unregister_netdevice: waiting for syz_tun to become free. Usage count = 3
ref_tracker: netdev@00000000c0e32cee has 1/2 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4528 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4540 [inline]
     netdev_get_by_index+0x50/0xa0 net/core/dev.c:1049
     fib6_nh_init+0x20c/0x87c net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x114/0x360 net/ipv6/route.c:3914
     addrconf_f6i_alloc+0x100/0x19c net/ipv6/route.c:4718
     ipv6_add_addr+0x130/0x668 net/ipv6/addrconf.c:1132
     inet6_addr_add+0x9c/0x2c8 net/ipv6/addrconf.c:3074
     inet6_rtm_newaddr+0x644/0x7a0 net/ipv6/addrconf.c:5095
     rtnetlink_rcv_msg+0x300/0x3a0 net/core/rtnetlink.c:7132
     netlink_rcv_skb+0x60/0x134 net/netlink/af_netlink.c:2556
     rtnetlink_rcv+0x18/0x30 net/core/rtnetlink.c:7159
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x328/0x3ac net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x194/0x410 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec net/socket.c:800 [inline]
     __sock_sendmsg+0x54/0x60 net/socket.c:815
     __sys_sendto+0x114/0x180 net/socket.c:2281
     __do_sys_sendto net/socket.c:2288 [inline]
     __se_sys_sendto net/socket.c:2284 [inline]
     __arm64_sys_sendto+0x24/0x40 net/socket.c:2284
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x54/0x10c arch/arm64/kernel/syscall.c:49

ref_tracker: netdev@00000000c0e32cee has 1/2 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4528 [inline]
     netdev_hold include/linux/netdevice.h:4557 [inline]
     ipv6_add_dev+0x148/0x5f8 net/ipv6/addrconf.c:411
     addrconf_notify+0x1cc/0x814 net/ipv6/addrconf.c:3686
     notifier_call_chain kernel/notifier.c:85 [inline]
     raw_notifier_call_chain+0x54/0x80 kernel/notifier.c:453
     call_netdevice_notifiers_info+0x58/0xa4 net/core/dev.c:2275
     call_netdevice_notifiers_extack net/core/dev.c:2313 [inline]
     call_netdevice_notifiers net/core/dev.c:2327 [inline]
     register_netdevice+0x658/0x880 net/core/dev.c:11541
     tun_set_iff drivers/net/tun.c:2956 [inline]
     __tun_chr_ioctl+0x9b0/0x16e0 drivers/net/tun.c:3239
     tun_chr_ioctl+0x14/0x5c drivers/net/tun.c:3488
     vfs_ioctl fs/ioctl.c:51 [inline]
     __do_sys_ioctl fs/ioctl.c:597 [inline]
     __se_sys_ioctl fs/ioctl.c:583 [inline]
     __arm64_sys_ioctl+0xa8/0x100 fs/ioctl.c:583
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x54/0x10c arch/arm64/kernel/syscall.c:49
     el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:121
     do_el0_svc+0x1c/0x34 arch/arm64/kernel/syscall.c:140
     el0_svc+0x38/0x1fc arch/arm64/kernel/entry-common.c:758
     el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:777
     el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:590

unregister_netdevice: waiting for syz_tun to become free. Usage count = 3
ref_tracker: netdev@00000000c0e32cee has 1/2 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4528 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4540 [inline]
     netdev_get_by_index+0x50/0xa0 net/core/dev.c:1049
     fib6_nh_init+0x20c/0x87c net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x114/0x360 net/ipv6/route.c:3914
     addrconf_f6i_alloc+0x100/0x19c net/ipv6/route.c:4718
     ipv6_add_addr+0x130/0x668 net/ipv6/addrconf.c:1132
     inet6_addr_add+0x9c/0x2c8 net/ipv6/addrconf.c:3074
     inet6_rtm_newaddr+0x644/0x7a0 net/ipv6/addrconf.c:5095
     rtnetlink_rcv_msg+0x300/0x3a0 net/core/rtnetlink.c:7132
     netlink_rcv_skb+0x60/0x134 net/netlink/af_netlink.c:2556
     rtnetlink_rcv+0x18/0x30 net/core/rtnetlink.c:7159
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x328/0x3ac net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x194/0x410 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec net/socket.c:800 [inline]
     __sock_sendmsg+0x54/0x60 net/socket.c:815
     __sys_sendto+0x114/0x180 net/socket.c:2281
     __do_sys_sendto net/socket.c:2288 [inline]
     __se_sys_sendto net/socket.c:2284 [inline]
     __arm64_sys_sendto+0x24/0x40 net/socket.c:2284
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x54/0x10c arch/arm64/kernel/syscall.c:49

