@@ -, +, @@ 
 Bill
--- a/include/xen/blkif.h	
+++ a/include/xen/blkif.h	
@@ -72,25 +72,31 @@ enum blkif_protocol {
 
 static void inline blkif_get_x86_32_req(blkif_request_t *dst, blkif_x86_32_request_t *src)
 {
-	int i;
+	int i, n = BLKIF_MAX_SEGMENTS_PER_REQUEST;
+
 	dst->operation = src->operation;
 	dst->nr_segments = src->nr_segments;
 	dst->handle = src->handle;
 	dst->id = src->id;
 	dst->sector_number = src->sector_number;
-	for (i = 0; i < src->nr_segments; i++)
+	if (n > src->nr_segments)
+		n = src->nr_segments;
+	for (i = 0; i < n; i++)
 		dst->seg[i] = src->seg[i];
 }
 
 static void inline blkif_get_x86_64_req(blkif_request_t *dst, blkif_x86_64_request_t *src)
 {
-	int i;
+	int i, n = BLKIF_MAX_SEGMENTS_PER_REQUEST;
+
 	dst->operation = src->operation;
 	dst->nr_segments = src->nr_segments;
 	dst->handle = src->handle;
 	dst->id = src->id;
 	dst->sector_number = src->sector_number;
-	for (i = 0; i < src->nr_segments; i++)
+	if (n > src->nr_segments)
+		n = src->nr_segments;
+	for (i = 0; i < n; i++)
 		dst->seg[i] = src->seg[i];
 }