unregister_netdevice: waiting for syz_tun to become free. Usage count = 10
ref_tracker: netdev@ffff88811a4b8610 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4346 [inline]
     netdev_hold include/linux/netdevice.h:4375 [inline]
     dst_init+0xd9/0x450 net/core/dst.c:52
     dst_alloc+0x12a/0x170 net/core/dst.c:93
     rt_dst_alloc net/ipv4/route.c:1645 [inline]
     __mkroute_output net/ipv4/route.c:2645 [inline]
     ip_route_output_key_hash_rcu+0x14e1/0x23d0 net/ipv4/route.c:2866
     ip_route_output_key_hash+0x1b9/0x2e0 net/ipv4/route.c:2696
     __ip_route_output_key include/net/route.h:169 [inline]
     ip_route_output_flow+0x2a/0x150 net/ipv4/route.c:2923
     ip_route_output_key include/net/route.h:179 [inline]
     geneve_link_config+0x195/0x5f0 drivers/net/geneve.c:1620
     geneve_newlink+0x1ba/0x220 drivers/net/geneve.c:1678
     rtnl_newlink_create+0x310/0xb00 net/core/rtnetlink.c:3825
     __rtnl_newlink net/core/rtnetlink.c:3942 [inline]
     rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:714 [inline]
     __sock_sendmsg+0x21c/0x270 net/socket.c:729
     __sys_sendto+0x3bd/0x520 net/socket.c:2228
     __do_sys_sendto net/socket.c:2235 [inline]
     __se_sys_sendto net/socket.c:2231 [inline]
     __x64_sys_sendto+0xde/0x100 net/socket.c:2231

ref_tracker: netdev@ffff88811a4b8610 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4346 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4358 [inline]
     netdev_get_by_index+0x79/0xb0 net/core/dev.c:1008
     fib6_nh_init+0x1cd/0x1ff0 net/ipv6/route.c:3592
     ip6_route_info_create_nh+0x16a/0xab0 net/ipv6/route.c:3892
     ip6_route_add+0x6e/0x1b0 net/ipv6/route.c:3944
     addrconf_prefix_route net/ipv6/addrconf.c:2488 [inline]
     addrconf_add_linklocal+0x45f/0x6c0 net/ipv6/addrconf.c:3313
     addrconf_addr_gen+0x490/0x580 net/ipv6/addrconf.c:3442
     addrconf_init_auto_addrs+0x62d/0xa30 net/ipv6/addrconf.c:-1
     addrconf_notify+0xacc/0x1010 net/ipv6/addrconf.c:3740
     notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x18d/0x2e0 net/core/dev.c:-1
     netif_change_flags+0xe8/0x1a0 net/core/dev.c:9608
     do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346

ref_tracker: netdev@ffff88811a4b8610 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4346 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4358 [inline]
     netdev_get_by_index+0x79/0xb0 net/core/dev.c:1008
     fib6_nh_init+0x1cd/0x1ff0 net/ipv6/route.c:3592
     ip6_route_info_create_nh+0x16a/0xab0 net/ipv6/route.c:3892
     addrconf_f6i_alloc+0x203/0x450 net/ipv6/route.c:4684
     ipv6_add_addr+0x56e/0x1090 net/ipv6/addrconf.c:1126
     addrconf_add_linklocal+0x28c/0x6c0 net/ipv6/addrconf.c:3311
     addrconf_addr_gen+0x490/0x580 net/ipv6/addrconf.c:3442
     addrconf_init_auto_addrs+0x62d/0xa30 net/ipv6/addrconf.c:-1
     addrconf_notify+0xacc/0x1010 net/ipv6/addrconf.c:3740
     notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x18d/0x2e0 net/core/dev.c:-1
     netif_change_flags+0xe8/0x1a0 net/core/dev.c:9608
     do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552

ref_tracker: netdev@ffff88811a4b8610 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4346 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4358 [inline]
     netdev_get_by_index+0x79/0xb0 net/core/dev.c:1008
     fib6_nh_init+0x1cd/0x1ff0 net/ipv6/route.c:3592
     ip6_route_info_create_nh+0x16a/0xab0 net/ipv6/route.c:3892
     ip6_route_add+0x6e/0x1b0 net/ipv6/route.c:3944
     addrconf_add_mroute net/ipv6/addrconf.c:2552 [inline]
     addrconf_add_dev+0x24f/0x340 net/ipv6/addrconf.c:2570
     addrconf_dev_config net/ipv6/addrconf.c:3479 [inline]
     addrconf_init_auto_addrs+0x57c/0xa30 net/ipv6/addrconf.c:3567
     addrconf_notify+0xacc/0x1010 net/ipv6/addrconf.c:3740
     notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x18d/0x2e0 net/core/dev.c:-1
     netif_change_flags+0xe8/0x1a0 net/core/dev.c:9608
     do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896

