../net/socket.c:1669:21: warning: symbol 'update_socket_protocol' was not declared. Should it be static? ../net/packet/af_packet.c:1099:13: warning: context imbalance in '__packet_lookup_frame_in_block' - different lock contexts for basic block ../net/packet/af_packet.c:2541:17: warning: context imbalance in 'tpacket_rcv' - unexpected unlock ../arch/x86/boot/version.c:18:12: warning: symbol 'kernel_version' was not declared. Should it be static?