tipc: Left network mode
------------[ cut here ]------------
WARNING: CPU: 3 PID: 76 at net/l2tp/l2tp_core.c:1881 l2tp_exit_net+0xf1/0x1a0 net/l2tp/l2tp_core.c:1881
Modules linked in:
CPU: 3 UID: 0 PID: 76 Comm: kworker/u32:4 Not tainted 6.12.0-rc6-syzkaller-00272-gda4373fbcf00 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: netns cleanup_net
RIP: 0010:l2tp_exit_net+0xf1/0x1a0 net/l2tp/l2tp_core.c:1881
Code: 00 00 fc ff df 48 8d 6b 40 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 9d 00 00 00 48 83 bb 88 00 00 00 00 74 6c e8 90 13 4d f7 90 <0f> 0b 90 e8 87 13 4d f7 48 89 ef 5b 5d 41 5c e9 ab f9 c4 00 e8 76
RSP: 0018:ffffc90000e2fba0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88804e671800 RCX: ffffffff8b048af5
RDX: ffff88801f668000 RSI: ffffffff8a3f90e0 RDI: ffff88804e671888
RBP: ffff88804e671840 R08: 0000000000000007 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000004000000
R13: ffffc90000e2fc38 R14: dffffc0000000000 R15: fffffbfff1fbd4c8
FS:  0000000000000000(0000) GS:ffff88802b700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002d5f5ff8 CR3: 000000005fa08000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000be70000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ops_exit_list+0xb0/0x180 net/core/net_namespace.c:173
 cleanup_net+0x5b7/0xb40 net/core/net_namespace.c:626
 process_one_work+0x958/0x1b30 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>