unregister_netdevice: waiting for wlan0 to become free. Usage count = 3
ref_tracker: wlan%d@ffff888030b04610 has 1/1 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4341 [inline]
     netdev_hold include/linux/netdevice.h:4370 [inline]
     ib_device_set_netdev+0x31f/0x6d0 drivers/infiniband/core/device.c:2216
     siw_device_create drivers/infiniband/sw/siw/siw_main.c:320 [inline]
     siw_newlink+0x405/0xd70 drivers/infiniband/sw/siw/siw_main.c:426
     nldev_newlink+0x4a2/0x5a0 drivers/infiniband/core/nldev.c:1796
     rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:-1 [inline]
     rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
     rdma_nl_rcv+0x6ae/0x980 drivers/infiniband/core/netlink.c:259
     netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
     netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339
     netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883
     sock_sendmsg_nosec net/socket.c:712 [inline]
     __sock_sendmsg+0x21c/0x270 net/socket.c:727
     ____sys_sendmsg+0x505/0x830 net/socket.c:2566
     ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620
     __sys_sendmsg net/socket.c:2652 [inline]
     __do_sys_sendmsg net/socket.c:2657 [inline]
     __se_sys_sendmsg net/socket.c:2655 [inline]
     __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2655
     do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
     do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
     entry_SYSCALL_64_after_hwframe+0x77/0x7f