Corpus for pidfd_getfd:

Coverage	Program
423	perf_event_open-getpid-pidfd_open-getpid-pidfd_open-pidfd_getfd
213	prctl$PR_SET_SYSCALL_USER_DISPATCH_ON-getpid-pidfd_open-socket$unix-pidfd_getfd
181	perf_event_open-openat$sr-getpid-pidfd_open-dup-pidfd_getfd
137	seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-getpid-pidfd_open-pidfd_open-pidfd_getfd
121	getpid-pidfd_open-close_range-pidfd_getfd
70	getpid-pidfd_open-pidfd_getfd
35	openat$thread_pidfd-pidfd_getfd
21	pidfd_getfd
9	pidfd_getfd