------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2297 at __queue_work+0xcee/0x1130 kernel/workqueue.c:2296, CPU#0: syz.9.4639/21926
Modules linked in:
CPU: 0 UID: 0 PID: 21926 Comm: syz.9.4639 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__queue_work+0xcf2/0x1130 kernel/workqueue.c:2296
Code: 00 00 00 fc ff df 49 8d 94 24 70 01 00 00 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 00 04 00 00 48 8d 3d f2 7e 0b 0f 48 8b 75 18 <67> 48 0f b9 3a e9 44 f7 ff ff e8 5f 80 39 00 90 0f 0b 90 e9 cc f5
RSP: 0018:ffffc90000007bd0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff11008eb814e
RDX: ffff888035c9d170 RSI: ffffffff8a7f4560 RDI: ffffffff90da8a20
RBP: ffff8880475c0a58 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000000 R12: ffff888035c9d000
R13: 1ffff92000000f8d R14: ffffffff81cf1c40 R15: 0000000000000001
FS: 00007f9dbae3b6c0(0000) GS:ffff8880d6379000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2004372286 CR3: 0000000021f42000 CR4: 0000000000352ef0
Call Trace:
call_timer_fn+0x19a/0x640 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1794 [inline]
__run_timers+0x583/0xaf0 kernel/time/timer.c:2374
__run_timer_base kernel/time/timer.c:2386 [inline]
__run_timer_base kernel/time/timer.c:2378 [inline]
run_timer_base+0x114/0x190 kernel/time/timer.c:2395
run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
handle_softirqs+0x1ea/0xa00 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x162/0x210 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+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x5e/0x370 kernel/locking/lockdep.c:5872
Code: 05 fb fd 25 12 83 f8 07 0f 87 d9 02 00 00 48 0f a3 05 06 17 f3 0e 0f 82 a4 02 00 00 8b 35 8e 4a f3 0e 85 f6 0f 85 bf 00 00 00 <48> 8b 44 24 30 65 48 2b 05 9d fd 25 12 0f 85 ed 02 00 00 48 83 c4
RSP: 0018:ffffc90004bf7858 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8def9308 RDI: ffffffff8c1c3480
RBP: ffff888035c9d140 R08: 000000000010e868 R09: ffffffff970e39e8
R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
touch_wq_lockdep_map+0xad/0x1c0 kernel/workqueue.c:4017
__flush_workqueue+0x131/0x1200 kernel/workqueue.c:4059
drain_workqueue+0x175/0x3b0 kernel/workqueue.c:4223
hci_dev_close_sync+0x349/0x1240 net/bluetooth/hci_sync.c:5354
hci_dev_do_close+0x2e/0xb0 net/bluetooth/hci_core.c:502
hci_dev_close+0x1a1/0x200 net/bluetooth/hci_core.c:527
hci_sock_ioctl+0x1d7/0x7e0 net/bluetooth/hci_sock.c:1135
sock_do_ioctl+0x118/0x280 net/socket.c:1313
sock_ioctl+0x599/0x6b0 net/socket.c:1434
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl fs/ioctl.c:583 [inline]
__x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9db9f9cdd9
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:00007f9dbae3b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9dba215fa0 RCX: 00007f9db9f9cdd9
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000007
RBP: 00007f9dba032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9dba216038 R14: 00007f9dba215fa0 R15: 00007ffe74a37828
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 fc add %bh,%ah
4: ff lcall (bad)
5: df 49 8d fisttps -0x73(%rcx)
8: 94 xchg %eax,%esp
9: 24 70 and $0x70,%al
b: 01 00 add %eax,(%rax)
d: 00 48 89 add %cl,-0x77(%rax)
10: f9 stc
11: 48 c1 e9 03 shr $0x3,%rcx
15: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1)
19: 0f 85 00 04 00 00 jne 0x41f
1f: 48 8d 3d f2 7e 0b 0f lea 0xf0b7ef2(%rip),%rdi # 0xf0b7f18
26: 48 8b 75 18 mov 0x18(%rbp),%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: e9 44 f7 ff ff jmp 0xfffff778
34: e8 5f 80 39 00 call 0x398098
39: 90 nop
3a: 0f 0b ud2
3c: 90 nop
3d: e9 .byte 0xe9
3e: cc int3
3f: f5 cmc