unregister_netdevice: waiting for syz_tun to become free. Usage count = 54 leaked reference. __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline] netdev_tracker_alloc include/linux/netdevice.h:4082 [inline] fib6_nh_init+0x816/0x21e0 net/ipv6/route.c:3613 ip6_route_info_create+0x9c4/0x12c0 net/ipv6/route.c:3791 ip6_route_add+0x26/0x120 net/ipv6/route.c:3835 addrconf_prefix_route net/ipv6/addrconf.c:2425 [inline] addrconf_add_linklocal+0x629/0xae0 net/ipv6/addrconf.c:3217 addrconf_addr_gen+0x7fa/0xb60 addrconf_dev_config net/ipv6/addrconf.c:3391 [inline] addrconf_init_auto_addrs+0x96a/0xe90 net/ipv6/addrconf.c:3469 addrconf_notify+0xb59/0xfe0 net/ipv6/addrconf.c:3642 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 __dev_notify_flags+0x359/0x650 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8643 do_setlink+0xe93/0x2ae0 net/core/rtnetlink.c:2836 rtnl_group_changelink net/core/rtnetlink.c:3380 [inline] __rtnl_newlink net/core/rtnetlink.c:3636 [inline] rtnl_newlink+0x10b9/0x2010 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x825/0xf40 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2546 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1913 leaked reference. __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline] netdev_tracker_alloc include/linux/netdevice.h:4082 [inline] fib6_nh_init+0x816/0x21e0 net/ipv6/route.c:3613 ip6_route_info_create+0x9c4/0x12c0 net/ipv6/route.c:3791 ip6_route_add+0x26/0x120 net/ipv6/route.c:3835 addrconf_add_mroute net/ipv6/addrconf.c:2489 [inline] addrconf_add_dev+0x354/0x500 net/ipv6/addrconf.c:2507 addrconf_dev_config net/ipv6/addrconf.c:3382 [inline] addrconf_init_auto_addrs+0x85f/0xe90 net/ipv6/addrconf.c:3469 addrconf_notify+0xb59/0xfe0 net/ipv6/addrconf.c:3642 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 __dev_notify_flags+0x359/0x650 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8643 do_setlink+0xe93/0x2ae0 net/core/rtnetlink.c:2836 rtnl_group_changelink net/core/rtnetlink.c:3380 [inline] __rtnl_newlink net/core/rtnetlink.c:3636 [inline] rtnl_newlink+0x10b9/0x2010 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x825/0xf40 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2546 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0x58f/0x890 net/socket.c:2503 leaked reference. __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline] netdev_hold include/linux/netdevice.h:4099 [inline] fib_check_nh_nongw net/ipv4/fib_semantics.c:1238 [inline] fib_check_nh+0xcc0/0x1b20 net/ipv4/fib_semantics.c:1258 fib_create_info+0x148f/0x2510 net/ipv4/fib_semantics.c:1553 fib_table_insert+0x1f6/0x1f20 net/ipv4/fib_trie.c:1236 fib_magic net/ipv4/fib_frontend.c:1104 [inline] fib_add_ifaddr+0xf50/0x1730 net/ipv4/fib_frontend.c:1148 fib_netdev_event+0x649/0x760 net/ipv4/fib_frontend.c:1486 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 __dev_notify_flags+0x359/0x650 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8643 do_setlink+0xe93/0x2ae0 net/core/rtnetlink.c:2836 rtnl_group_changelink net/core/rtnetlink.c:3380 [inline] __rtnl_newlink net/core/rtnetlink.c:3636 [inline] rtnl_newlink+0x10b9/0x2010 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x825/0xf40 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2546 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0x58f/0x890 net/socket.c:2503 ___sys_sendmsg net/socket.c:2557 [inline] __sys_sendmsg+0x2ad/0x390 net/socket.c:2586 leaked reference. __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline] netdev_hold include/linux/netdevice.h:4099 [inline] fib_check_nh_nongw net/ipv4/fib_semantics.c:1238 [inline] fib_check_nh+0xcc0/0x1b20 net/ipv4/fib_semantics.c:1258 fib_create_info+0x148f/0x2510 net/ipv4/fib_semantics.c:1553 fib_table_insert+0x1f6/0x1f20 net/ipv4/fib_trie.c:1236 