------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: CPU: 3 PID: 1181 at kernel/workqueue.c:2257 __queue_work+0xc9c/0x10f0 kernel/workqueue.c:2256
Modules linked in:
CPU: 3 UID: 0 PID: 1181 Comm: kworker/u32:10 Not tainted 6.16.0-rc5-syzkaller-00038-g733923397fd9 #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: iou_exit io_ring_exit_work
RIP: 0010:__queue_work+0xc9c/0x10f0 kernel/workqueue.c:2256
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 28 04 00 00 48 8b 75 18 4c 89 f2 48 c7 c7 c0 07 ac 8b e8 f5 16 f7 ff 90 <0f> 0b 90 90 e9 96 f7 ff ff e8 e6 1d 38 00 90 0f 0b 90 e9 1b f6 ff
RSP: 0018:ffffc900006f8be8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817af1a8
RDX: ffff888028d24880 RSI: ffffffff817af1b5 RDI: 0000000000000001
RBP: ffff888024b20970 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff920000df18f
R13: 0000000080000100 R14: ffff888031fed978 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880d6a16000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555578d64808 CR3: 00000000509c1000 CR4: 0000000000352ef0
Call Trace:
 <IRQ>
 call_timer_fn+0x19a/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+0x219/0x8e0 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:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0x45/0x2f0 kernel/locking/lockdep.c:5882
Code: f9 17 38 12 48 89 44 24 10 31 c0 0f 1f 44 00 00 65 8b 05 12 18 38 12 83 f8 07 0f 87 38 02 00 00 89 c0 48 0f a3 05 1b f7 10 0f <0f> 82 b1 01 00 00 8b 3d 03 29 11 0f 85 ff 0f 84 25 01 00 00 65 8b
RSP: 0018:ffffc9000644f858 EFLAGS: 00000297
RAX: 0000000000000003 RBX: ffffffff8e5c4e80 RCX: 0000000028a93ca3
RDX: 0000000000000000 RSI: ffffffff822c0110 RDI: ffffffff8e5c4e80
RBP: dffffc0000000000 R08: 35d7881cfb5f71db R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff822c0110
R13: ffff88801b849900 R14: 0000000000000000 R15: ffffc9000644f930
 rcu_lock_release include/linux/rcupdate.h:341 [inline]
 rcu_read_unlock include/linux/rcupdate.h:871 [inline]
 percpu_ref_put_many include/linux/percpu-refcount.h:337 [inline]
 percpu_ref_put include/linux/percpu-refcount.h:351 [inline]
 obj_cgroup_put include/linux/memcontrol.h:782 [inline]
 obj_cgroup_put include/linux/memcontrol.h:779 [inline]
 __memcg_slab_free_hook+0xd5/0x5d0 mm/memcontrol.c:3221
 memcg_slab_free_hook mm/slub.c:2206 [inline]
 slab_free mm/slub.c:4640 [inline]
 kfree+0x389/0x4d0 mm/slub.c:4842
 io_remove_buffers_legacy+0x1f0/0x360 io_uring/kbuf.c:400
 io_put_bl io_uring/kbuf.c:411 [inline]
 io_destroy_buffers+0x1d1/0x1f0 io_uring/kbuf.c:430
 io_ring_ctx_free io_uring/io_uring.c:2736 [inline]
 io_ring_exit_work+0x81d/0x1120 io_uring/io_uring.c:2972
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3321 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
 kthread+0x3c5/0x780 kernel/kthread.c:464
 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), 2 bytes skipped:
   0:	38 12                	cmp    %dl,(%rdx)
   2:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
   7:	31 c0                	xor    %eax,%eax
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	65 8b 05 12 18 38 12 	mov    %gs:0x12381812(%rip),%eax        # 0x12381827
  15:	83 f8 07             	cmp    $0x7,%eax
  18:	0f 87 38 02 00 00    	ja     0x256
  1e:	89 c0                	mov    %eax,%eax
  20:	48 0f a3 05 1b f7 10 	bt     %rax,0xf10f71b(%rip)        # 0xf10f743
  27:	0f
* 28:	0f 82 b1 01 00 00    	jb     0x1df <-- trapping instruction
  2e:	8b 3d 03 29 11 0f    	mov    0xf112903(%rip),%edi        # 0xf112937
  34:	85 ff                	test   %edi,%edi
  36:	0f 84 25 01 00 00    	je     0x161
  3c:	65                   	gs
  3d:	8b                   	.byte 0x8b