unregister_netdevice: waiting for syz_tun to become free. Usage count = 10
ref_tracker: netdev@000000000f5953a2 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline]
     netdev_hold include/linux/netdevice.h:4378 [inline]
     dst_init+0x64/0x140 net/core/dst.c:52
     dst_alloc+0x5c/0x98 net/core/dst.c:93
     rt_dst_alloc+0x40/0xac net/ipv4/route.c:1645
     __mkroute_output net/ipv4/route.c:2649 [inline]
     ip_route_output_key_hash_rcu+0x3ac/0x798 net/ipv4/route.c:2870
     ip_route_output_key_hash net/ipv4/route.c:2700 [inline]
     __ip_route_output_key include/net/route.h:169 [inline]
     ip_route_output_flow+0x68/0xe0 net/ipv4/route.c:2927
     ip_route_output_key include/net/route.h:179 [inline]
     geneve_link_config.part.0+0x9c/0x12c drivers/net/geneve.c:1620
     geneve_link_config include/net/rtnetlink.h:95 [inline]
     geneve_newlink+0x110/0x118 drivers/net/geneve.c:1678
     rtnl_newlink_create net/core/rtnetlink.c:3825 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3942 [inline]
     rtnl_newlink+0x518/0xa00 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x304/0x398 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x5c/0x128 net/netlink/af_netlink.c:2552
     rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6973
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x1e4/0x314 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x194/0x3fc net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:714 [inline]
     __sock_sendmsg+0x54/0x60 net/socket.c:729
     __sys_sendto+0x118/0x180 net/socket.c:2228
     __do_sys_sendto net/socket.c:2235 [inline]
     __se_sys_sendto net/socket.c:2231 [inline]
     __arm64_sys_sendto+0x28/0x38 net/socket.c:2231

ref_tracker: netdev@000000000f5953a2 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4361 [inline]
     netdev_get_by_index+0x50/0x94 net/core/dev.c:1008
     fib6_nh_init+0x1a0/0x9a8 net/ipv6/route.c:3592
     ip6_route_info_create_nh+0x110/0x35c net/ipv6/route.c:3892
     ip6_route_add.part.0+0x40/0x160 net/ipv6/route.c:3944
     ip6_route_add+0x3c/0x50 net/ipv6/route.c:3937
     addrconf_prefix_route+0xdc/0x130 net/ipv6/addrconf.c:2488
     addrconf_add_linklocal+0xcc/0x27c net/ipv6/addrconf.c:3313
     addrconf_addr_gen+0x124/0x12c net/ipv6/addrconf.c:3442
     addrconf_dev_config net/ipv6/addrconf.c:3489 [inline]
     addrconf_init_auto_addrs+0x194/0x2c4 net/ipv6/addrconf.c:3567
     addrconf_notify+0x550/0x7b4 net/ipv6/addrconf.c:3740
     notifier_call_chain kernel/notifier.c:85 [inline]
     raw_notifier_call_chain+0x54/0x74 kernel/notifier.c:453
     call_netdevice_notifiers_info+0x58/0xa4 net/core/dev.c:2229
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x48/0xdc net/core/dev.c:9588
     netif_change_flags+0x54/0x6c net/core/dev.c:9617
     do_setlink.constprop.0+0x6b8/0xfd8 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x6ac/0xa00 net/core/rtnetlink.c:4057

ref_tracker: netdev@000000000f5953a2 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4361 [inline]
     netdev_get_by_index+0x50/0x94 net/core/dev.c:1008
     fib6_nh_init+0x1a0/0x9a8 net/ipv6/route.c:3592
     ip6_route_info_create_nh+0x110/0x35c net/ipv6/route.c:3892
     addrconf_f6i_alloc+0x104/0x184 net/ipv6/route.c:4684
     ipv6_add_addr+0x164/0x680 net/ipv6/addrconf.c:1126
     addrconf_add_linklocal+0x9c/0x27c net/ipv6/addrconf.c:3311
     addrconf_addr_gen+0x124/0x12c net/ipv6/addrconf.c:3442
     addrconf_dev_config net/ipv6/addrconf.c:3489 [inline]
     addrconf_init_auto_addrs+0x194/0x2c4 net/ipv6/addrconf.c:3567
     addrconf_notify+0x550/0x7b4 net/ipv6/addrconf.c:3740
     notifier_call_chain kernel/notifier.c:85 [inline]
     raw_notifier_call_chain+0x54/0x74 kernel/notifier.c:453
     call_netdevice_notifiers_info+0x58/0xa4 net/core/dev.c:2229
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x48/0xdc net/core/dev.c:9588
     netif_change_flags+0x54/0x6c net/core/dev.c:9617
     do_setlink.constprop.0+0x6b8/0xfd8 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x6ac/0xa00 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x304/0x398 net/core/rtnetlink.c:6946

