Warnings before patch:
files: ['tools/testing/selftests/net/packetdrill/tcp_syscall_bad_arg_sendmsg-empty-iov.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_basic.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_batch.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_client.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_closed.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_epoll_edge.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_epoll_exclusive.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_epoll_oneshot.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_fastopen-client.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_fastopen-server.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_maxfrags.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_small.pkt']

Current warnings:
files: ['tools/testing/selftests/net/packetdrill/tcp_syscall_bad_arg_sendmsg-empty-iov.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_basic.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_batch.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_client.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_closed.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_epoll_edge.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_epoll_exclusive.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_epoll_oneshot.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_fastopen-client.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_fastopen-server.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_maxfrags.pkt', 'tools/testing/selftests/net/packetdrill/tcp_zerocopy_small.pkt']

Warnings before: 0 after: 0