unregister_netdevice: waiting for syz_tun to become free. Usage count = 2
ref_tracker: netdev@ffff888172e84658 has 1/1 users at
     fib_create_info+0x22e0/0x31f0
     fib_table_insert+0xc8/0x1b50
     fib_magic+0x434/0x510
     fib_add_ifaddr+0x144/0x5f0
     fib_inetaddr_event+0x12e/0x190
     notifier_call_chain+0x1ad/0x3d0
     blocking_notifier_call_chain+0x6a/0x90
     __inet_insert_ifa+0x9e9/0xbc0
     inet_rtm_newaddr+0x10d8/0x1ad0
     rtnetlink_rcv_msg+0x7d5/0xbe0
     netlink_rcv_skb+0x232/0x4b0
     netlink_unicast+0x75c/0x8e0
     netlink_sendmsg+0x813/0xb40
     __sys_sendto+0x672/0x710
     __x64_sys_sendto+0xde/0x100
     do_syscall_64+0x15f/0xf80

