diff --git a/libs/surfaceflinger/SurfaceFlinger.cpp b/libs/surfaceflinger/SurfaceFlinger.cpp
index b408779..4555b3c 100644
--- a/libs/surfaceflinger/SurfaceFlinger.cpp
+++ b/libs/surfaceflinger/SurfaceFlinger.cpp
@@ -1519,6 +1519,10 @@
             if (l != 0) {
                 SharedBufferStack::Statistics stats = l->lcblk->getStats();
                 result.append( l->lcblk->dump("      ") );
+                snprintf(buffer, SIZE,
+                        "      front-index=%u\n", l->getFrontBufferIndex());
+                result.append(buffer);
+
                 sp<const GraphicBuffer> buf0(l->getBuffer(0));
                 sp<const GraphicBuffer> buf1(l->getBuffer(1));
                 uint32_t w0=0, h0=0, s0=0;