unity-2d-shell crashed with SIGSEGV in QDBusAbstractInterface::asyncCallWithArgumentList()

[Alexandru Cucu]

Crashed for no reason.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity-2d-shell 5.10.0-0ubuntu1
Uname: Linux 3.3.0-030300rc7-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.0.1-0ubuntu4
Architecture: amd64
CrashCounter: 1
Date: Tue Apr 17 20:37:50 2012
ExecutablePath: /usr/bin/unity-2d-shell
ProcCmdline: unity-2d-shell
SegvAnalysis:
 Segfault happened at: 0x7f26d2c744dd <_ZN22QDBusAbstractInterface25asyncCallWithArgumentListERK7QStringRK5QListI8QVariantE+45>: cmpb $0x0,0xd4(%rbp)
 PC (0x7f26d2c744dd) ok
 source "$0x0" ok
 destination "0xd4(%rbp)" (0x000000d4) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: unity-2d
StacktraceTop:
 QDBusAbstractInterface::asyncCallWithArgumentList(QString const&, QList<QVariant> const&) () from /usr/lib/x86_64-linux-gnu/libQtDBus.so.4
 BamfView::icon() const () from /usr/lib/libQtBamf.so.1
 WindowInfo::icon() const () from /usr/lib/libunity-2d-private.so.0
 WindowInfo::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libunity-2d-private.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libQtDeclarative.so.4
Title: unity-2d-shell crashed with SIGSEGV in QDBusAbstractInterface::asyncCallWithArgumentList()
UpgradeStatus: Upgraded to precise on 2012-04-07 (10 days ago)
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare vboxusers

[Apport retracing service (apport)]

StacktraceTop:
 QDBusAbstractInterface::asyncCallWithArgumentList (this=0x61cb20, method=..., args=...) at qdbusabstractinterface.cpp:495
 Icon (this=0x61cb20) at /build/buildd/libqtbamf-0.2.3/bamf-view-proxy.h:64
 BamfView::icon (this=<optimized out>) at /build/buildd/libqtbamf-0.2.3/bamf-view.cpp:127
 WindowInfo::icon (this=0x2f38020) at /build/buildd/unity-2d-5.10.0/libunity-2d-private/src/windowinfo.cpp:237
 WindowInfo::qt_metacall (this=0x2f38020, _c=<optimized out>, _id=4, _a=0x7fff8dbad700) at /build/buildd/unity-2d-5.10.0/obj-x86_64-linux-gnu/libunity-2d-private/src/windowinfo.moc:164

[Launchpad Janitor (janitor)]

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

[Giuseppe Terrasi (giuseppeterrasi-deactivatedaccount)]

A similar bug affect me: unity-2d-shell crashed with signal 7 in QDBusAbstractInterface::asyncCallWithArgumentList()

It happended with no action. During crash I have open this application: gnome-terminal, google-chrome, xchat.

All log are avaible in attach to #986092 (is a private bug at the moment).

[Paweł Stołowski (stolowski)]

Hi Giuseppe,
Are you running up-to-date Precise? In particular, what's your version of libqtbamf1?

[Giuseppe Terrasi (giuseppeterrasi-deactivatedaccount)]

Hi
My system is up-to-date.

About libqtbamf1:

aptitude search libqtbamf1
i libqtbamf1 - Qt binding and QML plugin for bamf - shared library
p libqtbamf1:i386 - Qt binding and QML plugin for bamf - shared library

apt-cache show libqtbamf1
Package: libqtbamf1
Priority: optional
Section: libs
Installed-Size: 241
Maintainer: Ubuntu Developers <email address hidden>
Original-Maintainer: Olivier Tilloy <email address hidden>
Architecture: amd64
Source: libqtbamf
Version: 0.2.3-0ubuntu1
Depends: libc6 (>= 2.2.5), libgcc1 (>= 1:4.1.1), libqt4-dbus (>= 4:4.5.3), libqt4-declarative (>= 4:4.7.0~rc1), libqtcore4 (>= 4:4.7.0~beta1), libstdc++6 (>= 4.1.1), bamfdaemon
Filename: pool/main/libq/libqtbamf/libqtbamf1_0.2.3-0ubuntu1_amd64.deb
Size: 66640
MD5sum: f890a63444ea1f84b3c9e3fc6df476dc
SHA1: b71dbffa30c06029819bcd0bb8036a6535b4ffd7
SHA256: fdbee2a780a0e2af203be1b5dfa01a6c75558442925fcc403d9fd226e9f3854d
Description-en: Qt binding and QML plugin for bamf - shared library
 Qt binding and QML plugin for the bamf dbus daemon semi-automatically
 generated with qdbusxml2cpp and matching the GObject library structure.
Description-md5: 0ac9b6c0804771acd8509ca39acd35fa
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu
Supported: 5y
Task: ubuntu-desktop, ubuntu-usb, edubuntu-desktop, edubuntu-usb

Feel free to ask more information.
Cheers