[    2.112696] ip (248) used greatest stack depth: 12344 bytes left
[    2.283698] ip (274) used greatest stack depth: 12168 bytes left
[    2.697123] gre: GRE over IPv4 demultiplexer driver
[    2.698709] ip_gre: GRE over IPv4 tunneling driver
[    2.904537] 8021q: 802.1Q VLAN Support v1.8
[    3.274885] GACT probability NOT on
[    3.276038] tc (376) used greatest stack depth: 11840 bytes left
[  176.249882] ------------[ cut here ]------------
[  176.250053] refcount_t: underflow; use-after-free.
[  176.250153] WARNING: CPU: 3 PID: 17274 at lib/refcount.c:28 refcount_warn_saturate+0xbc/0x110
[  176.250271] Modules linked in: act_gact cls_flower sch_ingress 8021q ip_gre gre vrf veth
[  176.250362] CPU: 3 UID: 0 PID: 17274 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(voluntary) 
[  176.250450] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  176.250504] RIP: 0010:refcount_warn_saturate+0xbc/0x110
[  176.250548] Code: 9b e8 18 df ba ff 90 0f 0b 90 90 c3 80 3d f9 da eb 00 00 75 89 c6 05 f0 da eb 00 01 90 48 c7 c7 28 e0 b1 9b e8 f5 de ba ff 90 <0f> 0b 90 90 c3 80 3d d4 da eb 00 00 0f 85 62 ff ff ff c6 05 c7 da
[  176.250680] RSP: 0018:ffffb259c6f27730 EFLAGS: 00010282
[  176.250728] RAX: 0000000000000000 RBX: ffffb259c6f27740 RCX: 00000000ffffdfff
[  176.250794] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  176.250849] RBP: ffffb259c6f27248 R08: ffffffff9bf56a28 R09: 00000000ffffdfff
[  176.250921] R10: ffffffff9be76a40 R11: ffffffff9bf26a40 R12: dead000000000122
[  176.250977] R13: 00000000fffe1c17 R14: 0000000000000001 R15: ffff9ad6847d8000
[  176.251034] FS:  00007f1a1b1cb800(0000) GS:ffff9ad722759000(0000) knlGS:0000000000000000
[  176.251109] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  176.251163] CR2: 00000000004e7458 CR3: 00000000031ba001 CR4: 0000000000772ef0
[  176.251215] PKRU: 55555554
[  176.251236] Call Trace:
[  176.251272]  <TASK>
[  176.251301]  netdev_run_todo+0x21a/0x550
[  176.251364]  rtnl_dellink+0x15b/0x350
[  176.251408]  ? virtio_fs_enqueue_req+0x352/0x570
[  176.251473]  ? netdev_run_todo+0x63/0x550
[  176.251503]  ? rtnl_bridge_getlink+0x1a0/0x1a0
[  176.251542]  rtnetlink_rcv_msg+0x358/0x400
[  176.251572]  ? get_page_from_freelist+0x15b4/0x1770
[  176.251626]  ? rtnl_calcit.isra.0+0x110/0x110
[  176.251665]  netlink_rcv_skb+0x57/0x100
[  176.251714]  netlink_unicast+0x252/0x380
[  176.251748]  ? __alloc_skb+0xdb/0x190
[  176.251794]  netlink_sendmsg+0x1be/0x3e0
[  176.251836]  ____sys_sendmsg+0x132/0x260
[  176.251888]  ? copy_msghdr_from_user+0x6c/0xa0
[  176.251929]  ___sys_sendmsg+0x87/0xd0
[  176.251965]  ? do_wp_page+0x369/0xe90
[  176.252006]  ? nfulnl_rcv_nl_event+0x36/0xa0
[  176.252058]  ? fsnotify_grab_connector+0x48/0x80
[  176.252109]  ? fsnotify_destroy_marks+0x29/0x150
[  176.252156]  __sys_sendmsg+0x71/0xd0
[  176.252198]  do_syscall_64+0xa4/0xfd0
[  176.252244]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[  176.252303] RIP: 0033:0x7f1a1b3991d7
[  176.252349] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[  176.252471] RSP: 002b:00007ffec4c88508 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  176.252527] RAX: ffffffffffffffda RBX: 00007ffec4c88c30 RCX: 00007f1a1b3991d7
[  176.252597] RDX: 0000000000000000 RSI: 00007ffec4c88570 RDI: 0000000000000005
[  176.252652] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[  176.252702] R10: 00007f1a1b295f60 R11: 0000000000000246 R12: 0000000000000002
[  176.252752] R13: 00000000690de4c8 R14: 0000000000499600 R15: 0000000000000000
[  176.252820]  </TASK>
[  176.252843] ---[ end trace 0000000000000000 ]---
[  176.253596] ip (17274) used greatest stack depth: 11744 bytes left