Bug 354961

Application: systemsettings5 (5.4.1)

Qt Version: 5.5.0
Operating System: Linux 4.1.12-1-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
I clicked on  System Settings->Desktop Behaviour and window crashed

The crash can be reproduced sometimes.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5465195780 (LWP 6839))]

Thread 5 (Thread 0x7f5453fd2700 (LWP 6840)):
#0  0x00007f5460ecfc1d in poll () at /lib64/libc.so.6
#1  0x00007f545dc76422 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f545dc7800f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f5456992c29 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f54615cd55f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f545d3eb0a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f5460ed804d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f54289d9700 (LWP 7251)):
#0  0x00007f5460ecfc1d in poll () at /lib64/libc.so.6
#1  0x00007f545cec6e64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f545cec6f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f54617fea5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f54617a5a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f54615c884a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f545fb3b5f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f54615cd55f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f545d3eb0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f5460ed804d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f541b5e1700 (LWP 7265)):
#0  0x00007f5460ecfc1d in poll () at /lib64/libc.so.6
#1  0x00007f545cec6e64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f545cec6f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f54617fea5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f54617a5a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f54615c884a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f545fb3b5f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f54615cd55f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007f545d3eb0a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f5460ed804d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f541e611700 (LWP 10417)):
#0  0x00007f54617fea54 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#1  0x00007f54617a5a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#2  0x00007f54615c884a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#3  0x00007f545fb3b5f8 in  () at /usr/lib64/libQt5Qml.so.5
#4  0x00007f54615cd55f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007f545d3eb0a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f5460ed804d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f5465195780 (LWP 6839)):
[KCrash Handler]
#6  0x00007f545fa51fea in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f545f9f5cc3 in QV4::ExecutionEngine::newStringObject(QV4::Value const&) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f545fa928e1 in QV4::Runtime::getProperty(QV4::ExecutionEngine*, QV4::Value const&, int) () at /usr/lib64/libQt5Qml.so.5
#9  0x00007f545eec924d in  ()
#10 0x00007f54300c9d4c in  ()
#11 0x0000000000000003 in  ()
#12 0x0000000003a50750 in  ()
#13 0x00007f545faa4a69 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#14 0x00007f545fabe320 in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#15 0x0000000001df1990 in  ()
#16 0x000000000000000a in  ()
#17 0x00007f545fb22a1e in  () at /usr/lib64/libQt5Qml.so.5
#18 0x00007f545fb27fd1 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#19 0x00007f545fb285de in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () at /usr/lib64/libQt5Qml.so.5
#20 0x00007f545fb04c9f in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#21 0x00007f545fb04c71 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#22 0x00007f545fb04c71 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#23 0x00007f545fb04c71 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#24 0x00007f545fb04c71 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#25 0x00007f545faac414 in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib64/libQt5Qml.so.5
#26 0x00007f54617d7213 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#27 0x00007f545faa4f9e in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#28 0x00007f545faa4777 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#29 0x00007f545fabd08e in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#30 0x00007f545fabddcf in QQmlPropertyPrivate::writeValueProperty(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#31 0x00007f545fabec04 in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#32 0x00007f545fb28053 in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#33 0x00007f545fb285de in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () at /usr/lib64/libQt5Qml.so.5
#34 0x00007f545fb04c9f in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#35 0x00007f545faac414 in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib64/libQt5Qml.so.5
#36 0x00007f54617d7213 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#37 0x00007f54600d711d in  () at /usr/lib64/libQt5Quick.so.5
#38 0x00007f545fac5352 in  () at /usr/lib64/libQt5Qml.so.5
#39 0x00007f545fac56ea in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /usr/lib64/libQt5Qml.so.5
#40 0x00007f545fac0e9c in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () at /usr/lib64/libQt5Qml.so.5
#41 0x00007f54600d5fda in  () at /usr/lib64/libQt5Quick.so.5
