[Bug 30647] New: XServer segfaults when EXANoUploadToScreen is set.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30647

           Summary: XServer segfaults when EXANoUploadToScreen is set.
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: monraaf at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=39216)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=39216)
backtrace

Setting the EXANoUploadToScreen option in xorg.conf makes the xserver segfault. 

git bisect says:

f8fb9312d791af1f77020e8c2d35bb30841ed9aa is the first bad commit
commit f8fb9312d791af1f77020e8c2d35bb30841ed9aa
Author: Karl Tomlinson <karlt+ at karlt.net>
Date:   Sun Aug 22 22:46:33 2010 +1200

    RADEONPrepareAccess_CS: fallback to DFS when pixmap is in VRAM

    This avoids costly CPU VRAM reads and lets EXA manage a system memory cache
    of the portions of pixmaps needed for unaccelerated operations.

    https://bugs.freedesktop.org/show_bug.cgi?id=27139

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