(In reply to comment #0)
> Application: nepomukservicestub (0.1.0)
> KDE Platform Version: 4.10.2
> Qt Version: 4.8.4
> Operating System: Linux 3.8.0-19-generic x86_64
> Distribution: Ubuntu 13.04
> 
> -- Information about the crash:
> - What I was doing when the application crashed:
>This is the case when not using the system for a while.
>After restarting the process virtuoso-t can consume 100% of one CPU.
> 
> The crash can be reproduced sometimes.
> 
> -- Backtrace:
> Application: Заглушка службы Nepomuk (nepomukservicestub), signal:
> Segmentation fault
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
> [Current thread is 1 (Thread 0x7f9f7b2a47c0 (LWP 2401))]
> 
> Thread 9 (Thread 0x7f9f62867700 (LWP 2526)):
> #0  0x00007f9f788db3cd in poll () from /lib/x86_64-linux-gnu/libc.so.6
> #1  0x00007f9f77f031dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #2  0x00007f9f77f03304 in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #3  0x00007f9f7ad8c036 in QEventDispatcherGlib::processEvents
> (this=0x7f9f540008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
> #4  0x00007f9f7ad5c38f in QEventLoop::processEvents
> (this=this@entry=0x7f9f62866d70, flags=...) at kernel/qeventloop.cpp:149
> #5  0x00007f9f7ad5c618 in QEventLoop::exec (this=this@entry=0x7f9f62866d70,
> flags=...) at kernel/qeventloop.cpp:204
> #6  0x00007f9f7ac5e410 in QThread::exec (this=<optimized out>) at
> thread/qthread.cpp:542
> #7  0x00007f9f69cc8efe in ?? () from /usr/lib/libsopranoserver.so.1
> #8  0x00007f9f7ac60bec in QThreadPrivate::start (arg=0x1b47240) at
> thread/qthread_unix.cpp:338
> #9  0x00007f9f785d8f8e in start_thread () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #10 0x00007f9f788e7e1d in clone () from /lib/x86_64-linux-gnu/libc.so.6
> 
> Thread 8 (Thread 0x7f9f61865700 (LWP 2528)):
> #0  0x00007f9f788db3cd in poll () from /lib/x86_64-linux-gnu/libc.so.6
> #1  0x00007f9f77f031dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #2  0x00007f9f77f03304 in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #3  0x00007f9f7ad8c036 in QEventDispatcherGlib::processEvents
> (this=0x7f9f4c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
> #4  0x00007f9f7ad5c38f in QEventLoop::processEvents
> (this=this@entry=0x7f9f61864d70, flags=...) at kernel/qeventloop.cpp:149
> #5  0x00007f9f7ad5c618 in QEventLoop::exec (this=this@entry=0x7f9f61864d70,
> flags=...) at kernel/qeventloop.cpp:204
> #6  0x00007f9f7ac5e410 in QThread::exec (this=<optimized out>) at
> thread/qthread.cpp:542
> #7  0x00007f9f69cc8efe in ?? () from /usr/lib/libsopranoserver.so.1
> #8  0x00007f9f7ac60bec in QThreadPrivate::start (arg=0x1b472a0) at
> thread/qthread_unix.cpp:338
> #9  0x00007f9f785d8f8e in start_thread () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #10 0x00007f9f788e7e1d in clone () from /lib/x86_64-linux-gnu/libc.so.6
> 
> Thread 7 (Thread 0x7f9f62066700 (LWP 2534)):
> #0  0x00007f9f785dc05b in __pthread_mutex_unlock_usercnt () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #1  0x00007f9f77f425f1 in g_mutex_unlock () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #2  0x00007f9f77f02c61 in g_main_context_check () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #3  0x00007f9f77f03175 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #4  0x00007f9f77f03304 in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #5  0x00007f9f7ad8c036 in QEventDispatcherGlib::processEvents
