unregister_netdevice: waiting for syz_tun to become free. Usage count = 13
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 dst_init+0xc8/0x3c0 net/core/dst.c:52
 dst_alloc+0x120/0x170 net/core/dst.c:92
 ip6_dst_alloc net/ipv6/route.c:345 [inline]
 ip6_rt_pcpu_alloc net/ipv6/route.c:1412 [inline]
 rt6_make_pcpu_route net/ipv6/route.c:1461 [inline]
 ip6_pol_route+0x80c/0x103c net/ipv6/route.c:2295
 ip6_pol_route_input+0x74/0x94 net/ipv6/route.c:2316
 pol_lookup_func include/net/ip6_fib.h:579 [inline]
 fib6_rule_lookup+0x190/0x4b4 net/ipv6/fib6_rules.c:116
 ip6_route_input_lookup net/ipv6/route.c:2328 [inline]
 ip6_route_input+0x610/0x8cc net/ipv6/route.c:2624
 ip6_rcv_finish_core+0x218/0x3c8 net/ipv6/ip6_input.c:66
 ip6_rcv_finish+0x124/0x220 net/ipv6/ip6_input.c:77
 NF_HOOK+0x2dc/0x36c include/linux/netfilter.h:302
 ipv6_rcv+0x9c/0xbc net/ipv6/ip6_input.c:310
 __netif_receive_skb_one_core net/core/dev.c:5581 [inline]
 __netif_receive_skb+0xcc/0x2a8 net/core/dev.c:5695
 netif_receive_skb_internal net/core/dev.c:5781 [inline]
 netif_receive_skb+0x1e8/0x924 net/core/dev.c:5840
 tun_rx_batched+0x48c/0x5dc drivers/net/tun.c:-1
 tun_get_user+0x1fe8/0x3298 drivers/net/tun.c:1998
 tun_chr_write_iter+0xfc/0x200 drivers/net/tun.c:2044
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3ec/0x7f0 fs/read_write.c:584
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 dst_init+0xc8/0x3c0 net/core/dst.c:52
 dst_alloc+0x120/0x170 net/core/dst.c:92
 ip6_dst_alloc net/ipv6/route.c:345 [inline]
 ip6_rt_pcpu_alloc net/ipv6/route.c:1412 [inline]
 rt6_make_pcpu_route net/ipv6/route.c:1461 [inline]
 ip6_pol_route+0x80c/0x103c net/ipv6/route.c:2295
 ip6_pol_route_input+0x74/0x94 net/ipv6/route.c:2316
 pol_lookup_func include/net/ip6_fib.h:579 [inline]
 fib6_rule_lookup+0x190/0x4b4 net/ipv6/fib6_rules.c:116
 ip6_route_input_lookup net/ipv6/route.c:2328 [inline]
 ip6_route_input+0x610/0x8cc net/ipv6/route.c:2624
 ip6_rcv_finish_core+0x218/0x3c8 net/ipv6/ip6_input.c:66
 ip6_rcv_finish+0x124/0x220 net/ipv6/ip6_input.c:77
 NF_HOOK+0x2dc/0x36c include/linux/netfilter.h:302
 ipv6_rcv+0x9c/0xbc net/ipv6/ip6_input.c:310
 __netif_receive_skb_one_core net/core/dev.c:5581 [inline]
 __netif_receive_skb+0xcc/0x2a8 net/core/dev.c:5695
 netif_receive_skb_internal net/core/dev.c:5781 [inline]
 netif_receive_skb+0x1e8/0x924 net/core/dev.c:5840
 tun_rx_batched+0x48c/0x5dc drivers/net/tun.c:-1
 tun_get_user+0x1fe8/0x3298 drivers/net/tun.c:1998
 tun_chr_write_iter+0xfc/0x200 drivers/net/tun.c:2044
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3ec/0x7f0 fs/read_write.c:584
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 dst_init+0xc8/0x3c0 net/core/dst.c:52
 dst_alloc+0x120/0x170 net/core/dst.c:92
 rt_dst_alloc net/ipv4/route.c:1662 [inline]
 __mkroute_output net/ipv4/route.c:2628 [inline]
 ip_route_output_key_hash_rcu+0xff4/0x1e38 net/ipv4/route.c:2850
 ip_route_output_key_hash+0x1b0/0x300 net/ipv4/route.c:2679
 __ip_route_output_key include/net/route.h:137 [inline]
 ip_route_output_flow+0x3c/0x160 net/ipv4/route.c:2909
 ip_route_output_key include/net/route.h:153 [inline]
 geneve_link_config+0x16c/0x544 drivers/net/geneve.c:1651
 geneve_newlink+0x130/0x198 drivers/net/geneve.c:1704
 rtnl_newlink_create net/core/rtnetlink.c:3422 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3642 [inline]
 rtnl_newlink+0x1058/0x1a50 net/core/rtnetlink.c:3655
 rtnetlink_rcv_msg+0x698/0xcdc net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x218/0x3e8 net/netlink/af_netlink.c:2511
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x60c/0x814 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6f4/0x9c0 net/netlink/af_netlink.c:1872
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 __sys_sendto+0x324/0x440 net/socket.c:2152
 __do_sys_sendto net/socket.c:2164 [inline]
 __se_sys_sendto net/socket.c:2160 [inline]
 __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2160
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_tracker_alloc include/linux/netdevice.h:4063 [inline]
