Bug 398655

Application: systemsettings5 (5.14.80)

Qt Version: 5.11.1
Frameworks Version: 5.51.0
Operating System: Linux 4.15.0-34-generic x86_64
Distribution: KDE neon Developer Edition

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

Multiple System Settings modules windows were opened, Breeze Dark Look and Feel theme was activated

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6523e5d840 (LWP 3128))]

Thread 6 (Thread 0x7f64ddef3700 (LWP 3228)):
#0  0x00007f65187f7d14 in g_mutex_unlock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f65187b1fd9 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f65187b24c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f65187b254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f651fd99a9b in QEventDispatcherGlib::processEvents (this=0x7f64d406d660, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f651fd3ddea in QEventLoop::exec (this=this@entry=0x7f64ddef2d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007f651fb68b8a in QThread::exec (this=this@entry=0x55975e2554e0) at thread/qthread.cpp:525
#7  0x00007f651d8688b5 in QQmlThreadPrivate::run (this=0x55975e2554e0) at qml/ftw/qqmlthread.cpp:148
#8  0x00007f651fb73aab in QThreadPrivate::start (arg=0x55975e2554e0) at thread/qthread_unix.cpp:367
#9  0x00007f651ab706db in start_thread (arg=0x7f64ddef3700) at pthread_create.c:463
#10 0x00007f651f46688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f64ef7dc700 (LWP 3135)):
#0  0x00007f651f459bf9 in __GI___poll (fds=0x7f64e8003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f65187b2439 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f65187b254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f651fd99a9b in QEventDispatcherGlib::processEvents (this=0x7f64e8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f651fd3ddea in QEventLoop::exec (this=this@entry=0x7f64ef7dbd40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f651fb68b8a in QThread::exec (this=this@entry=0x559759c2aa90) at thread/qthread.cpp:525
#6  0x00007f651d8688b5 in QQmlThreadPrivate::run (this=0x559759c2aa90) at qml/ftw/qqmlthread.cpp:148
#7  0x00007f651fb73aab in QThreadPrivate::start (arg=0x559759c2aa90) at thread/qthread_unix.cpp:367
#8  0x00007f651ab706db in start_thread (arg=0x7f64ef7dc700) at pthread_create.c:463
#9  0x00007f651f46688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f64fa852700 (LWP 3133)):
#0  0x00007f651f4550b4 in __GI___libc_read (fd=10, buf=0x7f64fa851b30, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f65187f6980 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f65187b1f27 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f65187b23e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f65187b254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f651fd99a9b in QEventDispatcherGlib::processEvents (this=0x7f64f4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f651fd3ddea in QEventLoop::exec (this=this@entry=0x7f64fa851d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#7  0x00007f651fb68b8a in QThread::exec (this=this@entry=0x5597538ceaf0) at thread/qthread.cpp:525
#8  0x00007f651d8688b5 in QQmlThreadPrivate::run (this=0x5597538ceaf0) at qml/ftw/qqmlthread.cpp:148
#9  0x00007f651fb73aab in QThreadPrivate::start (arg=0x5597538ceaf0) at thread/qthread_unix.cpp:367
