syzbot

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workqueue: cannot queue hci_conn_timeout on wq hci4
WARNING: CPU: 1 PID: 5973 at kernel/workqueue.c:2257 __queue_work+0xc9c/0x10f0 kernel/workqueue.c:2256
Modules linked in:
CPU: 1 UID: 0 PID: 5973 Comm: kworker/1:7 Not tainted 6.14.0-rc7-syzkaller-00205-g586de92313fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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 fa 48 c7 c7 e0 f2 6b 8b e8 05 32 f7 ff 90 <0f> 0b 90 90 e9 96 f7 ff ff e8 f6 00 37 00 90 0f 0b 90 e9 1b f6 ff
RSP: 0018:ffffc90004237a48 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817a2269
RDX: ffff8880129eda00 RSI: ffffffff817a2276 RDI: 0000000000000001
RBP: ffff88807920c8e8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000004 R12: 0000000000000000
R13: ffff888012573000 R14: ffff88807920c930 R15: ffff888012573178
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f93ad379178 CR3: 000000005fc6c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __queue_delayed_work+0x35b/0x460 kernel/workqueue.c:2509
 queue_delayed_work_on+0x12a/0x150 kernel/workqueue.c:2561
 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:671
 l2cap_chan_close+0xff/0xa30 net/bluetooth/l2cap_core.c:844
 l2cap_chan_timeout+0x196/0x310 net/bluetooth/l2cap_core.c:431
 process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3400
 kthread+0x3b2/0x750 kernel/kthread.c:464
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>