ubuntu-x-swat team mailing list archive

[frank <protterg@xxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-core

this bug is caused while the root window is visited, then the code still
try to visit the parent drawable.id. so the segment fault is there. the
following code change is about how to fix it and passed the test.

here is the diff file for xorg-server-1.10.1/Xext/panoramiXprocs.c
565,566c565
<       if((pWin->parent == screenInfo.screens[0]->root) ||
<            (pWin->parent->drawable.id == screenInfo.screens[0]->screensaver.wid))
---
>         if((pWin->parent == screenInfo.screens[0]->root))
568,570c567,577
<          rep.x += screenInfo.screens[0]->x;
<          rep.y += screenInfo.screens[0]->y;
<       }
---
>            rep.x += screenInfo.screens[0]->x;
>            rep.y += screenInfo.screens[0]->y;
>         }
>         if(pWin->parent != 0)
>         {
>           if((pWin->parent->drawable.id == screenInfo.screens[0]->screensaver.wid))
>             {
>              rep.x += screenInfo.screens[0]->x;
>              rep.y += screenInfo.screens[0]->y;
>           }
>         }

** Affects: xorg-server (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/795352

Title:
  while enalbled the xinerama the xserver would face a segment fault

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