#10 0x00007f651ab706db in start_thread (arg=0x7f64fa852700) at pthread_create.c:463
#11 0x00007f651f46688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f6502676700 (LWP 3131)):
#0  0x00007f651f459bf9 in __GI___poll (fds=0x7f64fc004e00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f65187b2439 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f65187b254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f651fd99a9b in QEventDispatcherGlib::processEvents (this=0x7f64fc000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f651fd3ddea in QEventLoop::exec (this=this@entry=0x7f6502675d40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f651fb68b8a in QThread::exec (this=this@entry=0x5597535c3760) at thread/qthread.cpp:525
#6  0x00007f651d8688b5 in QQmlThreadPrivate::run (this=0x5597535c3760) at qml/ftw/qqmlthread.cpp:148
#7  0x00007f651fb73aab in QThreadPrivate::start (arg=0x5597535c3760) at thread/qthread_unix.cpp:367
#8  0x00007f651ab706db in start_thread (arg=0x7f6502676700) at pthread_create.c:463
#9  0x00007f651f46688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f650e95e700 (LWP 3130)):
#0  0x00007f651f459bf9 in __GI___poll (fds=0x7f6508003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f65187b2439 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f65187b254c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f651fd99a9b in QEventDispatcherGlib::processEvents (this=0x7f6508000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f651fd3ddea in QEventLoop::exec (this=this@entry=0x7f650e95dd30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007f651fb68b8a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007f65201e1e45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f651fb73aab in QThreadPrivate::start (arg=0x7f6520459d60) at thread/qthread_unix.cpp:367
#8  0x00007f651ab706db in start_thread (arg=0x7f650e95e700) at pthread_create.c:463
#9  0x00007f651f46688f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f6523e5d840 (LWP 3128)):
[KCrash Handler]
#6  QString::size (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:239
#7  QConcatenable<QString>::size (a=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:269
#8  QConcatenable<QStringBuilder<QString, QLatin1Char> >::size (p=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:424
#9  QConcatenable<QStringBuilder<QStringBuilder<QString, QLatin1Char>, QString> >::size (p=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:424
#10 QStringBuilder<QStringBuilder<QString, QLatin1Char>, QString>::convertTo<QString> (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:111
#11 QStringBuilder<QStringBuilder<QString, QLatin1Char>, QString>::operator QString (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:131
#12 KActivities::Imports::ActivityModel::Private::BackgroundCache::BackgroundCache (this=0x7f64cab5a620 <KActivities::Imports::ActivityModel::Private::backgrounds()::cache>) at ./src/imports/activitymodel.cpp:154
#13 KActivities::Imports::ActivityModel::Private::backgrounds () at ./src/imports/activitymodel.cpp:271
#14 KActivities::Imports::ActivityModel::ActivityModel (this=0x55975ae90cc0, parent=<optimized out>) at ./src/imports/activitymodel.cpp:293
