unregister_netdevice: waiting for batadv_slave_0 to become free. Usage count = 2
ref_tracker: netdev@0000000018ee424c has 1/1 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4375 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4387 [inline]
     netdev_get_by_index+0x5c/0xa4 net/core/dev.c:1008
     fib6_nh_init+0x4b0/0x15b8 net/ipv6/route.c:3590
     nh_create_ipv6 net/ipv4/nexthop.c:2875 [inline]
     nexthop_create net/ipv4/nexthop.c:2926 [inline]
     nexthop_add net/ipv4/nexthop.c:2963 [inline]
     rtm_new_nexthop+0x1770/0x5ba8 net/ipv4/nexthop.c:3277
     rtnetlink_rcv_msg+0x65c/0x8d4 net/core/rtnetlink.c:6951
     netlink_rcv_skb+0x198/0x334 net/netlink/af_netlink.c:2552
     rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6978
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x424/0x700 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x640/0xa50 net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:727 [inline]
     __sock_sendmsg+0xc8/0x168 net/socket.c:742
     ____sys_sendmsg+0x500/0x764 net/socket.c:2630
     ___sys_sendmsg+0x11c/0x19c net/socket.c:2684
     __sys_sendmsg+0x114/0x19c net/socket.c:2716
     __compat_sys_sendmsg net/compat.c:346 [inline]
     __do_compat_sys_sendmsg net/compat.c:353 [inline]
     __se_compat_sys_sendmsg net/compat.c:350 [inline]
     __arm64_compat_sys_sendmsg+0x74/0xa4 net/compat.c:350
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49
     el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132
     do_el0_svc_compat+0x40/0x68 arch/arm64/kernel/syscall.c:157

unregister_netdevice: waiting for batadv_slave_0 to become free. Usage count = 2
ref_tracker: netdev@0000000018ee424c has 1/1 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4375 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4387 [inline]
     netdev_get_by_index+0x5c/0xa4 net/core/dev.c:1008
     fib6_nh_init+0x4b0/0x15b8 net/ipv6/route.c:3590
     nh_create_ipv6 net/ipv4/nexthop.c:2875 [inline]
     nexthop_create net/ipv4/nexthop.c:2926 [inline]
     nexthop_add net/ipv4/nexthop.c:2963 [inline]
     rtm_new_nexthop+0x1770/0x5ba8 net/ipv4/nexthop.c:3277
     rtnetlink_rcv_msg+0x65c/0x8d4 net/core/rtnetlink.c:6951
     netlink_rcv_skb+0x198/0x334 net/netlink/af_netlink.c:2552
     rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6978
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x424/0x700 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x640/0xa50 net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:727 [inline]
     __sock_sendmsg+0xc8/0x168 net/socket.c:742
     ____sys_sendmsg+0x500/0x764 net/socket.c:2630
     ___sys_sendmsg+0x11c/0x19c net/socket.c:2684
     __sys_sendmsg+0x114/0x19c net/socket.c:2716
     __compat_sys_sendmsg net/compat.c:346 [inline]
     __do_compat_sys_sendmsg net/compat.c:353 [inline]
     __se_compat_sys_sendmsg net/compat.c:350 [inline]
     __arm64_compat_sys_sendmsg+0x74/0xa4 net/compat.c:350
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49
     el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132
     do_el0_svc_compat+0x40/0x68 arch/arm64/kernel/syscall.c:157

unregister_netdevice: waiting for batadv_slave_0 to become free. Usage count = 2
ref_tracker: netdev@0000000018ee424c has 1/1 users at
     __netdev_tracker_alloc include/linux/netdevice.h:4375 [inline]
     netdev_tracker_alloc include/linux/netdevice.h:4387 [inline]
     netdev_get_by_index+0x5c/0xa4 net/core/dev.c:1008
     fib6_nh_init+0x4b0/0x15b8 net/ipv6/route.c:3590
     nh_create_ipv6 net/ipv4/nexthop.c:2875 [inline]
     nexthop_create net/ipv4/nexthop.c:2926 [inline]
     nexthop_add net/ipv4/nexthop.c:2963 [inline]
     rtm_new_nexthop+0x1770/0x5ba8 net/ipv4/nexthop.c:3277
     rtnetlink_rcv_msg+0x65c/0x8d4 net/core/rtnetlink.c:6951
     netlink_rcv_skb+0x198/0x334 net/netlink/af_netlink.c:2552
     rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6978
     netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
     netlink_unicast+0x424/0x700 net/netlink/af_netlink.c:1346
     netlink_sendmsg+0x640/0xa50 net/netlink/af_netlink.c:1896
     sock_sendmsg_nosec net/socket.c:727 [inline]
     __sock_sendmsg+0xc8/0x168 net/socket.c:742
     ____sys_sendmsg+0x500/0x764 net/socket.c:2630
     ___sys_sendmsg+0x11c/0x19c net/socket.c:2684
     __sys_sendmsg+0x114/0x19c net/socket.c:2716
     __compat_sys_sendmsg net/compat.c:346 [inline]
     __do_compat_sys_sendmsg net/compat.c:353 [inline]
     __se_compat_sys_sendmsg net/compat.c:350 [inline]
     __arm64_compat_sys_sendmsg+0x74/0xa4 net/compat.c:350
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x6c/0x258 arch/arm64/kernel/syscall.c:49
     el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:132
     do_el0_svc_compat+0x40/0x68 arch/arm64/kernel/syscall.c:157