[Mesa-dev] [Bug 99014] clover is broken in 12.0.4

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99014

            Bug ID: 99014
           Summary: clover is broken in 12.0.4
           Product: Mesa
           Version: 12.0
          Hardware: Other
                OS: All
            Status: NEW
          Keywords: regression
          Severity: normal
          Priority: medium
         Component: Other
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: i.gnatenko.brain at gmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

https://bugzilla.redhat.com/show_bug.cgi?id=1402259

clpeak when mesa 12.0.4 is installed:
Platform: Clover
  Device: AMD OLAND (DRM 2.46.0 / 4.8.11-300.fc25.x86_64, LLVM 3.8.0)
    Driver version  : 12.0.4 (Linux x64)
    Compute units   : 5
    Clock frequency : 680 MHz

    Global memory bandwidth (GBPS)
      float   : radeon: The kernel rejected CS, see dmesg for more information.
radeon: The kernel rejected CS, see dmesg for more information.
radeon: The kernel rejected CS, see dmesg for more information.
radeon: The kernel rejected CS, see dmesg for more information.
(messages repeated)

dmesg has garbage like this:
[ 1444.937817] [drm:si_vm_reg_valid.part.24 [radeon]] *ERROR* Invalid register
0x950c in CS
[ 1444.937818]  0xc0012800
[ 1444.937819]  0x80000000
[ 1444.937819]  0x80000000
[ 1444.937819]  0xc0026900
...

Expected results:

clpeak after downgrading to mesa 12.0.3:

Platform: Clover
  Device: AMD OLAND (DRM 2.46.0 / 4.8.11-300.fc25.x86_64, LLVM 3.8.0)
    Driver version  : 12.0.3 (Linux x64)
    Compute units   : 5
    Clock frequency : 680 MHz

    Global memory bandwidth (GBPS)
      float   : 23.72
      float2  : 24.14
      ...

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