syzbot

bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
bond0 (unregistering): Released all slaves
------------[ cut here ]------------
WARNING: CPU: 1 PID: 62 at net/l2tp/l2tp_core.c:1877 l2tp_exit_net+0x13b/0x170 net/l2tp/l2tp_core.c:1877
Modules linked in:
CPU: 1 UID: 0 PID: 62 Comm: kworker/u8:4 Not tainted 6.12.0-rc2-syzkaller-00006-g87d6aab2389e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: netns cleanup_net
RIP: 0010:l2tp_exit_net+0x13b/0x170 net/l2tp/l2tp_core.c:1877
Code: e8 ea 6e a7 f6 85 db 74 45 e8 a1 6a a7 f6 4c 89 ff 5b 41 5c 41 5e 41 5f e9 c2 4e d0 00 e8 8d 6a a7 f6 eb 05 e8 86 6a a7 f6 90 <0f> 0b 90 e9 3b ff ff ff e8 78 6a a7 f6 eb 05 e8 71 6a a7 f6 90 0f
RSP: 0018:ffffc900015e7a98 EFLAGS: 00010293
RAX: ffffffff8aed7be3 RBX: ffff88805e327920 RCX: ffff88801c3ebc00
RDX: 0000000000000000 RSI: ffffffff8c0adc40 RDI: ffffffff8c60fba0
RBP: ffffc900015e7bb0 R08: ffffffff901ced2f R09: 1ffffffff2039da5
R10: dffffc0000000000 R11: fffffbfff2039da6 R12: dffffc0000000000
R13: 1ffffffff1fdb050 R14: ffff88805e3278d8 R15: ffff88805e327800
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f85bd412d58 CR3: 000000007cf76000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ops_exit_list net/core/net_namespace.c:173 [inline]
 cleanup_net+0x802/0xcc0 net/core/net_namespace.c:626
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>