Index: kernel/generic/src/ddi/ddi.c
===================================================================
--- kernel/generic/src/ddi/ddi.c	(revision fe17135732cca349ba5fedbcb89621b826a2d672)
+++ kernel/generic/src/ddi/ddi.c	(revision 6c9d3bc164aeb14f17e0528300ab15307798f49f)
@@ -382,4 +382,7 @@
 	
 	size_t frames = SIZE2FRAMES(size);
+	if (frames == 0)
+		return EINVAL;
+
 	*phys = frame_alloc(frames, FRAME_ATOMIC, constraint);
 	if (*phys == 0)