------------[ cut here ]------------
WARNING: CPU: 3 PID: 64 at kernel/workqueue.c:2257 __queue_work+0xc3a/0x1080 kernel/workqueue.c:2256
Modules linked in:
CPU: 3 UID: 0 PID: 64 Comm: kworker/3:1 Not tainted 6.12.0-syzkaller-11716-gd8b78066f4c9 #0
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+0xc3a/0x1080 kernel/workqueue.c:2256
FS:  0000000000000000(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7a0e2f2440 CR3: 000000002919e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000097 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __queue_delayed_work+0x21b/0x2e0 kernel/workqueue.c:2507
 queue_delayed_work_on+0x12a/0x150 kernel/workqueue.c:2552
 queue_delayed_work include/linux/workqueue.h:677 [inline]
 hci_conn_drop include/net/bluetooth/hci_core.h:1643 [inline]
 hci_conn_drop include/net/bluetooth/hci_core.h:1617 [inline]
 l2cap_chan_del+0x5a0/0x8f0 net/bluetooth/l2cap_core.c:674
 l2cap_chan_close+0xff/0xa30 net/bluetooth/l2cap_core.c:847
 l2cap_chan_timeout+0x196/0x310 net/bluetooth/l2cap_core.c:435
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>