[Bug 93548] Grid Autosport causes a hard system crash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93548

            Bug ID: 93548
           Summary: Grid Autosport causes a hard system crash
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: sobkas at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 120748
  --> https://bugs.freedesktop.org/attachment.cgi?id=120748&action=edit
Kernel output,

System:
kernel - 4.4-rc6
mesa - git
radeon 6770

Reproduce:
run qualifications and finish them, system locks up

Tried kgdb, was rather unhelpful, either everything just froze or oopsed in irq
handling code(generally in different places).
I think that there might be some memory corruption
trace[500MB,xz]:
https://drive.google.com/open?id=0B3J0Mg89izcbUzBob1NYNUVlTTg

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