[ 1216.350686] ------------[ cut here ]------------
[ 1216.350794] rcuref - imbalanced put()
[ 1216.350795] WARNING: lib/rcuref.c:266 at 0x0, CPU#2: mausezahn/32660
[ 1216.350924] Modules linked in: vxlan l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core ip6t_rpfilter ip6_gre gre xfrm_interface nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 pktgen chacha libchacha chacha20poly1305 libpoly1305 tls cls_flower sch_prio xt_mark act_mirred cls_basic sch_fq_codel act_gact cls_matchall sch_ingress xfrm_user xt_policy ipt_REJECT nf_reject_ipv4 nft_compat nf_tables [last unloaded: test_bpf]
[ 1216.351211] CPU: 2 UID: 0 PID: 32660 Comm: mausezahn Not tainted 6.18.0-virtme #1 PREEMPT(voluntary) 
[ 1216.351299] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1216.351378] RIP: 0010:rcuref_put_slowpath+0x40/0x50
[ 1216.351445] Code: b1 17 0f 94 c0 75 0e 5b c3 81 fe ff ff ff bf 77 12 85 f6 78 04 31 c0 5b c3 c7 03 00 00 00 a0 31 c0 5b c3 48 8d 3d 20 32 2f 01 <67> 48 0f b9 3a 31 c0 c7 03 00 00 00 e0 eb de 90 f3 0f 1e fa 48 b8
[ 1216.351584] RSP: 0018:ffffb6c1003cb770 EFLAGS: 00010206
[ 1216.351644] RAX: 00000000dfffffff RBX: ffff97b2c95e7a00 RCX: ffff97b2c95e7a28
[ 1216.351721] RDX: ffff97b2fed2a408 RSI: 00000000dfffffff RDI: ffffffff9a47d4c0
[ 1216.351796] RBP: ffff97b2fed2a400 R08: ffff97b2c9a58400 R09: 0000000000000001
[ 1216.351872] R10: 0000000000000000 R11: 0000000000000002 R12: ffff97b2c95e79c0
[ 1216.351947] R13: 0000000000000000 R14: ffff97b2c9a58480 R15: 0000000000000001
[ 1216.352025] FS:  00007fc8ef0bb740(0000) GS:ffff97b364285000(0000) knlGS:0000000000000000
[ 1216.352110] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1216.352179] CR2: 00007fc8ef28faf0 CR3: 0000000003fd3003 CR4: 0000000000772ef0
[ 1216.352256] PKRU: 55555554
[ 1216.352300] Call Trace:
[ 1216.352350]  <TASK>
[ 1216.352395]  dst_release+0x88/0xb0
[ 1216.352451]  rt_cache_route+0xb3/0xe0
[ 1216.352506]  rt_set_nexthop.constprop.0+0x11e/0x360
[ 1216.352568]  ip_route_output_key_hash_rcu+0x244/0xa10
[ 1216.352629]  ip_route_output_flow+0x53/0xd0
[ 1216.352683]  udp_tunnel_dst_lookup+0x101/0x160
[ 1216.352749]  vxlan_xmit_one+0x9c4/0x1890 [vxlan]
[ 1216.352816]  ? vxlan_xmit+0x6c4/0x13d0 [vxlan]
[ 1216.352878]  vxlan_xmit+0x6c4/0x13d0 [vxlan]
[ 1216.352941]  ? update_load_avg+0x68/0x6e0
[ 1216.352998]  ? update_curr+0x108/0x140
[ 1216.353052]  ? update_entity_lag+0x15/0x70
[ 1216.353105]  ? dequeue_entities+0x11e/0x8a0
[ 1216.353158]  ? dev_hard_start_xmit+0x8a/0x1c0
[ 1216.353220]  dev_hard_start_xmit+0x8a/0x1c0
[ 1216.353274]  __dev_queue_xmit+0x7d4/0xf20
[ 1216.353331]  ? __alloc_skb+0xfc/0x1e0
[ 1216.353386]  ? _copy_from_iter+0x6f/0x6e0
[ 1216.353441]  ? alloc_skb_with_frags+0x48/0x1e0
[ 1216.353503]  ? packet_parse_headers+0xfe/0x220
[ 1216.353567]  packet_sendmsg+0x1159/0x1710
[ 1216.353621]  ? netdev_name_node_lookup_rcu+0x5d/0x70
[ 1216.353686]  __sys_sendto+0x12a/0x1b0
[ 1216.353742]  ? cpu_clock_sample_group+0x8d/0x120
[ 1216.353806]  __x64_sys_sendto+0x24/0x30
[ 1216.353860]  do_syscall_64+0xa4/0xfc0
[ 1216.353917]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1216.353979] RIP: 0033:0x7fc8ef2d727a
[ 1216.354031] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
[ 1216.354171] RSP: 002b:00007ffd0067cef8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 1216.354248] RAX: ffffffffffffffda RBX: 000000002399d9d0 RCX: 00007fc8ef2d727a
[ 1216.354331] RDX: 0000000000000064 RSI: 000000002399d5c2 RDI: 0000000000000005
[ 1216.354405] RBP: 000000002399d5c2 R08: 00007ffd0067cf00 R09: 0000000000000014
[ 1216.354482] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 1216.354559] R13: 0000000000000064 R14: 00007ffd0067cf00 R15: 0000000000000000
[ 1216.354635]  </TASK>
[ 1216.354678] ---[ end trace 0000000000000000 ]---
[ 1216.358847] mausezahn (32660) used greatest stack depth: 11712 bytes left