Corpus for ioctl$TCFLSH:

Coverage	Program
200	perf_event_open-openat$ptmx-ioctl$TCFLSH
182	syz_open_dev$tty1-ioctl$TCFLSH
172	openat$ptmx-ioctl$TCFLSH
133	openat$ptmx-ioctl$TCFLSH