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workqueue: cannot queue hci_conn_timeout on wq hci1
WARNING: CPU: 0 PID: 5989 at kernel/workqueue.c:2257 __queue_work+0xc9c/0x10f0 kernel/workqueue.c:2256
Modules linked in:
CPU: 0 UID: 0 PID: 5989 Comm: kworker/0:4 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events l2cap_chan_timeout
RIP: 0010:__queue_work+0xc9c/0x10f0 kernel/workqueue.c:2256
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 28 04 00 00 48 8b 75 18 4c 89 f2 48 c7 c7 40 e5 8b 8b e8 05 22 f7 ff 90 <0f> 0b 90 90 e9 96 f7 ff ff e8 b6 90 37 00 90 0f 0b 90 e9 1b f6 ff
RSP: 0018:ffffc90003287a50 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817ad098
RDX: ffff88802b128000 RSI: ffffffff817ad0a5 RDI: 0000000000000001
RBP: ffff88806335c948 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88804d416800 R14: ffff88804d416978 R15: ffff88806335c950
FS:  0000000000000000(0000) GS:ffff8880d69b3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa188d136c0 CR3: 000000000e182000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __queue_delayed_work+0x35b/0x460 kernel/workqueue.c:2509
 queue_delayed_work_on+0x1b5/0x200 kernel/workqueue.c:2561
 queue_delayed_work include/linux/workqueue.h:677 [inline]
 hci_conn_drop include/net/bluetooth/hci_core.h:1663 [inline]
 hci_conn_drop include/net/bluetooth/hci_core.h:1637 [inline]
 l2cap_chan_del+0x5a0/0x8f0 net/bluetooth/l2cap_core.c:671
 l2cap_chan_close+0xfe/0xa30 net/bluetooth/l2cap_core.c:844
 l2cap_chan_timeout+0x196/0x310 net/bluetooth/l2cap_core.c:431
 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>