[Bug 30551] New: r600c: Segfaults with Evergreen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30551

           Summary: r600c: Segfaults with Evergreen
           Product: Mesa
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/R600
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: monraaf at gmail.com


Created an attachment (id=39109)
 View: https://bugs.freedesktop.org/attachment.cgi?id=39109
 Review: https://bugs.freedesktop.org/review?bug=30551&attachment=39109

fixes segfaults on Evergreen

With latest git master I see a lot of segfaults with Evergreen GPU. Even with
the simple redbook hello program.

Program received signal SIGSEGV, Segmentation fault.
0xb76eb25f in evergreenSendDB (ctx=0x807df78, atom=0x807aca8) at
evergreen_chip.c:956
956         zheight = rrb->base.Height;

It's trying to dereference a null pointer (rrb) here. Proposed fix attached.

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