Application: kactivitymanagerd (1.0)
KDE Platform Version: 4.8.1 (4.8.1) (Compiled from sources)
Qt Version: 4.8.0
Operating System: Linux 3.2.1-gentoo-r2 x86_64
Distribution: "Gentoo Base System release 2.1"

-- Information about the crash:
every time I restart my computer, the activity manager crashes...

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 0x7f63f7d54760 (LWP 2848))]

Thread 2 (Thread 0x7f63e824b700 (LWP 2855)):
[KCrash Handler]
#6  QMutex::lock (this=0x65007200635648) at thread/qmutex.cpp:150
#7  0x00007f63f2ac76cc in QMutexLocker (m=<optimized out>, this=0x7f63e824a370) at /usr/include/qt4/QtCore/qmutex.h:102
#8  Soprano::Error::ErrorCache::clearError (this=0x1aaa520) at /var/tmp/portage/dev-libs/soprano-2.7.4/work/soprano-2.7.4/soprano/error.cpp:238
#9  0x00007f63f2ac7c18 in Soprano::Error::ErrorCache::setError (this=0x1aaa520, error=...) at /var/tmp/portage/dev-libs/soprano-2.7.4/work/soprano-2.7.4/soprano/error.cpp:225
#10 0x00007f63f285b591 in Soprano::Client::DBusModel::executeQuery (this=0x1aaa510, 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 0x00007f63f6d8b9e1 in Nepomuk::MainModel::executeQuery (this=0x1a6da30, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/core/nepomukmainmodel.cpp:212
#12 0x00007f63e8253b9c in activityResource (id=...) at /var/tmp/portage/kde-base/kactivities-4.8.1/work/kactivities-4.8.1/service/plugins/nepomuk/NepomukCommon.cpp:49
#13 0x00007f63e825a137 in RankingsUpdateThread::run (this=0x1aa2610) at /var/tmp/portage/kde-base/kactivities-4.8.1/work/kactivities-4.8.1/service/plugins/nepomuk/Rankings.cpp:104
#14 0x00007f63f6660327 in QThreadPrivate::start (arg=0x1aa2610) at thread/qthread_unix.cpp:298
#15 0x00007f63f5093ccc in start_thread (arg=0x7f63e824b700) at pthread_create.c:301
#16 0x00007f63f538307d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f63f7d54760 (LWP 2848)):
#0  0x00007f63f537ca13 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f63f678a0fa in qt_safe_select (nfds=5, fdread=0x7fff25cb4440, fdwrite=0x7fff25cb43c0, fdexcept=0x0, orig_timeout=0x7fff25cb44c0) at kernel/qcore_unix.cpp:93
#2  0x00007f63f4e1b3f9 in QNativeSocketEnginePrivate::nativeSelect (this=0x1aa9ea0, timeout=<optimized out>, checkRead=<optimized out>, checkWrite=<optimized out>, selectForRead=0x7fff25cb457f, selectForWrite=0x7fff25cb457e) at socket/qnativesocketengine_unix.cpp:1115
#3  0x00007f63f4e19578 in QNativeSocketEngine::waitForReadOrWrite (this=0x1aad330, readyToRead=0x7fff25cb457f, readyToWrite=0x7fff25cb457e, checkRead=true, checkWrite=<optimized out>, msecs=600000, timedOut=0x0) at socket/qnativesocketengine.cpp:1000
#4  0x00007f63f4e114ef in QAbstractSocket::waitForReadyRead (this=0x1ab2618, msecs=600000) at socket/qabstractsocket.cpp:1888
#5  0x00007f63f2837e64 in Soprano::Client::ClientConnection::executeQuery (this=0x1aaccc0, modelId=96958497, 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  0x00007f63f28396e5 in Soprano::Client::ClientModel::executeQuery (this=0x1aadaa0, 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  0x00007f63f6d8b9e1 in Nepomuk::MainModel::executeQuery (this=0x1a6da30, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/core/nepomukmainmodel.cpp:212
#8  0x00007f63f6da9bd6 in Nepomuk::Types::EntityPrivate::load (this=0x1abb0f0) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/types/entity.cpp:76
#9  0x00007f63f6dad940 in Nepomuk::Types::ClassPrivate::load (this=0x1abb0f0) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/types/class.cpp:54
#10 0x00007f63f6da8ad4 in Nepomuk::Types::EntityPrivate::init (this=0x1abb0f0) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/types/entity.cpp:51
#11 0x00007f63f6daefa2 in Nepomuk::Types::Class::isSubClassOf (this=0x18f9700, other=...) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/types/class.cpp:493
#12 0x00007f63f6daf000 in Nepomuk::Types::Class::isSubClassOf (this=0x7fff25cb4cd0, other=...) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/types/class.cpp:501
#13 0x00007f63f6d7e78b in Nepomuk::ResourceData::constHasType (this=0x1988a40, uri=...) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/core/resourcedata.cpp:255
#14 0x00007f63f6d81c80 in Nepomuk::ResourceData::load (this=0x1988a40) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/core/resourcedata.cpp:437
