Application: systemsettings5 (5.4.1)

Qt Version: 5.5.0
Operating System: Linux 4.1.7-200.fc22.x86_64 x86_64
Distribution (Platform): Fedora RPMs

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

I had just opened system-settings and was attempting to find the panel where window behavior is modified. One poke and poof!

- Unusual behavior I noticed:

There was NO perceivable unusual behavior observed.

The crash can be reproduced sometimes.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/usr/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f84401cb840 (LWP 7957))]

Thread 3 (Thread 0x7f8424598700 (LWP 7958)):
#0  0x00007f843a4932fd in poll () at /usr/lib64/libc.so.6
#1  0x00007f84373e6182 in _xcb_conn_wait () at /usr/lib64/libxcb.so.1
#2  0x00007f84373e7c77 in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f84275c5999 in QXcbEventReader::run() () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f843b09f54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f8436ba2555 in start_thread () at /usr/lib64/libpthread.so.0
#6  0x00007f843a49eb9d in clone () at /usr/lib64/libc.so.6

Thread 2 (Thread 0x7f83efffb700 (LWP 8986)):
#0  0x00007f8435e30ed8 in g_mutex_lock (mutex=mutex@entry=0x7f83e803f200) at gthread-posix.c:1337
#1  0x00007f8435deb369 in g_main_context_prepare (context=context@entry=0x7f83e803f200, priority=priority@entry=0x7f83efffac30) at gmain.c:3412
#2  0x00007f8435debceb in g_main_context_iterate (context=context@entry=0x7f83e803f200, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3788
#3  0x00007f8435debecc in g_main_context_iteration (context=0x7f83e803f200, may_block=1) at gmain.c:3869
#4  0x00007f843b2d6dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f843b27ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f843b09a5a4 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f8439870245 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f843b09f54e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f8436ba2555 in start_thread () at /usr/lib64/libpthread.so.0
#10 0x00007f843a49eb9d in clone () at /usr/lib64/libc.so.6

