[    2.450879] eth1: renamed from tmp
[    2.526845] eth2: renamed from tmp
[    2.630035] l2tp_core: L2TP core driver, V2.0
[    2.631950] l2tp_netlink: L2TP netlink interface
[    2.641636] l2tp_ip: L2TP IP encapsulation support (L2TPv3)
[    2.659771] l2tp_eth: L2TP ethernet pseudowire support (L2TPv3)
[    2.749398] l2tp_ip6: L2TP IP encapsulation support for IPv6 (L2TPv3)
[    2.941703] Initializing XFRM netlink socket
[    3.533777] ------------[ cut here ]------------
[    3.533848] refcount_t: underflow; use-after-free.
[    3.533912] WARNING: CPU: 3 PID: 38 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    3.533988] Modules linked in: xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core
[    3.534058] CPU: 3 UID: 0 PID: 38 Comm: kworker/u20:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    3.534128] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    3.534181] Workqueue: l2tp l2tp_session_del_work [l2tp_core]
[    3.534239] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    3.534282] Code: a2 e8 e8 54 ba ff 90 0f 0b 90 90 c3 80 3d 00 e6 2b 01 00 75 89 c6 05 f7 e5 2b 01 01 90 48 c7 c7 f8 48 f5 a2 e8 c5 54 ba ff 90 <0f> 0b 90 90 c3 80 3d db e5 2b 01 00 0f 85 62 ff ff ff c6 05 ce e5
[    3.534414] RSP: 0018:ffffbc41c015bda8 EFLAGS: 00010286
[    3.534457] RAX: 0000000000000000 RBX: ffffbc41c015bdb8 RCX: 00000000ffffdfff
[    3.534516] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    3.534570] RBP: ffff93098633e000 R08: ffffffffa375ba28 R09: 00000000ffffdfff
[    3.534630] R10: ffffffffa367ba40 R11: ffffffffa372ba40 R12: 0000000000000001
[    3.534698] R13: 00000000fffb7962 R14: 0000000000000001 R15: ffff93098633e000
[    3.534770] FS:  0000000000000000(0000) GS:ffff930a1af11000(0000) knlGS:0000000000000000
[    3.534837] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.534889] CR2: 00005586c22bfdec CR3: 00000000060b4004 CR4: 0000000000772ef0
[    3.534944] PKRU: 55555554
[    3.534967] Call Trace:
[    3.534987]  <TASK>
[    3.535011]  netdev_run_todo+0x21a/0x550
[    3.535052]  l2tp_eth_delete+0x2f/0x50 [l2tp_eth]
[    3.535093]  l2tp_session_del_work+0x1c3/0x270 [l2tp_core]
[    3.535135]  ? complete+0x4c/0x70
[    3.535174]  process_one_work+0x162/0x380
[    3.535214]  worker_thread+0x299/0x3c0
[    3.535248]  ? rescuer_thread+0x4c0/0x4c0
[    3.535281]  kthread+0x101/0x1f0
[    3.535315]  ? kthreads_online_cpu+0x110/0x110
[    3.535358]  ? kthreads_online_cpu+0x110/0x110
[    3.535400]  ret_from_fork+0x11c/0x140
[    3.535439]  ? kthreads_online_cpu+0x110/0x110
[    3.535481]  ret_from_fork_asm+0x11/0x20
[    3.535520]  </TASK>
[    3.535543] ---[ end trace 0000000000000000 ]---