unregister_netdevice: waiting for syz_tun to become free. Usage count = 10
ref_tracker: netdev@ffff88802a3b4700 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4499 [inline]
     netdev_hold include/linux/netdevice.h:4528 [inline]
     dst_init+0xbe/0x470 net/core/dst.c:52
     dst_alloc+0x12a/0x170 net/core/dst.c:94
     rt_dst_alloc net/ipv4/route.c:1649 [inline]
     __mkroute_output net/ipv4/route.c:2652 [inline]
     ip_route_output_key_hash_rcu+0x14ac/0x2720 net/ipv4/route.c:2872
     ip_route_output_key_hash+0x18d/0x2a0 net/ipv4/route.c:2702
     __ip_route_output_key include/net/route.h:169 [inline]
     ip_route_output_flow+0x2a/0x150 net/ipv4/route.c:2929
     ip_route_output_key include/net/route.h:179 [inline]
     geneve_link_config+0x1a5/0x660 drivers/net/geneve.c:2262
     geneve_newlink+0x1f1/0x260 drivers/net/geneve.c:2321
     rtnl_newlink_create+0x310/0xb00 net/core/rtnetlink.c:3913
     __rtnl_newlink net/core/rtnetlink.c:4044 [inline]
     rtnl_newlink+0x167f/0x1bd0 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
     __sock_sendmsg net/socket.c:790 [inline]
     __sys_sendto+0x408/0x5a0 net/socket.c:2252
     __do_sys_sendto net/socket.c:2259 [inline]
     __se_sys_sendto net/socket.c:2255 [inline]
     __x64_sys_sendto+0xde/0x100 net/socket.c:2255

ref_tracker: netdev@ffff88802a3b4700 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+0x79/0xb0 net/core/dev.c:1027
     fib6_nh_init+0x285/0x1e40 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x16a/0xad0 net/ipv6/route.c:3914
     ip6_route_add+0x6e/0x1b0 net/ipv6/route.c:3966
     addrconf_prefix_route+0x3a2/0x480 net/ipv6/addrconf.c:2504
     addrconf_add_linklocal+0x266/0x460 net/ipv6/addrconf.c:3336
     addrconf_addr_gen+0x2f8/0x360 net/ipv6/addrconf.c:3470
     addrconf_notify+0xb1e/0x1050 net/ipv6/addrconf.c:3775
     notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x1aa/0x310 net/core/dev.c:9793
     netif_change_flags+0xde/0x1b0 net/core/dev.c:9822
     do_setlink+0xdd6/0x4670 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x15c2/0x1bd0 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345

ref_tracker: netdev@ffff88802a3b4700 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+0x79/0xb0 net/core/dev.c:1027
     fib6_nh_init+0x285/0x1e40 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x16a/0xad0 net/ipv6/route.c:3914
     addrconf_f6i_alloc+0x3b7/0x630 net/ipv6/route.c:4706
     ipv6_add_addr+0x59c/0x1110 net/ipv6/addrconf.c:1132
     addrconf_add_linklocal+0x20c/0x460 net/ipv6/addrconf.c:3334
     addrconf_addr_gen+0x2f8/0x360 net/ipv6/addrconf.c:3470
     addrconf_notify+0xb1e/0x1050 net/ipv6/addrconf.c:3775
     notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x1aa/0x310 net/core/dev.c:9793
     netif_change_flags+0xde/0x1b0 net/core/dev.c:9822
     do_setlink+0xdd6/0x4670 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x15c2/0x1bd0 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345

ref_tracker: netdev@ffff88802a3b4700 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+0x79/0xb0 net/core/dev.c:1027
     fib6_nh_init+0x285/0x1e40 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x16a/0xad0 net/ipv6/route.c:3914
     ip6_route_add+0x6e/0x1b0 net/ipv6/route.c:3966
     addrconf_add_mroute+0x2d1/0x370 net/ipv6/addrconf.c:2568
     addrconf_add_dev net/ipv6/addrconf.c:2586 [inline]
     addrconf_dev_config net/ipv6/addrconf.c:3507 [inline]
     addrconf_init_auto_addrs+0x4d7/0xa50 net/ipv6/addrconf.c:3595
     addrconf_notify+0xb1e/0x1050 net/ipv6/addrconf.c:3775
     notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x1aa/0x310 net/core/dev.c:9793
     netif_change_flags+0xde/0x1b0 net/core/dev.c:9822
     do_setlink+0xdd6/0x4670 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x15c2/0x1bd0 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900

