net/core/net_namespace.c:699: warning: No description found for return value of 'get_net_ns' net/core/net_namespace.c:1367: warning: No description found for return value of 'register_pernet_subsys' net/core/net_namespace.c:1413: warning: No description found for return value of 'register_pernet_device' net/core/net_namespace.c:700: warning: No description found for return value of 'get_net_ns' net/core/net_namespace.c:1368: warning: No description found for return value of 'register_pernet_subsys' net/core/net_namespace.c:1414: warning: No description found for return value of 'register_pernet_device'