unregister_netdevice: waiting for syz_tun to become free. Usage count = 10
ref_tracker: netdev@ffff88803f9dc700 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4496 [inline]
     netdev_hold include/linux/netdevice.h:4525 [inline]
     dst_init+0xda/0x5b0 net/core/dst.c:52
     dst_alloc+0xbb/0x1a0 net/core/dst.c:94
     rt_dst_alloc+0x35/0x3a0 net/ipv4/route.c:1647
     __mkroute_output net/ipv4/route.c:2650 [inline]
     ip_route_output_key_hash_rcu+0x87a/0x2870 net/ipv4/route.c:2870
     ip_route_output_key_hash+0x118/0x2b0 net/ipv4/route.c:2700
     __ip_route_output_key include/net/route.h:169 [inline]
     ip_route_output_flow+0x27/0x150 net/ipv4/route.c:2927
     ip_route_output_key include/net/route.h:179 [inline]
     geneve_link_config.part.0+0x23e/0x5b0 drivers/net/geneve.c:2280
     geneve_link_config include/net/rtnetlink.h:95 [inline]
     geneve_newlink+0x326/0x380 drivers/net/geneve.c:2339
     rtnl_newlink_create net/core/rtnetlink.c:3913 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4044 [inline]
     rtnl_newlink+0x1499/0x2380 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec net/socket.c:775 [inline]
     __sock_sendmsg net/socket.c:790 [inline]
     __sys_sendto+0x48b/0x4e0 net/socket.c:2252
     __do_sys_sendto net/socket.c:2259 [inline]
     __se_sys_sendto net/socket.c:2255 [inline]
     __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2255
     do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
     do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94

ref_tracker: netdev@ffff88803f9dc700 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4496 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4508 [inline]
     netdev_get_by_index+0x7c/0xb0 net/core/dev.c:1027
     fib6_nh_init+0x657/0x1d80 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x50b/0xfe0 net/ipv6/route.c:3914
     ip6_route_add+0x80/0x1d0 net/ipv6/route.c:3966
     addrconf_prefix_route+0x2fb/0x510 net/ipv6/addrconf.c:2504
     addrconf_add_linklocal+0x329/0x500 net/ipv6/addrconf.c:3336
     addrconf_addr_gen+0x364/0x3b0 net/ipv6/addrconf.c:3470
     addrconf_dev_config net/ipv6/addrconf.c:3517 [inline]
     addrconf_init_auto_addrs+0x1cb/0x780 net/ipv6/addrconf.c:3595
     addrconf_notify+0x10af/0x1ba0 net/ipv6/addrconf.c:3775
     notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85
     call_netdevice_notifiers_info+0xbe/0x110 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+0x12c/0x2e0 net/core/dev.c:9799
     netif_change_flags+0x108/0x160 net/core/dev.c:9828
     do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x11c2/0x2380 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7076

ref_tracker: netdev@ffff88803f9dc700 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4496 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4508 [inline]
     netdev_get_by_index+0x7c/0xb0 net/core/dev.c:1027
     fib6_nh_init+0x657/0x1d80 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x50b/0xfe0 net/ipv6/route.c:3914
     addrconf_f6i_alloc+0x312/0x670 net/ipv6/route.c:4706
     ipv6_add_addr+0x580/0x1fb0 net/ipv6/addrconf.c:1132
     addrconf_add_linklocal+0x2a5/0x500 net/ipv6/addrconf.c:3334
     addrconf_addr_gen+0x364/0x3b0 net/ipv6/addrconf.c:3470
     addrconf_dev_config net/ipv6/addrconf.c:3517 [inline]
     addrconf_init_auto_addrs+0x1cb/0x780 net/ipv6/addrconf.c:3595
     addrconf_notify+0x10af/0x1ba0 net/ipv6/addrconf.c:3775
     notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85
     call_netdevice_notifiers_info+0xbe/0x110 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+0x12c/0x2e0 net/core/dev.c:9799
     netif_change_flags+0x108/0x160 net/core/dev.c:9828
     do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x11c2/0x2380 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7076

ref_tracker: netdev@ffff88803f9dc700 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4496 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4508 [inline]
     netdev_get_by_index+0x7c/0xb0 net/core/dev.c:1027
     fib6_nh_init+0x657/0x1d80 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x50b/0xfe0 net/ipv6/route.c:3914
     ip6_route_add+0x80/0x1d0 net/ipv6/route.c:3966
     addrconf_add_mroute+0x1de/0x350 net/ipv6/addrconf.c:2568
     addrconf_add_dev+0x14e/0x1a0 net/ipv6/addrconf.c:2586
     addrconf_dev_config net/ipv6/addrconf.c:3507 [inline]
     addrconf_init_auto_addrs+0x10e/0x780 net/ipv6/addrconf.c:3595
     addrconf_notify+0x10af/0x1ba0 net/ipv6/addrconf.c:3775
     notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85
     call_netdevice_notifiers_info+0xbe/0x110 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+0x12c/0x2e0 net/core/dev.c:9799
     netif_change_flags+0x108/0x160 net/core/dev.c:9828
     do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x11c2/0x2380 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556

