[Bug 43428] New: Segmentation Fault in nv50_screen_fence_update

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

https://bugs.freedesktop.org/show_bug.cgi?id=43428

             Bug #: 43428
           Summary: Segmentation Fault in nv50_screen_fence_update
    Classification: Unclassified
           Product: Mesa
           Version: 7.11
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: philipp-dev-JQq8S24WetGakBO8gow8eQ@public.gmane.org


Created attachment 54024
  --> https://bugs.freedesktop.org/attachment.cgi?id=54024
backtrace of the crash

Nouveau in the combination with the egl_dri2 driver crashes in the
aforementioned function. The egl_gallium driver seems to work fine (tested with
Mesa 7.11.2), but this driver is unfortunately not shipped with fedora.

As the bug vanishes if I use the latest Mesa 7.12-devel (git-ccd4d43), I would
suggest that some of the patches that substitute the function
nv50_screen_fence_update are ported back to 7.11.

Thanks a lot.

For completeness: I'm using a nvidia NVS 3100M and the fedora 2.6.41 kernel.

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