compiz crashed with SIGSEGV in pthread_mutex_lock()

Binary package hint: compiz

Description: Ubuntu Natty (development branch)
Release: 11.04

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

This is possibly a different bug than the other couple with the same name. Apport notified me of this crash after I logged in. However, I would not have noticed the crash without the Apport popup. Compiz does not appear to have crashed as my desktop is entirely usable.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.4git20110322-0ubuntu5
ProcVersionSignature: Ubuntu 2.6.38-8.40-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
NonfreeKernelModules: wl
Architecture: i386
CheckboxSubmission: 4f5564c50a42755fd0a913a86e07ee6a
CheckboxSystem: b845c366ea09c60efa3a45c1b5b21525
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
CrashCounter: 1
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1024x576
 edid-base64: AP///////wAiZOgDgPkBABsTAQOAFg14CrVlnF1ckyceUFQAAAABAQEBAQEBAQEBAQEBAQEBLBUAMEFAaCBdI5UI3n0AAAAZAAAA/gAAAAAAAAAAAAAAAAAAAAAA/ABIU0QxMDFQRlcxCiAgAAAAEAAKICAgICAgICAgICAgAFE=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Tue Apr 5 20:34:13 2011
DistUpgraded: Log time: 2011-03-12 18:10:27.160182
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
 bcmwl, 5.100.82.38+bdcom, 2.6.35-28-generic, i686: installed
 bcmwl, 5.100.82.38+bdcom, 2.6.38-7-generic, i686: installed
 bcmwl, 5.100.82.38+bdcom, 2.6.38-8-generic, i686: installed
 bcmwl, 5.100.82.38+bdcom, 2.6.38-6-generic, i686: installed
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company Device [103c:308f]
   Subsystem: Hewlett-Packard Company Device [103c:308f]
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
InstallationMedia_: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
MachineType: Hewlett-Packard HP Mini 110-1000
ProcCmdline: compiz --replace
ProcEnviron:
 LANGUAGE=en_CA:en
 PATH=(custom, user)
 LANG=en_HK.utf8
 LC_MESSAGES=en_CA.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=8d41dbfd-e56a-49c1-96ec-2f9f9db0b885 ro quiet crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-8.40-generic 2.6.38.2
Renderer: Unknown
SegvAnalysis:
 Segfault happened at: 0x84533d <pthread_mutex_lock+29>: mov 0xc(%esi),%edi
 PC (0x0084533d) ok
 source "0xc(%esi)" (0x00000015) not located in a known VMA region (needed readable region)!
 destination "%edi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
 ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
 Glib::Source::unreference() const () from /usr/lib/libglibmm-2.4.so.1
 PrivateScreen::~PrivateScreen() ()
 PrivateScreen::~PrivateScreen() ()
Title: compiz crashed with SIGSEGV in pthread_mutex_lock()
UpgradeStatus: Upgraded to natty on 2011-03-13 (23 days ago)
UserGroups: adm admin audio cdrom dialout lpadmin mythtv netdev plugdev sambashare
dmi.bios.date: 09/16/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 308F0 Ver. F.17
dmi.board.name: 308F
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 02.10
dmi.chassis.asset.tag: CNU9279FM5
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr308F0Ver.F.17:bd09/16/2009:svnHewlett-Packard:pnHPMini110-1000:pvr03A8100000000000100300000:rvnHewlett-Packard:rn308F:rvrKBCVersion02.10:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Mini 110-1000
dmi.product.version: 03A8100000000000100300000
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.4git20110322-0ubuntu5
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.1-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu6
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6