 fib6_nh_init+0x630/0x1ad4 net/ipv6/route.c:3665
 ip6_route_info_create+0x7b0/0xf78 net/ipv6/route.c:3846
 ip6_route_add+0x34/0x154 net/ipv6/route.c:3890
 addrconf_prefix_route net/ipv6/addrconf.c:2442 [inline]
 addrconf_add_linklocal+0x3ac/0x608 net/ipv6/addrconf.c:3259
 addrconf_addr_gen+0x3ec/0x4fc net/ipv6/addrconf.c:3388
 addrconf_init_auto_addrs+0x5e0/0x94c net/ipv6/addrconf.c:-1
 addrconf_notify+0x8c4/0xc8c net/ipv6/addrconf.c:3685
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:2001 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 __dev_notify_flags+0x250/0x480 net/core/dev.c:8676
 dev_change_flags+0xc8/0x154 net/core/dev.c:8714
 do_setlink+0xa5c/0x3434 net/core/rtnetlink.c:2833
 __rtnl_newlink net/core/rtnetlink.c:3608 [inline]
 rtnl_newlink+0x13cc/0x1a50 net/core/rtnetlink.c:3655
 rtnetlink_rcv_msg+0x698/0xcdc net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x218/0x3e8 net/netlink/af_netlink.c:2511
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x60c/0x814 net/netlink/af_netlink.c:1344
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_tracker_alloc include/linux/netdevice.h:4063 [inline]
 fib6_nh_init+0x630/0x1ad4 net/ipv6/route.c:3665
 ip6_route_info_create+0x7b0/0xf78 net/ipv6/route.c:3846
 addrconf_f6i_alloc+0x1a8/0x36c net/ipv6/route.c:4621
 ipv6_add_addr+0x3c8/0xce0 net/ipv6/addrconf.c:1121
 addrconf_add_linklocal+0x23c/0x608 net/ipv6/addrconf.c:3257
 addrconf_addr_gen+0x3ec/0x4fc net/ipv6/addrconf.c:3388
 addrconf_init_auto_addrs+0x5e0/0x94c net/ipv6/addrconf.c:-1
 addrconf_notify+0x8c4/0xc8c net/ipv6/addrconf.c:3685
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:2001 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 __dev_notify_flags+0x250/0x480 net/core/dev.c:8676
 dev_change_flags+0xc8/0x154 net/core/dev.c:8714
 do_setlink+0xa5c/0x3434 net/core/rtnetlink.c:2833
 __rtnl_newlink net/core/rtnetlink.c:3608 [inline]
 rtnl_newlink+0x13cc/0x1a50 net/core/rtnetlink.c:3655
 rtnetlink_rcv_msg+0x698/0xcdc net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x218/0x3e8 net/netlink/af_netlink.c:2511
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_tracker_alloc include/linux/netdevice.h:4063 [inline]
 fib6_nh_init+0x630/0x1ad4 net/ipv6/route.c:3665
 ip6_route_info_create+0x7b0/0xf78 net/ipv6/route.c:3846
 ip6_route_add+0x34/0x154 net/ipv6/route.c:3890
 addrconf_add_mroute net/ipv6/addrconf.c:2506 [inline]
 addrconf_add_dev+0x228/0x324 net/ipv6/addrconf.c:2524
 addrconf_dev_config net/ipv6/addrconf.c:3424 [inline]
 addrconf_init_auto_addrs+0x510/0x94c net/ipv6/addrconf.c:3512
 addrconf_notify+0x8c4/0xc8c net/ipv6/addrconf.c:3685
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:2001 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 __dev_notify_flags+0x250/0x480 net/core/dev.c:8676
 dev_change_flags+0xc8/0x154 net/core/dev.c:8714
 do_setlink+0xa5c/0x3434 net/core/rtnetlink.c:2833
 __rtnl_newlink net/core/rtnetlink.c:3608 [inline]
 rtnl_newlink+0x13cc/0x1a50 net/core/rtnetlink.c:3655
 rtnetlink_rcv_msg+0x698/0xcdc net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x218/0x3e8 net/netlink/af_netlink.c:2511
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x60c/0x814 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6f4/0x9c0 net/netlink/af_netlink.c:1872
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_tracker_alloc include/linux/netdevice.h:4063 [inline]
 fib6_nh_init+0x630/0x1ad4 net/ipv6/route.c:3665
 ip6_route_info_create+0x7b0/0xf78 net/ipv6/route.c:3846
 ip6_route_add+0x34/0x154 net/ipv6/route.c:3890
 addrconf_prefix_route net/ipv6/addrconf.c:2442 [inline]
 fixup_permanent_addr net/ipv6/addrconf.c:3543 [inline]
 addrconf_permanent_addr+0x5d8/0x8d4 net/ipv6/addrconf.c:3567
 addrconf_notify+0x7b0/0xc8c net/ipv6/addrconf.c:3639
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:2001 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 __dev_notify_flags+0x250/0x480 net/core/dev.c:8676