ref_tracker: netdev@ffff88811a4b8610 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4346 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4358 [inline]
     netdev_get_by_index+0x79/0xb0 net/core/dev.c:1008
     fib6_nh_init+0x1cd/0x1ff0 net/ipv6/route.c:3592
     ip6_route_info_create_nh+0x16a/0xab0 net/ipv6/route.c:3892
     ip6_route_add+0x6e/0x1b0 net/ipv6/route.c:3944
     addrconf_prefix_route net/ipv6/addrconf.c:2488 [inline]
     fixup_permanent_addr net/ipv6/addrconf.c:3598 [inline]
     addrconf_permanent_addr+0x67f/0x9d0 net/ipv6/addrconf.c:3622
     addrconf_notify+0x887/0x1010 net/ipv6/addrconf.c:3694
     notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x18d/0x2e0 net/core/dev.c:-1
     netif_change_flags+0xe8/0x1a0 net/core/dev.c:9608
     do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:714 [inline]
     __sock_sendmsg+0x21c/0x270 net/socket.c:729

ref_tracker: netdev@ffff88811a4b8610 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4346 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4358 [inline]
     netdev_get_by_index+0x79/0xb0 net/core/dev.c:1008
     fib6_nh_init+0x1cd/0x1ff0 net/ipv6/route.c:3592
     ip6_route_info_create_nh+0x16a/0xab0 net/ipv6/route.c:3892
     addrconf_f6i_alloc+0x203/0x450 net/ipv6/route.c:4684
     fixup_permanent_addr net/ipv6/addrconf.c:3583 [inline]
     addrconf_permanent_addr+0x274/0x9d0 net/ipv6/addrconf.c:3622
     addrconf_notify+0x887/0x1010 net/ipv6/addrconf.c:3694
     notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x18d/0x2e0 net/core/dev.c:-1
     netif_change_flags+0xe8/0x1a0 net/core/dev.c:9608
     do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:714 [inline]
     __sock_sendmsg+0x21c/0x270 net/socket.c:729

ref_tracker: netdev@ffff88811a4b8610 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4346 [inline]
     netdev_hold include/linux/netdevice.h:4375 [inline]
     fib_check_nh_nongw net/ipv4/fib_semantics.c:1263 [inline]
     fib_check_nh+0xc46/0x1910 net/ipv4/fib_semantics.c:1283
     fib_create_info+0x209d/0x3210 net/ipv4/fib_semantics.c:1503
     fib_table_insert+0xc6/0x1b50 net/ipv4/fib_trie.c:1212
     fib_magic+0x2c4/0x390 net/ipv4/fib_frontend.c:1133
     fib_add_ifaddr+0x3fb/0x5f0 net/ipv4/fib_frontend.c:1177
     fib_netdev_event+0x382/0x490 net/ipv4/fib_frontend.c:1515
     notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x18d/0x2e0 net/core/dev.c:-1
     netif_change_flags+0xe8/0x1a0 net/core/dev.c:9608
     do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:714 [inline]
     __sock_sendmsg+0x21c/0x270 net/socket.c:729

ref_tracker: netdev@ffff88811a4b8610 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4346 [inline]
     netdev_hold include/linux/netdevice.h:4375 [inline]
     fib_check_nh_nongw net/ipv4/fib_semantics.c:1263 [inline]
     fib_check_nh+0xc46/0x1910 net/ipv4/fib_semantics.c:1283
     fib_create_info+0x209d/0x3210 net/ipv4/fib_semantics.c:1503
     fib_table_insert+0xc6/0x1b50 net/ipv4/fib_trie.c:1212
     fib_magic+0x2c4/0x390 net/ipv4/fib_frontend.c:1133
     fib_add_ifaddr+0x38d/0x5f0 net/ipv4/fib_frontend.c:1170
     fib_netdev_event+0x382/0x490 net/ipv4/fib_frontend.c:1515
     notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x18d/0x2e0 net/core/dev.c:-1
     netif_change_flags+0xe8/0x1a0 net/core/dev.c:9608
     do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:714 [inline]
     __sock_sendmsg+0x21c/0x270 net/socket.c:729

ref_tracker: netdev@ffff88811a4b8610 has 1/9 users at
     fib_create_info+0x22f1/0x3210 net/ipv4/fib_semantics.c:1497
     fib_table_insert+0xc6/0x1b50 net/ipv4/fib_trie.c:1212
     fib_magic+0x2c4/0x390 net/ipv4/fib_frontend.c:1133
     fib_add_ifaddr+0x144/0x5f0 net/ipv4/fib_frontend.c:1155
     fib_inetaddr_event+0x12e/0x190 net/ipv4/fib_frontend.c:1469
     notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
     blocking_notifier_call_chain+0x6a/0x90 kernel/notifier.c:380
     __inet_insert_ifa+0xa13/0xbf0 net/ipv4/devinet.c:567
     inet_rtm_newaddr+0xf3a/0x18b0 net/ipv4/devinet.c:1002
     rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:714 [inline]
     __sock_sendmsg+0x21c/0x270 net/socket.c:729
     __sys_sendto+0x3bd/0x520 net/socket.c:2228
     __do_sys_sendto net/socket.c:2235 [inline]
     __se_sys_sendto net/socket.c:2231 [inline]
     __x64_sys_sendto+0xde/0x100 net/socket.c:2231

