Corpus for fchdir:
Coverage Program
188 openat$thread_pidfd-fchdir
85 socket$netlink-fchdir
68 seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-openat$pidfd-dup-fchdir
62 perf_event_open-fchdir
41 perf_event_open-close_range-fchdir