net/core/net_namespace.c:742: warning: No description found for return value of 'get_net_ns' net/core/net_namespace.c:1397: warning: No description found for return value of 'register_pernet_subsys' net/core/net_namespace.c:1443: warning: No description found for return value of 'register_pernet_device' net/core/net_namespace.c:744: warning: No description found for return value of 'get_net_ns' net/core/net_namespace.c:1399: warning: No description found for return value of 'register_pernet_subsys' net/core/net_namespace.c:1445: warning: No description found for return value of 'register_pernet_device'