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[Nathaniel Smith <njs@xxxxxxxxx>]

Public bug reported:

There is a bug in at least xorg-server 1.7.6 (as shipped in Lucid) where
certain uses of XTest cause a null pointer dereference and the server
crashes.

XTest probably isn't used much in general, but this causes very serious
problems for 'xpra' -- basically it is unusable in Lucid (at least for
me) because the X server keeps crashing under it. I would not be
surprised if x11vnc had a similar problem.

(NB, I am the upstream for xpra.)

This bug has been fixed in upstream X.org, and I bisected the fix to this commit:
  http://cgit.freedesktop.org/xorg/xserver/commit/?id=af170a4ab76d33254dd4e54a33bb410fa1624739

This bug-fix commit has also been backported to the 1.7 stable tree, and is included in xorg-server 1.7.7:
  http://cgit.freedesktop.org/xorg/xserver/commit/?id=ad48184752970541aa153bf2961a2d7da1a910b5
and I have confirmed that xpra works with 1.7.7.

Please upgrade to 1.7.7, or apply this patch to your 1.7.6.

(This has been reported several times as a bug in xpra, see:
http://code.google.com/p/partiwm/issues/detail?id=20)

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xvfb 2:1.7.6-2ubuntu7.2
ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-generic i686
Architecture: i386
Date: Sun Jul 18 22:22:12 2010
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/usr/bin/zsh
SourcePackage: xorg-server

** Affects: parti-all (Ubuntu)
     Importance: Undecided
         Status: New

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


** Tags: apport-bug i386 lucid

-- 
X server segfaults when using XTest
https://bugs.launchpad.net/bugs/607071
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