Application: kactivitymanagerd (1.0)
KDE Platform Version: 4.8.00 (4.8.0 (Compiled from sources)
Qt Version: 4.8.0
Operating System: Linux 3.2.1-gentoo-r2 x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
- What I was doing when the application crashed:

since recent upgrade, every KDE login begins with this error message...

The crash can be reproduced every time.

-- Backtrace:
Application: KDE Activity Manager (kactivitymanagerd), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1f2c774760 (LWP 2471))]

Thread 2 (Thread 0x7f1f1cc70700 (LWP 2481)):
[KCrash Handler]
#6  QMutex::lock (this=0x65007200635288) at thread/qmutex.cpp:150
#7  0x00007f1f274eb6cc in QMutexLocker (m=<optimized out>, this=0x7f1f1cc6f330) at /usr/include/qt4/QtCore/qmutex.h:102
#8  Soprano::Error::ErrorCache::clearError (this=0x11179f0) at /var/tmp/portage/dev-libs/soprano-2.7.4/work/soprano-2.7.4/soprano/error.cpp:238
#9  0x00007f1f274ebc18 in Soprano::Error::ErrorCache::setError (this=0x11179f0, error=...) at /var/tmp/portage/dev-libs/soprano-2.7.4/work/soprano-2.7.4/soprano/error.cpp:225
#10 0x00007f1f2727f591 in Soprano::Client::DBusModel::executeQuery (this=0x11179e0, query=..., language=<optimized out>, userQueryLanguage=...) at /var/tmp/portage/dev-libs/soprano-2.7.4/work/soprano-2.7.4/client/dbus/dbusmodel.cpp:112
#11 0x00007f1f2b7ae241 in Nepomuk::MainModel::executeQuery (this=0x10bc8a0, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/core/nepomukmainmodel.cpp:212
#12 0x00007f1f274f9edc in Soprano::FilterModel::executeQuery (this=0x10cc760, query=..., language=<optimized out>, userQueryLanguage=...) at /var/tmp/portage/dev-libs/soprano-2.7.4/work/soprano-2.7.4/soprano/filtermodel.cpp:164
#13 0x00007f1f1cc78b9c in activityResource (id=...) at /var/tmp/portage/kde-base/kactivities-4.8.0/work/kactivities-4.8.0/service/plugins/nepomuk/NepomukCommon.cpp:49
#14 0x00007f1f1cc7f137 in RankingsUpdateThread::run (this=0x111e380) at /var/tmp/portage/kde-base/kactivities-4.8.0/work/kactivities-4.8.0/service/plugins/nepomuk/Rankings.cpp:104
#15 0x00007f1f2b083327 in QThreadPrivate::start (arg=0x111e380) at thread/qthread_unix.cpp:298
#16 0x00007f1f29ab6ccc in start_thread (arg=0x7f1f1cc70700) at pthread_create.c:301
#17 0x00007f1f29da607d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f1f2c774760 (LWP 2471)):
#0  0x00007f1f29d9fa13 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f1f2b1ad0fa in qt_safe_select (nfds=5, fdread=0x7fff7d187830, fdwrite=0x7fff7d1877b0, fdexcept=0x0, orig_timeout=0x7fff7d1878b0) at kernel/qcore_unix.cpp:93
#2  0x00007f1f2983e3f9 in QNativeSocketEnginePrivate::nativeSelect (this=0x1100440, timeout=<optimized out>, checkRead=<optimized out>, checkWrite=<optimized out>, selectForRead=0x7fff7d18796f, selectForWrite=0x7fff7d18796e) at socket/qnativesocketengine_unix.cpp:1115
#3  0x00007f1f2983c578 in QNativeSocketEngine::waitForReadOrWrite (this=0x1007c40, readyToRead=0x7fff7d18796f, readyToWrite=0x7fff7d18796e, checkRead=true, checkWrite=<optimized out>, msecs=600000, timedOut=0x0) at socket/qnativesocketengine.cpp:1000
#4  0x00007f1f298344ef in QAbstractSocket::waitForReadyRead (this=0x10feb98, msecs=600000) at socket/qabstractsocket.cpp:1888
#5  0x00007f1f2725be64 in Soprano::Client::ClientConnection::executeQuery (this=0x1100270, modelId=351189731, query=..., type=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at /var/tmp/portage/dev-libs/soprano-2.7.4/work/soprano-2.7.4/client/clientconnection.cpp:269
#6  0x00007f1f2725d6e5 in Soprano::Client::ClientModel::executeQuery (this=0x10fcc80, query=..., language=<optimized out>, userQueryLanguage=...) at /var/tmp/portage/dev-libs/soprano-2.7.4/work/soprano-2.7.4/client/clientmodel.cpp:101
#7  0x00007f1f2b7ae241 in Nepomuk::MainModel::executeQuery (this=0x10bc8a0, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/core/nepomukmainmodel.cpp:212
#8  0x00007f1f274f9edc in Soprano::FilterModel::executeQuery (this=0x10cc760, query=..., language=<optimized out>, userQueryLanguage=...) at /var/tmp/portage/dev-libs/soprano-2.7.4/work/soprano-2.7.4/soprano/filtermodel.cpp:164
#9  0x00007f1f2b7c7a66 in Nepomuk::Types::EntityPrivate::load (this=0x1102b30) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/types/entity.cpp:76
#10 0x00007f1f2b7cbcb0 in Nepomuk::Types::ClassPrivate::load (this=0x1102b30) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/types/class.cpp:54
#11 0x00007f1f2b7c6964 in Nepomuk::Types::EntityPrivate::init (this=0x1102b30) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/types/entity.cpp:51
#12 0x00007f1f2b7cd312 in Nepomuk::Types::Class::isSubClassOf (this=<optimized out>, other=...) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/types/class.cpp:493
