Application: kontact (4.14.6)
KDE Platform Version: 4.14.6
Qt Version: 4.8.6
Operating System: Linux 3.19.0-16-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:
plasmashell crashed -> rebooted manually -> logged in -> kontact was loaded twice -> i closed one instance -> the other crashed as well.
- Unusual behavior I noticed:
kde5 has lots of issues.
ubuntu 15.04

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f25b84b5840 (LWP 2890))]

Thread 5 (Thread 0x7f2597022700 (LWP 2897)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f25b315681d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f25b3156859 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f25af8546aa in start_thread (arg=0x7f2597022700) at pthread_create.c:333
#4  0x00007f25b5994eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f2556707700 (LWP 2900)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f25b2e9720d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f25b3185fd6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f25af8546aa in start_thread (arg=0x7f2556707700) at pthread_create.c:333
#4  0x00007f25b5994eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f254290e700 (LWP 3841)):
#0  0x00007f25af3b37a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f25af36eeb1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f25af36efcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f25b611d82e in QEventDispatcherGlib::processEvents (this=0x7f253c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#4  0x00007f25b60eccd1 in QEventLoop::processEvents (this=this@entry=0x7f254290dd90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f25b60ed035 in QEventLoop::exec (this=this@entry=0x7f254290dd90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f25b5fe0e89 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:538
#7  0x00007f25b5fe36ff in QThreadPrivate::start (arg=0x25f7c10) at thread/qthread_unix.cpp:349
#8  0x00007f25af8546aa in start_thread (arg=0x7f254290e700) at pthread_create.c:333
#9  0x00007f25b5994eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2539510700 (LWP 4472)):
#0  0x00007f25b611d201 in testAndSetOrdered (newValue=1, expectedValue=0, this=0x59446b0) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:145
#1  testAndSetAcquire (newValue=1, expectedValue=0, this=0x59446b0) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86_64.h:267
#2  tryLockInline (this=0x5944668) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:181
#3  lockInline (this=0x5944668) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:189
#4  QMutexLocker (m=0x5944668, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:109
#5  canWaitLocked (this=0x5944620) at ../../include/QtCore/private/../../../src/corelib/thread/qthread_p.h:228
#6  postEventSourcePrepare (s=0x7f25300012e0, timeout=0x7f253950fb34) at kernel/qeventdispatcher_glib.cpp:279
#7  0x00007f25af36e8c1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f25af36ee60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f25af36efcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f25b611d82e in QEventDispatcherGlib::processEvents (this=0x7f25300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#11 0x00007f25b60eccd1 in QEventLoop::processEvents (this=this@entry=0x7f253950fd40, flags=...) at kernel/qeventloop.cpp:149
#12 0x00007f25b60ed035 in QEventLoop::exec (this=this@entry=0x7f253950fd40, flags=...) at kernel/qeventloop.cpp:204
#13 0x00007f25b5fe0e89 in QThread::exec (this=this@entry=0x59444e0) at thread/qthread.cpp:538
