Merge "libgui: Check slot received from IGBP in Surface" into lmp-dev am: 98e3c06010 am: 970bb51580 am: 78976cea8f

am: 2fe15aa6f0

Change-Id: I36fcc82af237645b61c69d70c574843a5b2753c8

1 files changed, 6 insertions, 0 deletions

diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index 4b76f9834c..22aa4ecc36 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -237,6 +237,12 @@ int Surface::dequeueBuffer(android_native_buffer_t** buffer, int* fenceFd) {
         return result;
     }
 
+    if (buf < 0 || buf >= NUM_BUFFER_SLOTS) {
+        ALOGE("dequeueBuffer: IGraphicBufferProducer returned invalid slot number %d", buf);
+        android_errorWriteLog(0x534e4554, "36991414"); // SafetyNet logging
+        return FAILED_TRANSACTION;
+    }
+
     Mutex::Autolock lock(mMutex);
 
     sp<GraphicBuffer>& gbuf(mSlots[buf].buffer);