#13 0x00007f1f2b7a12eb in Nepomuk::ResourceData::constHasType (this=0x10bcb50, uri=...) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/core/resourcedata.cpp:230
#14 0x00007f1f2b7a2b10 in Nepomuk::ResourceData::load (this=0x10bcb50) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/core/resourcedata.cpp:401
#15 0x00007f1f2b7a2fbc in Nepomuk::ResourceData::property (this=0x10bcb50, uri=...) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/core/resourcedata.cpp:240
#16 0x00007f1f2b7b84f2 in Nepomuk::Resource::property (this=0x7fff7d1884e0, uri=...) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/core/resource.cpp:301
#17 0x00007f1f2b7b864d in Nepomuk::Resource::symbols (this=<optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/nepomuk/core/resource.cpp:842
#18 0x0000000000407c7a in ActivityManager::ActivityIcon (this=<optimized out>, id=...) at /var/tmp/portage/kde-base/kactivities-4.8.0/work/kactivities-4.8.0/service/ActivityManager.cpp:736
#19 0x0000000000415621 in ActivityManagerAdaptor::ActivityIcon (this=<optimized out>, id=...) at /var/tmp/portage/kde-base/kactivities-4.8.0/work/kactivities-4.8.0_build/service/activitymanageradaptor.cpp:45
#20 0x0000000000415ad9 in ActivityManagerAdaptor::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /var/tmp/portage/kde-base/kactivities-4.8.0/work/kactivities-4.8.0_build/service/activitymanageradaptor.moc:186
#21 0x0000000000415dfb in ActivityManagerAdaptor::qt_metacall (this=0x1103610, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff7d188640) at /var/tmp/portage/kde-base/kactivities-4.8.0/work/kactivities-4.8.0_build/service/activitymanageradaptor.moc:255
#22 0x00007f1f2b4ff632 in QDBusConnectionPrivate::deliverCall (this=0xf41f30, object=0x1103610, msg=..., metaTypes=..., slotIdx=12) at qdbusintegrator.cpp:947
#23 0x00007f1f2b50077d in QDBusConnectionPrivate::activateCall (this=0xf41f30, object=0x1103610, flags=273, msg=...) at qdbusintegrator.cpp:857
#24 0x00007f1f2b500fc9 in QDBusConnectionPrivate::activateObject (this=0xf41f30, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1423
#25 0x00007f1f2b5011db in QDBusActivateObjectEvent::placeMetaCall (this=0x11180a0) at qdbusintegrator.cpp:1537
#26 0x00007f1f2b195f7e in QObject::event (this=0x7fff7d189600, e=<optimized out>) at kernel/qobject.cpp:1195
#27 0x00007f1f2a52e645 in QApplication::event (this=0x7fff7d189600, e=0x11180a0) at kernel/qapplication.cpp:2532
#28 0x00007f1f2a52c014 in QApplicationPrivate::notify_helper (this=0xf4c710, receiver=0x7fff7d189600, e=0x11180a0) at kernel/qapplication.cpp:4550
#29 0x00007f1f2a530b7f in QApplication::notify (this=<optimized out>, receiver=0x7fff7d189600, e=0x11180a0) at kernel/qapplication.cpp:4411
#30 0x00007f1f2bc87376 in KApplication::notify (this=0x7fff7d189600, receiver=0x7fff7d189600, event=0x11180a0) at /var/tmp/portage/kde-base/kdelibs-4.8.0-r1/work/kdelibs-4.8.0/kdeui/kernel/kapplication.cpp:311
#31 0x00007f1f2b1816e3 in QCoreApplication::notifyInternal (this=0x7fff7d189600, receiver=0x7fff7d189600, event=0x11180a0) at kernel/qcoreapplication.cpp:876
#32 0x00007f1f2b184c0f in sendEvent (event=0x11180a0, receiver=0x7fff7d189600) at kernel/qcoreapplication.h:231
#33 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xf282c0) at kernel/qcoreapplication.cpp:1500
#34 0x00007f1f2b1afce3 in sendPostedEvents () at kernel/qcoreapplication.h:236
#35 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#36 0x00007f1f26709862 in g_main_dispatch (context=0xf4ec00) at gmain.c:2441
#37 g_main_context_dispatch (context=0xf4ec00) at gmain.c:3011
#38 0x00007f1f2670a040 in g_main_context_iterate (context=0xf4ec00, block=1, dispatch=1, self=<optimized out>) at gmain.c:3089
#39 0x00007f1f2670a221 in g_main_context_iteration (context=0xf4ec00, may_block=1) at gmain.c:3152
#40 0x00007f1f2b1afe6f in QEventDispatcherGlib::processEvents (this=0xf59230, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#41 0x00007f1f2a5cfc3e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#42 0x00007f1f2b180752 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#43 0x00007f1f2b180a05 in QEventLoop::exec (this=0x7fff7d189550, flags=...) at kernel/qeventloop.cpp:204
#44 0x00007f1f2b185093 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#45 0x000000000040f663 in main (argc=1, argv=0x7fff7d1897f8) at /var/tmp/portage/kde-base/kactivities-4.8.0/work/kactivities-4.8.0/service/main.cpp:37

This bug may be a duplicate of or related to bug 281955.

Possible duplicates by query: bug 293188, bug 290234, bug 289711, bug 281964.

Reported using DrKonqi