Corpus for openat$loop_ctrl:

Coverage	Program
656	perf_event_open-perf_event_open-ioctl$PERF_EVENT_IOC_PERIOD-fremovexattr-ioctl$PERF_EVENT_IOC_REFRESH-openat$loop_ctrl-ioctl$LOOP_CTL_GET_FREE-ioctl$LOOP_CTL_REMOVE-ioctl$LOOP_CTL_ADD-ioctl$LOOP_CTL_ADD-syz_open_procfs
651	perf_event_open-ioctl$LOOP_CTL_REMOVE-openat$loop_ctrl-ioctl$LOOP_CTL_GET_FREE-ioctl$LOOP_CTL_REMOVE-ioctl$LOOP_CTL_ADD-dup3-syz_open_procfs-preadv-ioctl$PERF_EVENT_IOC_SET_OUTPUT-creat-syz_open_procfs-ioctl$LOOP_CTL_ADD-dup3