Mali G57 image object created from buffer through svm failed

cl_image_format imageFormat;

imageFormat.image_channel_data_type = CL_UNSIGNED_INT16;

imageFormat.image_channel_order = CL_RGBA; // considering image with only single channel

// Allocate SVM memory

size_t imageSize = width * height * sizeof(cl_uchar);

cl_uchar *imgSvmPtr = (cl_uchar *) clSVMAlloc(context, CL_MEM_READ_WRITE, imageSize, 0);

// Create a buffer object using the SVM memory

cl_mem svmImgBuffer = clCreateBuffer(context, CL_MEM_USE_HOST_PTR, imageSize, imgSvmPtr, NULL);

// Set the SVM buffer to image description parameter and set the other parameters accordingly

cl_image_desc imageDesc;

memset(&imageDesc, '\0', sizeof(cl_image_desc));

imageDesc.image_type = CL_MEM_OBJECT_IMAGE2D;

imageDesc.image_width = width / 4;

imageDesc.image_height = height;

imageDesc.mem_object= svmImgBuffer;


// Create 2D image, which will be used as input as well as output image

cl_mem image2D = clCreateImage(context, CL_MEM_READ_WRITE, &imageFormat, &imageDesc, NULL, &status);

status = -65,  I want to know why ? thanks

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