unregister_netdevice: waiting for ipvlan0 to become free. Usage count = 2
ref_tracker: ipvlan0@ff6000002d8f85e8 has 1/1 users at
     ref_tracker_alloc+0x1c4/0x542 lib/ref_tracker.c:209
     __netdev_tracker_alloc include/linux/netdevice.h:4050 [inline]
     netdev_hold include/linux/netdevice.h:4079 [inline]
     netdev_hold include/linux/netdevice.h:4074 [inline]
     ib_device_set_netdev drivers/infiniband/core/device.c:2216 [inline]
     ib_device_set_netdev+0x2c4/0x6de drivers/infiniband/core/device.c:2185
     rxe_register_device+0x2ac/0x404 drivers/infiniband/sw/rxe/rxe_verbs.c:1516
     rxe_add+0xefa/0x1216 drivers/infiniband/sw/rxe/rxe.c:175
     rxe_net_add+0xac/0x10e drivers/infiniband/sw/rxe/rxe_net.c:542
     rxe_newlink+0x70/0x1c8 drivers/infiniband/sw/rxe/rxe.c:197
     nldev_newlink+0x338/0x59a drivers/infiniband/core/nldev.c:1795
     rdma_nl_rcv_msg+0x352/0x680 drivers/infiniband/core/netlink.c:195
     rdma_nl_rcv_skb.constprop.0.isra.0+0x328/0x424 drivers/infiniband/core/netlink.c:239
     rdma_nl_rcv+0x1a/0x24 drivers/infiniband/core/netlink.c:259
     netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
     netlink_unicast+0x4f0/0x82c net/netlink/af_netlink.c:1357
     netlink_sendmsg+0x864/0xdc6 net/netlink/af_netlink.c:1901
     sock_sendmsg_nosec net/socket.c:729 [inline]
     __sock_sendmsg+0xcc/0x160 net/socket.c:744
     ____sys_sendmsg+0x5ce/0x79e net/socket.c:2602
     ___sys_sendmsg+0x144/0x1e6 net/socket.c:2656
     __sys_sendmsg+0x130/0x1f0 net/socket.c:2685