diff --git a/kernel/resource.c b/kernel/resource.c
index 0004b8b36479..6681ee6008e5 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -502,7 +502,8 @@ static int __find_resource(struct resource *root, struct resource *old,
 			alloc.start = constraint->alignf(constraint->alignf_data, &avail,
 					size, constraint->align);
 			alloc.end = alloc.start + size - 1;
-			if (resource_contains(&avail, &alloc)) {
+			if (alloc.start <= alloc.end &&
+			    resource_contains(&avail, &alloc)) {
 				new->start = alloc.start;
 				new->end = alloc.end;
 				return 0;