Bug 320575

Application: muon-installer (2.0.0)
KDE Platform Version: 4.10.2
Qt Version: 4.8.4
Operating System: Linux 3.8.0-22-generic i686
Distribution: Ubuntu 13.04

-- Information about the crash:
I have a shortcut to muon software center on the desktop. i clicked on it and it crashed.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Muon Software Center (muon-installer), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb3c75980 (LWP 24668))]

Thread 4 (Thread 0xb13aab40 (LWP 24669)):
#0  0xb46d3cc7 in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb59c4f84 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb463cd30 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb45f95a5 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb45f9831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb5d0ec3f in QEventDispatcherGlib::processEvents (this=0xb0a00468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb5cdb3ec in QEventLoop::processEvents (this=this@entry=0xb13aa228, flags=...) at kernel/qeventloop.cpp:149
#7  0xb5cdb6e1 in QEventLoop::exec (this=this@entry=0xb13aa228, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5bc6fec in QThread::exec (this=this@entry=0x9e77dd0) at thread/qthread.cpp:542
#9  0xb5cbaf2d in QInotifyFileSystemWatcherEngine::run (this=0x9e77dd0) at io/qfilesystemwatcher_inotify.cpp:256
#10 0xb5bc9b18 in QThreadPrivate::start (arg=0x9e77dd0) at thread/qthread_unix.cpp:338
#11 0xb46d1d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb59b73de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 3 (Thread 0xb084cb40 (LWP 24670)):
#0  0xb770c424 in __kernel_vsyscall ()
#1  0xb59af301 in select () from /lib/i386-linux-gnu/libc.so.6
#2  0xb5cb7bf3 in QProcessManager::run (this=0xb5e48e78 <processManager()::processManager>) at io/qprocess_unix.cpp:245
#3  0xb5bc9b18 in QThreadPrivate::start (arg=0xb5e48e78 <processManager()::processManager>) at thread/qthread_unix.cpp:338
#4  0xb46d1d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#5  0xb59b73de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xae34cb40 (LWP 24687)):
[KCrash Handler]
#7  QString (other=<error reading variable: Cannot access memory at address 0x4>, this=this@entry=0xae34c038) at /usr/include/qt4/QtCore/qstring.h:725
#8  KConfig::name (this=0x0) at ../../kdecore/config/kconfig.cpp:526
#9  0xb5ed456a in KSharedConfig::openConfig (componentData=..., fileName=..., flags=..., resType=resType@entry=0xafef7308 "config") at ../../kdecore/config/ksharedconfig.cpp:46
#10 0xb5ed477d in KSharedConfig::openConfig (fileName=..., flags=..., resType=resType@entry=0xafef7308 "config") at ../../kdecore/config/ksharedconfig.cpp:35
#11 0xafee7c54 in Application::desktopContents (this=this@entry=0xad57eb98, filename=...) at /build/buildd/muon-2.0.0/libmuon/backends/ApplicationBackend/Application.cpp:424
#12 0xafeeb0ce in Application::Application (this=0xad57eb98, fileName=..., backend=0xa003c48) at /build/buildd/muon-2.0.0/libmuon/backends/ApplicationBackend/Application.cpp:60
#13 0xafee1d01 in init (backend=0xa003c48, thread=0x9d62648) at /build/buildd/muon-2.0.0/libmuon/backends/ApplicationBackend/ApplicationBackend.cpp:104
#14 0xafee5b3c in QtConcurrent::StoredFunctorCall2<QVector<Application*>, QVector<Application*> (*)(QApt::Backend*, QThread*), QApt::Backend*, QThread*>::runFunctor (this=0xa1255a0) at /usr/include/qt4/QtCore/qtconcurrentstoredfunctioncall.h:470
#15 0xafee69ba in QtConcurrent::RunFunctionTask<QVector<Application*> >::run (this=0xa1255a0) at /usr/include/qt4/QtCore/qtconcurrentrunbase.h:106
#16 0xb5bbc504 in QThreadPoolThread::run (this=0xa125e10) at concurrent/qthreadpool.cpp:107
#17 0xb5bc9b18 in QThreadPrivate::start (arg=0xa125e10) at thread/qthread_unix.cpp:338
#18 0xb46d1d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#19 0xb59b73de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb3c75980 (LWP 24668)):