Thread 1 (Thread 0x7f84401cb840 (LWP 7957)):
[KCrash Handler]
#5  0x00007f84397828f5 in QV4::Heap::StringObject::StringObject(QV4::ExecutionEngine*, QV4::Value const&) () at /usr/lib64/libQt5Qml.so.5
#6  0x00007f8439729b43 in QV4::ExecutionEngine::newStringObject(QV4::Value const&) () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f84397c2a72 in QV4::Runtime::getProperty(QV4::ExecutionEngine*, QV4::Value const&, int) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007f841550868d in  ()
#9  0x00007ffe00d30ef0 in  ()
#10 0x00007f83e80a8b9c in  ()
#11 0x00000000079524a0 in  ()
#12 0x00000000079dbba0 in  ()
#13 0x0000000000000003 in  ()
#14 0x00007f84397d4b51 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#15 0x00007f83f8d01010 in  ()
#16 0x000000000786a550 in  ()
#17 0x00007f83f8d01018 in  ()
#18 0x00007f83f8d01058 in  ()
#19 0x00007f843985572f in QQmlJavaScriptExpression::evaluate(QQmlContextData*, QV4::Value const&, QV4::CallData*, bool*) () at /usr/lib64/libQt5Qml.so.5
#20 0x00007f8439855c5d in QQmlJavaScriptExpression::evaluate(QQmlContextData*, QV4::Value const&, bool*) () at /usr/lib64/libQt5Qml.so.5
#21 0x00007f843985c79c in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#22 0x00007f843985cc5e in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () at /usr/lib64/libQt5Qml.so.5
#23 0x00007f8439838c57 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#24 0x00007f8439838c1e in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#25 0x00007f8439838c1e in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#26 0x00007f8439838c1e in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#27 0x00007f8439838c1e in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#28 0x00007f84397dba0c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib64/libQt5Qml.so.5
#29 0x00007f843b2aea60 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#30 0x00007f84397d50de in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#31 0x00007f84397d46a7 in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#32 0x00007f84397ec780 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#33 0x00007f84397ee29b in QQmlPropertyPrivate::writeValueProperty(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#34 0x00007f84397eecec in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::Value const&, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#35 0x00007f843985c82f in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib64/libQt5Qml.so.5
#36 0x00007f843985cc5e in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) () at /usr/lib64/libQt5Qml.so.5
#37 0x00007f8439838c57 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib64/libQt5Qml.so.5
#38 0x00007f84397dba0c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib64/libQt5Qml.so.5
#39 0x00007f843b2aea60 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#40 0x00007f8439dfb795 in QQuickLoaderPrivate::incubatorStateChanged(QQmlIncubator::Status) () at /usr/lib64/libQt5Quick.so.5
#41 0x00007f84397f553e in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () at /usr/lib64/libQt5Qml.so.5
#42 0x00007f84397f580f in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /usr/lib64/libQt5Qml.so.5
#43 0x00007f84397f108c in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () at /usr/lib64/libQt5Qml.so.5
#44 0x00007f8439dfa57a in QQuickLoaderPrivate::_q_sourceLoaded() () at /usr/lib64/libQt5Quick.so.5
#45 0x00007f8439dfa718 in QQuickLoaderPrivate::load() () at /usr/lib64/libQt5Quick.so.5
#46 0x00007f8439865e12 in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /usr/lib64/libQt5Qml.so.5
#47 0x00007f84397f0a4e in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /usr/lib64/libQt5Qml.so.5
#48 0x00007f84397f0b17 in QQmlComponentPrivate::completeCreate() () at /usr/lib64/libQt5Qml.so.5
#49 0x00007f84397f0980 in QQmlComponent::create(QQmlContext*) () at /usr/lib64/libQt5Qml.so.5
#50 0x00007f8439e0195d in QQuickView::continueExecute() () at /usr/lib64/libQt5Quick.so.5
#51 0x00007f8439e0209d in QQuickViewPrivate::execute() () at /usr/lib64/libQt5Quick.so.5
#52 0x00007f84162ce02e in KWin::Compositing::EffectView::init(KWin::Compositing::EffectView::ViewType) () at /usr/lib64/qt5/plugins/kwincompositing.so
#53 0x00007f84162ce72d in KWin::Compositing::EffectView::EffectView(KWin::Compositing::EffectView::ViewType, QWindow*) () at /usr/lib64/qt5/plugins/kwincompositing.so
#54 0x00007f84162d921d in KWinCompositingKCM::KWinCompositingKCM(QWidget*, QList<QVariant> const&, KWin::Compositing::EffectView::ViewType) () at /usr/lib64/qt5/plugins/kwincompositing.so
#55 0x00007f84162da94d in QObject* KPluginFactory::createInstance<KWinDesktopEffects, QWidget>(QWidget*, QObject*, QList<QVariant> const&) () at /usr/lib64/qt5/plugins/kwincompositing.so
#56 0x00007f843b712360 in KPluginFactory::create(char const*, QWidget*, QObject*, QList<QVariant> const&, QString const&) () at /usr/lib64/libKF5CoreAddons.so.5
#57 0x00007f843fb8e195 in KCModuleLoader::loadModule(KCModuleInfo const&, KCModuleLoader::ErrorReporting, QWidget*, QStringList const&) () at /usr/lib64/libKF5KCMUtils.so.5
#58 0x00007f843fb96a6f in KCModuleProxyPrivate::loadModule() () at /usr/lib64/libKF5KCMUtils.so.5
#59 0x00007f843fb97675 in KCModuleProxy::realModule() const () at /usr/lib64/libKF5KCMUtils.so.5
#60 0x00007f843fb97c73 in KCModuleProxy::showEvent(QShowEvent*) () at /usr/lib64/libKF5KCMUtils.so.5
#61 0x00007f843cddd5d8 in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#62 0x00007f843cd9a4ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#63 0x00007f843cd9f976 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#64 0x00007f843b28061b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#65 0x00007f843cdda226 in QWidgetPrivate::show_helper() () at /usr/lib64/libQt5Widgets.so.5
