Program: 94763
Project: 94763
Buggy source:
@Override public int read(byte[] dest,int timeoutMillis) throws IOException {
  final UsbEndpoint endpoint=mDevice.getInterface(0).getEndpoint(0);
  if (ENABLE_ASYNC_READS) {
    final int readAmt;
synchronized (mReadBufferLock) {
      readAmt=Math.min(dest.length,mReadBuffer.length);
    }
    final UsbRequest request=new UsbRequest();
    request.initialize(mConnection,endpoint);
    final ByteBuffer buf=ByteBuffer.wrap(dest);
    if (!request.queue(buf,readAmt)) {
      throw new IOException("String_Node_Str");
    }
    final UsbRequest response=mConnection.requestWait();
    if (response == null) {
      throw new IOException("String_Node_Str");
    }
    final int payloadBytesRead=buf.position() - MODEM_STATUS_HEADER_LENGTH;
    if (payloadBytesRead > 0) {
      Log.d(TAG,HexDump.dumpHexString(dest,0,Math.min(32,dest.length)));
      return payloadBytesRead;
    }
 else {
      return 0;
    }
  }
 else {
    final int totalBytesRead;
synchronized (mReadBufferLock) {
      final int readAmt=Math.min(dest.length,mReadBuffer.length);
      totalBytesRead=mConnection.bulkTransfer(endpoint,mReadBuffer,readAmt,timeoutMillis);
      if (totalBytesRead < MODEM_STATUS_HEADER_LENGTH) {
        throw new IOException("String_Node_Str" + MODEM_STATUS_HEADER_LENGTH + "String_Node_Str");
      }
      return filterStatusBytes(mReadBuffer,dest,totalBytesRead,endpoint.getMaxPacketSize());
    }
  }
}

Fixed version (ground truth):
@Override public int read(byte[] dest,int timeoutMillis) throws IOException {
  final int interfaceCount=mDevice.getInterfaceCount();
  if (interfaceCount == 0)   throw new IOException("String_Node_Str");
  final UsbInterface usbInterface=mDevice.getInterface(0);
  final int endpointCount=usbInterface.getEndpointCount();
  if (endpointCount == 0)   throw new IOException("String_Node_Str");
  final UsbEndpoint endpoint=usbInterface.getEndpoint(0);
  if (ENABLE_ASYNC_READS) {
    final int readAmt;
synchronized (mReadBufferLock) {
      readAmt=Math.min(dest.length,mReadBuffer.length);
    }
    final UsbRequest request=new UsbRequest();
    request.initialize(mConnection,endpoint);
    final ByteBuffer buf=ByteBuffer.wrap(dest);
    if (!request.queue(buf,readAmt)) {
      throw new IOException("String_Node_Str");
    }
    final UsbRequest response=mConnection.requestWait();
    if (response == null) {
      throw new IOException("String_Node_Str");
    }
    final int payloadBytesRead=buf.position() - MODEM_STATUS_HEADER_LENGTH;
    if (payloadBytesRead > 0) {
      Log.d(TAG,HexDump.dumpHexString(dest,0,Math.min(32,dest.length)));
      return payloadBytesRead;
    }
 else {
      return 0;
    }
  }
 else {
    final int totalBytesRead;
synchronized (mReadBufferLock) {
      final int readAmt=Math.min(dest.length,mReadBuffer.length);
      totalBytesRead=mConnection.bulkTransfer(endpoint,mReadBuffer,readAmt,timeoutMillis);
      if (totalBytesRead < MODEM_STATUS_HEADER_LENGTH) {
        throw new IOException("String_Node_Str" + MODEM_STATUS_HEADER_LENGTH + "String_Node_Str");
      }
      return filterStatusBytes(mReadBuffer,dest,totalBytesRead,endpoint.getMaxPacketSize());
    }
  }
}