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workqueue: cannot queue hci_cmd_timeout on wq hci3
WARNING: kernel/workqueue.c:2274 at __queue_work+0xd1f/0xfc0 kernel/workqueue.c:2272, CPU#0: syz-executor/8185
Modules linked in:
CPU: 0 UID: 0 PID: 8185 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__queue_work+0xd4a/0xfc0 kernel/workqueue.c:2272
Code: 83 c5 18 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 17 ad a1 00 49 8b 75 00 49 81 c7 70 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:ffffc90000007bf0 EFLAGS: 00010082
RAX: 1ffff1100f7ae14e RBX: 0000000000000008 RCX: ffff8880341bbd00
RDX: ffff888076481170 RSI: ffffffff8aa34ad0 RDI: ffffffff90159540
RBP: 0000000000000100 R08: ffffffff90129cf7 R09: 1ffffffff202539e
R10: dffffc0000000000 R11: ffffffff818debe0 R12: dffffc0000000000
R13: ffff88807bd70a70 R14: ffffffff90159540 R15: ffff888076481170
FS: 0000000000000000(0000) GS:ffff88812543c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f863bb456b8 CR3: 0000000075a42000 CR4: 00000000003526f0
Call Trace:
call_timer_fn+0x192/0x5e0 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1794 [inline]
__run_timers kernel/time/timer.c:2374 [inline]
__run_timer_base+0x67e/0x8b0 kernel/time/timer.c:2386
run_timer_base kernel/time/timer.c:2395 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:finish_task_switch+0x427/0xbe0 kernel/sched/core.c:5211
Code: 41 c7 84 24 e0 0d 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 96 fc 1f 0a e8 01 b1 38 00 fb 49 8d bd 68 16 00 00 <48> 89 f8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 7b 03 00 00 41 80
RSP: 0018:ffffc90004557210 EFLAGS: 00000202
RAX: 000000000004300d RBX: 1ffff110170c777c RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8df45aa1 RDI: ffff8880341bd368
RBP: ffffc90004557270 R08: ffffffff90129cf7 R09: 1ffffffff202539e
R10: dffffc0000000000 R11: fffffbfff202539f R12: ffff8880b863ae48
R13: ffff8880341bbd00 R14: ffff88807d73db80 R15: dffffc0000000000
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1664/0x5520 kernel/sched/core.c:6966
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7294
irqentry_exit+0x5e4/0x700 kernel/entry/common.c:240
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x221/0x350 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 f1 b3 10 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 ab 0f 7c 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 10 a0 13 0a cc 48 8d 3d 18 c2 73
RSP: 0018:ffffc900045575c8 EFLAGS: 00000282
RAX: 0ae9c37c4678db00 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000001 RSI: ffffffff8e1bb69b RDI: ffffffff8c2888e0
RBP: ffffffff818e26c5 R08: 0000000000000008 R09: ffffffff96473b88
R10: 0000000034c01466 R11: 000000006943e1f5 R12: 0000000000000000
R13: ffff888076481140 R14: 0000000000000001 R15: 0000000000000246
touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:3993
__flush_workqueue+0x14b/0x14f0 kernel/workqueue.c:4035
drain_workqueue+0xd3/0x390 kernel/workqueue.c:4199
hci_dev_close_sync+0x62f/0x10e0 net/bluetooth/hci_sync.c:5354
hci_dev_do_close net/bluetooth/hci_core.c:502 [inline]
hci_unregister_dev+0x21a/0x5a0 net/bluetooth/hci_core.c:2716
vhci_release+0x152/0x1a0 drivers/bluetooth/hci_vhci.c:690
__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+0x70f/0x22c0 kernel/exit.c:974
do_group_exit+0x21b/0x2d0 kernel/exit.c:1116
get_signal+0x1284/0x1330 kernel/signal.c:3036
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:238 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:269 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:328 [inline]
do_syscall_64+0x33e/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc4c95d04e
Code: Unable to access opcode bytes at 0x7fcc4c95d024.
RSP: 002b:00007ffd66835ed8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: 0000000000000028 RBX: 000055557ee27500 RCX: 00007fcc4c95d04e
RDX: 0000000000000028 RSI: 00007fcc4d744670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffd66835f54 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fcc4d744670 R15: 0000000000000000
----------------
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 17 ad a1 00 call 0xa1ad30
19: 49 8b 75 00 mov 0x0(%r13),%rsi
1d: 49 81 c7 70 01 00 00 add $0x170,%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