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workqueue: cannot queue hci_tx_work on wq hci0
WARNING: kernel/workqueue.c:2271 at __queue_work+0xd53/0x1020 kernel/workqueue.c:2269, CPU#0: kworker/0:5/5328
Modules linked in:
CPU: 0 UID: 0 PID: 5328 Comm: kworker/0:5 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: events l2cap_info_timeout
RIP: 0010:__queue_work+0xd7e/0x1020 kernel/workqueue.c:2269
Code: 83 c5 18 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 23 25 a4 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:ffffc9000f4f7818 EFLAGS: 00010086
RAX: 1ffff110039b298d RBX: 0000000000000008 RCX: ffff888012198000
RDX: ffff888012818978 RSI: ffffffff8aa1a650 RDI: ffffffff9014cf00
RBP: 0000000000000020 R08: ffff88801cd94c57 R09: 1ffff110039b298a
R10: dffffc0000000000 R11: ffffed10039b298b R12: dffffc0000000000
R13: ffff88801cd94c68 R14: ffffffff9014cf00 R15: ffff888012818978
FS: 0000000000000000(0000) GS:ffff88808ca51000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f10c45b63a0 CR3: 000000000e54c000 CR4: 0000000000352ef0
Call Trace:
<TASK>
queue_work_on+0x106/0x1d0 kernel/workqueue.c:2405
l2cap_conn_start+0x5b1/0xff0 net/bluetooth/l2cap_core.c:1552
l2cap_info_timeout+0x68/0xa0 net/bluetooth/l2cap_core.c:1662
process_one_work kernel/workqueue.c:3276 [inline]
process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
----------------
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 23 25 a4 00 call 0xa4253c
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