#14 0x00007f25b60cd443 in QInotifyFileSystemWatcherEngine::run (this=0x59444e0) at io/qfilesystemwatcher_inotify.cpp:265
#15 0x00007f25b5fe36ff in QThreadPrivate::start (arg=0x59444e0) at thread/qthread_unix.cpp:349
#16 0x00007f25af8546aa in start_thread (arg=0x7f2539510700) at pthread_create.c:333
#17 0x00007f25b5994eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f25b84b5840 (LWP 2890)):
[KCrash Handler]
#6  0x00007f25b48e2151 in Akonadi::EntityTreeModel::modelIndexForCollection (model=<optimized out>, collection=...) at ../../akonadi/entitytreemodel.cpp:1240
#7  0x00007f25b4905837 in labelForCollection (collectionId=<optimized out>, this=0x360eb90) at ../../akonadi/favoritecollectionsmodel.cpp:55
#8  Akonadi::FavoriteCollectionsModel::data (this=<optimized out>, index=..., role=<optimized out>) at ../../akonadi/favoritecollectionsmodel.cpp:338
#9  0x00007f25b70d1360 in data (arole=0, this=0x7ffe37157ef0) at ../../include/QtCore/../../src/corelib/kernel/qabstractitemmodel.h:402
#10 QStyledItemDelegate::initStyleOption (this=0x3606af0, option=option@entry=0x7ffe37157d20, index=...) at itemviews/qstyleditemdelegate.cpp:385
#11 0x00007f25b48bad92 in Akonadi::CollectionStatisticsDelegate::initStyleOption (this=<optimized out>, option=0x7ffe37157d20, index=...) at ../../akonadi/collectionstatisticsdelegate.cpp:157
#12 0x00007f25b70d0d6a in QStyledItemDelegate::sizeHint (this=0x3606af0, option=..., index=...) at itemviews/qstyleditemdelegate.cpp:450
#13 0x00007f25b704722d in QListViewPrivate::itemSize (this=0x35fd3c0, option=..., index=...) at itemviews/qlistview.cpp:1788
#14 0x00007f25b704c5e5 in itemSize (this=0x3601e10, idx=..., opt=...) at ../../include/QtGui/private/../../../src/gui/itemviews/qlistview_p.h:475
#15 QListModeViewBase::doStaticLayout (this=this@entry=0x3601e10, info=...) at itemviews/qlistview.cpp:2404
#16 0x00007f25b704c840 in QListModeViewBase::doBatchedItemLayout (this=0x3601e10, info=..., max=4) at itemviews/qlistview.cpp:2276
#17 0x00007f25b7046ea9 in QListViewPrivate::doItemsLayout (this=this@entry=0x35fd3c0, delta=<optimized out>) at itemviews/qlistview.cpp:1725
#18 0x00007f25b7053aeb in QListView::doItemsLayout (this=0x35fcde0) at itemviews/qlistview.cpp:1467
#19 0x00007f25b7031e5a in executePostedLayout (this=0x35fd3c0) at ../../include/QtGui/private/../../../src/gui/itemviews/qabstractitemview_p.h:212
#20 QAbstractItemView::event (this=0x35fcde0, event=0x7ffe371583b0) at itemviews/qabstractitemview.cpp:1548
#21 0x00007f25b6afa9bc in QApplicationPrivate::notify_helper (this=this@entry=0x240c2a0, receiver=receiver@entry=0x35fcde0, e=e@entry=0x7ffe371583b0) at kernel/qapplication.cpp:4570
#22 0x00007f25b6b014d8 in QApplication::notify (this=this@entry=0x7ffe37159f10, receiver=receiver@entry=0x35fcde0, e=e@entry=0x7ffe371583b0) at kernel/qapplication.cpp:4356
#23 0x00007f25b785cb4a in KApplication::notify (this=0x7ffe37159f10, receiver=0x35fcde0, event=0x7ffe371583b0) at ../../kdeui/kernel/kapplication.cpp:311
#24 0x00007f25b60ee17d in QCoreApplication::notifyInternal (this=0x7ffe37159f10, receiver=receiver@entry=0x35fcde0, event=event@entry=0x7ffe371583b0) at kernel/qcoreapplication.cpp:955
#25 0x00007f25b6b4b234 in sendEvent (event=0x7ffe371583b0, receiver=0x35fcde0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#26 QWidgetPrivate::show_helper (this=this@entry=0x35fd3c0) at kernel/qwidget.cpp:7569
#27 0x00007f25b6b4d15a in QWidget::setVisible (this=0x35fcde0, visible=<optimized out>) at kernel/qwidget.cpp:7791