ref_tracker: netdev@00000000c0e32cee has 1/2 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4528 [inline]
     netdev_hold include/linux/netdevice.h:4557 [inline]
     ipv6_add_dev+0x148/0x5f8 net/ipv6/addrconf.c:411
     addrconf_notify+0x1cc/0x814 net/ipv6/addrconf.c:3686
     notifier_call_chain kernel/notifier.c:85 [inline]
     raw_notifier_call_chain+0x54/0x80 kernel/notifier.c:453
     call_netdevice_notifiers_info+0x58/0xa4 net/core/dev.c:2275
     call_netdevice_notifiers_extack net/core/dev.c:2313 [inline]
     call_netdevice_notifiers net/core/dev.c:2327 [inline]
     register_netdevice+0x658/0x880 net/core/dev.c:11541
     tun_set_iff drivers/net/tun.c:2956 [inline]
     __tun_chr_ioctl+0x9b0/0x16e0 drivers/net/tun.c:3239
     tun_chr_ioctl+0x14/0x5c drivers/net/tun.c:3488
     vfs_ioctl fs/ioctl.c:51 [inline]
     __do_sys_ioctl fs/ioctl.c:597 [inline]
     __se_sys_ioctl fs/ioctl.c:583 [inline]
     __arm64_sys_ioctl+0xa8/0x100 fs/ioctl.c:583
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x54/0x10c arch/arm64/kernel/syscall.c:49
     el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:121
     do_el0_svc+0x1c/0x34 arch/arm64/kernel/syscall.c:140
     el0_svc+0x38/0x1fc arch/arm64/kernel/entry-common.c:758
     el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:777
     el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:590

unregister_netdevice: waiting for syz_tun to become free. Usage count = 3
ref_tracker: netdev@00000000c0e32cee has 1/2 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4528 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4540 [inline]
     netdev_get_by_index+0x50/0xa0 net/core/dev.c:1049
     fib6_nh_init+0x20c/0x87c net/ipv6/route.c:3615
     ip6_route_info_create_nh+0x114/0x360 net/ipv6/route.c:3914
     addrconf_f6i_alloc+0x100/0x19c net/ipv6/route.c:4718
     ipv6_add_addr+0x130/0x668 net/ipv6/addrconf.c:1132
     inet6_addr_add+0x9c/0x2c8 net/ipv6/addrconf.c:3074
     inet6_rtm_newaddr+0x644/0x7a0 net/ipv6/addrconf.c:5095
     rtnetlink_rcv_msg+0x300/0x3a0 net/core/rtnetlink.c:7132
     netlink_rcv_skb+0x60/0x134 net/netlink/af_netlink.c:2556
     rtnetlink_rcv+0x18/0x30 net/core/rtnetlink.c:7159
     netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
     netlink_unicast+0x328/0x3ac net/netlink/af_netlink.c:1345
     netlink_sendmsg+0x194/0x410 net/netlink/af_netlink.c:1900
     sock_sendmsg_nosec net/socket.c:800 [inline]
     __sock_sendmsg+0x54/0x60 net/socket.c:815
     __sys_sendto+0x114/0x180 net/socket.c:2281
     __do_sys_sendto net/socket.c:2288 [inline]
     __se_sys_sendto net/socket.c:2284 [inline]
     __arm64_sys_sendto+0x24/0x40 net/socket.c:2284
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x54/0x10c arch/arm64/kernel/syscall.c:49

ref_tracker: netdev@00000000c0e32cee has 1/2 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4528 [inline]
     netdev_hold include/linux/netdevice.h:4557 [inline]
     ipv6_add_dev+0x148/0x5f8 net/ipv6/addrconf.c:411
     addrconf_notify+0x1cc/0x814 net/ipv6/addrconf.c:3686
     notifier_call_chain kernel/notifier.c:85 [inline]
     raw_notifier_call_chain+0x54/0x80 kernel/notifier.c:453
     call_netdevice_notifiers_info+0x58/0xa4 net/core/dev.c:2275
     call_netdevice_notifiers_extack net/core/dev.c:2313 [inline]
     call_netdevice_notifiers net/core/dev.c:2327 [inline]
     register_netdevice+0x658/0x880 net/core/dev.c:11541
     tun_set_iff drivers/net/tun.c:2956 [inline]
     __tun_chr_ioctl+0x9b0/0x16e0 drivers/net/tun.c:3239
     tun_chr_ioctl+0x14/0x5c drivers/net/tun.c:3488
     vfs_ioctl fs/ioctl.c:51 [inline]
     __do_sys_ioctl fs/ioctl.c:597 [inline]
     __se_sys_ioctl fs/ioctl.c:583 [inline]
     __arm64_sys_ioctl+0xa8/0x100 fs/ioctl.c:583
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x54/0x10c arch/arm64/kernel/syscall.c:49
     el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:121
     do_el0_svc+0x1c/0x34 arch/arm64/kernel/syscall.c:140
     el0_svc+0x38/0x1fc arch/arm64/kernel/entry-common.c:758
     el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:777
     el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:590