compiz crashed with SIGSEGV in CompWindow::id() when trying to launch gitk from the commandline

[Richard Sheppard]

1. I was using guake terminal
2. I typed "gitk &" to launch gitk in the background
3. subsequent launches from gnome terminal and guake terminal using "gitk" and "gitk &" worked fine.

Output from 'lsb_release -rd':
Description: Ubuntu Natty (development branch)
Release: 11.04

gitk:
  Installed: 1:1.7.4.1-3
  Candidate: 1:1.7.4.1-3
  Version table:
 *** 1:1.7.4.1-3 0
        500 http://gb.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
        100 /var/lib/dpkg/status

guake:
  Installed: 0.4.2-4ubuntu1
  Candidate: 0.4.2-4ubuntu1
  Version table:
 *** 0.4.2-4ubuntu1 0
        500 http://gb.archive.ubuntu.com/ubuntu/ natty/universe amd64 Packages
        100 /var/lib/dpkg/status

git:
  Installed: 1:1.7.4.1-3
  Candidate: 1:1.7.4.1-3
  Version table:
 *** 1:1.7.4.1-3 0
        500 http://gb.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
        100 /var/lib/dpkg/status

I expected gitk to launch as normal. I didn't expect the screen to flicker and for compiz to die and relaunch itself.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.6.8-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
Date: Sat Mar 26 20:28:21 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110302)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x43bef0 <_ZN10CompWindow2idEv>: mov 0x58(%rdi),%rax
 PC (0x0043bef0) ok
 source "0x58(%rdi)" (0x00000058) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 CompWindow::id() ()
 CompScreen::handleEvent(_XEvent*) ()
 PrivateCompositeScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libcomposite.so
 CompScreen::handleEvent(_XEvent*) ()
 PrivateGLScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libopengl.so
Title: compiz crashed with SIGSEGV in CompWindow::id()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #743685, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.