compiz crashed with SIGSEGV in sigc::signal_base::impl()

[Adrian Borucki]

Binary package hint: unity

I ran CompizConfig Setting Manager and activated Window Previews plugin. After this everything got frozen for a few seconds, finally Compiz crashed and restarted.

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 x86_64
Architecture: amd64
CrashCounter: 1
Date: Tue Apr 5 15:00:57 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110321)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_GB:en_US:en
 LANG=en_US.UTF-8
 LC_MESSAGES=en_GB.UTF-8
 SHELL=/bin/zsh
SegvAnalysis:
 Segfault happened at: 0x7fca86e5f2f6 <_ZNK4sigc11signal_base4implEv+22>: mov 0x8(%rdi),%rbx
 PC (0x7fca86e5f2f6) ok
 source "0x8(%rdi)" (0x000000e8) not located in a known VMA region (needed readable region)!
 destination "%rbx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 sigc::signal_base::impl() const () from /usr/lib/libsigc-2.0.so.0
 sigc::signal_base::connect(sigc::slot_base const&) () from /usr/lib/libsigc-2.0.so.0
 UnityScreen::UnityScreen(CompScreen*) () from /usr/lib/compiz/libunityshell.so
 CompPlugin::VTableForScreenAndWindow<UnityScreen, UnityWindow>::initScreen(CompScreen*) () from /usr/lib/compiz/libunityshell.so
 CompManager::initPlugin(CompPlugin*) ()
Title: compiz crashed with SIGSEGV in sigc::signal_base::impl()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare sudo

[Omer Akram (om26er)]

Thanks for the bug report. This particular bug has already been reported and is a duplicate of bug 745617, so is being marked as such. Any further discussion regarding the bug should occur in the other report. Feel free to report any other bugs you may find.