ref_tracker: netdev@ffff88802a3b4700 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+0x79/0xb0 net/core/dev.c:1027
     fib6_nh_init+0x285/0x1e40 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x16a/0xad0 net/ipv6/route.c:3914
     ip6_route_add+0x6e/0x1b0 net/ipv6/route.c:3966
     addrconf_prefix_route+0x3a2/0x480 net/ipv6/addrconf.c:2504
     fixup_permanent_addr net/ipv6/addrconf.c:3626 [inline]
     addrconf_permanent_addr+0x713/0xa20 net/ipv6/addrconf.c:3662
     addrconf_notify+0x864/0x1050 net/ipv6/addrconf.c:3729
     notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x1aa/0x310 net/core/dev.c:9793
     netif_change_flags+0xde/0x1b0 net/core/dev.c:9822
     do_setlink+0xdd6/0x4670 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x15c2/0x1bd0 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900

ref_tracker: netdev@ffff88802a3b4700 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+0xcf1/0x1ac0 net/ipv4/fib_semantics.c:1279
     fib_create_info+0x200e/0x3170 net/ipv4/fib_semantics.c:1499
     fib_table_insert+0xcb/0x1b10 net/ipv4/fib_trie.c:1212
     fib_magic+0x43b/0x530 net/ipv4/fib_frontend.c:1128
     fib_add_ifaddr+0x3e6/0x5d0 net/ipv4/fib_frontend.c:1172
     fib_netdev_event+0x382/0x490 net/ipv4/fib_frontend.c:1510
     notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x1aa/0x310 net/core/dev.c:9793
     netif_change_flags+0xde/0x1b0 net/core/dev.c:9822
     do_setlink+0xdd6/0x4670 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x15c2/0x1bd0 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775

ref_tracker: netdev@ffff88802a3b4700 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+0xcf1/0x1ac0 net/ipv4/fib_semantics.c:1279
     fib_create_info+0x200e/0x3170 net/ipv4/fib_semantics.c:1499
     fib_table_insert+0xcb/0x1b10 net/ipv4/fib_trie.c:1212
     fib_magic+0x43b/0x530 net/ipv4/fib_frontend.c:1128
     fib_add_ifaddr+0x376/0x5d0 net/ipv4/fib_frontend.c:1165
     fib_netdev_event+0x382/0x490 net/ipv4/fib_frontend.c:1510
     notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
     call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
     call_netdevice_notifiers net/core/dev.c:2302 [inline]
     __dev_notify_flags+0x1aa/0x310 net/core/dev.c:9793
     netif_change_flags+0xde/0x1b0 net/core/dev.c:9822
     do_setlink+0xdd6/0x4670 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x15c2/0x1bd0 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775

ref_tracker: netdev@ffff88802a3b4700 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+0x79/0xb0 net/core/dev.c:1027
     fib6_nh_init+0x285/0x1e40 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x16a/0xad0 net/ipv6/route.c:3914
     addrconf_f6i_alloc+0x3b7/0x630 net/ipv6/route.c:4706
     ipv6_add_addr+0x59c/0x1110 net/ipv6/addrconf.c:1132
     inet6_addr_add+0x43c/0xb50 net/ipv6/addrconf.c:3073
     inet6_rtm_newaddr+0x9f3/0xdf0 net/ipv6/addrconf.c:5094
     rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
     __sock_sendmsg net/socket.c:790 [inline]
     __sys_sendto+0x408/0x5a0 net/socket.c:2252
     __do_sys_sendto net/socket.c:2259 [inline]
     __se_sys_sendto net/socket.c:2255 [inline]
     __x64_sys_sendto+0xde/0x100 net/socket.c:2255
     do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
     do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
     entry_SYSCALL_64_after_hwframe+0x77/0x7f

ref_tracker: netdev@ffff88802a3b4700 has 1/9 users at
     fib_create_info+0x2a72/0x3170 net/ipv4/fib_semantics.c:1493
     fib_table_insert+0xcb/0x1b10 net/ipv4/fib_trie.c:1212
     fib_magic+0x43b/0x530 net/ipv4/fib_frontend.c:1128
     fib_add_ifaddr+0x139/0x5d0 net/ipv4/fib_frontend.c:1150
     fib_inetaddr_event+0x12e/0x190 net/ipv4/fib_frontend.c:1464
     notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
     blocking_notifier_call_chain+0x6a/0x90 kernel/notifier.c:380
     __inet_insert_ifa+0x9ef/0xbc0 net/ipv4/devinet.c:566
     inet_rtm_newaddr+0x102d/0x19e0 net/ipv4/devinet.c:1001
     rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
     __sock_sendmsg net/socket.c:790 [inline]
     __sys_sendto+0x408/0x5a0 net/socket.c:2252
     __do_sys_sendto net/socket.c:2259 [inline]
     __se_sys_sendto net/socket.c:2255 [inline]
     __x64_sys_sendto+0xde/0x100 net/socket.c:2255