#0  0xb770c424 in __kernel_vsyscall ()
#1  0xb59af301 in select () from /lib/i386-linux-gnu/libc.so.6
#2  0xb5d0bac8 in qt_safe_select (nfds=nfds@entry=14, fdread=fdread@entry=0xbfd10330, fdwrite=fdwrite@entry=0xbfd103b0, fdexcept=fdexcept@entry=0x0, orig_timeout=0x0) at kernel/qcore_unix.cpp:83
#3  0xb5cb42e7 in select_msecs (nfds=14, fdread=0xbfd10330, fdwrite=0xbfd103b0, timeout=-1) at io/qprocess_unix.cpp:1011
#4  0xb5cb5d64 in QProcessPrivate::waitForFinished (this=this@entry=0xa1993a8, msecs=msecs@entry=-1) at io/qprocess_unix.cpp:1227
#5  0xb5c69f96 in QProcess::waitForFinished (this=this@entry=0xbfd104a8, msecs=msecs@entry=-1) at io/qprocess.cpp:1759
#6  0xb5c6cae6 in QProcess::execute (program=..., arguments=...) at io/qprocess.cpp:2159
#7  0xb5f81263 in KToolInvocation::startKdeinit () at ../../kdecore/kernel/ktoolinvocation.cpp:391
#8  0xb5f81441 in KToolInvocation::klauncher () at ../../kdecore/kernel/ktoolinvocation.cpp:62
#9  0xb5f8282c in KToolInvocation::startServiceInternal (this=0x9e73630, _function=_function@entry=0xb608a711 "start_service_by_desktop_path", _name=..., URLs=..., error=error@entry=0xbfd10774, serviceName=serviceName@entry=0x0, pid=pid@entry=0x0, startup_id=..., noWait=noWait@entry=false, workdir=...) at ../../kdecore/kernel/ktoolinvocation.cpp:93
#10 0xb5f848d5 in KToolInvocation::startServiceByDesktopPath (_name=..., URLs=..., error=error@entry=0xbfd10774, serviceName=serviceName@entry=0x0, pid=pid@entry=0x0, startup_id=..., noWait=noWait@entry=false) at ../../kdecore/kernel/ktoolinvocation.cpp:197
#11 0xb6effe17 in KWallet::KWalletDLauncher::getInterface (this=0xa259b90) at ../../kdeui/util/kwallet.cpp:1707
#12 0xb6f01262 in KWallet::Wallet::keyDoesNotExist (wallet=..., folder=..., key=...) at ../../kdeui/util/kwallet.cpp:1654
#13 0xb162a6cb in ?? () from /usr/lib/attica_kde.so
#14 0xb47dade5 in ?? () from /usr/lib/i386-linux-gnu/libattica.so.0.4
#15 0xb47cad1b in Attica::Provider::Provider(Attica::PlatformDependent*, QUrl const&, QString const&, QUrl const&, QString const&, QString const&, QString const&, QString const&, QString const&, QString const&, QString const&, QString const&, QString const&, QString const&, QString const&) () from /usr/lib/i386-linux-gnu/libattica.so.0.4
#16 0xb47dd743 in Attica::ProviderManager::parseProviderFile(QString const&, QString const&) () from /usr/lib/i386-linux-gnu/libattica.so.0.4
#17 0xb47dec46 in Attica::ProviderManager::addProviderFromXml(QString const&) () from /usr/lib/i386-linux-gnu/libattica.so.0.4
#18 0xb0b690a7 in setProviderXML (xmldata=..., this=0xa22ec30) at ../../../knewstuff/knewstuff3/attica/atticaprovider.cpp:83
#19 KNS3::AtticaProvider::setProviderXML (this=0xa22ec30, xmldata=...) at ../../../knewstuff/knewstuff3/attica/atticaprovider.cpp:73
#20 0xb0b41cd5 in KNS3::Engine::slotProviderFileLoaded (this=this@entry=0xa007b78, doc=...) at ../../../knewstuff/knewstuff3/core/engine.cpp:214
#21 0xb0b427e7 in qt_static_metacall (_a=0xbfd10d58, _id=16, _o=0xa007b78, _c=<optimized out>) at ./engine.moc:125
#22 KNS3::Engine::qt_static_metacall (_o=0xa007b78, _c=QMetaObject::InvokeMetaMethod, _id=16, _a=0xbfd10d58) at ./engine.moc:103
#23 0xb5cf2b56 in QMetaObject::activate (sender=sender@entry=0x9de8518, m=m@entry=0xb0b905d8 <KNS3::XmlLoader::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0xbfd10d58) at kernel/qobject.cpp:3539
#24 0xb0b54855 in KNS3::XmlLoader::signalLoaded (this=this@entry=0x9de8518, _t1=...) at ./xmlloader.moc:111
#25 0xb0b5494c in KNS3::XmlLoader::slotJobResult (this=0x9de8518, job=0x9de87a8) at ../../../knewstuff/knewstuff3/core/xmlloader.cpp:77
#26 0xb5cf2b56 in QMetaObject::activate (sender=sender@entry=0x9de87a8, m=m@entry=0xb610d46c <KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0xbfd10e88) at kernel/qobject.cpp:3539
#27 0xb5f55cd5 in KJob::result (this=this@entry=0x9de87a8, _t1=_t1@entry=0x9de87a8) at ./kjob.moc:208