fib_magic net/ipv4/fib_frontend.c:1104 [inline] fib_add_ifaddr+0xc28/0x1730 net/ipv4/fib_frontend.c:1141 fib_netdev_event+0x649/0x760 net/ipv4/fib_frontend.c:1486 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 __dev_notify_flags+0x359/0x650 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8643 do_setlink+0xe93/0x2ae0 net/core/rtnetlink.c:2836 rtnl_group_changelink net/core/rtnetlink.c:3380 [inline] __rtnl_newlink net/core/rtnetlink.c:3636 [inline] rtnl_newlink+0x10b9/0x2010 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x825/0xf40 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2546 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0x58f/0x890 net/socket.c:2503 ___sys_sendmsg net/socket.c:2557 [inline] __sys_sendmsg+0x2ad/0x390 net/socket.c:2586 leaked reference. __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline] netdev_tracker_alloc include/linux/netdevice.h:4082 [inline] fib6_nh_init+0x816/0x21e0 net/ipv6/route.c:3613 ip6_route_info_create+0x9c4/0x12c0 net/ipv6/route.c:3791 ip6_route_add+0x26/0x120 net/ipv6/route.c:3835 addrconf_prefix_route net/ipv6/addrconf.c:2425 [inline] addrconf_add_linklocal+0x629/0xae0 net/ipv6/addrconf.c:3217 addrconf_addr_gen+0x7fa/0xb60 addrconf_dev_config net/ipv6/addrconf.c:3391 [inline] addrconf_init_auto_addrs+0x96a/0xe90 net/ipv6/addrconf.c:3469 addrconf_notify+0xb59/0xfe0 net/ipv6/addrconf.c:3642 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 __dev_notify_flags+0x359/0x650 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8643 do_setlink+0xe93/0x2ae0 net/core/rtnetlink.c:2836 rtnl_group_changelink net/core/rtnetlink.c:3380 [inline] __rtnl_newlink net/core/rtnetlink.c:3636 [inline] rtnl_newlink+0x10b9/0x2010 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x825/0xf40 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2546 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1913 leaked reference. __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline] netdev_tracker_alloc include/linux/netdevice.h:4082 [inline] fib6_nh_init+0x816/0x21e0 net/ipv6/route.c:3613 ip6_route_info_create+0x9c4/0x12c0 net/ipv6/route.c:3791 ip6_route_add+0x26/0x120 net/ipv6/route.c:3835 addrconf_add_mroute net/ipv6/addrconf.c:2489 [inline] addrconf_add_dev+0x354/0x500 net/ipv6/addrconf.c:2507 addrconf_dev_config net/ipv6/addrconf.c:3382 [inline] addrconf_init_auto_addrs+0x85f/0xe90 net/ipv6/addrconf.c:3469 addrconf_notify+0xb59/0xfe0 net/ipv6/addrconf.c:3642 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 __dev_notify_flags+0x359/0x650 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8643 do_setlink+0xe93/0x2ae0 net/core/rtnetlink.c:2836 rtnl_group_changelink net/core/rtnetlink.c:3380 [inline] __rtnl_newlink net/core/rtnetlink.c:3636 [inline] rtnl_newlink+0x10b9/0x2010 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x825/0xf40 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2546 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0x58f/0x890 net/socket.c:2503 leaked reference. __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline] netdev_hold include/linux/netdevice.h:4099 [inline] fib_check_nh_nongw net/ipv4/fib_semantics.c:1238 [inline] fib_check_nh+0xcc0/0x1b20 net/ipv4/fib_semantics.c:1258 fib_create_info+0x148f/0x2510 net/ipv4/fib_semantics.c:1553 fib_table_insert+0x1f6/0x1f20 net/ipv4/fib_trie.c:1236 fib_magic net/ipv4/fib_frontend.c:1104 [inline] fib_add_ifaddr+0xf50/0x1730 net/ipv4/fib_frontend.c:1148 fib_netdev_event+0x649/0x760 net/ipv4/fib_frontend.c:1486 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 __dev_notify_flags+0x359/0x650 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8643 do_setlink+0xe93/0x2ae0 net/core/rtnetlink.c:2836 rtnl_group_changelink net/core/rtnetlink.c:3380 [inline] __rtnl_newlink