compiz crashed with SIGSEGV in RegexExp::evaluate()

[Ross C]

Binary package hint: unity

Compiz crashed upon login, hadn't opened any applications yet and the only thing to load just prior to compiz crashing was conky.

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

apt-cache policy compiz
compiz:
  Installed: 1:0.9.4git20110322-0ubuntu5
  Candidate: 1:0.9.4git20110322-0ubuntu5
  Version table:
 *** 1:0.9.4git20110322-0ubuntu5 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty/main i386 Packages
        100 /var/lib/dpkg/status

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.8.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
Architecture: i386
CrashCounter: 1
Date: Sat Apr 2 08:45:14 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0xadb36c <_ZN8RegexExp8evaluateEP10CompWindow+108>: mov (%edx),%edx
 PC (0x00adb36c) ok
 source "(%edx)" (0x00000014) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 RegexExp::evaluate(CompWindow*) () from /usr/lib/compiz/libregex.so
 ?? ()
 ?? ()
 ?? ()
 DecorWindow::update(bool) () from /usr/lib/compiz/libdecor.so
Title: compiz crashed with SIGSEGV in RegexExp::evaluate()
UpgradeStatus: Upgraded to natty on 2011-04-01 (1 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 RegexExp::evaluate (this=0x8a50c30, w=0x9507e10) at /build/buildd/compiz-0.9.4git20110322/plugins/regex/src/regex.cpp:137
 matchEvalOps (list=..., w=0x9507e10) at /build/buildd/compiz-0.9.4git20110322/src/match.cpp:481
 matchEvalOps (list=..., w=0x9507e10) at /build/buildd/compiz-0.9.4git20110322/src/match.cpp:476
 matchEvalOps (list=..., w=0x9507e10) at /build/buildd/compiz-0.9.4git20110322/src/match.cpp:476
 DecorWindow::update (this=0x94dd6b8, allowDecoration=true) at /build/buildd/compiz-0.9.4git20110322/plugins/decor/src/decor.cpp:877

[Juan Montoya (th3pr0ph3t)]

I had a crash when i opened gnome-appearance-properties.
Sometimes it crashes when I click on a combo box.

[Juan Montoya (th3pr0ph3t)]

importance "Undecided", I hope you can't decide between Medium, High and Critical.
Because ubuntu is useless with this bug :/

[Ross C (human-error13)]

I ended up reinstalling Ubuntu from the 11.04 beta, rather than updating from 10.10 as I initially did, and I see a lot fewer bugs/crashes. This particular bug is one I've not experienced since the new install, as well as the bug which causes software-center to crash upon open.
@Th3Proph3t, I know it's a radical step, but if you did the upgrade from 10.10 and are experiencing lots of problems and crashes, you should do what I did and do a clean install from the beta available on ubuntu's website.
Cheers,
Rossen

[Sam Spilsbury (smspillaz)]

This is fixed.