diff --git a/media/libstagefright/codecs/amrnb/dec/AMRNBDecoder.cpp b/media/libstagefright/codecs/amrnb/dec/AMRNBDecoder.cpp
index fb300da2304bd..a11d46bbd1e79 100644
--- a/media/libstagefright/codecs/amrnb/dec/AMRNBDecoder.cpp
+++ b/media/libstagefright/codecs/amrnb/dec/AMRNBDecoder.cpp
@@ -14,6 +14,10 @@
  * limitations under the License.
  */
 
+//#define LOG_NDEBUG 0
+#define LOG_TAG "AMRNBDecoder"
+#include <utils/Log.h>
+
 #include "AMRNBDecoder.h"
 
 #include "gsmamr_dec.h"
@@ -154,18 +158,24 @@ status_t AMRNBDecoder::read(
     const uint8_t *inputPtr =
         (const uint8_t *)mInputBuffer->data() + mInputBuffer->range_offset();
 
-    size_t numBytesRead =
+    int32_t numBytesRead =
         AMRDecode(mState,
           (Frame_Type_3GPP)((inputPtr[0] >> 3) & 0x0f),
           (UWord8 *)&inputPtr[1],
           static_cast<int16_t *>(buffer->data()),
           MIME_IETF);
 
+    if (numBytesRead == -1 ) {
+        LOGE("PV AMR decoder AMRDecode() call failed");
+        buffer->release();
+        buffer = NULL;
+        return ERROR_MALFORMED;
+    }
     ++numBytesRead;  // Include the frame type header byte.
 
     buffer->set_range(0, kNumSamplesPerFrame * sizeof(int16_t));
 
-    if (numBytesRead > mInputBuffer->range_length()) {
+    if (static_cast<size_t>(numBytesRead) > mInputBuffer->range_length()) {
         // This is bad, should never have happened, but did. Abort now.
 
         buffer->release();