#28 0xb5f55d28 in KJob::emitResult (this=this@entry=0x9de87a8) at ../../kdecore/jobs/kjob.cpp:318
#29 0xb74c3c3d in KIO::SimpleJob::slotFinished (this=this@entry=0x9de87a8) at ../../kio/kio/job.cpp:494
#30 0xb74c418d in KIO::TransferJob::slotFinished (this=0x9de87a8) at ../../kio/kio/job.cpp:1081
#31 0xb74c2498 in qt_static_metacall (_a=0xbfd110ac, _id=7, _o=0x9de87a8, _c=<optimized out>) at ./jobclasses.moc:388
#32 KIO::TransferJob::qt_static_metacall (_o=0x9de87a8, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbfd110ac) at ./jobclasses.moc:375
#33 0xb5cf2b56 in QMetaObject::activate (sender=sender@entry=0xa031da8, m=m@entry=0xb7695480 <KIO::SlaveInterface::staticMetaObject>, local_signal_index=local_signal_index@entry=4, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#34 0xb756d8e5 in KIO::SlaveInterface::finished (this=this@entry=0xa031da8) at ./slaveinterface.moc:185
#35 0xb7570de3 in KIO::SlaveInterface::dispatch (this=0xa031da8, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:172
#36 0xb756d61a in KIO::SlaveInterface::dispatch (this=0xa031da8) at ../../kio/kio/slaveinterface.cpp:88
#37 0xb75604e8 in KIO::Slave::gotInput (this=this@entry=0xa031da8) at ../../kio/kio/slave.cpp:344
#38 0xb7560b44 in KIO::Slave::qt_static_metacall (_o=0xa031da8, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfd1135c) at ./slave.moc:57
#39 0xb5cf2b56 in QMetaObject::activate (sender=sender@entry=0xa32ff08, m=m@entry=0xb7692110 <KIO::Connection::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#40 0xb7487c15 in KIO::Connection::readyRead (this=0xa32ff08) at ./connection.moc:106
#41 0xb74881f8 in dequeue (this=<optimized out>) at ../../kio/kio/connection.cpp:82
#42 KIO::ConnectionPrivate::dequeue (this=0xa23c038) at ../../kio/kio/connection.cpp:71
#43 0xb5ceeb4a in QMetaCallEvent::placeMetaCall (this=0xa3a6e40, object=0xa32ff08) at kernel/qobject.cpp:524
#44 0xb5cf848b in QObject::event (this=0xa32ff08, e=0xa3a6e40) at kernel/qobject.cpp:1194
#45 0xb6250c7c in QApplicationPrivate::notify_helper (this=0x9d890e8, receiver=0xa32ff08, e=0xa3a6e40) at kernel/qapplication.cpp:4567
#46 0xb6253b94 in QApplication::notify (this=0xa3a6e40, receiver=0xa32ff08, e=0xa3a6e40) at kernel/qapplication.cpp:3949
#47 0xb6dc9d01 in KApplication::notify (this=0xbfd11c10, receiver=0xa32ff08, event=0xa3a6e40) at ../../kdeui/kernel/kapplication.cpp:311
#48 0xb5cdc90e in QCoreApplication::notifyInternal (this=0xbfd11c10, receiver=0xa32ff08, event=0xa3a6e40) at kernel/qcoreapplication.cpp:946
#49 0xb5ce0721 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#50 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9d625e0) at kernel/qcoreapplication.cpp:1570
#51 0xb5ce0a8c in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#52 0xb5d0eaa4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#53 postEventSourceDispatch (s=0x9d894b0) at kernel/qeventdispatcher_glib.cpp:279
#54 0xb45f93b3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#55 0xb45f9750 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#56 0xb45f9831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#57 0xb5d0ec21 in QEventDispatcherGlib::processEvents (this=this@entry=0x9d633a8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#58 0xb6307a5a in QGuiEventDispatcherGlib::processEvents (this=0x9d633a8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#59 0xb5cdb3ec in QEventLoop::processEvents (this=this@entry=0xbfd11b38, flags=...) at kernel/qeventloop.cpp:149
#60 0xb5cdb6e1 in QEventLoop::exec (this=this@entry=0xbfd11b38, flags=...) at kernel/qeventloop.cpp:204
#61 0xb5ce13fa in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#62 0xb624efc4 in QApplication::exec () at kernel/qapplication.cpp:3828
#63 0x0805d85b in main (argc=5, argv=0xbfd11ce4) at /build/buildd/muon-2.0.0/installer/main.cpp:71

Reported using DrKonqi