unregister_netdevice: waiting for syz_tun to become free. Usage count = 10
ref_tracker: netdev@00000000a6a8bd2b has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4499 [inline]
     netdev_hold include/linux/netdevice.h:4528 [inline]
     dst_init+0xbc/0x42c net/core/dst.c:52
     dst_alloc+0x118/0x15c net/core/dst.c:94
     rt_dst_alloc+0x4c/0x240 net/ipv4/route.c:1649
     __mkroute_output net/ipv4/route.c:2652 [inline]
     ip_route_output_key_hash_rcu+0x108c/0x1c20 net/ipv4/route.c:2872
     ip_route_output_key_hash+0x180/0x2a0 net/ipv4/route.c:2702
     __ip_route_output_key include/net/route.h:169 [inline]
     ip_route_output_flow+0x3c/0x158 net/ipv4/route.c:2929
     ip_route_output_key include/net/route.h:179 [inline]
     geneve_link_config+0x16c/0x544 drivers/net/geneve.c:2280
     geneve_newlink+0x1b8/0x218 drivers/net/geneve.c:2339
     rtnl_newlink_create+0x290/0x764 net/core/rtnetlink.c:3913
     __rtnl_newlink net/core/rtnetlink.c:4044 [inline]
     rtnl_newlink+0xdc4/0x1144 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x66c/0x9bc net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x238/0x414 net/netlink/af_netlink.c:2556
     rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:7103
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x600/0x7f8 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x648/0x948 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec net/socket.c:775 [inline]
     __sock_sendmsg+0xc8/0x17c net/socket.c:790

ref_tracker: netdev@00000000a6a8bd2b has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4499 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4511 [inline]
     netdev_get_by_index+0x84/0xdc net/core/dev.c:1027
     fib6_nh_init+0x258/0x14f0 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x13c/0x98c net/ipv6/route.c:3914
     ip6_route_add+0x8c/0x1b4 net/ipv6/route.c:3966
     addrconf_prefix_route+0x1f4/0x2b8 net/ipv6/addrconf.c:2504
     addrconf_add_linklocal+0x238/0x378 net/ipv6/addrconf.c:3336
     addrconf_addr_gen+0x27c/0x2dc net/ipv6/addrconf.c:-1
     addrconf_init_auto_addrs+0x390/0x764 net/ipv6/addrconf.c:-1
     addrconf_notify+0x7a0/0xbe8 net/ipv6/addrconf.c:3775
     notifier_call_chain+0x1a4/0x624 kernel/notifier.c:85
     raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
     call_netdevice_notifiers_info+0xb8/0x120 net/core/dev.c:2250
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x160/0x27c net/core/dev.c:9799
     netif_change_flags+0xd0/0x15c net/core/dev.c:9828
     do_setlink+0xc28/0x31e8 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0xd24/0x1144 net/core/rtnetlink.c:4159

ref_tracker: netdev@00000000a6a8bd2b has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4499 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4511 [inline]
     netdev_get_by_index+0x84/0xdc net/core/dev.c:1027
     fib6_nh_init+0x258/0x14f0 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x13c/0x98c net/ipv6/route.c:3914
     addrconf_f6i_alloc+0x1e4/0x3b4 net/ipv6/route.c:4706
     ipv6_add_addr+0x484/0xdb0 net/ipv6/addrconf.c:1132
     addrconf_add_linklocal+0x1e0/0x378 net/ipv6/addrconf.c:3334
     addrconf_addr_gen+0x27c/0x2dc net/ipv6/addrconf.c:-1
     addrconf_init_auto_addrs+0x390/0x764 net/ipv6/addrconf.c:-1
     addrconf_notify+0x7a0/0xbe8 net/ipv6/addrconf.c:3775
     notifier_call_chain+0x1a4/0x624 kernel/notifier.c:85
     raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
     call_netdevice_notifiers_info+0xb8/0x120 net/core/dev.c:2250
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x160/0x27c net/core/dev.c:9799
     netif_change_flags+0xd0/0x15c net/core/dev.c:9828
     do_setlink+0xc28/0x31e8 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0xd24/0x1144 net/core/rtnetlink.c:4159

ref_tracker: netdev@00000000a6a8bd2b has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4499 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4511 [inline]
     netdev_get_by_index+0x84/0xdc net/core/dev.c:1027
     fib6_nh_init+0x258/0x14f0 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x13c/0x98c net/ipv6/route.c:3914
     ip6_route_add+0x8c/0x1b4 net/ipv6/route.c:3966
     addrconf_add_mroute+0x14c/0x1d0 net/ipv6/addrconf.c:2568
     addrconf_add_dev+0xe4/0x188 net/ipv6/addrconf.c:2586
     addrconf_dev_config net/ipv6/addrconf.c:3507 [inline]
     addrconf_init_auto_addrs+0x304/0x764 net/ipv6/addrconf.c:3595
     addrconf_notify+0x7a0/0xbe8 net/ipv6/addrconf.c:3775
     notifier_call_chain+0x1a4/0x624 kernel/notifier.c:85
     raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
     call_netdevice_notifiers_info+0xb8/0x120 net/core/dev.c:2250
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x160/0x27c net/core/dev.c:9799
     netif_change_flags+0xd0/0x15c net/core/dev.c:9828
     do_setlink+0xc28/0x31e8 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0xd24/0x1144 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x66c/0x9bc net/core/rtnetlink.c:7076

