[Bug 32440] New: Crash with kdenlive (radeon_vbo_space returning NULL)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=32440

           Summary: Crash with kdenlive (radeon_vbo_space returning NULL)
           Product: xorg
           Version: git
          Platform: All
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: paul at flinders.org
         QAContact: xorg-team at lists.x.org


Created an attachment (id=41169)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=41169)
Log file

I have a reproducible crash in the radeon driver when using kdenlive and
scrolling the project timeline). Driver version is the git code from 2010/12/15
(yesterday) but was also present in the pull I did on Oct 29.

Attached is my Xorg.log - looking at the offsets the crash was in
EVERGREENComposite at the line

    vbo[0] = (float)dstX;

with a null pointer dereference - which pretty well must have resulted from
radeon_vbo_space returning NULL.

If I disable EXA and use XAA instead it crashed in EVERGREENSolid, again when
dereferencing the return value from radeon_vbo_space

This has been reported a couple of times eg
https://bugs.freedesktop.org/show_bug.cgi?id=30945 and on the mailing list. I
have slightly different hardware (an Asus EHA5450) so this does look like a
real problem with the Evergreen code.

Other factors
Hardware: Core i7 920
OS: Fedora 14 (x86_64)
Kernel: 2.6.36

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