net_ratelimit: 39 callbacks suppressed
GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2271 at __queue_work+0xd53/0x1020 kernel/workqueue.c:2269, CPU#1: syz.0.7628/1323
Modules linked in:
CPU: 1 UID: 0 PID: 1323 Comm: syz.0.7628 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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 58 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:ffffc90000a08c10 EFLAGS: 00010086
RAX: 1ffff1100f713951 RBX: 0000000000000008 RCX: ffff8880545f8000
RDX: ffff88805951f978 RSI: ffffffff8a9e4180 RDI: ffffffff90146890
RBP: 0000000000000100 R08: ffffffff901172b7 R09: 1ffffffff2022e56
R10: dffffc0000000000 R11: ffffffff818d6390 R12: dffffc0000000000
R13: ffff88807b89ca88 R14: ffffffff90146890 R15: ffff88805951f978
FS: 0000000000000000(0000) GS:ffff888125566000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5d273b3ff8 CR3: 000000005db5c000 CR4: 00000000003526f0
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:7234
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 c3 a0 e5 f5 e8 7e 2c 1f f6 fb bf 01 00 00 00 53 a6 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 54 2e 1f f6 bf 01
RSP: 0018:ffffc9000435f4c0 EFLAGS: 00000206
RAX: 00000000000068c9 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000006 RSI: ffffffff8def1a4d RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff901172b7 R09: 1ffffffff2022e56
R10: dffffc0000000000 R11: fffffbfff2022e57 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: 51 0c 09 00 89 c6 48 c7 c7 d0 f8 23 96 e8 93 07 0e 0a 90 e9 65 fe ff ff e8 f8 52 0b 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:ffffc9000435f5e0 EFLAGS: 00000246
RAX: 0000000000000046 RBX: ffff88806ccf3268 RCX: 0000000000000046
RDX: ffffffff93df7438 RSI: ffffffff8df0b1b2 RDI: ffffffff8c27a480
RBP: ffff8880545f8000 R08: ffffffff81aef2d8 R09: ffffffff8e7602e0
R10: dffffc0000000000 R11: fffffbfff2022e57 R12: 0000000000000000
R13: ffff88806ccf3269 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:2683 [inline]
dev_shutdown+0x93/0x440 net/sched/sch_generic.c:1488
unregister_netdevice_many_notify+0x11a9/0x2370 net/core/dev.c:12391
unregister_netdevice_many net/core/dev.c:12466 [inline]
unregister_netdevice_queue+0x31f/0x360 net/core/dev.c:12280
unregister_netdevice include/linux/netdevice.h:3408 [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
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x69b/0x2320 kernel/exit.c:971
do_group_exit+0x21b/0x2d0 kernel/exit.c:1112
get_signal+0x1284/0x1330 kernel/signal.c:3034
arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
exit_to_user_mode_loop+0x86/0x480 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: 0033:0x7f755fd9c629
Code: Unable to access opcode bytes at 0x7f755fd9c5ff.
RSP: 002b:00007f7560d06028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f7560015fa0 RCX: 00007f755fd9c629
RDX: 00002000000004c0 RSI: 0000000000008914 RDI: 0000000000000008
RBP: 00007f755fe32b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7560016038 R14: 00007f7560015fa0 R15: 00007fff6c3d9d18
----------------
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 58 a2 00 call 0xa2588c
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