Application: korganizer (4.14.2)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 4.4.0-34-generic x86_64
Distribution: Linux Mint 17.3 Rosa

-- Information about the crash:
ticked off "Contacts" from my Google Calendar and switched to Temporal Line view and KOrganizer suddenly crashed

-- Backtrace:
Application: KOrganizer (korganizer), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fba40da5800 (LWP 2801))]

Thread 2 (Thread 0x7fba19d53700 (LWP 2976)):
#0  0x00007fba368a661a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fba368a6979 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fba3686487b in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fba36864f52 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fba368650ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fba3ea8f7be in QEventDispatcherGlib::processEvents (this=0x7fba0c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007fba3ea610af in QEventLoop::processEvents (this=this@entry=0x7fba19d52da0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fba3ea613a5 in QEventLoop::exec (this=this@entry=0x7fba19d52da0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fba3e95dc5f in QThread::exec (this=this@entry=0x2032920) at thread/qthread.cpp:537
#9  0x00007fba3ea42823 in QInotifyFileSystemWatcherEngine::run (this=0x2032920) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007fba3e96032f in QThreadPrivate::start (arg=0x2032920) at thread/qthread_unix.cpp:349
#11 0x00007fba36f35184 in start_thread (arg=0x7fba19d53700) at pthread_create.c:312
#12 0x00007fba3d44d37d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7fba40da5800 (LWP 2801)):
[KCrash Handler]
#6  0x00007fba2fb18a31 in KDGantt::ForwardingProxyModel::parent(QModelIndex const&) const () from /usr/lib/libkdgantt2.so.0
#7  0x00007fba3e34826a in parent (this=0x7fffcd8869f0) at ../../include/QtCore/../../src/corelib/kernel/qabstractitemmodel.h:393
#8  QItemSelectionModelPrivate::_q_rowsAboutToBeRemoved (this=0x368a890, parent=..., start=4, end=4) at itemviews/qitemselectionmodel.cpp:641
#9  0x00007fba3e34b8f9 in QItemSelectionModel::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=<optimized out>, _c=<optimized out>) at .moc/release-shared/moc_qitemselectionmodel.cpp:112
#10 0x00007fba3ea7687a in QMetaObject::activate (sender=sender@entry=0x33c5c90, m=m@entry=0x7fba3edc66a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=6, argv=argv@entry=0x7fffcd886b80) at kernel/qobject.cpp:3539
#11 0x00007fba3eac06b4 in QAbstractItemModel::rowsAboutToBeRemoved (this=this@entry=0x33c5c90, _t1=..., _t2=_t2@entry=4, _t3=_t3@entry=4) at .moc/release-shared/moc_qabstractitemmodel.cpp:203
#12 0x00007fba3ea58dd5 in QAbstractItemModel::beginRemoveRows (this=this@entry=0x33c5c90, parent=..., first=first@entry=4, last=last@entry=4) at kernel/qabstractitemmodel.cpp:2470
#13 0x00007fba3e37e883 in QStandardItemModelPrivate::rowsAboutToBeRemoved (this=<optimized out>, parent=parent@entry=0x34e88e0, start=start@entry=4, end=end@entry=4) at itemviews/qstandarditemmodel.cpp:535
#14 0x00007fba3e38093e in QStandardItem::takeRow (this=0x34e88e0, row=4) at itemviews/qstandarditemmodel.cpp:1743
#15 0x00007fba3e380b44 in QStandardItemModel::takeRow (this=<optimized out>, row=<optimized out>) at itemviews/qstandarditemmodel.cpp:2553
#16 0x00007fba38464fdd in ?? () from /usr/lib/libeventviews.so.4
#17 0x00007fba38467158 in EventViews::TimelineView::Private::insertIncidence(Akonadi::Item const&, QDate const&) () from /usr/lib/libeventviews.so.4
#18 0x00007fba38462c3b in EventViews::TimelineView::showDates(QDate const&, QDate const&, QDate const&) () from /usr/lib/libeventviews.so.4
#19 0x00007fba3f759922 in ?? () from /usr/lib/libkorganizerprivate.so.4
#20 0x00007fba3f4b64fc in KOrg::BaseView::setDateRange(KDateTime const&, KDateTime const&, QDate const&) () from /usr/lib/libkorganizer_interfaces.so.4