net/core/rtnetlink.c:3636 [inline] rtnl_newlink+0x10b9/0x2010 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x825/0xf40 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2546 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0x58f/0x890 net/socket.c:2503 ___sys_sendmsg net/socket.c:2557 [inline] __sys_sendmsg+0x2ad/0x390 net/socket.c:2586 leaked reference. __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline] netdev_hold include/linux/netdevice.h:4099 [inline] fib_check_nh_nongw net/ipv4/fib_semantics.c:1238 [inline] fib_check_nh+0xcc0/0x1b20 net/ipv4/fib_semantics.c:1258 fib_create_info+0x148f/0x2510 net/ipv4/fib_semantics.c:1553 fib_table_insert+0x1f6/0x1f20 net/ipv4/fib_trie.c:1236 fib_magic net/ipv4/fib_frontend.c:1104 [inline] fib_add_ifaddr+0xc28/0x1730 net/ipv4/fib_frontend.c:1141 fib_netdev_event+0x649/0x760 net/ipv4/fib_frontend.c:1486 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 __dev_notify_flags+0x359/0x650 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8643 do_setlink+0xe93/0x2ae0 net/core/rtnetlink.c:2836 rtnl_group_changelink net/core/rtnetlink.c:3380 [inline] __rtnl_newlink net/core/rtnetlink.c:3636 [inline] rtnl_newlink+0x10b9/0x2010 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x825/0xf40 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2546 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0x58f/0x890 net/socket.c:2503 ___sys_sendmsg net/socket.c:2557 [inline] __sys_sendmsg+0x2ad/0x390 net/socket.c:2586 leaked reference. __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline] netdev_tracker_alloc include/linux/netdevice.h:4082 [inline] fib6_nh_init+0x816/0x21e0 net/ipv6/route.c:3613 ip6_route_info_create+0x9c4/0x12c0 net/ipv6/route.c:3791 ip6_route_add+0x26/0x120 net/ipv6/route.c:3835 addrconf_prefix_route net/ipv6/addrconf.c:2425 [inline] addrconf_add_linklocal+0x629/0xae0 net/ipv6/addrconf.c:3217 addrconf_addr_gen+0x7fa/0xb60 addrconf_dev_config net/ipv6/addrconf.c:3391 [inline] addrconf_init_auto_addrs+0x96a/0xe90 net/ipv6/addrconf.c:3469 addrconf_notify+0xb59/0xfe0 net/ipv6/addrconf.c:3642 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 __dev_notify_flags+0x359/0x650 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8643 do_setlink+0xe93/0x2ae0 net/core/rtnetlink.c:2836 rtnl_group_changelink net/core/rtnetlink.c:3380 [inline] __rtnl_newlink net/core/rtnetlink.c:3636 [inline] rtnl_newlink+0x10b9/0x2010 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x825/0xf40 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2546 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1913 leaked reference. __netdev_tracker_alloc include/linux/netdevice.h:4070 [inline] netdev_tracker_alloc include/linux/netdevice.h:4082 [inline] fib6_nh_init+0x816/0x21e0 net/ipv6/route.c:3613 ip6_route_info_create+0x9c4/0x12c0 net/ipv6/route.c:3791 ip6_route_add+0x26/0x120 net/ipv6/route.c:3835 addrconf_add_mroute net/ipv6/addrconf.c:2489 [inline] addrconf_add_dev+0x354/0x500 net/ipv6/addrconf.c:2507 addrconf_dev_config net/ipv6/addrconf.c:3382 [inline] addrconf_init_auto_addrs+0x85f/0xe90 net/ipv6/addrconf.c:3469 addrconf_notify+0xb59/0xfe0 net/ipv6/addrconf.c:3642 notifier_call_chain+0x18c/0x3a0 kernel/notifier.c:93 __dev_notify_flags+0x359/0x650 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8643 do_setlink+0xe93/0x2ae0 net/core/rtnetlink.c:2836 rtnl_group_changelink net/core/rtnetlink.c:3380 [inline] __rtnl_newlink net/core/rtnetlink.c:3636 [inline] rtnl_newlink+0x10b9/0x2010 net/core/rtnetlink.c:3673 rtnetlink_rcv_msg+0x825/0xf40 net/core/rtnetlink.c:6395 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2546 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1913 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] ____sys_sendmsg+0x58f/0x890 net/socket.c:2503