------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci5
WARNING: kernel/workqueue.c:2353 at __queue_work+0xd83/0x10d0 kernel/workqueue.c:2352, CPU#1: syz.6.2944/17120
Modules linked in:
CPU: 1 UID: 0 PID: 17120 Comm: syz.6.2944 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__queue_work+0xd9f/0x10d0 kernel/workqueue.c:2352
Code: 49 81 c7 70 01 00 00 4c 8d 35 9d d4 ee 0e 48 89 f8 48 c1 e8 03 80 3c 18 00 74 05 e8 0b 97 a9 00 49 8b 75 18 4c 89 f7 4c 89 fa <67> 48 0f b9 3a 4c 89 e8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ef e8
RSP: 0018:ffffc90000a18bc0 EFLAGS: 00010046
RAX: 1ffff11009fb594e RBX: dffffc0000000000 RCX: ffff88802c275dc0
RDX: ffff88807ae40970 RSI: ffffffff8ad5eb10 RDI: ffffffff907d12e0
RBP: 0000000000010000 R08: 0000000000000100 R09: 1ffffffff20f47af
R10: dffffc0000000000 R11: ffffffff818e4560 R12: 0000000000000008
R13: ffff88804fdaca58 R14: ffffffff907d12e0 R15: ffff88807ae40970
FS: 00007f14064fe6c0(0000) GS:ffff888124dd1000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f14064dcff8 CR3: 000000007440e000 CR4: 00000000003526f0
Call Trace:
call_timer_fn+0x18d/0x5f0 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+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:finish_task_switch+0x413/0xc60 kernel/sched/core.c:5377
Code: 04 00 00 41 c7 84 24 20 0e 00 00 00 00 00 00 e9 db 06 00 00 49 83 c4 48 4c 89 e7 e8 37 f7 51 0a e8 22 18 3a 00 fb 4c 8b 65 c8 <49> 8d bc 24 10 17 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc90004d2f440 EFLAGS: 00000206
RAX: 000000000000142d RBX: ffff8880b873c8e0 RCX: 8000000000000001
RDX: 0000000000000006 RSI: ffffffff8e413272 RDI: ffffffff8c6da080
RBP: ffffc90004d2f490 R08: ffffffff907a3d7f R09: 1ffffffff20f47af
R10: dffffc0000000000 R11: fffffbfff20f47b0 R12: ffff88802c275dc0
R13: ffff8880b873c8b8 R14: dffffc0000000000 R15: 1ffff110170e791c
context_switch kernel/sched/core.c:5529 [inline]
__schedule+0x17e3/0x58f0 kernel/sched/core.c:7277
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7599
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 50 15 42 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 a2 c0 f1 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 bf 19 45 0a cc 48 8d 3d 97 47 da
RSP: 0018:ffffc90004d2f7c8 EFLAGS: 00000282
RAX: f6434f6c6889dc00 RBX: 0000000000000001 RCX: 0000000000000046
RDX: ffff88802c2769c0 RSI: ffffffff8e69bc48 RDI: ffffffff8c6da080
RBP: ffff88802c275dc0 R08: 0000000000000008 R09: ffffffff96d7d7b0
R10: 00000000e28bbca1 R11: 00000000bfdc3b3a R12: ffff88807ae40940
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000246
touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:4111
__flush_workqueue+0x148/0x1470 kernel/workqueue.c:4153
drain_workqueue+0xce/0x380 kernel/workqueue.c:4317
hci_dev_close_sync+0x60e/0x10c0 net/bluetooth/hci_sync.c:5597
hci_dev_do_close+0x30/0xc0 net/bluetooth/hci_core.c:502
hci_rfkill_set_block+0x1f4/0x290 net/bluetooth/hci_core.c:893
rfkill_set_block+0x19f/0x4d0 net/rfkill/core.c:360
rfkill_fop_write+0x43b/0x560 net/rfkill/core.c:1316
vfs_write+0x296/0xba0 fs/read_write.c:685
ksys_write+0x150/0x270 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f140559e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f14064fe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1405826180 RCX: 00007f140559e159
RDX: 0000000000000008 RSI: 00002000000000c0 RDI: 000000000000000b
RBP: 00007f140563503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1405826218 R14: 00007f1405826180 R15: 00007f140594fa48
----------------
Code disassembly (best guess):
0: 49 81 c7 70 01 00 00 add $0x170,%r15
7: 4c 8d 35 9d d4 ee 0e lea 0xeeed49d(%rip),%r14 # 0xeeed4ab
e: 48 89 f8 mov %rdi,%rax
11: 48 c1 e8 03 shr $0x3,%rax
15: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1)
19: 74 05 je 0x20
1b: e8 0b 97 a9 00 call 0xa9972b
20: 49 8b 75 18 mov 0x18(%r13),%rsi
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: 4c 89 e8 mov %r13,%rax
32: 48 c1 e8 03 shr $0x3,%rax
36: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1)
3a: 74 08 je 0x44
3c: 4c 89 ef mov %r13,%rdi
3f: e8 .byte 0xe8