How to Convert from Byte Array to IplImage using JavaCV?

protected void processImage(byte[] data, int width, int height) {
 	 int w = width, h = height;
         if (grayImage == null || grayImage.width() != w || grayImage.height() != h) {
        	 grayImage = IplImage.createHeader(new CvSize(width, height), IPL_DEPTH_8U, 3);
         }
         BytePointer rawImageData = new BytePointer(data);
         cvSetData(grayImage, rawImageData, w*3);
  String filename; filename =Environment.getExternalStorageDirectory().toString()+"/RGB-"+Math.random()+".jpg"; cvSaveImage(filename,grayImage); // Save a image for check .

Fatal signal 11 (SIGSEGV) at 0x5e2a2000 (code=1), thread 28133 (acv.facepreview)