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[Bug 861793] [NEW] compiz crashed with SIGSEGV in PrivateWindow::addWindowStackChanges()


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after nautilus crash screen freeze, i've changed to session tt1 (ctrl+alt+f1) and return to desktop (ctrl+alt+f7).
system responsive but crash occours.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity 4.18.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu2
Architecture: i386
CrashCounter: 1
Date: Wed Sep 28 22:28:07 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110927)
ProcCmdline: compiz
 Segfault happened at: 0x808420a <_ZN13PrivateWindow21addWindowStackChangesEP14XWindowChangesP10CompWindow+42>:	mov    0x34(%edx),%ebx
 PC (0x0808420a) ok
 source "0x34(%edx)" (0x00000034) not located in a known VMA region (needed readable region)!
 destination "%ebx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
 PrivateWindow::addWindowStackChanges(XWindowChanges*, CompWindow*) ()
 CompWindow::lower() ()
 CompScreen::handleEvent(_XEvent*) ()
 PrivateCompositeScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libcomposite.so
 CompScreen::handleEvent(_XEvent*) ()
Title: compiz crashed with SIGSEGV in PrivateWindow::addWindowStackChanges()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout disk lpadmin plugdev sambashare

** Affects: unity
     Importance: Critical
     Assignee: Sam Spilsbury (smspillaz)
         Status: Fix Released

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: Fix Committed

** Tags: apport-crash i386 oneiric running-unity
compiz crashed with SIGSEGV in PrivateWindow::addWindowStackChanges()
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