#66 0x00007f843cdd9f16 in QWidgetPrivate::showChildren(bool) () at /usr/lib64/libQt5Widgets.so.5
#67 0x00007f843cdd9faf in QWidgetPrivate::show_helper() () at /usr/lib64/libQt5Widgets.so.5
#68 0x00007f843cddcc65 in QWidget::setVisible(bool) () at /usr/lib64/libQt5Widgets.so.5
#69 0x00007f843cdd9f28 in QWidgetPrivate::showChildren(bool) () at /usr/lib64/libQt5Widgets.so.5
#70 0x00007f843cdd9faf in QWidgetPrivate::show_helper() () at /usr/lib64/libQt5Widgets.so.5
#71 0x00007f843cddcc65 in QWidget::setVisible(bool) () at /usr/lib64/libQt5Widgets.so.5
#72 0x00007f843cdbf5a9 in QStackedLayout::setCurrentIndex(int) () at /usr/lib64/libQt5Widgets.so.5
#73 0x00007f843cdbf794 in QStackedLayout::setCurrentWidget(QWidget*) () at /usr/lib64/libQt5Widgets.so.5
#74 0x00007f843cf39541 in QStackedWidget::setCurrentWidget(QWidget*) () at /usr/lib64/libQt5Widgets.so.5
#75 0x00007f843d5c0809 in KPageViewPrivate::_k_pageSelected(QItemSelection const&, QItemSelection const&) () at /usr/lib64/libKF5WidgetsAddons.so.5
#76 0x00007f843d5c1581 in KPageView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib64/libKF5WidgetsAddons.so.5
#77 0x00007f843b2af15a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#78 0x00007f843b230fc7 in QItemSelectionModel::selectionChanged(QItemSelection const&, QItemSelection const&) () at /usr/lib64/libQt5Core.so.5
#79 0x00007f843b23541b in QItemSelectionModel::emitSelectionChanged(QItemSelection const&, QItemSelection const&) () at /usr/lib64/libQt5Core.so.5
#80 0x00007f843b2378b4 in QItemSelectionModel::select(QItemSelection const&, QFlags<QItemSelectionModel::SelectionFlag>) () at /usr/lib64/libQt5Core.so.5
#81 0x00007f843b232e2c in QItemSelectionModel::select(QModelIndex const&, QFlags<QItemSelectionModel::SelectionFlag>) () at /usr/lib64/libQt5Core.so.5
#82 0x00007f843b231414 in QItemSelectionModel::setCurrentIndex(QModelIndex const&, QFlags<QItemSelectionModel::SelectionFlag>) () at /usr/lib64/libQt5Core.so.5
#83 0x00007f843d5c0177 in KPageViewPrivate::_k_rebuildGui() () at /usr/lib64/libKF5WidgetsAddons.so.5
#84 0x00007f843d5c1475 in KPageViewPrivate::_k_modelChanged() () at /usr/lib64/libKF5WidgetsAddons.so.5
#85 0x00007f843d5c1599 in KPageView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib64/libKF5WidgetsAddons.so.5
#86 0x00007f843b2af15a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#87 0x00007f843b32b356 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /usr/lib64/libQt5Core.so.5
#88 0x00007f843d5c8d58 in KPageWidgetModel::addPage(KPageWidgetItem*) () at /usr/lib64/libKF5WidgetsAddons.so.5
#89 0x00007f843fdd3f08 in ModuleView::addModule(KCModuleInfo*) () at /usr/lib64/libsystemsettingsview.so.3
#90 0x00007f843fdd4427 in ModuleView::loadModule(QModelIndex) () at /usr/lib64/libsystemsettingsview.so.3
#91 0x00007f8418a9fb79 in ClassicMode::changeModule(QModelIndex const&) () at /usr/lib64/qt5/plugins/classic_mode.so
#92 0x00007f843b2af15a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#93 0x00007f843cff2c85 in QAbstractItemView::clicked(QModelIndex const&) () at /usr/lib64/libQt5Widgets.so.5
#94 0x00007f843cff6c63 in QAbstractItemView::mouseReleaseEvent(QMouseEvent*) () at /usr/lib64/libQt5Widgets.so.5
#95 0x00007f843d041123 in QTreeView::mouseReleaseEvent(QMouseEvent*) () at /usr/lib64/libQt5Widgets.so.5
#96 0x00007f843cddd5d8 in QWidget::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#97 0x00007f843cedc5de in QFrame::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#98 0x00007f843d001b5b in QAbstractItemView::viewportEvent(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#99 0x00007f843d04078c in QTreeView::viewportEvent(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#100 0x00007f843b28040c in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#101 0x00007f843cd9a48c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#102 0x00007f843cda0079 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#103 0x00007f843b28061b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#104 0x00007f843cd9ef82 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib64/libQt5Widgets.so.5
#105 0x00007f843cdf7d8b in QWidgetWindow::handleMouseEvent(QMouseEvent*) () at /usr/lib64/libQt5Widgets.so.5
#106 0x00007f843cdfa33b in QWidgetWindow::event(QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#107 0x00007f843cd9a4ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#108 0x00007f843cd9f976 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#109 0x00007f843b28061b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#110 0x00007f843c5edaf1 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib64/libQt5Gui.so.5
#111 0x00007f843c5ef7c5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib64/libQt5Gui.so.5
#112 0x00007f843c5d35d8 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Gui.so.5
#113 0x00007f84275f6b10 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /usr/lib64/libQt5XcbQpa.so.5
#114 0x00007f8435deba8a in g_main_context_dispatch (context=0x7f841c0016f0) at gmain.c:3122
#115 0x00007f8435deba8a in g_main_context_dispatch (context=context@entry=0x7f841c0016f0) at gmain.c:3737
#116 0x00007f8435debe20 in g_main_context_iterate (context=context@entry=0x7f841c0016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3808
#117 0x00007f8435debecc in g_main_context_iteration (context=0x7f841c0016f0, may_block=1) at gmain.c:3869
#118 0x00007f843b2d6d8f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#119 0x00007f843b27ddaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#120 0x00007f843b285e6c in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#121 0x000000000040ea5b in main ()

Possible duplicates by query: bug 351767.

Reported using DrKonqi