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workqueue: cannot queue hci_cmd_timeout on wq hci4
WARNING: kernel/workqueue.c:2252 at 0x0, CPU#0: syz-executor/9827
Modules linked in:
CPU: 0 UID: 0 PID: 9827 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__queue_work+0xd4b/0xf90 kernel/workqueue.c:2250
Code: 83 c5 18 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 f6 57 9d 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:ffffc90000007b10 EFLAGS: 00010086
RAX: 1ffff1100aefc151 RBX: 0000000000000008 RCX: ffff888026ac0000
RDX: ffff888029ff0978 RSI: ffffffff8a54b4f0 RDI: ffffffff8f84dd30
RBP: 0000000000000100 R08: ffffffff8f81f577 R09: 1ffffffff1f03eae
R10: dffffc0000000000 R11: ffffffff818ab700 R12: dffffc0000000000
R13: ffff8880577e0a88 R14: ffffffff8f84dd30 R15: ffff888029ff0978
FS: 0000000000000000(0000) GS:ffff888125e3a000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f93e001cdf4 CR3: 0000000078b7e000 CR4: 00000000003526f0
Call Trace:
call_timer_fn+0x16e/0x590 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1794 [inline]
__run_timers kernel/time/timer.c:2373 [inline]
__run_timer_base+0x646/0x860 kernel/time/timer.c:2385
run_timer_base kernel/time/timer.c:2394 [inline]
run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2404
handle_softirqs+0x27d/0x850 kernel/softirq.c:626
__do_softirq kernel/softirq.c:660 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:727
irq_exit_rcu+0x9/0x30 kernel/softirq.c:743
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+0xb0/0x150 kernel/sched/core.c:7190
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 10 00 00 00 74 64 bf 01 00 00 00 e8 eb f8 34 f6 e8 16 75 6d f6 fb bf 01 00 00 00 1b a8 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90003c2f5c0 EFLAGS: 00000282
RAX: 485f3fe92c386c00 RBX: 0000000000000000 RCX: 485f3fe92c386c00
RDX: 0000000000000006 RSI: ffffffff8d7902e8 RDI: 0000000000000001
RBP: ffffc90003c2f670 R08: ffffffff8f81f577 R09: 1ffffffff1f03eae
R10: dffffc0000000000 R11: fffffbfff1f03eaf R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000785eb8
irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x16c/0x340 kernel/locking/lockdep.c:5872
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 14 e7 df 10 <48> 3b 44 24 58 0f 85 e5 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc90003c2f788 EFLAGS: 00000206
RAX: 485f3fe92c386c00 RBX: 0000000000000000 RCX: 485f3fe92c386c00
RDX: 0000000000000001 RSI: ffffffff8d976f81 RDI: ffffffff8bc075e0
RBP: ffffffff818af1a5 R08: 0000000000000008 R09: ffffffff95a1a7c8
R10: 00000000e5c45863 R11: 0000000030f8d053 R12: 0000000000000000
R13: ffff888029ff0948 R14: 0000000000000001 R15: 0000000000000246
touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:3944
__flush_workqueue+0x121/0x14b0 kernel/workqueue.c:3986
drain_workqueue+0xd3/0x390 kernel/workqueue.c:4150
hci_dev_close_sync+0x62f/0x1100 net/bluetooth/hci_sync.c:5312
hci_dev_do_close net/bluetooth/hci_core.c:501 [inline]
hci_unregister_dev+0x21a/0x5b0 net/bluetooth/hci_core.c:2715
vhci_release+0x152/0x1a0 drivers/bluetooth/hci_vhci.c:690
__fput+0x44c/0xa70 fs/file_table.c:468
task_work_run+0x1d4/0x260 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x6c5/0x2310 kernel/exit.c:971
do_group_exit+0x21c/0x2d0 kernel/exit.c:1112
__do_sys_exit_group kernel/exit.c:1123 [inline]
__se_sys_exit_group kernel/exit.c:1121 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121
x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fddd2d8f749
Code: Unable to access opcode bytes at 0x7fddd2d8f71f.
RSP: 002b:00007ffc32a24238 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fddd2d8f749
RDX: 00007fddd2d90f47 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007fddd2fe67b8 R08: 0000000000000000 R09: 0000000000000007
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008
R13: 0000000000000003 R14: 00007ffc32a24ae8 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 f6 57 9d 00 call 0x9d580f
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