[amdgpu-pro] OpenCL corrupted memory on AMD R9 280X

Submitted by Riccardo De Maria

Assigned to Default DRI bug account

Link to original bug (#106527)

Description

I am trying to use the AMD R9 280X (Tahiti) with the latest Ubuntu 18.04 and AMDGPU-PRO driver.

OpenCL appears to work with

export GPU_FORCE_64BIT_PTR=1

see https://bugs.freedesktop.org/show_bug.cgi?id=102491

however the memory appears corrupted on the device resulting in random data populating partially or entirely the buffers.

A simple OpenCL program is sufficient to show the problem:

https://github.com/rdemaria/opencl_simpletest

in my case.