> (this=0x7f9f58003480, flags=...) at kernel/qeventdispatcher_glib.cpp:426
> #6  0x00007f9f7ad5c38f in QEventLoop::processEvents
> (this=this@entry=0x7f9f62065d70, flags=...) at kernel/qeventloop.cpp:149
> #7  0x00007f9f7ad5c618 in QEventLoop::exec (this=this@entry=0x7f9f62065d70,
> flags=...) at kernel/qeventloop.cpp:204
> #8  0x00007f9f7ac5e410 in QThread::exec (this=<optimized out>) at
> thread/qthread.cpp:542
> #9  0x00007f9f69cc8efe in ?? () from /usr/lib/libsopranoserver.so.1
> #10 0x00007f9f7ac60bec in QThreadPrivate::start (arg=0x1b473f0) at
> thread/qthread_unix.cpp:338
> #11 0x00007f9f785d8f8e in start_thread () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #12 0x00007f9f788e7e1d in clone () from /lib/x86_64-linux-gnu/libc.so.6
> 
> Thread 6 (Thread 0x7f9f61064700 (LWP 2536)):
> #0  0x00007f9f785dc07f in __pthread_mutex_unlock_usercnt () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #1  0x00007f9f77f425f1 in g_mutex_unlock () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #2  0x00007f9f77f02df9 in g_main_context_dispatch () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #3  0x00007f9f77f03248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #4  0x00007f9f77f03304 in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #5  0x00007f9f7ad8c036 in QEventDispatcherGlib::processEvents
> (this=0x7f9f500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
> #6  0x00007f9f7ad5c38f in QEventLoop::processEvents
> (this=this@entry=0x7f9f61063d70, flags=...) at kernel/qeventloop.cpp:149
> #7  0x00007f9f7ad5c618 in QEventLoop::exec (this=this@entry=0x7f9f61063d70,
> flags=...) at kernel/qeventloop.cpp:204
> #8  0x00007f9f7ac5e410 in QThread::exec (this=<optimized out>) at
> thread/qthread.cpp:542
> #9  0x00007f9f69cc8efe in ?? () from /usr/lib/libsopranoserver.so.1
> #10 0x00007f9f7ac60bec in QThreadPrivate::start (arg=0x1867bb0) at
> thread/qthread_unix.cpp:338
> #11 0x00007f9f785d8f8e in start_thread () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #12 0x00007f9f788e7e1d in clone () from /lib/x86_64-linux-gnu/libc.so.6
> 
> Thread 5 (Thread 0x7f9f4aa30700 (LWP 3483)):
> #0  0x00007f9f77f42359 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #1  0x00007f9f77f425e9 in g_mutex_unlock () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #2  0x00007f9f77f028f3 in g_main_context_prepare () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #3  0x00007f9f77f030fe in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #4  0x00007f9f77f03304 in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #5  0x00007f9f7ad8c036 in QEventDispatcherGlib::processEvents
> (this=0x7f9f3c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
> #6  0x00007f9f7ad5c38f in QEventLoop::processEvents
> (this=this@entry=0x7f9f4aa2fd70, flags=...) at kernel/qeventloop.cpp:149
> #7  0x00007f9f7ad5c618 in QEventLoop::exec (this=this@entry=0x7f9f4aa2fd70,
> flags=...) at kernel/qeventloop.cpp:204
> #8  0x00007f9f7ac5e410 in QThread::exec (this=<optimized out>) at
> thread/qthread.cpp:542
> #9  0x00007f9f69cc8efe in ?? () from /usr/lib/libsopranoserver.so.1
