unregister_netdevice: waiting for lo to become free. Usage count = 3330
ref_tracker: lo@ffff88807c3ae5b8 has 3329/3329 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4110 [inline]
     netdev_hold include/linux/netdevice.h:4139 [inline]
     dst_init+0xd9/0x460 net/core/dst.c:52
     dst_alloc+0x12e/0x170 net/core/dst.c:93
     rt_dst_alloc net/ipv4/route.c:1662 [inline]
     ip_route_input_slow net/ipv4/route.c:2400 [inline]
     ip_route_input_rcu+0x1f56/0x3010 net/ipv4/route.c:2514
     ip_route_input_noref+0x16f/0x260 net/ipv4/route.c:2525
     ip_rcv_finish_core+0x5a6/0x1bc0 net/ipv4/ip_input.c:365
     ip_list_rcv_finish net/ipv4/ip_input.c:613 [inline]
     ip_sublist_rcv+0x3e8/0xd20 net/ipv4/ip_input.c:639
     ip_list_rcv+0x3e3/0x430 net/ipv4/ip_input.c:674
     __netif_receive_skb_list_ptype net/core/dev.c:5651 [inline]
     __netif_receive_skb_list_core+0x578/0x740 net/core/dev.c:5699
     __netif_receive_skb_list net/core/dev.c:5751 [inline]
     netif_receive_skb_list_internal+0x91b/0xc60 net/core/dev.c:5842
     netif_receive_skb_list+0x54/0x400 net/core/dev.c:5894
     xdp_recv_frames net/bpf/test_run.c:277 [inline]
     xdp_test_run_batch net/bpf/test_run.c:355 [inline]
     bpf_test_run_xdp_live+0x1776/0x1a20 net/bpf/test_run.c:383
     bpf_prog_test_run_xdp+0x76c/0xfa0 net/bpf/test_run.c:1259
     bpf_prog_test_run+0x321/0x390 kernel/bpf/syscall.c:4129
     __sys_bpf+0x440/0x800 kernel/bpf/syscall.c:5491
     __do_sys_bpf kernel/bpf/syscall.c:5577 [inline]
     __se_sys_bpf kernel/bpf/syscall.c:5575 [inline]
     __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5575
     do_syscall_x64 arch/x86/entry/common.c:51 [inline]
     do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81