fix valgrind

Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
rx/tx in worker with blocking fd

Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
fix gen_bash_completion

Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>