[ 4840.383308][   T72] unregister_netdevice: waiting for lo to become free. Usage count = 2
[ 4840.383737][   T72] ref_tracker: lo@ffff88800ade95e0 has 1/1 users at
[ 4840.383737][   T72]      dst_init+0x84/0x4a0
[ 4840.383737][   T72]      dst_alloc+0x97/0x150
[ 4840.383737][   T72]      rt_dst_alloc+0x31/0x3b0
[ 4840.383737][   T72]      ip_route_input_slow+0xe6d/0x1f60
[ 4840.383737][   T72]      ip_route_input_noref+0xe6/0x230
[ 4840.383737][   T72]      ip_rcv_finish_core.constprop.0+0x63e/0x1470
[ 4840.383737][   T72]      ip_rcv+0x197/0x740
[ 4840.383737][   T72]      __netif_receive_skb_one_core+0x166/0x1b0
[ 4840.383737][   T72]      process_backlog+0x103/0x670
[ 4840.383737][   T72]      __napi_poll.constprop.0+0xa2/0x460
[ 4840.383737][   T72]      net_rx_action+0x49f/0xc00
[ 4840.383737][   T72]      __do_softirq+0x1f8/0x5df
[ 4840.383737][   T72]