unregister_netdevice: waiting for syzkaller0 to become free. Usage count = 2
ref_tracker: netdev@00000000bd8aa5e8 has 1/1 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4499 [inline]
     netdev_tracker_alloc+0x68/0xb4 include/linux/netdevice.h:4511
     fib_create_info+0x15cc/0x2184 net/ipv4/fib_semantics.c:1493
     fib_table_insert+0xa4/0x12bc net/ipv4/fib_trie.c:1212
     fib_magic+0x26c/0x344 net/ipv4/fib_frontend.c:1128
     fib_add_ifaddr+0x114/0x500 net/ipv4/fib_frontend.c:1150
     fib_inetaddr_event+0x114/0x1c0 net/ipv4/fib_frontend.c:1464
     notifier_call_chain+0x1a4/0x624 kernel/notifier.c:85
     blocking_notifier_call_chain+0x70/0xa0 kernel/notifier.c:380
     __inet_insert_ifa+0x87c/0xa74 net/ipv4/devinet.c:566
     inet_insert_ifa+0x6c/0xa4 net/ipv4/devinet.c:578
     inet_set_ifa net/ipv4/devinet.c:590 [inline]
     devinet_ioctl+0xfc4/0x1788 net/ipv4/devinet.c:1242
     inet_ioctl+0x334/0x460 net/ipv4/af_inet.c:1009
     sock_do_ioctl+0x100/0x254 net/socket.c:1300
     sock_ioctl+0x55c/0x7ec net/socket.c:1421
     vfs_ioctl fs/ioctl.c:51 [inline]
     __do_sys_ioctl fs/ioctl.c:597 [inline]
     __se_sys_ioctl fs/ioctl.c:583 [inline]
     __arm64_sys_ioctl+0x154/0x1cc fs/ioctl.c:583
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49