static int isofs_statfs (struct dentry *dentry, struct kstatfs *buf)
{
	struct super_block *sb = dentry->d_sb;
	u64 id = huge_encode_dev(sb->s_bdev->bd_dev);

	buf->f_type = ISOFS_SUPER_MAGIC;
	buf->f_bsize = sb->s_blocksize;
	buf->f_blocks = (ISOFS_SB(sb)->s_nzones
		<< (ISOFS_SB(sb)->s_log_zone_size - sb->s_blocksize_bits));
	buf->f_bfree = 0;
	buf->f_bavail = 0;
	buf->f_files = ISOFS_SB(sb)->s_ninodes;
	buf->f_ffree = 0;
	buf->f_fsid.val[0] = (u32)id;
	buf->f_fsid.val[1] = (u32)(id >> 32);
	buf->f_namelen = NAME_MAX;
	return 0;
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.