[    2.204342] gre: GRE over IPv4 demultiplexer driver
[    2.277928] ip (270) used greatest stack depth: 12168 bytes left
[    2.380173] ip_gre: GRE over IPv4 tunneling driver
[    2.664511] ------------[ cut here ]------------
[    2.664611] refcount_t: underflow; use-after-free.
[    2.664687] WARNING: CPU: 0 PID: 12 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[    2.664789] Modules linked in: ip_gre gre
[    2.664841] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[    2.664938] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.665005] Workqueue: netns cleanup_net
[    2.665063] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[    2.665123] Code: a3 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 b5 a3 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
[    2.665317] RSP: 0018:ffffaacd80067d50 EFLAGS: 00010286
[    2.665378] RAX: 0000000000000000 RBX: ffffaacd80067d60 RCX: 00000000ffffdfff
[    2.665451] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[    2.665537] RBP: ffffaacd80067858 R08: ffffffffa435ba28 R09: 00000000ffffdfff
[    2.665622] R10: ffffffffa427ba40 R11: ffffffffa432ba40 R12: dead000000000122
[    2.665702] R13: 00000000fffb7605 R14: 0000000000000001 R15: ffff9beb8851f000
[    2.665783] FS:  0000000000000000(0000) GS:ffff9bec1a191000(0000) knlGS:0000000000000000
[    2.665864] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.665929] CR2: 00007fd7eed55a20 CR3: 00000000037aa005 CR4: 0000000000772ef0
[    2.666011] PKRU: 55555554
[    2.666043] Call Trace:
[    2.666072]  <TASK>
[    2.666096]  netdev_run_todo+0x21a/0x550
[    2.666148]  ops_undo_list+0x1e3/0x1f0
[    2.666195]  cleanup_net+0x1b7/0x300
[    2.666242]  process_one_work+0x162/0x380
[    2.666294]  worker_thread+0x299/0x3c0
[    2.666339]  ? rescuer_thread+0x4c0/0x4c0
[    2.666385]  kthread+0x101/0x1f0
[    2.666434]  ? kthreads_online_cpu+0x110/0x110
[    2.666491]  ? kthreads_online_cpu+0x110/0x110
[    2.666548]  ret_from_fork+0x11c/0x140
[    2.666597]  ? kthreads_online_cpu+0x110/0x110
[    2.666657]  ret_from_fork_asm+0x11/0x20
[    2.666706]  </TASK>
[    2.666739] ---[ end trace 0000000000000000 ]---
[   11.805646] ip6_gre: GRE over IPv6 tunneling driver
[   17.763496] ip6_tunnel: tep0 xmit: Local address not yet configured!
[   19.235511] ip6_tunnel: tep0 xmit: Local address not yet configured!
[   20.580498] ip6_tunnel: tep0 xmit: Local address not yet configured!
[   22.052487] ip6_tunnel: tep0 xmit: Local address not yet configured!