#28 0x00007f25b6b4b06e in show (this=0x35fcde0) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#29 QWidgetPrivate::showChildren (this=this@entry=0x36716a0, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7879
#30 0x00007f25b6b4b11f in QWidgetPrivate::show_helper (this=this@entry=0x36716a0) at kernel/qwidget.cpp:7516
#31 0x00007f25b6b4d15a in QWidget::setVisible (this=0x3670130, visible=<optimized out>) at kernel/qwidget.cpp:7791
#32 0x00007f25b6b4b06e in show (this=0x3670130) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#33 QWidgetPrivate::showChildren (this=this@entry=0x3670e30, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7879
#34 0x00007f25b6b4b11f in QWidgetPrivate::show_helper (this=this@entry=0x3670e30) at kernel/qwidget.cpp:7516
#35 0x00007f25b6b4d15a in QWidget::setVisible (this=0x33c0270, visible=<optimized out>) at kernel/qwidget.cpp:7791
#36 0x00007f25b6b4b06e in show (this=0x33c0270) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#37 QWidgetPrivate::showChildren (this=this@entry=0x2fe93d0, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7879
#38 0x00007f25b6b4b11f in QWidgetPrivate::show_helper (this=this@entry=0x2fe93d0) at kernel/qwidget.cpp:7516
#39 0x00007f25b6b4d15a in QWidget::setVisible (this=0x3373170, visible=<optimized out>) at kernel/qwidget.cpp:7791
#40 0x00007f25b6b4b06e in show (this=0x3373170) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#41 QWidgetPrivate::showChildren (this=this@entry=0x33c6d00, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7879
#42 0x00007f25b6b4b11f in QWidgetPrivate::show_helper (this=this@entry=0x33c6d00) at kernel/qwidget.cpp:7516
#43 0x00007f25b6b4d15a in QWidget::setVisible (this=0x2a56690, visible=<optimized out>) at kernel/qwidget.cpp:7791
#44 0x00007f25b6b2f676 in show (this=0x2a56690) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:497
#45 QStackedLayout::setCurrentIndex (this=0x334c350, index=1) at kernel/qstackedlayout.cpp:313
#46 0x00007f25b6b2f7fa in QStackedLayout::setCurrentWidget (this=<optimized out>, widget=widget@entry=0x2a56690) at kernel/qstackedlayout.cpp:368
#47 0x00007f25b6f6fe27 in QStackedWidget::setCurrentWidget (this=<optimized out>, widget=widget@entry=0x2a56690) at widgets/qstackedwidget.cpp:295
#48 0x00007f25b7cbca96 in Kontact::MainWindow::selectPlugin (this=0x23e0da0, plugin=0x3375570) at ../../../kontact/src/mainwindow.cpp:859
#49 0x00007f25b610319c in QMetaObject::activate (sender=0x3335730, m=m@entry=0x7f25b7ed1be0 <Kontact::SidePaneBase::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe37158bd0) at kernel/qobject.cpp:3567
#50 0x00007f25b7cc8712 in pluginSelected (_t1=0x3375570, this=<optimized out>) at moc_sidepanebase.cpp:103
#51 Kontact::SidePaneBase::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at moc_sidepanebase.cpp:53
#52 0x00007f25b610319c in QMetaObject::activate (sender=sender@entry=0x3336600, m=m@entry=0x7f25b7ed1c40 <Kontact::Navigator::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe37158d10) at kernel/qobject.cpp:3567
#53 0x00007f25b7cc879f in Kontact::Navigator::pluginActivated (this=this@entry=0x3336600, _t1=0x3375570) at moc_iconsidepane.cpp:109
#54 0x00007f25b7cc2660 in Kontact::Navigator::slotCurrentChanged (this=0x3336600, current=...) at ../../../kontact/src/iconsidepane.cpp:477
#55 0x00007f25b7cc8659 in Kontact::Navigator::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at moc_iconsidepane.cpp:58
