netlink: 'syz-executor6': attribute type 15 has an invalid length.
netlink: 'syz-executor6': attribute type 18 has an invalid length.
netlink: 'syz-executor6': attribute type 16 has an invalid length.
IPVS: stopping master sync thread 11760 ...
netlink: 'syz-executor5': attribute type 1 has an invalid length.
unregister_netdevice: waiting for syz_tun to become free. Usage count = 3