#15 0x00007f63f6d821fc in Nepomuk::ResourceData::property (this=0x1988a40, uri=...) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/core/resourcedata.cpp:265
#16 0x00007f63f6d95cc2 in Nepomuk::Resource::property (this=0x7fff25cb5140, uri=...) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/core/resource.cpp:301
#17 0x00007f63f6d95e1d in Nepomuk::Resource::symbols (this=<optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/nepomuk/core/resource.cpp:841
#18 0x0000000000407c7a in ActivityManager::ActivityIcon (this=<optimized out>, id=...) at /var/tmp/portage/kde-base/kactivities-4.8.1/work/kactivities-4.8.1/service/ActivityManager.cpp:736
#19 0x00000000004157b1 in ActivityManagerAdaptor::ActivityIcon (this=<optimized out>, id=...) at /var/tmp/portage/kde-base/kactivities-4.8.1/work/kactivities-4.8.1_build/service/activitymanageradaptor.cpp:45
#20 0x0000000000415c69 in ActivityManagerAdaptor::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /var/tmp/portage/kde-base/kactivities-4.8.1/work/kactivities-4.8.1_build/service/activitymanageradaptor.moc:186
#21 0x0000000000415f8b in ActivityManagerAdaptor::qt_metacall (this=0x1a8a890, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff25cb52a0) at /var/tmp/portage/kde-base/kactivities-4.8.1/work/kactivities-4.8.1_build/service/activitymanageradaptor.moc:255
#22 0x00007f63f6adc632 in QDBusConnectionPrivate::deliverCall (this=0x18c7f60, object=0x1a8a890, msg=..., metaTypes=..., slotIdx=12) at qdbusintegrator.cpp:947
#23 0x00007f63f6add77d in QDBusConnectionPrivate::activateCall (this=0x18c7f60, object=0x1a8a890, flags=273, msg=...) at qdbusintegrator.cpp:857
#24 0x00007f63f6addfc9 in QDBusConnectionPrivate::activateObject (this=0x18c7f60, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1423
#25 0x00007f63f6ade1db in QDBusActivateObjectEvent::placeMetaCall (this=0x1aacf40) at qdbusintegrator.cpp:1537
#26 0x00007f63f6772f7e in QObject::event (this=0x7fff25cb6260, e=<optimized out>) at kernel/qobject.cpp:1195
#27 0x00007f63f5b0b645 in QApplication::event (this=0x7fff25cb6260, e=0x1aacf40) at kernel/qapplication.cpp:2532
#28 0x00007f63f5b09014 in QApplicationPrivate::notify_helper (this=0x18d2760, receiver=0x7fff25cb6260, e=0x1aacf40) at kernel/qapplication.cpp:4550
#29 0x00007f63f5b0db7f in QApplication::notify (this=<optimized out>, receiver=0x7fff25cb6260, e=0x1aacf40) at kernel/qapplication.cpp:4411
#30 0x00007f63f726c1b6 in KApplication::notify (this=0x7fff25cb6260, receiver=0x7fff25cb6260, event=0x1aacf40) at /var/tmp/portage/kde-base/kdelibs-4.8.1/work/kdelibs-4.8.1/kdeui/kernel/kapplication.cpp:311
#31 0x00007f63f675e6e3 in QCoreApplication::notifyInternal (this=0x7fff25cb6260, receiver=0x7fff25cb6260, event=0x1aacf40) at kernel/qcoreapplication.cpp:876
#32 0x00007f63f6761c0f in sendEvent (event=0x1aacf40, receiver=0x7fff25cb6260) at kernel/qcoreapplication.h:231
#33 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x18ae2c0) at kernel/qcoreapplication.cpp:1500
#34 0x00007f63f678cce3 in sendPostedEvents () at kernel/qcoreapplication.h:236
#35 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#36 0x00007f63f1ce5862 in g_main_dispatch (context=0x18d4c40) at gmain.c:2441
#37 g_main_context_dispatch (context=0x18d4c40) at gmain.c:3011
#38 0x00007f63f1ce6040 in g_main_context_iterate (context=0x18d4c40, block=1, dispatch=1, self=<optimized out>) at gmain.c:3089
#39 0x00007f63f1ce6221 in g_main_context_iteration (context=0x18d4c40, may_block=1) at gmain.c:3152
#40 0x00007f63f678ce6f in QEventDispatcherGlib::processEvents (this=0x18df310, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#41 0x00007f63f5bacc3e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#42 0x00007f63f675d752 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#43 0x00007f63f675da05 in QEventLoop::exec (this=0x7fff25cb61b0, flags=...) at kernel/qeventloop.cpp:204
#44 0x00007f63f6762093 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#45 0x000000000040f663 in main (argc=1, argv=0x7fff25cb6458) at /var/tmp/portage/kde-base/kactivities-4.8.1/work/kactivities-4.8.1/service/main.cpp:37

This bug may be a duplicate of or related to bug 295755.

Possible duplicates by query: bug 295755, bug 294882, bug 293188, bug 290234, bug 289711.

Reported using DrKonqi