ref_tracker: netdev@000000000f5953a2 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4361 [inline]
     netdev_get_by_index+0x50/0x94 net/core/dev.c:1008
     fib6_nh_init+0x1a0/0x9a8 net/ipv6/route.c:3592
     ip6_route_info_create_nh+0x110/0x35c net/ipv6/route.c:3892
     ip6_route_add.part.0+0x40/0x160 net/ipv6/route.c:3944
     ip6_route_add+0x3c/0x50 net/ipv6/route.c:3937
     addrconf_add_mroute+0xa4/0xd0 net/ipv6/addrconf.c:2552
     addrconf_add_dev+0x7c/0xb8 net/ipv6/addrconf.c:2570
     addrconf_dev_config net/ipv6/addrconf.c:3479 [inline]
     addrconf_init_auto_addrs+0x164/0x2c4 net/ipv6/addrconf.c:3567
     addrconf_notify+0x550/0x7b4 net/ipv6/addrconf.c:3740
     notifier_call_chain kernel/notifier.c:85 [inline]
     raw_notifier_call_chain+0x54/0x74 kernel/notifier.c:453
     call_netdevice_notifiers_info+0x58/0xa4 net/core/dev.c:2229
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x48/0xdc net/core/dev.c:9588
     netif_change_flags+0x54/0x6c net/core/dev.c:9617
     do_setlink.constprop.0+0x6b8/0xfd8 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x6ac/0xa00 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x304/0x398 net/core/rtnetlink.c:6946

ref_tracker: netdev@000000000f5953a2 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4361 [inline]
     netdev_get_by_index+0x50/0x94 net/core/dev.c:1008
     fib6_nh_init+0x1a0/0x9a8 net/ipv6/route.c:3592
     ip6_route_info_create_nh+0x110/0x35c net/ipv6/route.c:3892
     ip6_route_add.part.0+0x40/0x160 net/ipv6/route.c:3944
     ip6_route_add+0x3c/0x50 net/ipv6/route.c:3937
     addrconf_prefix_route+0xdc/0x130 net/ipv6/addrconf.c:2488
     fixup_permanent_addr net/ipv6/addrconf.c:3598 [inline]
     addrconf_permanent_addr net/ipv6/addrconf.c:3622 [inline]
     addrconf_notify+0x580/0x7b4 net/ipv6/addrconf.c:3694
     notifier_call_chain kernel/notifier.c:85 [inline]
     raw_notifier_call_chain+0x54/0x74 kernel/notifier.c:453
     call_netdevice_notifiers_info+0x58/0xa4 net/core/dev.c:2229
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x48/0xdc net/core/dev.c:9588
     netif_change_flags+0x54/0x6c net/core/dev.c:9617
     do_setlink.constprop.0+0x6b8/0xfd8 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x6ac/0xa00 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x304/0x398 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x5c/0x128 net/netlink/af_netlink.c:2552
     rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6973

ref_tracker: netdev@000000000f5953a2 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline]
     netdev_hold include/linux/netdevice.h:4378 [inline]
     netdev_hold include/linux/netdevice.h:4373 [inline]
     fib_check_nh_nongw net/ipv4/fib_semantics.c:1263 [inline]
     fib_check_nh+0x98/0x1ac net/ipv4/fib_semantics.c:1283
     fib_create_info+0x7c8/0xd08 net/ipv4/fib_semantics.c:1503
     fib_table_insert+0x64/0x5ac net/ipv4/fib_trie.c:1212
     fib_magic+0x138/0x160 net/ipv4/fib_frontend.c:1133
     fib_add_ifaddr+0x168/0x17c net/ipv4/fib_frontend.c:1177
     fib_netdev_event+0xd0/0x1e4 net/ipv4/fib_frontend.c:1515
     notifier_call_chain kernel/notifier.c:85 [inline]
     raw_notifier_call_chain+0x54/0x74 kernel/notifier.c:453
     call_netdevice_notifiers_info+0x58/0xa4 net/core/dev.c:2229
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x48/0xdc net/core/dev.c:9588
     netif_change_flags+0x54/0x6c net/core/dev.c:9617
     do_setlink.constprop.0+0x6b8/0xfd8 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x6ac/0xa00 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x304/0x398 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x5c/0x128 net/netlink/af_netlink.c:2552
     rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6973
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x1e4/0x314 net/netlink/af_netlink.c:1346