ref_tracker: netdev@ffff88803f9dc700 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4496 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4508 [inline]
     netdev_get_by_index+0x7c/0xb0 net/core/dev.c:1027
     fib6_nh_init+0x657/0x1d80 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x50b/0xfe0 net/ipv6/route.c:3914
     ip6_route_add+0x80/0x1d0 net/ipv6/route.c:3966
     addrconf_prefix_route+0x2fb/0x510 net/ipv6/addrconf.c:2504
     fixup_permanent_addr net/ipv6/addrconf.c:3626 [inline]
     addrconf_permanent_addr net/ipv6/addrconf.c:3662 [inline]
     addrconf_notify+0x1548/0x1ba0 net/ipv6/addrconf.c:3729
     notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85
     call_netdevice_notifiers_info+0xbe/0x110 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+0x12c/0x2e0 net/core/dev.c:9799
     netif_change_flags+0x108/0x160 net/core/dev.c:9828
     do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x11c2/0x2380 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900

ref_tracker: netdev@ffff88803f9dc700 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4496 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4508 [inline]
     netdev_get_by_index+0x7c/0xb0 net/core/dev.c:1027
     fib6_nh_init+0x657/0x1d80 net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x50b/0xfe0 net/ipv6/route.c:3914
     addrconf_f6i_alloc+0x312/0x670 net/ipv6/route.c:4706
     fixup_permanent_addr net/ipv6/addrconf.c:3611 [inline]
     addrconf_permanent_addr net/ipv6/addrconf.c:3662 [inline]
     addrconf_notify+0x13c6/0x1ba0 net/ipv6/addrconf.c:3729
     notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85
     call_netdevice_notifiers_info+0xbe/0x110 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+0x12c/0x2e0 net/core/dev.c:9799
     netif_change_flags+0x108/0x160 net/core/dev.c:9828
     do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x11c2/0x2380 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec net/socket.c:775 [inline]
     __sock_sendmsg net/socket.c:790 [inline]
     __sys_sendto+0x48b/0x4e0 net/socket.c:2252

ref_tracker: netdev@ffff88803f9dc700 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4496 [inline]
     netdev_hold include/linux/netdevice.h:4525 [inline]
     netdev_hold include/linux/netdevice.h:4520 [inline]
     fib_check_nh_nongw net/ipv4/fib_semantics.c:1290 [inline]
     fib_check_nh+0x271/0x620 net/ipv4/fib_semantics.c:1310
     fib_create_info+0x218e/0x4640 net/ipv4/fib_semantics.c:1530
     fib_table_insert+0x169/0x1c70 net/ipv4/fib_trie.c:1212
     fib_magic+0x4d4/0x5c0 net/ipv4/fib_frontend.c:1128
     fib_add_ifaddr+0x4ba/0x560 net/ipv4/fib_frontend.c:1172
     fib_netdev_event+0x3d6/0x710 net/ipv4/fib_frontend.c:1510
     notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85
     call_netdevice_notifiers_info+0xbe/0x110 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+0x12c/0x2e0 net/core/dev.c:9799
     netif_change_flags+0x108/0x160 net/core/dev.c:9828
     do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x11c2/0x2380 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900

ref_tracker: netdev@ffff88803f9dc700 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4496 [inline]
     netdev_hold include/linux/netdevice.h:4525 [inline]
     netdev_hold include/linux/netdevice.h:4520 [inline]
     fib_check_nh_nongw net/ipv4/fib_semantics.c:1290 [inline]
     fib_check_nh+0x271/0x620 net/ipv4/fib_semantics.c:1310
     fib_create_info+0x218e/0x4640 net/ipv4/fib_semantics.c:1530
     fib_table_insert+0x169/0x1c70 net/ipv4/fib_trie.c:1212
     fib_magic+0x4d4/0x5c0 net/ipv4/fib_frontend.c:1128
     fib_add_ifaddr+0x3a1/0x560 net/ipv4/fib_frontend.c:1165
     fib_netdev_event+0x3d6/0x710 net/ipv4/fib_frontend.c:1510
     notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85
     call_netdevice_notifiers_info+0xbe/0x110 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+0x12c/0x2e0 net/core/dev.c:9799
     netif_change_flags+0x108/0x160 net/core/dev.c:9828
     do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3215
     rtnl_changelink net/core/rtnetlink.c:3849 [inline]
     __rtnl_newlink net/core/rtnetlink.c:4022 [inline]
     rtnl_newlink+0x11c2/0x2380 net/core/rtnetlink.c:4159
     rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900

ref_tracker: netdev@ffff88803f9dc700 has 1/9 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4496 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4508 [inline]
     fib_create_info+0x2b36/0x4640 net/ipv4/fib_semantics.c:1524
     fib_table_insert+0x169/0x1c70 net/ipv4/fib_trie.c:1212
     fib_magic+0x4d4/0x5c0 net/ipv4/fib_frontend.c:1128
     fib_add_ifaddr+0x16d/0x560 net/ipv4/fib_frontend.c:1150
     fib_inetaddr_event+0x147/0x270 net/ipv4/fib_frontend.c:1464
     notifier_call_chain+0x99/0x3f0 kernel/notifier.c:85
     blocking_notifier_call_chain kernel/notifier.c:380 [inline]
     blocking_notifier_call_chain+0x69/0xa0 kernel/notifier.c:368
     __inet_insert_ifa+0x91d/0xc70 net/ipv4/devinet.c:566
     inet_rtm_newaddr+0xea1/0x18b0 net/ipv4/devinet.c:1001
     rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:7076
     netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2556
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec net/socket.c:775 [inline]
     __sock_sendmsg net/socket.c:790 [inline]
     __sys_sendto+0x48b/0x4e0 net/socket.c:2252
     __do_sys_sendto net/socket.c:2259 [inline]
     __se_sys_sendto net/socket.c:2255 [inline]
     __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2255
     do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
     do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94