diff --git a/mm/nommu.c b/mm/nommu.c
index 5d8ae08..1d32fe8 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -105,7 +105,11 @@
 {
 	struct page *page;
 
-	if (!objp || !((page = virt_to_page(objp))))
+	/*
+	 * If the object we have should not have ksize performed on it,
+	 * return size of 0
+	 */
+	if (!objp || (unsigned long)objp >= memory_end || !((page = virt_to_page(objp))))
 		return 0;
 
 	if (PageSlab(page))