Corpus for pipe2:

Coverage	Program
778	memfd_create-mmap-pipe2
684	memfd_create-pwritev2-mmap-pipe2
680	pipe2
645	pipe2
637	pipe2-clone3
590	pipe2
587	pipe2
558	pipe2-pipe2
538	pipe2
537	pipe2-name_to_handle_at
516	socket$inet_icmp_raw-socket$inet_icmp_raw-socket$inet_icmp_raw-prlimit64-pipe2
353	perf_event_open$cgroup-pipe2
328	clock_gettime-pipe2
323	openat$cgroup_root-pipe2
300	stat-setresuid-pipe2