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Assertion failed (u->origdata == data) in deallocate, using OpenCL

Hello everyone,

I am trying to use OpenCL (OpenCV 3.3) on a Hummingboard i.MX6 which supports OpenCL 1.1 EP.

I've created a small program that tests the color conversion function from OpenCV, using OpenCV and using OpenCL.

void    performOpenCL(const std::string &imagePath, bool useOpenCL)
{
    cv::Mat     image;
    cv::UMat    output(cv::USAGE_ALLOCATE_HOST_MEMORY);

    cv::ocl::setUseOpenCL(useOpenCL);
    image = cv::imread(imagePath);
    cv::cvtColor(image, output, cv::COLOR_BGR2HLS);
}

Here is the error :

image description

Has anyone experienced this before ? I'm getting exhausted because I don't really know where this can come from. Also, I don't know how to interpret the error lines : do the line starting with (9xx) come from OpenCL or OpenCV ?

Here is the OpenCV GitHub reference : https://github.com/opencv/opencv/blob/master/modules/core/src/ocl.cpp#L3480

Thank you in advance for your help. :)