Corpus for openat$pidfd:

Coverage	Program
855	perf_event_open-syz_open_dev$tty1-add_key$keyring-ioctl$TIOCGPTPEER-ioctl$TCGETS2-add_key$keyring-add_key$keyring-openat$pidfd-preadv-ioctl$PIO_UNIMAP-add_key$user-keyctl$revoke-keyctl$KEYCTL_MOVE