From 7a13c8d5204c2669fbf7d653f502467be8cc43d9 Mon Sep 17 00:00:00 2001
From: Qining Lu <qining@google.com>
Date: Thu, 27 Jul 2017 14:39:35 -0400
Subject: [PATCH] Minor fix to avoid crash in getIndicesData

---
 gapis/api/vulkan/draw_call_mesh.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gapis/api/vulkan/draw_call_mesh.go b/gapis/api/vulkan/draw_call_mesh.go
index 83edb0f5c7..48fa9c76fc 100644
--- a/gapis/api/vulkan/draw_call_mesh.go
+++ b/gapis/api/vulkan/draw_call_mesh.go
@@ -166,6 +166,10 @@ func getIndicesData(ctx context.Context, s *api.State, boundIndexBuffer *BoundIn
 		start := offset + uint64(firstIndex)*sizeOfIndex
 		size := uint64(indexCount) * sizeOfIndex
 		end := start + size
+		if start >= backingMem.Data.count || end > backingMem.Data.count {
+			log.E(ctx, "Shadow memory of index buffer is not big enough")
+			return []uint32{}
+		}
 		indicesSlice := backingMem.Data.Slice(start, end, s.MemoryLayout)
 		for i := uint64(0); (i < size) && (i+sizeOfIndex-1 < size); i += sizeOfIndex {
 			index := int32(0)