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workqueue: cannot queue hci_conn_timeout on wq hci2
WARNING: kernel/workqueue.c:2271 at __queue_work+0xd53/0x1020 kernel/workqueue.c:2269, CPU#0: syz.3.3018/19909
Modules linked in:
CPU: 0 UID: 0 PID: 19909 Comm: syz.3.3018 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__queue_work+0xd7e/0x1020 kernel/workqueue.c:2269
Code: 83 c5 18 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 73 a0 a2 00 49 8b 75 00 49 81 c7 78 01 00 00 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc
RSP: 0018:ffffc90000007c10 EFLAGS: 00010086
RAX: 1ffff1100758d94b RBX: 0000000000000008 RCX: ffff888030a01e80
RDX: ffff88801d7bb178 RSI: ffffffff8aa26560 RDI: ffffffff9014c600
RBP: 0000000000000100 R08: ffffffff9011cfb7 R09: 1ffffffff20239f6
R10: dffffc0000000000 R11: ffffffff818d69d0 R12: dffffc0000000000
R13: ffff88803ac6ca58 R14: ffffffff9014c600 R15: ffff88801d7bb178
FS: 0000555587c12500(0000) GS:ffff888125457000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff53a5daff8 CR3: 00000000b2f80000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
call_timer_fn+0x192/0x640 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1794 [inline]
__run_timers kernel/time/timer.c:2373 [inline]
__run_timer_base+0x67e/0x8b0 kernel/time/timer.c:2385
run_timer_base kernel/time/timer.c:2394 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2404
handle_softirqs+0x22a/0x870 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:preempt_schedule_irq+0x48/0xa0 kernel/sched/core.c:7238
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 a3 38 e3 f5 e8 ee e8 1c f6 fb bf 01 00 00 00 c3 a6 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 c4 ea 1c f6 bf 01
RSP: 0018:ffffc90003ad7860 EFLAGS: 00000202
RAX: 00000000000042cd RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000006 RSI: ffffffff8defacfd RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff9011cfb7 R09: 1ffffffff20239f6
R10: dffffc0000000000 R11: fffffbfff20239f7 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
irqentry_exit+0x599/0x620 kernel/entry/common.c:239
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lockdep_unregister_key+0x2d5/0x350 kernel/locking/lockdep.c:6616
Code: 31 18 09 00 89 c6 48 c7 c7 d0 e8 24 96 e8 33 66 10 0a 90 e9 65 fe ff ff e8 18 b2 0d 0a 41 f7 c7 00 02 00 00 74 b3 fb 40 84 ed <75> b2 eb c3 90 0f 0b 90 e9 26 ff ff ff 90 0f 0b 90 e9 2e ff ff ff
RSP: 0018:ffffc90003ad7980 EFLAGS: 00000246
RAX: 0000000000000046 RBX: ffff8880203e4268 RCX: 0000000000000046
RDX: ffffffff93e06438 RSI: ffffffff8df13efc RDI: ffffffff8c27d100
RBP: ffff888030a01e00 R08: ffffffff81af1328 R09: ffffffff8e75e5e0
R10: dffffc0000000000 R11: fffffbfff20239f7 R12: 0000000000000000
R13: ffff8880203e4269 R14: 0000000000001000 R15: 0000000000000a07
qdisc_lock_uninit include/net/pkt_sched.h:332 [inline]
__qdisc_destroy+0x1ab/0x4a0 net/sched/sch_generic.c:1077
netdev_for_each_tx_queue include/linux/netdevice.h:2684 [inline]
dev_shutdown+0x93/0x440 net/sched/sch_generic.c:1461
unregister_netdevice_many_notify+0x11a9/0x2370 net/core/dev.c:12419
unregister_netdevice_many net/core/dev.c:12494 [inline]
unregister_netdevice_queue+0x31f/0x360 net/core/dev.c:12308
unregister_netdevice include/linux/netdevice.h:3409 [inline]
__tun_detach+0x6d9/0x15d0 drivers/net/tun.c:621
tun_detach drivers/net/tun.c:637 [inline]
tun_chr_close+0x10a/0x1c0 drivers/net/tun.c:3436
__fput+0x44f/0xa70 fs/file_table.c:469
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efed119c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd0c4442b8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007efed1417da0 RCX: 00007efed119c819
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007efed1417da0 R08: 00007efed1416128 R09: 0000000000000000
R10: 00000000003ffd00 R11: 0000000000000246 R12: 00000000000b105c
R13: 00007efed141618c R14: 00000000000b0de4 R15: 00007efed1416180
----------------
Code disassembly (best guess):
0: 83 c5 18 add $0x18,%ebp
3: 4c 89 e8 mov %r13,%rax
6: 48 c1 e8 03 shr $0x3,%rax
a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
f: 74 08 je 0x19
11: 4c 89 ef mov %r13,%rdi
14: e8 73 a0 a2 00 call 0xa2a08c
19: 49 8b 75 00 mov 0x0(%r13),%rsi
1d: 49 81 c7 78 01 00 00 add $0x178,%r15
24: 4c 89 f7 mov %r14,%rdi
27: 4c 89 fa mov %r15,%rdx
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 48 83 c4 58 add $0x58,%rsp
33: 5b pop %rbx
34: 41 5c pop %r12
36: 41 5d pop %r13
38: 41 5e pop %r14
3a: 41 5f pop %r15
3c: 5d pop %rbp
3d: c3 ret
3e: cc int3
3f: cc int3