Corpus for ioctl$TCFLSH:

Coverage	Program
2365	perf_event_open-openat$ptmx-openat$ptmx-dup3-ioctl$TCFLSH
695	perf_event_open-openat$ptmx-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-syz_open_pts-ioctl$TCFLSH
227	perf_event_open-syz_open_dev$tty1-fcntl$dupfd-ioctl$TCFLSH
194	syz_open_dev$tty20-ioctl$TCFLSH
171	openat$ptmx-write$binfmt_elf64-ioctl$TCFLSH
166	openat$ptmx-openat$ptmx-dup3-ioctl$TCFLSH
132	openat$ptmx-openat$ptmx-dup3-ioctl$TCFLSH
131	openat$ptmx-ioctl$TCFLSH
131	openat$ptmx-openat$ptmx-dup3-ioctl$TCFLSH
119	openat$ptmx-openat$ptmx-dup3-ioctl$TCFLSH