 dev_change_flags+0xc8/0x154 net/core/dev.c:8714
 do_setlink+0xa5c/0x3434 net/core/rtnetlink.c:2833
 __rtnl_newlink net/core/rtnetlink.c:3608 [inline]
 rtnl_newlink+0x13cc/0x1a50 net/core/rtnetlink.c:3655
 rtnetlink_rcv_msg+0x698/0xcdc net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x218/0x3e8 net/netlink/af_netlink.c:2511
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x60c/0x814 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6f4/0x9c0 net/netlink/af_netlink.c:1872
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 __sys_sendto+0x324/0x440 net/socket.c:2152
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 fib_check_nh_nongw net/ipv4/fib_semantics.c:1239 [inline]
 fib_check_nh+0xa0c/0x15fc net/ipv4/fib_semantics.c:1259
 fib_create_info+0x1090/0x1e58 net/ipv4/fib_semantics.c:1558
 fib_table_insert+0xac/0x13a8 net/ipv4/fib_trie.c:1217
 fib_magic+0x26c/0x344 net/ipv4/fib_frontend.c:1118
 fib_add_ifaddr+0x33c/0x4f8 net/ipv4/fib_frontend.c:1162
 fib_netdev_event+0x360/0x4a0 net/ipv4/fib_frontend.c:1500
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:2001 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 __dev_notify_flags+0x250/0x480 net/core/dev.c:8676
 dev_change_flags+0xc8/0x154 net/core/dev.c:8714
 do_setlink+0xa5c/0x3434 net/core/rtnetlink.c:2833
 __rtnl_newlink net/core/rtnetlink.c:3608 [inline]
 rtnl_newlink+0x13cc/0x1a50 net/core/rtnetlink.c:3655
 rtnetlink_rcv_msg+0x698/0xcdc net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x218/0x3e8 net/netlink/af_netlink.c:2511
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x60c/0x814 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6f4/0x9c0 net/netlink/af_netlink.c:1872
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 fib_check_nh_nongw net/ipv4/fib_semantics.c:1239 [inline]
 fib_check_nh+0xa0c/0x15fc net/ipv4/fib_semantics.c:1259
 fib_create_info+0x1090/0x1e58 net/ipv4/fib_semantics.c:1558
 fib_table_insert+0xac/0x13a8 net/ipv4/fib_trie.c:1217
 fib_magic+0x26c/0x344 net/ipv4/fib_frontend.c:1118
 fib_add_ifaddr+0x2ec/0x4f8 net/ipv4/fib_frontend.c:1155
 fib_netdev_event+0x360/0x4a0 net/ipv4/fib_frontend.c:1500
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:2001 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 __dev_notify_flags+0x250/0x480 net/core/dev.c:8676
 dev_change_flags+0xc8/0x154 net/core/dev.c:8714
 do_setlink+0xa5c/0x3434 net/core/rtnetlink.c:2833
 __rtnl_newlink net/core/rtnetlink.c:3608 [inline]
 rtnl_newlink+0x13cc/0x1a50 net/core/rtnetlink.c:3655
 rtnetlink_rcv_msg+0x698/0xcdc net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x218/0x3e8 net/netlink/af_netlink.c:2511
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x60c/0x814 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6f4/0x9c0 net/netlink/af_netlink.c:1872
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_tracker_alloc include/linux/netdevice.h:4063 [inline]
 fib6_nh_init+0x630/0x1ad4 net/ipv6/route.c:3665
 ip6_route_info_create+0x7b0/0xf78 net/ipv6/route.c:3846
 addrconf_f6i_alloc+0x1a8/0x36c net/ipv6/route.c:4621
 ipv6_add_addr+0x3c8/0xce0 net/ipv6/addrconf.c:1121
 inet6_addr_add+0x388/0x820 net/ipv6/addrconf.c:3013
 inet6_rtm_newaddr+0x558/0x76c net/ipv6/addrconf.c:4973
 rtnetlink_rcv_msg+0x698/0xcdc net/core/rtnetlink.c:6150
 netlink_rcv_skb+0x218/0x3e8 net/netlink/af_netlink.c:2511
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6168
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x60c/0x814 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6f4/0x9c0 net/netlink/af_netlink.c:1872
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 __sys_sendto+0x324/0x440 net/socket.c:2152
 __do_sys_sendto net/socket.c:2164 [inline]
 __se_sys_sendto net/socket.c:2160 [inline]
 __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2160
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204