#21 0x00007fba3f746437 in ?? () from /usr/lib/libkorganizerprivate.so.4
#22 0x00007fba3f71005b in CalendarView::updateView(QDate const&, QDate const&, QDate const&, bool) () from /usr/lib/libkorganizerprivate.so.4
#23 0x00007fba3f711e3e in CalendarView::updateView() () from /usr/lib/libkorganizerprivate.so.4
#24 0x00007fba3f746fea in ?? () from /usr/lib/libkorganizerprivate.so.4
#25 0x00007fba3f74898d in ?? () from /usr/lib/libkorganizerprivate.so.4
#26 0x00007fba3f764f65 in ?? () from /usr/lib/libkorganizerprivate.so.4
#27 0x00007fba3ea7687a in QMetaObject::activate (sender=sender@entry=0x26a3480, m=m@entry=0x7fba3e8a5de0 <QAction::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7fffcd887800) at kernel/qobject.cpp:3539
#28 0x00007fba3ddf5a62 in QAction::triggered (this=this@entry=0x26a3480, _t1=false) at .moc/release-shared/moc_qaction.cpp:276
#29 0x00007fba3ddf7433 in QAction::activate (this=0x26a3480, event=<optimized out>) at kernel/qaction.cpp:1257
#30 0x00007fba3e1aeb92 in QAbstractButtonPrivate::click (this=this@entry=0x27371f0) at widgets/qabstractbutton.cpp:530
#31 0x00007fba3e1aecbc in QAbstractButton::mouseReleaseEvent (this=0x2724380, e=0x7fffcd887d00) at widgets/qabstractbutton.cpp:1123
#32 0x00007fba3e265aca in QToolButton::mouseReleaseEvent (this=<optimized out>, e=<optimized out>) at widgets/qtoolbutton.cpp:723
#33 0x00007fba3de4b51a in QWidget::event (this=0x2724380, event=0x7fffcd887d00) at kernel/qwidget.cpp:8376
#34 0x00007fba3ddfbe2c in QApplicationPrivate::notify_helper (this=this@entry=0x1eb96f0, receiver=receiver@entry=0x2724380, e=e@entry=0x7fffcd887d00) at kernel/qapplication.cpp:4567
#35 0x00007fba3de025dd in QApplication::notify (this=this@entry=0x7fffcd888650, receiver=receiver@entry=0x2724380, e=e@entry=0x7fffcd887d00) at kernel/qapplication.cpp:4110
#36 0x00007fba407dbcca in KApplication::notify (this=0x7fffcd888650, receiver=0x2724380, event=0x7fffcd887d00) at ../../kdeui/kernel/kapplication.cpp:311
#37 0x00007fba3ea624dd in QCoreApplication::notifyInternal (this=0x7fffcd888650, receiver=receiver@entry=0x2724380, event=event@entry=0x7fffcd887d00) at kernel/qcoreapplication.cpp:953
#38 0x00007fba3de01d93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#39 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x2724380, event=event@entry=0x7fffcd887d00, alienWidget=alienWidget@entry=0x2724380, nativeWidget=nativeWidget@entry=0x27340a0, buttonDown=buttonDown@entry=0x7fba3e8e1318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#40 0x00007fba3de769eb in QETWidget::translateMouseEvent (this=this@entry=0x27340a0, event=event@entry=0x7fffcd888080) at kernel/qapplication_x11.cpp:4634
#41 0x00007fba3de76289 in QApplication::x11ProcessEvent (this=0x7fffcd888650, event=event@entry=0x7fffcd888080) at kernel/qapplication_x11.cpp:3627
#42 0x00007fba3de9db32 in x11EventSourceDispatch (s=0x1eb9ce0, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#43 0x00007fba36864e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007fba36865048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007fba368650ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007fba3ea8f7be in QEventDispatcherGlib::processEvents (this=0x1e6b0c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#47 0x00007fba3de9dbe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#48 0x00007fba3ea610af in QEventLoop::processEvents (this=this@entry=0x7fffcd888450, flags=...) at kernel/qeventloop.cpp:149
#49 0x00007fba3ea613a5 in QEventLoop::exec (this=this@entry=0x7fffcd888450, flags=...) at kernel/qeventloop.cpp:204
#50 0x00007fba3ea66b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#51 0x0000000000407a9e in ?? ()
#52 0x00007fba3d374f45 in __libc_start_main (main=0x4074f0, argc=1, argv=0x7fffcd888778, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffcd888768) at libc-start.c:287
#53 0x0000000000407d64 in _start ()

Reported using DrKonqi