ref_tracker: netdev@000000000f5953a2 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline]
     netdev_hold include/linux/netdevice.h:4378 [inline]
     netdev_hold include/linux/netdevice.h:4373 [inline]
     fib_check_nh_nongw net/ipv4/fib_semantics.c:1263 [inline]
     fib_check_nh+0x98/0x1ac net/ipv4/fib_semantics.c:1283
     fib_create_info+0x7c8/0xd08 net/ipv4/fib_semantics.c:1503
     fib_table_insert+0x64/0x5ac net/ipv4/fib_trie.c:1212
     fib_magic+0x138/0x160 net/ipv4/fib_frontend.c:1133
     fib_add_ifaddr+0xc0/0x17c net/ipv4/fib_frontend.c:1170
     fib_netdev_event+0xd0/0x1e4 net/ipv4/fib_frontend.c:1515
     notifier_call_chain kernel/notifier.c:85 [inline]
     raw_notifier_call_chain+0x54/0x74 kernel/notifier.c:453
     call_netdevice_notifiers_info+0x58/0xa4 net/core/dev.c:2229
     call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
     call_netdevice_notifiers net/core/dev.c:2281 [inline]
     __dev_notify_flags+0x48/0xdc net/core/dev.c:9588
     netif_change_flags+0x54/0x6c net/core/dev.c:9617
     do_setlink.constprop.0+0x6b8/0xfd8 net/core/rtnetlink.c:3143
     rtnl_changelink net/core/rtnetlink.c:3761 [inline]
     __rtnl_newlink net/core/rtnetlink.c:3920 [inline]
     rtnl_newlink+0x6ac/0xa00 net/core/rtnetlink.c:4057
     rtnetlink_rcv_msg+0x304/0x398 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x5c/0x128 net/netlink/af_netlink.c:2552
     rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6973
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x1e4/0x314 net/netlink/af_netlink.c:1346

ref_tracker: netdev@000000000f5953a2 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4361 [inline]
     netdev_get_by_index+0x50/0x94 net/core/dev.c:1008
     fib6_nh_init+0x1a0/0x9a8 net/ipv6/route.c:3592
     ip6_route_info_create_nh+0x110/0x35c net/ipv6/route.c:3892
     addrconf_f6i_alloc+0x104/0x184 net/ipv6/route.c:4684
     ipv6_add_addr+0x164/0x680 net/ipv6/addrconf.c:1126
     inet6_addr_add+0xbc/0x2d0 net/ipv6/addrconf.c:3050
     inet6_rtm_newaddr+0x6ac/0x78c net/ipv6/addrconf.c:5059
     rtnetlink_rcv_msg+0x304/0x398 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x5c/0x128 net/netlink/af_netlink.c:2552
     rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6973
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x1e4/0x314 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x194/0x3fc net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:714 [inline]
     __sock_sendmsg+0x54/0x60 net/socket.c:729
     __sys_sendto+0x118/0x180 net/socket.c:2228
     __do_sys_sendto net/socket.c:2235 [inline]
     __se_sys_sendto net/socket.c:2231 [inline]
     __arm64_sys_sendto+0x28/0x38 net/socket.c:2231
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49

ref_tracker: netdev@000000000f5953a2 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4361 [inline]
     fib_create_info+0xa2c/0xd08 net/ipv4/fib_semantics.c:1497
     fib_table_insert+0x64/0x5ac net/ipv4/fib_trie.c:1212
     fib_magic+0x138/0x160 net/ipv4/fib_frontend.c:1133
     fib_add_ifaddr+0x6c/0x17c net/ipv4/fib_frontend.c:1155
     fib_inetaddr_event+0x60/0x110 net/ipv4/fib_frontend.c:1469
     notifier_call_chain kernel/notifier.c:85 [inline]
     blocking_notifier_call_chain kernel/notifier.c:380 [inline]
     blocking_notifier_call_chain+0x6c/0xa0 kernel/notifier.c:368
     __inet_insert_ifa+0x22c/0x304 net/ipv4/devinet.c:566
     inet_rtm_newaddr+0x37c/0x454 net/ipv4/devinet.c:1001
     rtnetlink_rcv_msg+0x304/0x398 net/core/rtnetlink.c:6946
     netlink_rcv_skb+0x5c/0x128 net/netlink/af_netlink.c:2552
     rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6973
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x1e4/0x314 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x194/0x3fc net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:714 [inline]
     __sock_sendmsg+0x54/0x60 net/socket.c:729
     __sys_sendto+0x118/0x180 net/socket.c:2228
     __do_sys_sendto net/socket.c:2235 [inline]
     __se_sys_sendto net/socket.c:2231 [inline]
     __arm64_sys_sendto+0x28/0x38 net/socket.c:2231