#15 0x00007f64ca9441d0 in QQmlPrivate::QQmlElement<KActivities::Imports::ActivityModel>::QQmlElement (this=0x55975ae90cc0) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:98
#16 QQmlPrivate::createInto<KActivities::Imports::ActivityModel> (memory=0x55975ae90cc0) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:107
#17 0x00007f651d7e7772 in QQmlType::create (this=this@entry=0x7ffdb5530950, out=out@entry=0x7ffdb5530948, memory=memory@entry=0x7ffdb5530958, additionalMemory=additionalMemory@entry=144) at qml/qqmlmetatype.cpp:915
#18 0x00007f651d861106 in QQmlObjectCreator::createInstance (this=this@entry=0x7ffdb5531930, index=9, parent=0x559759e966e0, isContextObject=isContextObject@entry=false) at qml/qqmlobjectcreator.cpp:1163
#19 0x00007f651d85ef37 in QQmlObjectCreator::setPropertyBinding (this=this@entry=0x7ffdb5531930, bindingProperty=bindingProperty@entry=0x7f64fc11b4e8, binding=binding@entry=0x7f64f80c4fac) at qml/qqmlobjectcreator.cpp:825
#20 0x00007f651d85fa59 in QQmlObjectCreator::setupBindings (this=this@entry=0x7ffdb5531930, applyDeferredBindings=applyDeferredBindings@entry=false) at qml/qqmlobjectcreator.cpp:777
#21 0x00007f651d860a16 in QQmlObjectCreator::populateInstance (this=this@entry=0x7ffdb5531930, index=6, index@entry=8, instance=0x55975de27cb0, bindingTarget=0x55975de27cb0, valueTypeProperty=valueTypeProperty@entry=0x0) at qml/qqmlobjectcreator.cpp:1456
#22 0x00007f651d8618e3 in QQmlObjectCreator::createInstance (this=this@entry=0x7ffdb5531930, index=<optimized out>, parent=<optimized out>, isContextObject=isContextObject@entry=false) at qml/qqmlobjectcreator.cpp:1299
#23 0x00007f651d85ef37 in QQmlObjectCreator::setPropertyBinding (this=this@entry=0x7ffdb5531930, bindingProperty=bindingProperty@entry=0x7f64d406ad58, binding=binding@entry=0x7f64f80c4e0c) at qml/qqmlobjectcreator.cpp:825
#24 0x00007f651d85fa59 in QQmlObjectCreator::setupBindings (this=this@entry=0x7ffdb5531930, applyDeferredBindings=applyDeferredBindings@entry=false) at qml/qqmlobjectcreator.cpp:777
#25 0x00007f651d860a16 in QQmlObjectCreator::populateInstance (this=this@entry=0x7ffdb5531930, index=0, index@entry=6, instance=0x55975de1cf40, bindingTarget=0x55975de1cf40, valueTypeProperty=valueTypeProperty@entry=0x0) at qml/qqmlobjectcreator.cpp:1456
#26 0x00007f651d8618e3 in QQmlObjectCreator::createInstance (this=this@entry=0x7ffdb5531930, index=<optimized out>, parent=<optimized out>, isContextObject=isContextObject@entry=false) at qml/qqmlobjectcreator.cpp:1299
#27 0x00007f651d85ef37 in QQmlObjectCreator::setPropertyBinding (this=this@entry=0x7ffdb5531930, bindingProperty=bindingProperty@entry=0x7f64fc02a808, binding=binding@entry=0x7f64f80c49e4) at qml/qqmlobjectcreator.cpp:825
#28 0x00007f651d85fa59 in QQmlObjectCreator::setupBindings (this=this@entry=0x7ffdb5531930, applyDeferredBindings=applyDeferredBindings@entry=false) at qml/qqmlobjectcreator.cpp:777
#29 0x00007f651d860a16 in QQmlObjectCreator::populateInstance (this=this@entry=0x7ffdb5531930, index=-1, index@entry=0, instance=0x0, bindingTarget=0x0, valueTypeProperty=valueTypeProperty@entry=0x0) at qml/qqmlobjectcreator.cpp:1456
#30 0x00007f651d8618e3 in QQmlObjectCreator::createInstance (this=this@entry=0x7ffdb5531930, index=index@entry=0, parent=parent@entry=0x0, isContextObject=isContextObject@entry=true) at qml/qqmlobjectcreator.cpp:1299
