diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 283d149..23290e3 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -573,9 +573,12 @@
         reinterpret_cast<Rect&>(getLayer()->sourceCrop) = crop;
     }
     virtual void setVisibleRegionScreen(const Region& reg) {
-        getLayer()->visibleRegionScreen.rects =
-                reinterpret_cast<hwc_rect_t const *>(
-                        reg.getArray(&getLayer()->visibleRegionScreen.numRects));
+        // Region::getSharedBuffer creates a reference to the underlying
+        // SharedBuffer of this Region, this reference is freed
+        // in onDisplayed()
+        hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen;
+        SharedBuffer const* sb = reg.getSharedBuffer(&visibleRegion.numRects);
+        visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(sb->data());
     }
     virtual void setBuffer(const sp<GraphicBuffer>& buffer) {
         if (buffer == 0 || buffer->handle == 0) {
@@ -586,6 +589,16 @@
             getLayer()->handle = buffer->handle;
         }
     }
+    virtual void onDisplayed() {
+        hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen;
+        SharedBuffer const* sb = SharedBuffer::bufferFromData(visibleRegion.rects);
+        if (sb) {
+            sb->release();
+            // not technically needed but safer
+            visibleRegion.numRects = 0;
+            visibleRegion.rects = NULL;
+        }
+    }
 };
 
 /*
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index 8852ab6..a49a023 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -130,6 +130,7 @@
         virtual void setVisibleRegionScreen(const Region& reg) = 0;
         virtual void setBuffer(const sp<GraphicBuffer>& buffer) = 0;
         virtual void setAcquireFenceFd(int fenceFd) = 0;
+        virtual void onDisplayed() = 0;
     };
 
     /*
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index ea1bc54..f928805 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -72,6 +72,7 @@
 
 void Layer::onLayerDisplayed(const sp<const DisplayDevice>& hw,
         HWComposer::HWCLayerInterface* layer) {
+    LayerBaseClient::onLayerDisplayed(hw, layer);
     if (layer) {
         mSurfaceTexture->setReleaseFence(layer->getAndResetReleaseFenceFd());
     }
diff --git a/services/surfaceflinger/LayerBase.cpp b/services/surfaceflinger/LayerBase.cpp
index a2513a2..87dc572 100644
--- a/services/surfaceflinger/LayerBase.cpp
+++ b/services/surfaceflinger/LayerBase.cpp
@@ -288,12 +288,16 @@
     // scaling is already applied in transformedBounds
     layer.setFrame(transformedBounds);
     layer.setCrop(transformedBounds.getBounds());
-    layer.setVisibleRegionScreen(tr.transform(visibleRegion));
 }
 
 void LayerBase::setPerFrameData(const sp<const DisplayDevice>& hw,
         HWComposer::HWCLayerInterface& layer) {
     layer.setBuffer(0);
+    // we have to set the visible region on every frame because
+    // we currently free it during onLayerDisplayed(), which is called
+    // after HWComposer::commit() -- every frame.
+    const Transform& tr = hw->getTransform();
+    layer.setVisibleRegionScreen(tr.transform(visibleRegion));
 }
 
 void LayerBase::setAcquireFence(const sp<const DisplayDevice>& hw,
@@ -301,6 +305,13 @@
     layer.setAcquireFenceFd(-1);
 }
 
+void LayerBase::onLayerDisplayed(const sp<const DisplayDevice>& hw,
+        HWComposer::HWCLayerInterface* layer) {
+    if (layer) {
+        layer->onDisplayed();
+    }
+}
+
 void LayerBase::setFiltering(bool filtering)
 {
     mFiltering = filtering;
diff --git a/services/surfaceflinger/LayerBase.h b/services/surfaceflinger/LayerBase.h
index c18f397..4651517 100644
--- a/services/surfaceflinger/LayerBase.h
+++ b/services/surfaceflinger/LayerBase.h
@@ -218,7 +218,7 @@
     /** called after page-flip
      */
     virtual void onLayerDisplayed(const sp<const DisplayDevice>& hw,
-            HWComposer::HWCLayerInterface* layer) { }
+            HWComposer::HWCLayerInterface* layer);
 
     /** called before composition.
      * returns true if the layer has pending updates.