[    2.525779] ip (256) used greatest stack depth: 12376 bytes left
[    2.606000] ip (261) used greatest stack depth: 12136 bytes left
[    3.026487] ipip: IPv4 and MPLS over IPv4 tunneling driver
[    9.802421] ------------[ cut here ]------------
[    9.802587] refcount_t: underflow; use-after-free.
[    9.802679] WARNING: CPU: 2 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    9.802812] Modules linked in: xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables x_tables inet_diag ipip veth
[    9.802961] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    9.803066] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.803147] Workqueue: netns cleanup_net
[    9.803208] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    9.803272] Code: a4 e8 18 ed b9 ff 90 0f 0b 90 90 c3 80 3d d9 ea ea 00 00 75 89 c6 05 d0 ea ea 00 01 90 48 c7 c7 78 de b1 a4 e8 f5 ec b9 ff 90 <0f> 0b 90 90 c3 80 3d b4 ea ea 00 00 0f 85 62 ff ff ff c6 05 a7 ea
[    9.803468] RSP: 0018:ffffaacfc0067d50 EFLAGS: 00010286
[    9.803544] RAX: 0000000000000000 RBX: ffffaacfc0067d60 RCX: 00000000ffffdfff
[    9.803626] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    9.803708] RBP: ffffaacfc0067868 R08: ffffffffa4f56d28 R09: 00000000ffffdfff
[    9.803826] R10: ffffffffa4e76d40 R11: ffffffffa4f26d40 R12: dead000000000122
[    9.803920] R13: 00000000fffb91d8 R14: 0000000000000001 R15: ffff9db184f8c000
[    9.804016] FS:  0000000000000000(0000) GS:ffff9db2196d8000(0000) knlGS:0000000000000000
[    9.804128] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.804207] CR2: 000055dd032dcdec CR3: 00000000079f6003 CR4: 0000000000772ef0
[    9.804328] PKRU: 55555554
[    9.804378] Call Trace:
[    9.804434]  <TASK>
[    9.804469]  netdev_run_todo+0x21a/0x550
[    9.804555]  ops_undo_list+0x1e3/0x1f0
[    9.804631]  cleanup_net+0x1b7/0x2b0
[    9.804688]  process_one_work+0x162/0x380
[    9.804768]  worker_thread+0x299/0x3c0
[    9.804850]  ? rescuer_thread+0x4c0/0x4c0
[    9.804910]  kthread+0x101/0x1f0
[    9.804977]  ? kthreads_online_cpu+0x110/0x110
[    9.805045]  ? kthreads_online_cpu+0x110/0x110
[    9.805129]  ret_from_fork+0x11c/0x140
[    9.805187]  ? kthreads_online_cpu+0x110/0x110
[    9.805271]  ret_from_fork_asm+0x11/0x20
[    9.805340]  </TASK>
[    9.805385] ---[ end trace 0000000000000000 ]---