ref_tracker: netdev@00000000a6a8bd2b has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4499 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4511 [inline]
     netdev_get_by_index+0x84/0xdc net/core/dev.c:1027
     fib6_nh_init+0x258/0x14f0 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x13c/0x98c net/ipv6/route.c:3914
     ip6_route_add+0x8c/0x1b4 net/ipv6/route.c:3966
     addrconf_prefix_route+0x1f4/0x2b8 net/ipv6/addrconf.c:2504
     fixup_permanent_addr net/ipv6/addrconf.c:3626 [inline]
     addrconf_permanent_addr+0x590/0x80c net/ipv6/addrconf.c:3662
     addrconf_notify+0x690/0xbe8 net/ipv6/addrconf.c:3729
     notifier_call_chain+0x1a4/0x624 kernel/notifier.c:85
     raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
     call_netdevice_notifiers_info+0xb8/0x120 net/core/dev.c:2250
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x160/0x27c net/core/dev.c:9799
     netif_change_flags+0xd0/0x15c net/core/dev.c:9828
     do_setlink+0xc28/0x31e8 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0xd24/0x1144 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x66c/0x9bc net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x238/0x414 net/netlink/af_netlink.c:2556

ref_tracker: netdev@00000000a6a8bd2b has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4499 [inline]
     netdev_hold include/linux/netdevice.h:4528 [inline]
     fib_check_nh_nongw net/ipv4/fib_semantics.c:1259 [inline]
     fib_check_nh+0x9a0/0x15a8 net/ipv4/fib_semantics.c:1279
     fib_create_info+0x1428/0x2184 net/ipv4/fib_semantics.c:1499
     fib_table_insert+0xa4/0x12bc net/ipv4/fib_trie.c:1212
     fib_magic+0x26c/0x344 net/ipv4/fib_frontend.c:1128
     fib_add_ifaddr+0x330/0x500 net/ipv4/fib_frontend.c:1172
     fib_netdev_event+0x35c/0x49c net/ipv4/fib_frontend.c:1510
     notifier_call_chain+0x1a4/0x624 kernel/notifier.c:85
     raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
     call_netdevice_notifiers_info+0xb8/0x120 net/core/dev.c:2250
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x160/0x27c net/core/dev.c:9799
     netif_change_flags+0xd0/0x15c net/core/dev.c:9828
     do_setlink+0xc28/0x31e8 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0xd24/0x1144 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x66c/0x9bc net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x238/0x414 net/netlink/af_netlink.c:2556
     rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:7103

ref_tracker: netdev@00000000a6a8bd2b has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4499 [inline]
     netdev_hold include/linux/netdevice.h:4528 [inline]
     fib_check_nh_nongw net/ipv4/fib_semantics.c:1259 [inline]
     fib_check_nh+0x9a0/0x15a8 net/ipv4/fib_semantics.c:1279
     fib_create_info+0x1428/0x2184 net/ipv4/fib_semantics.c:1499
     fib_table_insert+0xa4/0x12bc net/ipv4/fib_trie.c:1212
     fib_magic+0x26c/0x344 net/ipv4/fib_frontend.c:1128
     fib_add_ifaddr+0x2e0/0x500 net/ipv4/fib_frontend.c:1165
     fib_netdev_event+0x35c/0x49c net/ipv4/fib_frontend.c:1510
     notifier_call_chain+0x1a4/0x624 kernel/notifier.c:85
     raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
     call_netdevice_notifiers_info+0xb8/0x120 net/core/dev.c:2250
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x160/0x27c net/core/dev.c:9799
     netif_change_flags+0xd0/0x15c net/core/dev.c:9828
     do_setlink+0xc28/0x31e8 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0xd24/0x1144 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x66c/0x9bc net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x238/0x414 net/netlink/af_netlink.c:2556
     rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:7103

ref_tracker: netdev@00000000a6a8bd2b has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4499 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4511 [inline]
     netdev_get_by_index+0x84/0xdc net/core/dev.c:1027
     fib6_nh_init+0x258/0x14f0 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x13c/0x98c net/ipv6/route.c:3914
     addrconf_f6i_alloc+0x1e4/0x3b4 net/ipv6/route.c:4706
     ipv6_add_addr+0x484/0xdb0 net/ipv6/addrconf.c:1132
     inet6_addr_add+0x298/0x77c net/ipv6/addrconf.c:3073
     inet6_rtm_newaddr+0x728/0xa40 net/ipv6/addrconf.c:5094
     rtnetlink_rcv_msg+0x66c/0x9bc net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x238/0x414 net/netlink/af_netlink.c:2556
     rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:7103
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x600/0x7f8 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x648/0x948 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec net/socket.c:775 [inline]
     __sock_sendmsg+0xc8/0x17c net/socket.c:790
     __sys_sendto+0x250/0x328 net/socket.c:2252
     __do_sys_sendto net/socket.c:2259 [inline]
     __se_sys_sendto net/socket.c:2255 [inline]
     __arm64_sys_sendto+0xec/0x10c net/socket.c:2255
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49

ref_tracker: netdev@00000000a6a8bd2b has 1/9 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_rtm_newaddr+0xb94/0x1130 net/ipv4/devinet.c:1001
     rtnetlink_rcv_msg+0x66c/0x9bc net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x238/0x414 net/netlink/af_netlink.c:2556
     rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:7103
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x600/0x7f8 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x648/0x948 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec net/socket.c:775 [inline]
     __sock_sendmsg+0xc8/0x17c net/socket.c:790