbfff202ea54
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000b8ee4c
R13: 1ffff92000b8ee50 R14: ffffc90005c77280 R15: dffffc0000000000
 irqentry_exit+0x53/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x2a8/0x620 kernel/locking/lockdep.c:5672
Code: 2b 00 74 08 4c 89 f7 e8 46 15 76 00 f6 44 24 61 02 0f 85 d1 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90005c773e0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000b8ee88 RCX: ffffffff9196d003
RDX: dffffc0000000000 RSI: ffffffff8aebe0e0 RDI: ffffffff8b3d0400
RBP: ffffc90005c77528 R08: dffffc0000000000 R09: fffffbfff2242855
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000b8ee84
R13: dffffc0000000000 R14: ffffc90005c77440 R15: 0000000000000246
 __flush_workqueue+0x170/0x1610 kernel/workqueue.c:2809
 drain_workqueue+0xc5/0x390 kernel/workqueue.c:2974
 hci_dev_close_sync+0x435/0x1000 net/bluetooth/hci_sync.c:4817
 hci_dev_do_close net/bluetooth/hci_core.c:554 [inline]
 hci_unregister_dev+0x1c6/0x470 net/bluetooth/hci_core.c:2702
 vhci_release+0x7f/0xd0 drivers/bluetooth/hci_vhci.c:568
 __fput+0x3b7/0x890 fs/file_table.c:320
 task_work_run+0x246/0x300 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x671/0x2280 kernel/exit.c:867
 do_group_exit+0x202/0x2b0 kernel/exit.c:1012
 get_signal+0x16f7/0x17d0 kernel/signal.c:2858
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x60/0x2c0 kernel/entry/common.c:296
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbb8dc8c0f9
Code: Unable to access opcode bytes at 0x7fbb8dc8c0cf.
RSP: 002b:00007fbb8e9d3168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: 0000000000000012 RBX: 00007fbb8ddabf80 RCX: 00007fbb8dc8c0f9
RDX: 0000000000000012 RSI: 0000000020000040 RDI: 0000000000000005
RBP: 00007fbb8dce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffdc0d592f R14: 00007fbb8e9d3300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 f5                	mov    %esi,%ebp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	eb 0d                	jmp    0x15
   8:	48 f7 03 08 00 00 00 	testq  $0x8,(%rbx)
   f:	0f 84 97 00 00 00    	je     0xac
  15:	bf 01 00 00 00       	mov    $0x1,%edi
  1a:	e8 59 7f d4 f6       	callq  0xf6d47f78
  1f:	e8 a4 30 07 f7       	callq  0xf70730c8
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 89 b6 ff ff       	callq  0xffffb6b8 <-- trapping instruction
  2f:	43 80 7c 3d 00 00    	cmpb   $0x0,0x0(%r13,%r15,1)
  35:	74 08                	je     0x3f
  37:	4c 89 f7             	mov    %r14,%rdi
  3a:	e8 39 89 56 f7       	callq  0xf7568978
  3f:	48                   	rex.W