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[PurpleFool <tb@xxxxxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xephyr


Since the Lucid release, starting a Xephyr server and running vncviewer against it results in a SIGSEGV.

The backtrace (running with -sync) was:
0: Xephyr (xorg_backtrace+0x28) [0x57ebb8]
1: Xephyr (0x400000+0x1827cd) [0x5827cd]
2: /lib/libpthread.so.0 (0x7f57bdbc2000+0xf8f0) [0x7f57bdbd18f0]
Segmentation fault at address (nil)

With the previous Xephyr version I tried running Xephyr under gdb to get
more info but that suppressed the symptoms.  Now I can run, for
instance, xload against the server but vncviewer dies.

I've attached a core generated with the above backtrace.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xephyr 2:1.7.6-2ubuntu7.1
ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
Architecture: amd64
Date: Sat Jun 19 10:24:19 2010
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xorg-server

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


** Tags: amd64 apport-bug lucid

-- 
NULL deref in __restore_rt when attempting to start vncviewer
https://bugs.launchpad.net/bugs/596328
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