> #10 0x00007f9f7ac60bec in QThreadPrivate::start (arg=0x1b653a0) at
> thread/qthread_unix.cpp:338
> #11 0x00007f9f785d8f8e in start_thread () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #12 0x00007f9f788e7e1d in clone () from /lib/x86_64-linux-gnu/libc.so.6
> 
> Thread 4 (Thread 0x7f9f4a22f700 (LWP 3541)):
> #0  0x00007fffb6bfe701 in ?? ()
> #1  0x00007f9f4a22ea80 in ?? ()
> #2  0x00007fffb6bfeac9 in ?? ()
> #3  0x00007f9f4a22ead0 in ?? ()
> #4  0x0000000100000050 in ?? ()
> #5  0x00007f9f30004940 in ?? ()
> #6  0x00007f9f4a22eb60 in ?? ()
> #7  0x00007f9f4a22ec18 in ?? ()
> #8  0x0000000000000000 in ?? ()
> 
> Thread 3 (Thread 0x7f9f49a2e700 (LWP 3605)):
> #0  0x00007f9f785dc08b in __pthread_mutex_unlock_usercnt () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #1  0x00007f9f77f425f1 in g_mutex_unlock () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #2  0x00007f9f77f03188 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #3  0x00007f9f77f03304 in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #4  0x00007f9f7ad8c036 in QEventDispatcherGlib::processEvents
> (this=0x7f9f340033d0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
> #5  0x00007f9f7ad5c38f in QEventLoop::processEvents
> (this=this@entry=0x7f9f49a2dd70, flags=...) at kernel/qeventloop.cpp:149
> #6  0x00007f9f7ad5c618 in QEventLoop::exec (this=this@entry=0x7f9f49a2dd70,
> flags=...) at kernel/qeventloop.cpp:204
> #7  0x00007f9f7ac5e410 in QThread::exec (this=<optimized out>) at
> thread/qthread.cpp:542
> #8  0x00007f9f69cc8efe in ?? () from /usr/lib/libsopranoserver.so.1
> #9  0x00007f9f7ac60bec in QThreadPrivate::start (arg=0x1b5f9e0) at
> thread/qthread_unix.cpp:338
> #10 0x00007f9f785d8f8e in start_thread () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #11 0x00007f9f788e7e1d in clone () from /lib/x86_64-linux-gnu/libc.so.6
> 
> Thread 2 (Thread 0x7f9f4922d700 (LWP 3693)):
> [KCrash Handler]
> #5  0x00000000017fa4c0 in ?? ()
> #6  0x00007f9f7546230e in Soprano::FilterModel::executeQuery(QString const&,
> Soprano::Query::QueryLanguage, QString const&) const () from
> /usr/lib/libsoprano.so.4
> #7  0x00007f9f69f4d298 in Nepomuk2::VirtuosoInferenceModel::executeQuery
> (this=0x168c550, query=..., language=<optimized out>, userQueryLanguage=...)
> at ../../../services/storage/virtuosoinferencemodel.cpp:61
> #8  0x00007f9f754622f7 in Soprano::FilterModel::executeQuery(QString const&,
> Soprano::Query::QueryLanguage, QString const&) const () from
> /usr/lib/libsoprano.so.4
> #9  0x00007f9f754622f7 in Soprano::FilterModel::executeQuery(QString const&,
> Soprano::Query::QueryLanguage, QString const&) const () from
> /usr/lib/libsoprano.so.4
> #10 0x00007f9f69cc8cc5 in ?? () from /usr/lib/libsopranoserver.so.1
> #11 0x00007f9f69cca08d in ?? () from /usr/lib/libsopranoserver.so.1
> #12 0x00007f9f7ad720ef in QMetaObject::activate (sender=0x7f9f28016ec0,
> m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at
> kernel/qobject.cpp:3539
> #13 0x00007f9f7ad720ef in QMetaObject::activate
> (sender=sender@entry=0x7f9f28002168, m=m@entry=0x7f9f7b0b7480
> <QIODevice::staticMetaObject>,
> local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at
> kernel/qobject.cpp:3539
