[Bug 101584] clover: ethminer -G --benchmark: ring buffer overflow, GPU faults

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101584

            Bug ID: 101584
           Summary: clover: ethminer -G --benchmark: ring buffer overflow,
                    GPU faults
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: haagch at frickel.club
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 132229
  --> https://bugs.freedesktop.org/attachment.cgi?id=132229&action=edit
dmesg

Tested with my RX 480 on mesa git and Linux 4.11 and 4.12-rc.

To reproduce, get https://github.com/ethereum-mining/ethminer
in libethash-cl/ethash_cl_miner_kernel.cl add
#pragma OPENCL EXTENSION cl_clang_storage_class_specifiers : enable
then cmake . and make and in ethminer/ run ./ethminer -G --benchmark

it outputs some progress and at 97% something goes wrong and I get GPU faults
and/or GPU hangs.

Interestingly with the closed source OpenCL runtime from amdgpu-pro it fails at
97% too.

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