Public bug reported:

Not sure if this could be a dupe.

I don't recall what I was doing before this happened; nothing unusual, I
think.

Thanks.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: unity 6.12.0daily13.03.20-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-14.24-generic 3.8.4
Uname: Linux 3.8.0-14-generic x86_64
ApportVersion: 2.9.2-0ubuntu2
Architecture: amd64
Date: Sun Mar 24 20:12:25 2013
ExecutablePath: /usr/bin/compiz
MarkForUpload: True
ProcCmdline: compiz
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fb7e32c16ca 
<_ZN18PluginClassHandlerIN5unity11UnityWindowE10CompWindowLi0EE11getInstanceEPS2_+42>:
    mov    (%rax,%rdx,8),%rbx
 PC (0x7fb7e32c16ca) ok
 source "(%rax,%rdx,8)" (0x00000088) not located in a known VMA region (needed 
readable region)!
 destination "%rbx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 PluginClassHandler<unity::UnityWindow, CompWindow, 
0>::getInstance(CompWindow*) () from /usr/lib/compiz/libunityshell.so
 PluginClassHandler<unity::UnityWindow, CompWindow, 0>::get(CompWindow*) () 
from /usr/lib/compiz/libunityshell.so
 unity::UnityScreen::OnTerminateSpread() () from 
/usr/lib/compiz/libunityshell.so
 sigc::internal::signal_emit0<void, 
sigc::nil>::emit(sigc::internal::signal_impl*) () from 
/usr/lib/compiz/libunityshell.so
 unity::PluginAdapter::OnScreenUngrabbed() () from 
/usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in PluginClassHandler<unity::UnityWindow, 
CompWindow, 0>::getInstance()
UpgradeStatus: Upgraded to raring on 2012-06-14 (283 days ago)
UserGroups: adm cdrom dip lpadmin nopasswdlogin plugdev sambashare sudo

** Affects: unity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-crash need-amd64-retrace raring

** Information type changed from Private to Public

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https://bugs.launchpad.net/bugs/1159906

Title:
  compiz crashed with SIGSEGV in PluginClassHandler<unity::UnityWindow,
  CompWindow, 0>::getInstance()

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