------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci4
WARNING: CPU: 1 PID: 17867 at kernel/workqueue.c:2258 __queue_work+0xd38/0xfb0 kernel/workqueue.c:2256
Modules linked in:
CPU: 1 UID: 0 PID: 17867 Comm: syz.1.3024 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__queue_work+0xd38/0xfb0 kernel/workqueue.c:2256
Code: 42 80 3c 20 00 74 08 4c 89 ef e8 83 d9 9b 00 49 8b 75 00 49 81 c7 78 01 00 00 48 c7 c7 20 eb 69 8b 4c 89 fa e8 b9 31 f9 ff 90 <0f> 0b 90 90 e9 1a f5 ff ff e8 aa 15 36 00 90 0f 0b 90 e9 dd fc ff
RSP: 0018:ffffc90000a08b10 EFLAGS: 00010046
RAX: 8542f1b6a81c2200 RBX: 0000000000000100 RCX: ffff88802b6b0000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 1ffff11003be2d38 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba684 R12: dffffc0000000000
R13: ffff88805a690a80 R14: 0000000000000008 R15: ffff88801df16978
FS:  0000000000000000(0000) GS:ffff88812622e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c386a31 CR3: 000000006827e000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1794 [inline]
 __run_timers kernel/time/timer.c:2373 [inline]
 __run_timer_base+0x646/0x860 kernel/time/timer.c:2385
 run_timer_base kernel/time/timer.c:2394 [inline]
 run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2404
 handle_softirqs+0x286/0x870 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__fput+0xa1/0xa70 fs/file_table.c:447
Code: 24 20 4c 8d 7b 60 4c 89 f8 48 c1 e8 03 48 89 44 24 30 42 80 3c 28 00 74 08 4c 89 ff e8 78 96 ee ff 4c 89 7c 24 38 4c 8b 7b 60 <48> 8d 6b 40 48 89 e8 48 c1 e8 03 48 89 44 24 10 42 0f b6 04 28 84
RSP: 0018:ffffc9001a0e7990 EFLAGS: 00000246
RAX: 1ffff110050ee6e4 RBX: ffff8880287736c0 RCX: ffff88802b6b0000
RDX: 0000000000000000 RSI: ffffffff8d8fc68c RDI: ffff8880287736c0
RBP: ffffc9001a0e7ad0 R08: ffffffff8f7d2477 R09: 1ffffffff1efa48e
R10: dffffc0000000000 R11: ffffffff82374260 R12: ffff888028773748
R13: dffffc0000000000 R14: 1ffff110050ee6e9 R15: ffff888054791d80
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x6b5/0x2300 kernel/exit.c:966
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1107
 get_signal+0x1285/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0xa0/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x72/0x130 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fadca18f749
Code: Unable to access opcode bytes at 0x7fadca18f71f.
RSP: 002b:00007fadcafe90e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fadca3e5fa8 RCX: 00007fadca18f749
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fadca3e5fa8
RBP: 00007fadca3e5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fadca3e6038 R14: 00007fff375cd280 R15: 00007fff375cd368
 </TASK>
----------------
Code disassembly (best guess):
   0:	24 20                	and    $0x20,%al
   2:	4c 8d 7b 60          	lea    0x60(%rbx),%r15
   6:	4c 89 f8             	mov    %r15,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
  12:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  17:	74 08                	je     0x21
  19:	4c 89 ff             	mov    %r15,%rdi
  1c:	e8 78 96 ee ff       	call   0xffee9699
  21:	4c 89 7c 24 38       	mov    %r15,0x38(%rsp)
  26:	4c 8b 7b 60          	mov    0x60(%rbx),%r15
* 2a:	48 8d 6b 40          	lea    0x40(%rbx),%rbp <-- trapping instruction
  2e:	48 89 e8             	mov    %rbp,%rax
  31:	48 c1 e8 03          	shr    $0x3,%rax
  35:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  3a:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
  3f:	84                   	.byte 0x84