Merge "libgui: check for invalid slot in attachBuffer" into lmp-dev

am: af33c978c8

Change-Id: I97f957bc5375d11cd034d4b06baa8636e7999f8c

1 files changed, 9 insertions, 0 deletions

diff --git a/libs/gui/IGraphicBufferProducer.cpp b/libs/gui/IGraphicBufferProducer.cpp
index b5ec604a96..b12d6ca3e0 100644
--- a/libs/gui/IGraphicBufferProducer.cpp
+++ b/libs/gui/IGraphicBufferProducer.cpp
@@ -26,6 +26,7 @@
 #include <binder/Parcel.h>
 #include <binder/IInterface.h>
 
+#include <gui/BufferQueueDefs.h>
 #include <gui/IGraphicBufferProducer.h>
 #include <gui/IProducerListener.h>
 
@@ -164,8 +165,16 @@ public:
         if (result != NO_ERROR) {
             return result;
         }
+
         *slot = reply.readInt32();
         result = reply.readInt32();
+        if (result == NO_ERROR &&
+                (*slot < 0 || *slot >= BufferQueueDefs::NUM_BUFFER_SLOTS)) {
+            ALOGE("attachBuffer returned invalid slot %d", *slot);
+            android_errorWriteLog(0x534e4554, "37478824");
+            return UNKNOWN_ERROR;
+        }
+
         return result;
     }