unregister_netdevice: waiting for lo to become free. Usage count = 8
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 dst_init+0xda/0x410 net/core/dst.c:52
 dst_alloc+0x12a/0x160 net/core/dst.c:92
 rt_dst_alloc net/ipv4/route.c:1657 [inline]
 ip_route_input_mc net/ipv4/route.c:1765 [inline]
 ip_route_input_rcu+0x12dc/0x30a0 net/ipv4/route.c:2505
 ip_route_input_noref+0x16b/0x250 net/ipv4/route.c:2522
 ip_rcv_finish_core+0x5a6/0x1bd0 net/ipv4/ip_input.c:365
 ip_rcv_finish+0x14a/0x250 net/ipv4/ip_input.c:447
 NF_HOOK+0x2ff/0x390 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5581 [inline]
 __netif_receive_skb+0xcc/0x290 net/core/dev.c:5695
 netif_receive_skb_internal net/core/dev.c:5781 [inline]
 netif_receive_skb+0x1d4/0x7e0 net/core/dev.c:5840
 tun_rx_batched+0x1b6/0x720 drivers/net/tun.c:1548
 tun_get_user+0x2769/0x3b90 drivers/net/tun.c:1998
 tun_chr_write_iter+0x112/0x1f0 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+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 dst_init+0xda/0x410 net/core/dst.c:52
 dst_alloc+0x12a/0x160 net/core/dst.c:92
 rt_dst_alloc net/ipv4/route.c:1657 [inline]
 ip_route_input_mc net/ipv4/route.c:1765 [inline]
 ip_route_input_rcu+0x12dc/0x30a0 net/ipv4/route.c:2505
 ip_route_input_noref+0x16b/0x250 net/ipv4/route.c:2522
 ip_rcv_finish_core+0x5a6/0x1bd0 net/ipv4/ip_input.c:365
 ip_rcv_finish+0x14a/0x250 net/ipv4/ip_input.c:447
 NF_HOOK+0x2ff/0x390 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5581 [inline]
 __netif_receive_skb+0xcc/0x290 net/core/dev.c:5695
 netif_receive_skb_internal net/core/dev.c:5781 [inline]
 netif_receive_skb+0x1d4/0x7e0 net/core/dev.c:5840
 tun_rx_batched+0x1b6/0x720 drivers/net/tun.c:1548
 tun_get_user+0x2769/0x3b90 drivers/net/tun.c:1998
 tun_chr_write_iter+0x112/0x1f0 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+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 dst_init+0xda/0x410 net/core/dst.c:52
 dst_alloc+0x12a/0x160 net/core/dst.c:92
 rt_dst_alloc net/ipv4/route.c:1657 [inline]
 ip_route_input_mc net/ipv4/route.c:1765 [inline]
 ip_route_input_rcu+0x12dc/0x30a0 net/ipv4/route.c:2505
 ip_route_input_noref+0x16b/0x250 net/ipv4/route.c:2522
 ip_rcv_finish_core+0x5a6/0x1bd0 net/ipv4/ip_input.c:365
 ip_rcv_finish+0x14a/0x250 net/ipv4/ip_input.c:447
 NF_HOOK+0x2ff/0x390 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5581 [inline]
 __netif_receive_skb+0xcc/0x290 net/core/dev.c:5695
 netif_receive_skb_internal net/core/dev.c:5781 [inline]
 netif_receive_skb+0x1d4/0x7e0 net/core/dev.c:5840
 tun_rx_batched+0x1b6/0x720 drivers/net/tun.c:1548
 tun_get_user+0x2769/0x3b90 drivers/net/tun.c:1998
 tun_chr_write_iter+0x112/0x1f0 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+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 dst_init+0xda/0x410 net/core/dst.c:52
 dst_alloc+0x12a/0x160 net/core/dst.c:92
 rt_dst_alloc net/ipv4/route.c:1657 [inline]
 ip_route_input_mc net/ipv4/route.c:1765 [inline]
 ip_route_input_rcu+0x12dc/0x30a0 net/ipv4/route.c:2505
 ip_route_input_noref+0x16b/0x250 net/ipv4/route.c:2522
 ip_rcv_finish_core+0x5a6/0x1bd0 net/ipv4/ip_input.c:365
 ip_rcv_finish+0x14a/0x250 net/ipv4/ip_input.c:447
