compiz crashed with SIGSEGV in emit() from unity::launcher::Launcher::handle_dbus_method_call()

[Varga-Dudás Gergő]

I installed the ubuntu tweak and i set the "show desktop" and expo to the top left and bottom left corner.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity 5.10.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic-pae 3.2.14
Uname: Linux 3.2.0-23-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu3
Architecture: i386
Date: Sun Apr 15 17:04:44 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120328)
ProcCmdline: compiz
SegvAnalysis:
 Segfault happened at: 0xb352c76d <_ZN5unity8launcher8Launcher23handle_dbus_method_callEP16_GDBusConnectionPKcS5_S5_S5_P9_GVariantP22_GDBusMethodInvocationPv+269>: cmp %edx,0x8(%eax)
 PC (0xb352c76d) ok
 source "%edx" ok
 destination "0x8(%eax)" (0x00000089) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 unity::launcher::Launcher::handle_dbus_method_call(_GDBusConnection*, char const*, char const*, char const*, char const*, _GVariant*, _GDBusMethodInvocation*, void*) () from /usr/lib/compiz/libunityshell.so
 ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
 ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
Title: compiz crashed with SIGSEGV in unity::launcher::Launcher::handle_dbus_method_call()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 emit (impl=0x81, _A_a7=@0xbfbf02cc, _A_a6=@0xbfbf02c8, _A_a5=@0xbfbf02c4, _A_a4=..., _A_a3=..., _A_a2=..., _A_a1=...) at /usr/include/sigc++-2.0/sigc++/signal.h:2559
 emit (_A_a7=@0xbfbf02cc, _A_a6=@0xbfbf02c8, _A_a5=@0xbfbf02c4, _A_a4=..., _A_a3=..., _A_a2=..., _A_a1=..., this=0x8d7fff8) at /usr/include/sigc++-2.0/sigc++/signal.h:3471
 unity::launcher::Launcher::handle_dbus_method_call (connection=0xb0605050, sender=0xafc2c860 ":1.491", object_path=0xafc07320 "/com/canonical/Unity/Launcher", interface_name=0xafc222a8 "com.canonical.Unity.Launcher", method_name=0xafc3cca8 "AddLauncherItemFromPosition", parameters=0x9a39438, invocation=0x92de580, user_data=0x8d7fd48) at /build/buildd/unity-5.10.0/plugins/unityshell/src/Launcher.cpp:2966
 call_in_idle_cb (user_data=0x92de580) at /build/buildd/glib2.0-2.32.0/./gio/gdbusconnection.c:4687
 g_idle_dispatch (source=0xafc2e910, callback=0xb637b620 <call_in_idle_cb>, user_data=0x92de580) at /build/buildd/glib2.0-2.32.0/./glib/gmain.c:4634

[Launchpad Janitor (janitor)]

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

[Andrea Azzarone (azzar1)]

This is a rather old bug report now and there have been no new reports
of this issue. It seems it's been fixed some releases ago, so I'm
marking as such.

If this does still occur, we can either reopen this bug report or open a
new one.