[Bug 25266] New: Xorg crashes on specific action in an application - confirmed link to driver

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25266

           Summary: Xorg crashes on specific action in an application -
                    confirmed link to driver
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: trueurssian at gmail.com
         QAContact: xorg-team at lists.x.org


Xorg segfaults and quits when zooming in - in PCBNew, the Pcb routing suite
that is part of the kicad electronics CAD suite. Only happens when using the
radeon driver, no problems with nvidia cards or the generic VESA driver on the
ATI card. on the same version of the X server. 

Relevant information:

Radeon mobile x300 video card
Kernel 2.6.31
Xorg 1.7.1.902 (confirmed with other 1.7.1.x xorgs as well)
xf86-video-ati 6.12.99.git20091014-1
Kicad 20090216-final (also confirmed with latest svn build)

Description:
In PCBNEW, upon zooming in to zoom 50 or higher. Xorg crashes reporting a
segmentation fault.

This only happens when there is a graphical Arc on the drawing layer OR
edges layer of the pcboard. Otherwise everything works as usual.

This only started happening on update from Xorg 1.6.9 (and its related drivers)

The actual complaint is "segfault at address(nil)"

There is more specific information dumped onto the console if I start X
manually but for some reason it doesnt get saved to the log (but the backtrace
does so... strange)


Relevent section of xorg.conf

Section "Device"
        Identifier  "RV370"
        Driver      "radeon"
        Card        "x300"

        Option "AccelMethod" "EXA"
        Option "EnablePageFlip" "on"
        Option "DynamicClocks" "off"
        Option "BusType" "PCIE"
        Option "ColorTiling" "on"
        Option "EXAVsync" "yes"

        Option  "MergedFB" "on"
        Option  "MonitorLayout" "LVDS, CRT"
        Option  "CRT2Hsync" "50-75"
        Option  "CRT2VRefresh" "50-82"
EndSection

Section "Module"
        Load  "ddc"  # ddc probing of monitor
        Load  "dbe"
        Load  "dri"
        Load  "extmod"
        Load  "glx"
        Load  "drm"
        Load  "bitmap" # bitmap-fonts
        Load  "type1"
        Load  "freetype"
        Load  "record"
EndSection


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