> #14 0x00007f9f7adbc090 in QIODevice::readyRead
> (this=this@entry=0x7f9f28002168) at .moc/release-shared/moc_qiodevice.cpp:105
> #15 0x00007f9f770932ac in QAbstractSocketPrivate::canReadNotification
> (this=0x7f9f28000940) at socket/qabstractsocket.cpp:654
> #16 0x00007f9f7709de2d in event (this=<optimized out>, e=<optimized out>) at
> socket/qnativesocketengine.cpp:1151
> #17 QReadNotifier::event (this=<optimized out>, e=<optimized out>) at
> socket/qnativesocketengine.cpp:1148
> #18 0x00007f9f790848ec in QApplicationPrivate::notify_helper
> (this=this@entry=0x15f3830, receiver=receiver@entry=0x7f9f28001310,
> e=e@entry=0x7f9f4922cb50) at kernel/qapplication.cpp:4567
> #19 0x00007f9f7908725b in QApplication::notify (this=0x7fffb6b5ca50,
> receiver=0x7f9f28001310, e=0x7f9f4922cb50) at kernel/qapplication.cpp:4428
> #20 0x00007f9f7a08faf6 in KApplication::notify(QObject*, QEvent*) () from
> /usr/lib/libkdeui.so.5
> #21 0x00007f9f7ad5d63e in QCoreApplication::notifyInternal
> (this=0x7fffb6b5ca50, receiver=0x7f9f28001310,
> event=event@entry=0x7f9f4922cb50) at kernel/qcoreapplication.cpp:946
> #22 0x00007f9f7ad8c5c8 in sendEvent (event=0x7f9f4922cb50,
> receiver=<optimized out>) at
> ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
> #23 socketNotifierSourceDispatch (source=0x7f9f28002390) at
> kernel/qeventdispatcher_glib.cpp:110
> #24 0x00007f9f77f02f05 in g_main_context_dispatch () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #25 0x00007f9f77f03248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #26 0x00007f9f77f03304 in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #27 0x00007f9f7ad8c036 in QEventDispatcherGlib::processEvents
> (this=0x7f9f28001270, flags=...) at kernel/qeventdispatcher_glib.cpp:426
> #28 0x00007f9f7ad5c38f in QEventLoop::processEvents
> (this=this@entry=0x7f9f4922cd70, flags=...) at kernel/qeventloop.cpp:149
> #29 0x00007f9f7ad5c618 in QEventLoop::exec (this=this@entry=0x7f9f4922cd70,
> flags=...) at kernel/qeventloop.cpp:204
> #30 0x00007f9f7ac5e410 in QThread::exec (this=<optimized out>) at
> thread/qthread.cpp:542
> #31 0x00007f9f69cc8efe in ?? () from /usr/lib/libsopranoserver.so.1
> #32 0x00007f9f7ac60bec in QThreadPrivate::start (arg=0x1b647e0) at
> thread/qthread_unix.cpp:338
> #33 0x00007f9f785d8f8e in start_thread () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #34 0x00007f9f788e7e1d in clone () from /lib/x86_64-linux-gnu/libc.so.6
> 
> Thread 1 (Thread 0x7f9f7b2a47c0 (LWP 2401)):
> #0  0x00007f9f788e0233 in select () from /lib/x86_64-linux-gnu/libc.so.6
> #1  0x00007f9f7ad893ca in qt_safe_select (nfds=13, fdread=0x7fffb6b5b910,
> fdwrite=0x7fffb6b5b990, fdexcept=fdexcept@entry=0x0,
> orig_timeout=orig_timeout@entry=0x7fffb6b5b8c0) at kernel/qcore_unix.cpp:93
> #2  0x00007f9f7ad37bbc in select_msecs (nfds=<optimized out>,
> fdread=<optimized out>, fdwrite=<optimized out>, timeout=<optimized out>) at
> io/qprocess_unix.cpp:1011
> #3  0x00007f9f7ad393f4 in QProcessPrivate::waitForFinished
> (this=this@entry=0x17ff1e0, msecs=msecs@entry=29994) at
> io/qprocess_unix.cpp:1227
> #4  0x00007f9f7acf2f6e in QProcess::waitForFinished (this=0x7fffb6b5bb00,
> msecs=29994) at io/qprocess.cpp:1759
> #5  0x00007f9f63a03ced in ?? () from
> /usr/lib/soprano/libsoprano_virtuosobackend.so
