unregister_netdevice: waiting for veth0_virt_wifi to become free. Usage count = 2
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline]
 netdev_hold include/linux/netdevice.h:4099 [inline]
 netdev_hold include/linux/netdevice.h:4094 [inline]
 ib_device_set_netdev drivers/infiniband/core/device.c:2165 [inline]
 ib_device_set_netdev+0x257/0x750 drivers/infiniband/core/device.c:2134
 siw_device_create drivers/infiniband/sw/siw/siw_main.c:353 [inline]
 siw_newlink drivers/infiniband/sw/siw/siw_main.c:513 [inline]
 siw_newlink+0x507/0x1040 drivers/infiniband/sw/siw/siw_main.c:499
 nldev_newlink+0x332/0x5e0 drivers/infiniband/core/nldev.c:1731
 rdma_nl_rcv_msg+0x371/0x6a0 drivers/infiniband/core/netlink.c:195
 rdma_nl_rcv_skb.constprop.0.isra.0+0x2fc/0x440 drivers/infiniband/core/netlink.c:239
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1913
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg+0xde/0x190 net/socket.c:747
 ____sys_sendmsg+0x71c/0x900 net/socket.c:2503
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2557
 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2586
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd