------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2298 at __queue_work+0xd3f/0x1040 kernel/workqueue.c:2296, CPU#1: syz-executor/14749
Modules linked in:
CPU: 1 UID: 0 PID: 14749 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__queue_work+0xd67/0x1040 kernel/workqueue.c:2296
Code: a5 0e 49 8d 7d 18 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 fa dd a3 00 49 8b 75 18 49 81 c7 70 01 00 00 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef
RSP: 0018:ffffc90000a08bd8 EFLAGS: 00010082
RAX: 1ffff1100c28b94e RBX: 0000000000000008 RCX: ffff88807b519f00
RDX: ffff88805157f970 RSI: ffffffff8a9a8040 RDI: ffffffff903329b0
RBP: 0000000000000100 R08: ffffffff90302af7 R09: 1ffffffff206055e
R10: dffffc0000000000 R11: ffffffff818d37e0 R12: dffffc0000000000
R13: ffff88806145ca58 R14: ffffffff903329b0 R15: ffff88805157f970
FS: 0000000000000000(0000) GS:ffff88812539c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c31603d CR3: 0000000054106000 CR4: 00000000003526f0
DR0: 0000000000000101 DR1: 0000000000000007 DR2: 000000000000000f
DR3: 0000000000000006 DR6: 00000000ffff0ff0 DR7: 0000000000000400
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:5245
Code: 41 c7 84 24 e0 0d 00 00 00 00 00 00 e9 27 06 00 00 49 83 c4 48 4c 89 e7 e8 46 2a 15 0a e8 a1 fd 38 00 fb 49 8d bd c8 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:ffffc90003c27450 EFLAGS: 00000206
RAX: 000000000000ea21 RBX: 1ffff110170e778c RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8dfa4398 RDI: ffff88807b51b5c8
RBP: ffffc90003c274b0 R08: ffffffff90302af7 R09: 1ffffffff206055e
R10: dffffc0000000000 R11: fffffbfff206055f R12: ffff8880b863aec8
R13: ffff88807b519f00 R14: ffff88802dfe5d00 R15: dffffc0000000000
context_switch kernel/sched/core.c:5391 [inline]
__schedule+0x1829/0x5740 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8b0 kernel/entry/common.c:164
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 31 bf 05 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 0b 9a 96 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 18 e3 91
RSP: 0018:ffffc90003c27808 EFLAGS: 00000282
RAX: 3c02729e68e9f000 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000001 RSI: ffffffff8e216dde RDI: ffffffff8c28b8e0
RBP: ffffffff818d72c5 R08: 0000000000000008 R09: ffffffff967d36b0
R10: 00000000f07e72cb R11: 00000000a4010462 R12: 0000000000000000
R13: ffff88805157f940 R14: 0000000000000001 R15: 0000000000000246
touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:4029
__flush_workqueue+0x14b/0x14f0 kernel/workqueue.c:4071
drain_workqueue+0xd3/0x390 kernel/workqueue.c:4235
hci_dev_close_sync+0x66b/0x1150 net/bluetooth/hci_sync.c:5364
hci_dev_do_close net/bluetooth/hci_core.c:502 [inline]
hci_unregister_dev+0x21a/0x5a0 net/bluetooth/hci_core.c:2679
vhci_release+0x152/0x1a0 drivers/bluetooth/hci_vhci.c:690
__fput+0x44f/0xa60 fs/file_table.c:510
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:976
do_group_exit+0x21b/0x2d0 kernel/exit.c:1119
__do_sys_exit_group kernel/exit.c:1130 [inline]
__se_sys_exit_group kernel/exit.c:1128 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1128
x64_sys_call+0x221a/0x2240 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f35da19ce59
Code: Unable to access opcode bytes at 0x7f35da19ce2f.
RSP: 002b:00007ffeae8f84c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000043 RCX: 00007f35da19ce59
RDX: 00007f35da1ca1d7 RSI: 0000000000000004 RDI: 0000000000000043
RBP: 00007f35da4167b8 R08: 0000000000000000 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000000003 R14: 00007ffeae8f8728 R15: 0000000000000000
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 49 8d 7d 18 lea 0x18(%r13),%rdi
4: 48 89 f8 mov %rdi,%rax
7: 48 c1 e8 03 shr $0x3,%rax
b: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
10: 74 05 je 0x17
12: e8 fa dd a3 00 call 0xa3de11
17: 49 8b 75 18 mov 0x18(%r13),%rsi
1b: 49 81 c7 70 01 00 00 add $0x170,%r15
22: 4c 89 f7 mov %r14,%rdi
25: 4c 89 fa mov %r15,%rdx
* 28: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2d: 4c 89 e8 mov %r13,%rax
30: 48 c1 e8 03 shr $0x3,%rax
34: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
39: 74 08 je 0x43
3b: 4c 89 ef mov %r13,%rdi