#56 0x00007f25b610319c in QMetaObject::activate (sender=sender@entry=0x2c352c0, m=m@entry=0x7f25b760b160 <QItemSelectionModel::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffe37158ec0) at kernel/qobject.cpp:3567
#57 0x00007f25b707e55a in QItemSelectionModel::currentChanged (this=this@entry=0x2c352c0, _t1=..., _t2=...) at .moc/release-shared/moc_qitemselectionmodel.cpp:172
#58 0x00007f25b707e6cf in QItemSelectionModel::setCurrentIndex (this=0x2c352c0, index=..., command=...) at itemviews/qitemselectionmodel.cpp:1175
#59 0x00007f25b702bfdc in QAbstractItemView::mousePressEvent (this=0x3336600, event=<optimized out>) at itemviews/qabstractitemview.cpp:1682
#60 0x00007f25b6b4e947 in QWidget::event (this=0x3336600, event=0x7ffe371596e0) at kernel/qwidget.cpp:8385
#61 0x00007f25b6f1460e in QFrame::event (this=0x3336600, e=0x7ffe371596e0) at widgets/qframe.cpp:557
#62 0x00007f25b7032163 in QAbstractItemView::viewportEvent (this=0x3336600, event=0x7ffe371596e0) at itemviews/qabstractitemview.cpp:1644
#63 0x00007f25b60ee2e6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x240c2a0, receiver=receiver@entry=0x3343310, event=event@entry=0x7ffe371596e0) at kernel/qcoreapplication.cpp:1065
#64 0x00007f25b6afa99c in QApplicationPrivate::notify_helper (this=this@entry=0x240c2a0, receiver=receiver@entry=0x3343310, e=e@entry=0x7ffe371596e0) at kernel/qapplication.cpp:4566
#65 0x00007f25b6b0163f in QApplication::notify (this=this@entry=0x7ffe37159f10, receiver=receiver@entry=0x3343310, e=e@entry=0x7ffe371596e0) at kernel/qapplication.cpp:4113
#66 0x00007f25b785cb4a in KApplication::notify (this=0x7ffe37159f10, receiver=0x3343310, event=0x7ffe371596e0) at ../../kdeui/kernel/kapplication.cpp:311
#67 0x00007f25b60ee17d in QCoreApplication::notifyInternal (this=0x7ffe37159f10, receiver=receiver@entry=0x3343310, event=event@entry=0x7ffe371596e0) at kernel/qcoreapplication.cpp:955
#68 0x00007f25b6b00c9f in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#69 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x3343310, event=event@entry=0x7ffe371596e0, alienWidget=alienWidget@entry=0x3343310, nativeWidget=nativeWidget@entry=0x23e0da0, buttonDown=buttonDown@entry=0x7f25b7628578 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3178
#70 0x00007f25b6b7a9a2 in QETWidget::translateMouseEvent (this=this@entry=0x23e0da0, event=event@entry=0x7ffe37159a40) at kernel/qapplication_x11.cpp:4632
#71 0x00007f25b6b7a24c in QApplication::x11ProcessEvent (this=0x7ffe37159f10, event=event@entry=0x7ffe37159a40) at kernel/qapplication_x11.cpp:3626
#72 0x00007f25b6ba2ba2 in x11EventSourceDispatch (s=0x2400ca0, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#73 0x00007f25af36ec3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#74 0x00007f25af36ef20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#75 0x00007f25af36efcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#76 0x00007f25b611d80e in QEventDispatcherGlib::processEvents (this=0x235c1b0, flags=...) at kernel/qeventdispatcher_glib.cpp:450
#77 0x00007f25b6ba2c66 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#78 0x00007f25b60eccd1 in QEventLoop::processEvents (this=this@entry=0x7ffe37159e20, flags=...) at kernel/qeventloop.cpp:149
#79 0x00007f25b60ed035 in QEventLoop::exec (this=this@entry=0x7ffe37159e20, flags=...) at kernel/qeventloop.cpp:204
#80 0x00007f25b60f2ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1227
#81 0x00007f25b6af8c1c in QApplication::exec () at kernel/qapplication.cpp:3828
#82 0x0000000000403509 in main (argc=3, argv=0x7ffe3715a068) at ../../../kontact/src/main.cpp:219

Reported using DrKonqi