[Bug 31573] New: Crash in EXA code (HD5770)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=31573

           Summary: Crash in EXA code (HD5770)
           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: blade at debian.org
         QAContact: xorg-team at lists.x.org


Created an attachment (id=40226)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=40226)
Xorg log file

Using the a git snapshot from Wednesday (xf86-video-radeon,master) I seem to
get crashes when some certain operation happens. I was able to play videos with
reduced CPU load and everything was fine untilEclipse reported a "trap divide
error" (this may be related or not, don't know). Some minutes later the
X-server crashed while I was working in Eclipses debugger. Meanwhile I was able
to reproduce this or similar crash 4-5 times, it's almost reliably reproducible
with DDD and graphical variable display; double-clicking a
pointer brings the X server down instead of showing buble with the pointed
contents.

I am using a git snapshot from yesterday built with Xorg 1.9 from Debian
Experimental, on a Sid/amd64 system, kernel 2.6.34 with TuxOnIce rc2.

A quick backtrace result is attached. IMHO radeon_vbo_space returns a NULL
pointer (vb) which is never checked.

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