Corpus for openat$cgroup_subtree:

Coverage	Program
2335	openat-perf_event_open-openat-openat$snapshot-copy_file_range-openat$cgroup_subtree-socket$inet_udp-connect$inet-openat$procfs-sendfile-ioctl$BTRFS_IOC_GET_SUBVOL_INFO-pidfd_getfd-ioctl$FIBMAP-ioctl$BTRFS_IOC_INO_LOOKUP_USER-fallocate-syz_open_dev$sg-write$binfmt_aout-ioctl$F2FS_IOC_SET_PIN_FILE