[Bug 100995] System hang using OpenGL 4+ features

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100995

            Bug ID: 100995
           Summary: System hang using OpenGL 4+ features
           Product: Mesa
           Version: 17.0
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: Paul.Hancock.17041993 at live.com
        QA Contact: dri-devel at lists.freedesktop.org

This is easily reproducible via unigine's heaven benchmark, simply running it
with normal tessellation settings results in the screen flashing black a few
times and then an eventual system hang before anything even starts to render. A
power cycle is the only way out.

Simply creating a 4.5 context will not trigger the bug, haven't been able to
fully test what causes the hang specifically as accessible tools I've found are
not compatible with mesa due to only creating a default context (which is
currently 3.0), thus crashing on init.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1689408

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