 NF_HOOK+0x2ff/0x390 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5581 [inline]
 __netif_receive_skb+0xcc/0x290 net/core/dev.c:5695
 netif_receive_skb_internal net/core/dev.c:5781 [inline]
 netif_receive_skb+0x1d4/0x7e0 net/core/dev.c:5840
 tun_rx_batched+0x1b6/0x720 drivers/net/tun.c:1548
 tun_get_user+0x2769/0x3b90 drivers/net/tun.c:1998
 tun_chr_write_iter+0x112/0x1f0 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+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 dst_init+0xda/0x410 net/core/dst.c:52
 dst_alloc+0x12a/0x160 net/core/dst.c:92
 rt_dst_alloc net/ipv4/route.c:1657 [inline]
 ip_route_input_mc net/ipv4/route.c:1765 [inline]
 ip_route_input_rcu+0x12dc/0x30a0 net/ipv4/route.c:2505
 ip_route_input_noref+0x16b/0x250 net/ipv4/route.c:2522
 ip_rcv_finish_core+0x5a6/0x1bd0 net/ipv4/ip_input.c:365
 ip_rcv_finish+0x14a/0x250 net/ipv4/ip_input.c:447
 NF_HOOK+0x2ff/0x390 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5581 [inline]
 __netif_receive_skb+0xcc/0x290 net/core/dev.c:5695
 netif_receive_skb_internal net/core/dev.c:5781 [inline]
 netif_receive_skb+0x1d4/0x7e0 net/core/dev.c:5840
 tun_rx_batched+0x1b6/0x720 drivers/net/tun.c:1548
 tun_get_user+0x2769/0x3b90 drivers/net/tun.c:1998
 tun_chr_write_iter+0x112/0x1f0 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+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 dst_init+0xda/0x410 net/core/dst.c:52
 dst_alloc+0x12a/0x160 net/core/dst.c:92
 rt_dst_alloc net/ipv4/route.c:1657 [inline]
 ip_route_input_mc net/ipv4/route.c:1765 [inline]
 ip_route_input_rcu+0x12dc/0x30a0 net/ipv4/route.c:2505
 ip_route_input_noref+0x16b/0x250 net/ipv4/route.c:2522
 ip_rcv_finish_core+0x5a6/0x1bd0 net/ipv4/ip_input.c:365
 ip_rcv_finish+0x14a/0x250 net/ipv4/ip_input.c:447
 NF_HOOK+0x2ff/0x390 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5581 [inline]
 __netif_receive_skb+0xcc/0x290 net/core/dev.c:5695
 netif_receive_skb_internal net/core/dev.c:5781 [inline]
 netif_receive_skb+0x1d4/0x7e0 net/core/dev.c:5840
 tun_rx_batched+0x1b6/0x720 drivers/net/tun.c:1548
 tun_get_user+0x2769/0x3b90 drivers/net/tun.c:1998
 tun_chr_write_iter+0x112/0x1f0 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+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
leaked reference.
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 dst_init+0xda/0x410 net/core/dst.c:52
 dst_alloc+0x12a/0x160 net/core/dst.c:92
 rt_dst_alloc net/ipv4/route.c:1657 [inline]
 ip_route_input_mc net/ipv4/route.c:1765 [inline]
 ip_route_input_rcu+0x12dc/0x30a0 net/ipv4/route.c:2505
 ip_route_input_noref+0x16b/0x250 net/ipv4/route.c:2522
 ip_rcv_finish_core+0x5a6/0x1bd0 net/ipv4/ip_input.c:365
 ip_rcv_finish+0x14a/0x250 net/ipv4/ip_input.c:447
 NF_HOOK+0x2ff/0x390 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5581 [inline]
 __netif_receive_skb+0xcc/0x290 net/core/dev.c:5695
 netif_receive_skb_internal net/core/dev.c:5781 [inline]
 netif_receive_skb+0x1d4/0x7e0 net/core/dev.c:5840
 tun_rx_batched+0x1b6/0x720 drivers/net/tun.c:1548
 tun_get_user+0x2769/0x3b90 drivers/net/tun.c:1998
 tun_chr_write_iter+0x112/0x1f0 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+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2