#31 0x00007f651d861e94 in QQmlObjectCreator::create (this=0x7ffdb5531930, subComponentIndex=<optimized out>, parent=0x0, interrupt=0x0) at qml/qqmlobjectcreator.cpp:203
#32 0x00007f651d8617d2 in QQmlObjectCreator::createInstance (this=this@entry=0x559756ca2830, index=index@entry=0, parent=parent@entry=0x0, isContextObject=isContextObject@entry=true) at qml/qqmlobjectcreator.cpp:1202
#33 0x00007f651d861e94 in QQmlObjectCreator::create (this=this@entry=0x559756ca2830, subComponentIndex=<optimized out>, parent=parent@entry=0x0, interrupt=interrupt@entry=0x0) at qml/qqmlobjectcreator.cpp:203
#34 0x00007f651d7cfba4 in QQmlComponentPrivate::beginCreate (this=0x55975a0ccec0, context=<optimized out>) at qml/qqmlcomponent.cpp:868
#35 0x00007f651d7cddff in QQmlComponent::create (this=0x55975a014370, context=0x55975e23b9c0) at qml/qqmlcomponent.cpp:777
#36 0x00007f651de4c33d in QQuickView::continueExecute (this=this@entry=0x55975a29d470) at items/qquickview.cpp:481
#37 0x00007f651de4c892 in QQuickViewPrivate::execute (this=0x55975a5a8880) at items/qquickview.cpp:107
#38 0x00007f651de4ca0a in QQuickView::setSource (this=this@entry=0x55975a29d470, url=...) at items/qquickview.cpp:246
#39 0x00007f64cb8891a4 in setViewSource<std::unique_ptr<QQuickView, std::default_delete<QQuickView> > > (file=..., view=...) at ./kcms/activities/utils.h:46
#40 ActivitiesTab::ActivitiesTab (this=<optimized out>, parent=<optimized out>) at ./kcms/activities/ActivitiesTab.cpp:57
#41 0x00007f64cb88880c in MainConfigurationWidget::MainConfigurationWidget (this=0x55975d167340, parent=<optimized out>, args=...) at ./kcms/activities/MainConfigurationWidget.cpp:46
#42 0x00007f64cb888eee in KPluginFactory::createInstance<MainConfigurationWidget, QWidget> (parentWidget=<optimized out>, parent=<optimized out>, args=...) at /usr/include/KF5/KCoreAddons/kpluginfactory.h:533
#43 0x00007f652192f079 in KPluginFactory::create (this=this@entry=0x55975e2230f0, iface=0x7f6522a88c68 "KCModule", parentWidget=parentWidget@entry=0x0, parent=parent@entry=0x55975da32ec0, args=..., keyword=...) at ./src/lib/plugin/kpluginfactory.cpp:145
#44 0x00007f652362998c in KPluginFactory::create<KCModule> (args=..., keyword=..., parent=0x55975da32ec0, parentWidget=0x0, this=0x55975e2230f0) at /usr/include/KF5/KCoreAddons/kpluginfactory.h:575
#45 KService::createInstance<KCModule> (error=0x7ffdb5531fa8, args=..., parent=0x55975da32ec0, parentWidget=0x0, this=<optimized out>, this=<optimized out>) at /usr/include/KF5/KService/kservice.h:534
#46 KService::createInstance<KCModule> (error=0x7ffdb5531fa8, args=..., parent=0x55975da32ec0, this=<optimized out>) at /usr/include/KF5/KService/kservice.h:509
#47 KCModuleLoader::loadModule (mod=..., report=report@entry=KCModuleLoader::Inline, parent=0x55975da32ec0, args=...) at ./src/kcmoduleloader.cpp:92
#48 0x00007f65236309cf in KCModuleProxyPrivate::loadModule (this=this@entry=0x55975d7a50f0) at ./src/kcmoduleproxy.cpp:102
#49 0x00007f6523631508 in KCModuleProxy::realModule (this=this@entry=0x55975da32ec0) at ./src/kcmoduleproxy.cpp:75
#50 0x00007f6523631a33 in KCModuleProxy::showEvent (this=0x55975da32ec0, ev=0x7ffdb55324f0) at ./src/kcmoduleproxy.cpp:157
#51 0x00007f6520d9ab08 in QWidget::event (this=0x55975da32ec0, event=0x7ffdb55324f0) at kernel/qwidget.cpp:9281
