------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci2
WARNING: kernel/workqueue.c:2437 at __queue_work+0xdfc/0x1360 kernel/workqueue.c:2436, CPU#0: swapper/0/0
Modules linked in:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G             L       syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:__queue_work+0xe1a/0x1360 kernel/workqueue.c:2436
Code: 28 78 01 00 00 4c 8d 35 64 51 11 10 48 89 f8 48 c1 e8 03 80 3c 18 00 74 05 e8 b2 f3 b0 00 49 8b 77 18 4c 89 f7 48 8b 54 24 28 <67> 48 0f b9 3a 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8
RSP: 0000:ffffc90000007be8 EFLAGS: 00010046
RAX: 1ffff1100727794e RBX: dffffc0000000000 RCX: ffffffff8fc8efc0
RDX: ffff888054585178 RSI: ffffffff8af08c20 RDI: ffffffff91a04590
RBP: 0000000000010000 R08: 0000000000000100 R09: 1ffffffff233adf7
R10: dffffc0000000000 R11: ffffffff818efd60 R12: ffff8880545851c0
R13: 0000000000000008 R14: ffffffff91a04590 R15: ffff8880393bca58
FS:  0000000000000000(0000) GS:ffff888123620000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f53c3edc CR3: 00000000595d6000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1749
 expire_timers kernel/time/timer.c:1795 [inline]
 __run_timers kernel/time/timer.c:2375 [inline]
 __run_timer_base+0x67e/0x8b0 kernel/time/timer.c:2387
 run_timer_base kernel/time/timer.c:2396 [inline]
 run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2406
 handle_softirqs+0x265/0x8d0 kernel/softirq.c:669
 __do_softirq kernel/softirq.c:703 [inline]
 invoke_softirq kernel/softirq.c:542 [inline]
 __irq_exit_rcu+0xc6/0x220 kernel/softirq.c:786
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:809
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:finish_task_switch+0x413/0xc60 kernel/sched/core.c:5434
Code: 04 00 00 41 c7 84 24 20 0e 00 00 00 00 00 00 e9 db 06 00 00 49 83 c4 48 4c 89 e7 e8 a7 3a 6e 0a e8 b2 80 3a 00 fb 4c 8b 65 c8 <49> 8d bc 24 18 17 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0000:ffffffff8fc07a40 EFLAGS: 00000202
RAX: 00000000008b2419 RBX: ffff8880b823d120 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8e6a2302 RDI: ffffffff8c8e8c80
RBP: ffffffff8fc07a90 R08: ffffffff919d6fbf R09: 1ffffffff233adf7
R10: dffffc0000000000 R11: fffffbfff233adf8 R12: ffffffff8fc8efc0
R13: ffffffff8fc8efc0 R14: dffffc0000000000 R15: 1ffff11017047a24
 context_switch kernel/sched/core.c:5586 [inline]
 __schedule+0x17e5/0x5820 kernel/sched/core.c:7382
 schedule_idle+0x51/0x90 kernel/sched/core.c:7500
 do_idle+0x4ad/0x540 kernel/sched/idle.c:384
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
 rest_init+0x378/0x3a0 init/main.c:789
 start_kernel+0x392/0x3e0 init/main.c:1247
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x137/0x1b0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x157
 </TASK>
----------------
Code disassembly (best guess):
   0:	28 78 01             	sub    %bh,0x1(%rax)
   3:	00 00                	add    %al,(%rax)
   5:	4c 8d 35 64 51 11 10 	lea    0x10115164(%rip),%r14        # 0x10115170
   c:	48 89 f8             	mov    %rdi,%rax
   f:	48 c1 e8 03          	shr    $0x3,%rax
  13:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  17:	74 05                	je     0x1e
  19:	e8 b2 f3 b0 00       	call   0xb0f3d0
  1e:	49 8b 77 18          	mov    0x18(%r15),%rsi
  22:	4c 89 f7             	mov    %r14,%rdi
  25:	48 8b 54 24 28       	mov    0x28(%rsp),%rdx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	4c 89 f8             	mov    %r15,%rax
  32:	48 c1 e8 03          	shr    $0x3,%rax
  36:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  3a:	74 08                	je     0x44
  3c:	4c 89 ff             	mov    %r15,%rdi
  3f:	e8                   	.byte 0xe8