static int nfsd_get_default_max_blksize(void)
{
	struct sysinfo i;
	unsigned long long target;
	unsigned long ret;

	si_meminfo(&i);
	target = (i.totalram - i.totalhigh) << PAGE_SHIFT;
	/*
	 * Aim for 1/4096 of memory per thread This gives 1MB on 4Gig
	 * machines, but only uses 32K on 128M machines.  Bottom out at
	 * 8K on 32M and smaller.  Of course, this is only a default.
	 */
	target >>= 12;

	ret = NFSSVC_MAXBLKSIZE;
	while (ret > target && ret >= 8*1024*2)
		ret /= 2;
	return ret;
}

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.