unregister_netdevice: waiting for lo to become free. Usage count = 3
ref_tracker: netdev@ffff888174154610 has 1/1 users at
     ib_device_set_netdev+0x31f/0x6d0
     rxe_register_device+0x1bb/0x350
     rxe_net_add+0x81/0x110
     rxe_newlink+0xdd/0x190
     nldev_newlink+0x5bd/0x650
     rdma_nl_rcv+0x6f6/0xa40
     netlink_unicast+0x833/0x9f0
     netlink_sendmsg+0x813/0xb40
     ____sys_sendmsg+0xa67/0xad0
     ___sys_sendmsg+0x2a5/0x360
     __x64_sys_sendmsg+0x1bd/0x2a0
     do_syscall_64+0xf0/0xf80
     entry_SYSCALL_64_after_hwframe+0x77/0x7f