#52 0x00007f6520d5be8c in QApplicationPrivate::notify_helper (this=this@entry=0x559753204f70, receiver=receiver@entry=0x55975da32ec0, e=e@entry=0x7ffdb55324f0) at kernel/qapplication.cpp:3727
#53 0x00007f6520d6345f in QApplication::notify (this=0x7ffdb5536590, receiver=0x55975da32ec0, e=0x7ffdb55324f0) at kernel/qapplication.cpp:3486
#54 0x00007f651fd3fab8 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x55975da32ec0, event=event@entry=0x7ffdb55324f0) at kernel/qcoreapplication.cpp:1048
#55 0x00007f6520d97578 in QCoreApplication::sendEvent (event=0x7ffdb55324f0, receiver=0x55975da32ec0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#56 QWidgetPrivate::show_helper (this=0x55975e1ed800) at kernel/qwidget.cpp:8039
#57 0x00007f6520d973a1 in QWidgetPrivate::show_recursive (this=<optimized out>) at kernel/qwidget.cpp:7910
#58 0x00007f6520d9744e in QWidgetPrivate::showChildren (this=this@entry=0x55975a5f1ef0, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:8416
#59 0x00007f6520d9754f in QWidgetPrivate::show_helper (this=this@entry=0x55975a5f1ef0) at kernel/qwidget.cpp:7986
#60 0x00007f6520d9a6ab in QWidget::setVisible (this=0x55975e02ae30, visible=<optimized out>) at kernel/qwidget.cpp:8335
#61 0x00007f6520d974a0 in QWidgetPrivate::showChildren (this=this@entry=0x55975dfaff10, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:8418
#62 0x00007f6520d9754f in QWidgetPrivate::show_helper (this=this@entry=0x55975dfaff10) at kernel/qwidget.cpp:7986
#63 0x00007f6520d9a6ab in QWidget::setVisible (this=0x55975e4cc9e0, visible=<optimized out>) at kernel/qwidget.cpp:8335
#64 0x00007f6520d7e367 in QStackedLayout::setCurrentIndex (this=0x55975358f510, index=1) at kernel/qstackedlayout.cpp:321
#65 0x00007f6520d7e674 in QStackedLayout::setCurrentWidget (this=0x55975358f510, widget=widget@entry=0x55975e4cc9e0) at kernel/qstackedlayout.cpp:376
#66 0x00007f6520efcfe1 in QStackedWidget::setCurrentWidget (this=<optimized out>, widget=widget@entry=0x55975e4cc9e0) at widgets/qstackedwidget.cpp:248
#67 0x00007f65223808e0 in KPageViewPrivate::_k_pageSelected (this=0x55975358ef40, index=..., previous=...) at ./src/kpageview.cpp:247
#68 0x00007f651fd6ead5 in QMetaObject::activate (sender=sender@entry=0x55975359ee00, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdb5532a70) at kernel/qobject.cpp:3771
#69 0x00007f651fd6f1a7 in QMetaObject::activate (sender=sender@entry=0x55975359ee00, m=m@entry=0x7f65201c26a0 <QItemSelectionModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdb5532a70) at kernel/qobject.cpp:3633
#70 0x00007f651fcf6387 in QItemSelectionModel::selectionChanged (this=this@entry=0x55975359ee00, _t1=..., _t2=...) at .moc/moc_qitemselectionmodel.cpp:452
#71 0x00007f651fcfaef0 in QItemSelectionModel::emitSelectionChanged (this=this@entry=0x55975359ee00, newSelection=..., oldSelection=...) at itemmodels/qitemselectionmodel.cpp:1871
#72 0x00007f651fcfe43b in QItemSelectionModel::select (this=0x55975359ee00, selection=..., command=...) at itemmodels/qitemselectionmodel.cpp:1338
#73 0x00007f651fcf83ec in QItemSelectionModel::select (this=this@entry=0x55975359ee00, index=..., command=command@entry=...) at itemmodels/qitemselectionmodel.cpp:1188
