diff --git a/mm/memblock.c b/mm/memblock.c
index d5d63ac..9ad3969 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -105,13 +105,18 @@
 	phys_addr_t base, res_base;
 	long j;
 
+	/* In case, huge size is requested */
+	if (end < size)
+		return MEMBLOCK_ERROR;
+
+	base = memblock_align_down((end - size), align);
+
 	/* Prevent allocations returning 0 as it's also used to
 	 * indicate an allocation failure
 	 */
 	if (start == 0)
 		start = PAGE_SIZE;
 
-	base = memblock_align_down((end - size), align);
 	while (start <= base) {
 		j = memblock_overlaps_region(&memblock.reserved, base, size);
 		if (j < 0)