#42 0x00007f54600d6158 in  () at /usr/lib64/libQt5Quick.so.5
#43 0x00007f545fb3188b in  () at /usr/lib64/libQt5Qml.so.5
#44 0x00007f545fac094b in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /usr/lib64/libQt5Qml.so.5
#45 0x00007f545fac0a07 in QQmlComponentPrivate::completeCreate() () at /usr/lib64/libQt5Qml.so.5
#46 0x00007f545fac0890 in QQmlComponent::create(QQmlContext*) () at /usr/lib64/libQt5Qml.so.5
#47 0x00007f54600dcf74 in QQuickView::continueExecute() () at /usr/lib64/libQt5Quick.so.5
#48 0x00007f54600dd3ad in  () at /usr/lib64/libQt5Quick.so.5
#49 0x00007f5440dbee57 in  () at /usr/lib64/qt5/plugins/kwincompositing.so
#50 0x00007f5440dc1dad in  () at /usr/lib64/qt5/plugins/kwincompositing.so
#51 0x00007f5440dcb397 in  () at /usr/lib64/qt5/plugins/kwincompositing.so
#52 0x00007f5440dcc72d in  () at /usr/lib64/qt5/plugins/kwincompositing.so
#53 0x00007f5461c40be0 in KPluginFactory::create(char const*, QWidget*, QObject*, QList<QVariant> const&, QString const&) () at /usr/lib64/libKF5CoreAddons.so.5
#54 0x00007f5464b8164c in KCModuleLoader::loadModule(KCModuleInfo const&, KCModuleLoader::ErrorReporting, QWidget*, QStringList const&) () at /usr/lib64/libKF5KCMUtils.so.5
#55 0x00007f5464b87acc in  () at /usr/lib64/libKF5KCMUtils.so.5
#56 0x00007f5464b886a5 in KCModuleProxy::realModule() const () at /usr/lib64/libKF5KCMUtils.so.5
#57 0x00007f5464b88bc3 in KCModuleProxy::showEvent(QShowEvent*) () at /usr/lib64/libKF5KCMUtils.so.5
#58 0x00007f54633274b2 in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#59 0x00007f54632e6e8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#60 0x00007f54632ebcd8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#61 0x00007f54617a7ba5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#62 0x00007f5463323d6b in QWidgetPrivate::show_helper() () at /usr/lib64/libQt5Widgets.so.5
#63 0x00007f5463323caa in QWidgetPrivate::showChildren(bool) () at /usr/lib64/libQt5Widgets.so.5
#64 0x00007f5463323d2f in QWidgetPrivate::show_helper() () at /usr/lib64/libQt5Widgets.so.5
#65 0x00007f5463326717 in QWidget::setVisible(bool) () at /usr/lib64/libQt5Widgets.so.5
#66 0x00007f5463323cc0 in QWidgetPrivate::showChildren(bool) () at /usr/lib64/libQt5Widgets.so.5
#67 0x00007f5463323d2f in QWidgetPrivate::show_helper() () at /usr/lib64/libQt5Widgets.so.5
#68 0x00007f5463326717 in QWidget::setVisible(bool) () at /usr/lib64/libQt5Widgets.so.5
#69 0x00007f546330b42f in QStackedLayout::setCurrentIndex(int) () at /usr/lib64/libQt5Widgets.so.5
#70 0x00007f546330b624 in QStackedLayout::setCurrentWidget(QWidget*) () at /usr/lib64/libQt5Widgets.so.5
#71 0x00007f5463479a41 in QStackedWidget::setCurrentWidget(QWidget*) () at /usr/lib64/libQt5Widgets.so.5
#72 0x00007f5463ae5144 in  () at /usr/lib64/libKF5WidgetsAddons.so.5
#73 0x00007f54617d7996 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#74 0x00007f546175c677 in QItemSelectionModel::selectionChanged(QItemSelection const&, QItemSelection const&) () at /usr/lib64/libQt5Core.so.5
#75 0x00007f54617627a0 in QItemSelectionModel::emitSelectionChanged(QItemSelection const&, QItemSelection const&) () at /usr/lib64/libQt5Core.so.5
#76 0x00007f54617636c5 in QItemSelectionModel::select(QItemSelection const&, QFlags<QItemSelectionModel::SelectionFlag>) () at /usr/lib64/libQt5Core.so.5
#77 0x00007f5463555fd7 in QListView::setSelection(QRect const&, QFlags<QItemSelectionModel::SelectionFlag>) () at /usr/lib64/libQt5Widgets.so.5
#78 0x00007f54635357ee in QAbstractItemView::mousePressEvent(QMouseEvent*) () at /usr/lib64/libQt5Widgets.so.5
#79 0x00007f54633272ca in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#80 0x00007f54634214de in QFrame::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#81 0x00007f546353c4cb in QAbstractItemView::viewportEvent(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#82 0x00007f54617a7de3 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#83 0x00007f54632e6e6c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#84 0x00007f54632ec2db in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#85 0x00007f54617a7ba5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#86 0x00007f54632eb1a1 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib64/libQt5Widgets.so.5
#87 0x00007f546334025b in  () at /usr/lib64/libQt5Widgets.so.5
#88 0x00007f5463342453 in  () at /usr/lib64/libQt5Widgets.so.5
#89 0x00007f54632e6e8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#90 0x00007f54632ebcd8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#91 0x00007f54617a7ba5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#92 0x00007f5462b4f3b4 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib64/libQt5Gui.so.5
#93 0x00007f5462b50bc5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib64/libQt5Gui.so.5
#94 0x00007f5462b35d68 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Gui.so.5
#95 0x00007f54569bdf20 in  () at /usr/lib64/libQt5XcbQpa.so.5
#96 0x00007f545cec6c84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#97 0x00007f545cec6ed8 in  () at /usr/lib64/libglib-2.0.so.0
#98 0x00007f545cec6f7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#99 0x00007f54617fea3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#100 0x00007f54617a5a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#101 0x00007f54617ad5d6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#102 0x00000000004103cf in main ()

Reported using DrKonqi