> #6  0x00007f9f63a04120 in ?? () from
> /usr/lib/soprano/libsoprano_virtuosobackend.so
> #7  0x00007f9f69efee0f in Nepomuk2::Repository::open (this=0x17a1c20) at
> ../../../services/storage/repository.cpp:136
> #8  0x00007f9f69f0072f in Nepomuk2::Repository::slotVirtuosoStopped
> (this=0x17a1c20, normalExit=16) at
> ../../../services/storage/repository.cpp:439
> #9  0x00007f9f7ad720ef in QMetaObject::activate (sender=0x1832130,
> m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffb6b5bf30)
> at kernel/qobject.cpp:3539
> #10 0x00007f9f63a0160f in ?? () from
> /usr/lib/soprano/libsoprano_virtuosobackend.so
> #11 0x00007f9f7ad775be in QObject::event (this=0x1832130, e=<optimized out>)
> at kernel/qobject.cpp:1194
> #12 0x00007f9f790848ec in QApplicationPrivate::notify_helper
> (this=this@entry=0x15f3830, receiver=receiver@entry=0x1832130,
> e=e@entry=0x15f2a60) at kernel/qapplication.cpp:4567
> #13 0x00007f9f7908725b in QApplication::notify (this=0x7fffb6b5ca50,
> receiver=0x1832130, e=0x15f2a60) at kernel/qapplication.cpp:4428
> #14 0x00007f9f7a08faf6 in KApplication::notify(QObject*, QEvent*) () from
> /usr/lib/libkdeui.so.5
> #15 0x00007f9f7ad5d63e in QCoreApplication::notifyInternal
> (this=0x7fffb6b5ca50, receiver=receiver@entry=0x1832130,
> event=event@entry=0x15f2a60) at kernel/qcoreapplication.cpp:946
> #16 0x00007f9f7ad61171 in sendEvent (event=0x15f2a60, receiver=0x1832130) at
> ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
> #17 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0,
> event_type=event_type@entry=0, data=0x15c8190) at
> kernel/qcoreapplication.cpp:1570
> #18 0x00007f9f7ad614a3 in QCoreApplication::sendPostedEvents
> (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at
> kernel/qcoreapplication.cpp:1463
> #19 0x00007f9f7ad8be83 in sendPostedEvents () at
> ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
> #20 postEventSourceDispatch (s=0x15e4a50) at
> kernel/qeventdispatcher_glib.cpp:279
> #21 0x00007f9f77f02f05 in g_main_context_dispatch () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #22 0x00007f9f77f03248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #23 0x00007f9f77f03304 in g_main_context_iteration () from
> /lib/x86_64-linux-gnu/libglib-2.0.so.0
> #24 0x00007f9f7ad8c016 in QEventDispatcherGlib::processEvents
> (this=0x15f1aa0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
> #25 0x00007f9f7912a1ae in QGuiEventDispatcherGlib::processEvents
> (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
> #26 0x00007f9f7ad5c38f in QEventLoop::processEvents
> (this=this@entry=0x7fffb6b5c830, flags=...) at kernel/qeventloop.cpp:149
> #27 0x00007f9f7ad5c618 in QEventLoop::exec (this=this@entry=0x7fffb6b5c830,
> flags=...) at kernel/qeventloop.cpp:204
> #28 0x00007f9f7ad61cf6 in QCoreApplication::exec () at
> kernel/qcoreapplication.cpp:1218
> #29 0x00007f9f79082ffc in QApplication::exec () at
> kernel/qapplication.cpp:3828
> #30 0x0000000000403e70 in main (argc=<optimized out>, argv=0x7fffb6b5cc98)
> at ../../servicestub/main.cpp:180
> 
> This bug may be a duplicate of or related to bug 318879.
> 
> Possible duplicates by query: bug 319361, bug 318879.
> 
> Reported using DrKonqi

*** This bug has been marked as a duplicate of bug 320123 ***