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workqueue: cannot queue hci_cmd_timeout on wq hci2
WARNING: CPU: 1 PID: 8556 at kernel/workqueue.c:2258 __queue_work+0xd62/0xfe0 kernel/workqueue.c:2256
Modules linked in:
CPU: 1 UID: 0 PID: 8556 Comm: syz.4.651 Not tainted 6.16.0-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__queue_work+0xd62/0xfe0 kernel/workqueue.c:2256
Code: 42 80 3c 20 00 74 08 4c 89 ef e8 09 2c 95 00 49 8b 75 00 49 81 c7 78 01 00 00 48 c7 c7 e0 e8 89 8b 4c 89 fa e8 4f 34 f9 ff 90 <0f> 0b 90 90 e9 f1 f4 ff ff e8 a0 44 35 00 90 0f 0b 90 e9 dd fc ff
RSP: 0018:ffffc90000a08b08 EFLAGS: 00010046
RAX: 15086240a2e94800 RBX: 0000000000000100 RCX: ffff888058b08000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 1ffff110299e2438 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfaa6c R12: dffffc0000000000
R13: ffff88801a520988 R14: 0000000000000008 R15: ffff88814cf12178
FS: 0000555570783500(0000) GS:ffff888125d57000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002e3f4000 CR4: 00000000003526f0
Call Trace:
call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1747
expire_timers kernel/time/timer.c:1793 [inline]
__run_timers kernel/time/timer.c:2372 [inline]
__run_timer_base+0x646/0x860 kernel/time/timer.c:2384
run_timer_base kernel/time/timer.c:2393 [inline]
run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 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+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7109
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 eb 2c 29 f6 e8 06 fe 5f f6 fb bf 01 00 00 00 8b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc900033d77c0 EFLAGS: 00000282
RAX: 15086240a2e94800 RBX: 0000000000000000 RCX: 15086240a2e94800
RDX: 0000000000000006 RSI: ffffffff8d982fba RDI: 0000000000000001
RBP: ffffc900033d7870 R08: ffffffff8fa0b3f7 R09: 1ffffffff1f4167e
R10: dffffc0000000000 R11: fffffbfff1f4167f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200067aef8
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lockdep_unregister_key+0x2c5/0x310 kernel/locking/lockdep.c:6619
Code: 65 48 8b 05 3d 31 fe 10 48 3b 44 24 10 0f 84 26 fe ff ff e8 fd 28 c8 09 e8 28 2a c8 09 41 f7 c7 00 02 00 00 74 bd fb 40 84 ed <75> bc eb cd 90 0f 0b 90 e9 19 ff ff ff 90 0f 0b 90 e9 2a ff ff ff
RSP: 0018:ffffc900033d7938 EFLAGS: 00000246
RAX: 15086240a2e94800 RBX: ffff88801e6da298 RCX: 15086240a2e94800
RDX: ffffffff93604318 RSI: ffffffff8d996859 RDI: ffffffff8be1ba40
RBP: ffff88801e6da200 R08: 0000000000000000 R09: ffffffff81ab48a8
R10: dffffc0000000000 R11: fffffbfff1f4167f R12: 0000000000000000
R13: 0000000000001000 R14: 0000000000000001 R15: 0000000000000a03
__qdisc_destroy+0x166/0x420 net/sched/sch_generic.c:1081
netdev_for_each_tx_queue include/linux/netdevice.h:2655 [inline]
dev_shutdown+0x93/0x440 net/sched/sch_generic.c:1492
unregister_netdevice_many_notify+0xea7/0x2320 net/core/dev.c:12065
unregister_netdevice_many net/core/dev.c:12140 [inline]
unregister_netdevice_queue+0x33c/0x380 net/core/dev.c:11984
unregister_netdevice include/linux/netdevice.h:3379 [inline]
__tun_detach+0xda4/0x1560 drivers/net/tun.c:620
tun_detach drivers/net/tun.c:636 [inline]
tun_chr_close+0x10a/0x1c0 drivers/net/tun.c:3396
__fput+0x449/0xa70 fs/file_table.c:465
task_work_run+0x1d1/0x260 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3a8738ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd9bb23168 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f3a875b7da0 RCX: 00007f3a8738ebe9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f3a875b7da0 R08: 0000000000000240 R09: 0000001e9bb2345f
R10: 00000000003ffb98 R11: 0000000000000246 R12: 000000000004b866
R13: 00007f3a875b5fa0 R14: ffffffffffffffff R15: 00007ffd9bb23280
----------------
Code disassembly (best guess):
0: 24 20 and $0x20,%al
2: f6 44 24 21 02 testb $0x2,0x21(%rsp)
7: 74 0c je 0x15
9: 90 nop
a: 0f 0b ud2
c: 48 f7 03 08 00 00 00 testq $0x8,(%rbx)
13: 74 64 je 0x79
15: bf 01 00 00 00 mov $0x1,%edi
1a: e8 eb 2c 29 f6 call 0xf6292d0a
1f: e8 06 fe 5f f6 call 0xf65ffe2a
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 8b ab ff ff call 0xffffabba <-- trapping instruction
2f: 48 c7 44 24 40 00 00 movq $0x0,0x40(%rsp)
36: 00 00
38: 9c pushf
39: 8f 44 24 40 pop 0x40(%rsp)
3d: 8b .byte 0x8b
3e: 44 rex.R
3f: 24 .byte 0x24