#74 0x00007f651fcf6734 in QItemSelectionModel::setCurrentIndex (this=this@entry=0x55975359ee00, index=..., command=command@entry=...) at itemmodels/qitemselectionmodel.cpp:1413
#75 0x00007f652237f9ba in KPageViewPrivate::updateSelection (this=<optimized out>) at ./src/kpageview.cpp:111
#76 0x00007f6522380715 in KPageViewPrivate::_k_modelChanged (this=0x55975358ef40) at ./src/kpageview.cpp:218
#77 0x00007f651fd6ead5 in QMetaObject::activate (sender=sender@entry=0x559753591da0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffdb5532ed0) at kernel/qobject.cpp:3771
#78 0x00007f651fd6f1a7 in QMetaObject::activate (sender=sender@entry=0x559753591da0, m=m@entry=0x7f65201c25a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffdb5532ed0) at kernel/qobject.cpp:3633
#79 0x00007f651fce7ff6 in QAbstractItemModel::layoutChanged (this=this@entry=0x559753591da0, _t1=..., _t2=<optimized out>, _t2@entry=QAbstractItemModel::NoLayoutChangeHint) at .moc/moc_qabstractitemmodel.cpp:566
#80 0x00007f6522386c26 in KPageWidgetModel::addPage (this=0x559753591da0, item=item@entry=0x55975c91c5b0) at ./src/kpagewidgetmodel.cpp:425
#81 0x00007f652238568d in KPageWidget::addPage (this=<optimized out>, item=item@entry=0x55975c91c5b0) at ./src/kpagewidget.cpp:94
#82 0x00007f6523a73e06 in ModuleView::addModule (this=this@entry=0x55975358ec00, module=0x559753570ee8) at ./core/ModuleView.cpp:202
#83 0x00007f6523a7418d in ModuleView::loadModule (this=this@entry=0x55975358ec00, menuItem=...) at ./core/ModuleView.cpp:155
#84 0x00007f6505c9ce04 in SidebarMode::setActiveSubCategory (this=this@entry=0x559753551d40, cat=6) at ./sidebar/SidebarMode.cpp:453
#85 0x00007f6505ca3fa7 in SidebarMode::qt_static_metacall (_o=_o@entry=0x559753551d40, _c=_c@entry=QMetaObject::WriteProperty, _id=_id@entry=4, _a=_a@entry=0x7ffdb5533200) at ./obj-x86_64-linux-gnu/sidebar/systemsettings_sidebar_mode_autogen/EWIEGA46WW/moc_SidebarMode.cpp:299
#86 0x00007f6505ca44b3 in SidebarMode::qt_metacall (this=0x559753551d40, _c=QMetaObject::WriteProperty, _id=4, _a=0x7ffdb5533200) at ./obj-x86_64-linux-gnu/sidebar/systemsettings_sidebar_mode_autogen/EWIEGA46WW/moc_SidebarMode.cpp:343
#87 0x00007f651d7816ca in QV4::QObjectWrapper::setProperty (engine=engine@entry=0x5597535c7190, object=object@entry=0x559753551d40, property=0x55975372e6b8, value=...) at jsruntime/qv4qobjectwrapper.cpp:528
#88 0x00007f651d7821de in QV4::QObjectWrapper::setQmlProperty (engine=0x5597535c7190, qmlContext=<optimized out>, object=0x559753551d40, name=<optimized out>, revisionMode=QV4::QObjectWrapper::IgnoreRevision, value=...) at jsruntime/qv4qobjectwrapper.cpp:429
#89 0x00007f651d7822eb in QV4::QObjectWrapper::put (m=0x7f6501a373c0, name=0x7f6501a373b8, value=...) at jsruntime/qv4qobjectwrapper.cpp:706
#90 0x00007f651d794fb2 in QV4::Object::put (v=..., name=<optimized out>, this=<optimized out>) at jsruntime/qv4object_p.h:370
#91 QV4::Runtime::method_storeProperty (engine=engine@entry=0x5597535c7190, object=..., nameIndex=<optimized out>, value=...) at jsruntime/qv4runtime.cpp:549
#92 0x00007f651d7a0629 in storePropertyHelper (f=0x5597537084a0, base=..., name=<optimized out>, value=...) at jit/qv4jit.cpp:368
#93 0x00007f64f8075c4b in ?? ()
#94 0x00005597537084a0 in ?? ()
#95 0x00007f6501a37350 in ?? ()
#96 0x00005597535c7190 in ?? ()
#97 0x0000000000000000 in ?? ()

Reported using DrKonqi