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workqueue: cannot queue hci_cmd_timeout on wq hci1
WARNING: kernel/workqueue.c:2252 at __queue_work+0xd20/0xf90 kernel/workqueue.c:2250, CPU#0: syz-executor/11524
Modules linked in:
CPU: 0 UID: 0 PID: 11524 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
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 e6 c0 9c 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 e9 7d 28
RSP: 0018:ffffc90000007c10 EFLAGS: 00010086
RAX: 1ffff1100b4c8151 RBX: 0000000000000008 RCX: ffff888021393d00
RDX: ffff888033777178 RSI: ffffffff8a537db0 RDI: ffffffff8f850b60
RBP: 0000000000000100 R08: ffffffff8f822377 R09: 1ffffffff1f0446e
R10: dffffc0000000000 R11: ffffffff818a5d90 R12: dffffc0000000000
R13: ffff88805a640a88 R14: ffffffff8f850b60 R15: ffff888033777178
FS: 0000000000000000(0000) GS:ffff888125e1f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000777dc000 CR4: 00000000003526f0
DR0: 0000200000000080 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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+0x22b/0x7c0 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x60/0x150 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:lock_acquire+0x222/0x340 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 20 b1 bb 09 f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 0a 20 e2 10 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 37 78 e7
RSP: 0018:ffffc9000e407808 EFLAGS: 00000282
RAX: 20f18cc721bab100 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000001 RSI: ffffffff8d97605c RDI: ffffffff8bc083e0
RBP: ffffffff818a94a5 R08: 0000000000000008 R09: ffffffff95a278c8
R10: 00000000fb5d2235 R11: 00000000fad92985 R12: 0000000000000000
R13: ffff888033777148 R14: 0000000000000001 R15: 0000000000000246
touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:3940
__flush_workqueue+0x121/0x14b0 kernel/workqueue.c:3982
drain_workqueue+0xd3/0x390 kernel/workqueue.c:4146
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+0x694/0x22f0 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+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f95bdf8f749
Code: Unable to access opcode bytes at 0x7f95bdf8f71f.
RSP: 002b:00007fff8c3992b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f95bdf8f749
RDX: 00007f95bdf915dc RSI: 0000000000000000 RDI: 0000000000000007
RBP: 0000000000000000 R08: 000000000000000c R09: 0000000000000007
R10: 00007fff8c3998e4 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f95bed14670 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 e6 c0 9c 00 call 0x9cc0ff
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: e9 .byte 0xe9
3e: 7d 28 jge 0x68