compiz crashed with SIGSEGV in CompWindow::~CompWindow()

[Nicolás Abel Carbone]

The error happened while checking Gmail, using Chrome 15.0.874.21 beta. After the error, the ambiance theme failed to load after compiz was reset, and I ended with a generic theme.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: compiz-core 1:0.9.5.94+bzr20110919-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,move,compiztoolbox,snap,vpswitch,resize,gnomecompat,imgpng,mousepoll,grid,regex,place,wall,session,unitymtgrabhandles,animation,workarounds,fade,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
CrashCounter: 1
Date: Thu Sep 22 23:24:48 2011
DistUpgraded: Fresh install
DistroCodename: oneiric
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) [8086:2a02] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: Toshiba America Info Systems Device [1179:ff50]
   Subsystem: Toshiba America Info Systems Device [1179:ff50]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110921.2)
MachineType: TOSHIBA Satellite M305
ProcCmdline: compiz
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-11-generic root=UUID=c63cb018-68a1-48d0-a75e-006b7772ba8f ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x44403a <_ZN10CompWindowD2Ev+698>: mov 0x20(%rax),%r12
 PC (0x0044403a) ok
 source "0x20(%rax)" (0x00000041) not located in a known VMA region (needed readable region)!
 destination "%r12" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 CompWindow::~CompWindow() ()
 CompWindow::~CompWindow() ()
 PrivateScreen::removeDestroyed() ()
 PrivateScreen::processEvents() ()
 CompEventSource::callback() ()
Title: compiz crashed with SIGSEGV in CompWindow::~CompWindow()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 04/10/2009
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V4.00
dmi.board.name: Satellite M305
dmi.board.vendor: TOSHIBA
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvrV4.00:bd04/10/2009:svnTOSHIBA:pnSatelliteM305:pvrPSMD0U-01Y00Q:rvnTOSHIBA:rnSatelliteM305:rvrNotApplicable:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: Satellite M305
dmi.product.version: PSMD0U-01Y00Q
dmi.sys.vendor: TOSHIBA
version.compiz: compiz 1:0.9.5.94+bzr20110919-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu23
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

[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 #856921, 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.