Compiz crashed with SIGSEGV in unity::glib::DBusProxy::Impl::OnProxySignal from unity::glib::Signal3 from ffi_call_unix64()

[DeftPon3]

Compiz crashed (as did Unity). It was the first time that this has happened. It is possible that my display driver is to blame. I am using the proprietary nVidia graphics drivers.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity 5.10.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu3
Architecture: amd64
Date: Sun Apr 15 10:29:08 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
ProcCmdline: compiz
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f2838463480: mov (%rbx),%rdx
 PC (0x7f2838463480) ok
 source "(%rbx)" (0x736e6f63692f6572) not located in a known VMA region (needed readable region)!
 destination "%rdx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 ?? () from /usr/lib/compiz/libunityshell.so
 ?? () from /usr/lib/compiz/libunityshell.so
 unity::glib::DBusProxy::Impl::OnProxySignal(_GDBusProxy*, char*, char*, _GVariant*) () from /usr/lib/libunity-core-5.0.so.5
 unity::glib::Signal3<void, _GDBusProxy*, char*, char*, _GVariant*>::Callback(_GDBusProxy*, char*, char*, _GVariant*, unity::glib::Signal3<void, _GDBusProxy*, char*, char*, _GVariant*>*) () from /usr/lib/libunity-core-5.0.so.5
 ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
Title: compiz crashed with SIGSEGV in unity::glib::DBusProxy::Impl::OnProxySignal()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 ObjectPtr (other=<optimized out>, this=0x7fff5d9e06a0) at /usr/include/Nux-2.0/NuxCore/ObjectPtr.h:51
 operator() (this=<optimized out>) at /build/buildd/unity-5.10.0/plugins/unityshell/src/LauncherController.cpp:275
 operator() (this=<optimized out>) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
 sigc::internal::slot_call0<unity::launcher::Controller::Impl::Impl(Display*, unity::launcher::Controller*)::<lambda()>, void>::call_it(sigc::internal::slot_rep *) (rep=<optimized out>) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:103
 emit (impl=<optimized out>) at /usr/include/sigc++-2.0/sigc++/signal.h:776

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Bilal Akhtar (bilalakhtar)]

Seems like a nux crash. Were you doing anything special around the time of the crash? Also, has this happened again since Precise final release?

[Launchpad Janitor (janitor)]

[Expired for Unity because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

[Expired for unity (Ubuntu) because there has been no activity for 60 days.]