Corpus for write$9p:

Coverage	Program
1410	perf_event_open-pipe2$9p-pipe2$9p-write$9p-write$9p-fcntl$setpipe
1170	pipe2$9p-openat-mmap-write$9p-write$9p
487	perf_event_open-pipe2$9p-write$P9_RGETLOCK-write$9p
402	epoll_create-pipe2$9p-write$9p-fcntl$setpipe-epoll_ctl$EPOLL_CTL_ADD-write$9p
320	pipe2$9p-write$9p-write$9p
277	pipe2$9p-write$9p-write$9p