Bug 469213

Application: systemsettings (5.27.3)

Qt Version: 5.15.8
Frameworks Version: 5.105.0
Operating System: Linux 6.2.13-300.fc38.x86_64 x86_64
Windowing System: Wayland
Distribution: Fedora Linux 38 (KDE Plasma)
DrKonqi: 5.27.4 [KCrashBackend]

-- Information about the crash:
System Settings always crashes whenever I attempt to link an OpenDesktop account.

A "signon-ui" process will be started, but no window ever appears. A few seconds after the process starts, System Settings crashes. (The process stays alive and needs to be sigtermed manually.)

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f6c44f613a1 in QFontconfigDatabase::setupFontEngine(QFontEngineFT*, QFontDef const&) const () at /lib64/libQt5WaylandClient.so.5
#5  0x00007f6c44f61df2 in QFontconfigDatabase::fontEngine(QFontDef const&, void*) () at /lib64/libQt5WaylandClient.so.5
#6  0x00007f6c47a2a54b in loadEngine(int, QFontDef const&, QtFontFamily*, QtFontFoundry*, QtFontStyle*, QtFontSize*) [clone .isra.0] () at /lib64/libQt5Gui.so.5
#7  0x00007f6c47a2abca in QFontDatabase::findFont(QFontDef const&, int, bool) () at /lib64/libQt5Gui.so.5
#8  0x00007f6c47a2b838 in QFontDatabase::load(QFontPrivate const*, int) () at /lib64/libQt5Gui.so.5
#9  0x00007f6c47a00de3 in QFontPrivate::engineForScript(int) const () at /lib64/libQt5Gui.so.5
#10 0x00007f6c47a31575 in QTextEngine::fontEngine(QScriptItem const&, QFixed*, QFixed*, QFixed*) const () at /lib64/libQt5Gui.so.5
#11 0x00007f6c47a32f1f in QTextEngine::shapeText(int) const () at /lib64/libQt5Gui.so.5
#12 0x00007f6c47a45bc7 in QTextLine::layout_helper(int) () at /lib64/libQt5Gui.so.5
#13 0x00007f6c458c60d5 in QQuickTextPrivate::setLineGeometry(QTextLine&, double, double&) () at /lib64/libQt5Quick.so.5
#14 0x00007f6c458c6eb8 in QQuickTextPrivate::setupTextLayout(double*) () at /lib64/libQt5Quick.so.5
#15 0x00007f6c458c90b2 in QQuickTextPrivate::updateSize() () at /lib64/libQt5Quick.so.5
#16 0x00007f6c458ca883 in QQuickTextPrivate::updateLayout() () at /lib64/libQt5Quick.so.5
#17 0x00007f6c4532626b in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#18 0x00007f6c452b80c1 in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#19 0x00007f6c452b86d0 in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /lib64/libQt5Qml.so.5
#20 0x00007f6c452b1cd4 in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () at /lib64/libQt5Qml.so.5
#21 0x00007f6c4591d5c5 in QQuickLoaderPrivate::_q_sourceLoaded() () at /lib64/libQt5Quick.so.5
#22 0x00007f6c4532626b in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#23 0x00007f6c452b80c1 in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#24 0x00007f6c452b86d0 in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /lib64/libQt5Qml.so.5
#25 0x00007f6c452b1cd4 in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () at /lib64/libQt5Qml.so.5
#26 0x00007f6c4591d5c5 in QQuickLoaderPrivate::_q_sourceLoaded() () at /lib64/libQt5Quick.so.5
#27 0x00007f6c4591e8d2 in QQuickLoader::qt_metacall(QMetaObject::Call, int, void**) () at /lib64/libQt5Quick.so.5
#28 0x00007f6c45318ddd in QObjectPointerBinding::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#29 0x00007f6c4531aa1d in QQmlNonbindingBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&, QFlags<QQmlPropertyData::WriteFlag>, QV4::Scope&) () at /lib64/libQt5Qml.so.5
#30 0x00007f6c453181a5 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#31 0x00007f6c452f39d7 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /lib64/libQt5Qml.so.5
#32 0x00007f6c474e81c0 in void doActivate<false>(QObject*, int, void**) () at /lib64/libQt5Core.so.5
#33 0x00007f6c45297e78 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#34 0x00007f6c45318b21 in QObjectPointerBinding::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#35 0x00007f6c4531aa1d in QQmlNonbindingBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&, QFlags<QQmlPropertyData::WriteFlag>, QV4::Scope&) () at /lib64/libQt5Qml.so.5
#36 0x00007f6c453181a5 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /lib64/libQt5Qml.so.5
#37 0x00007f6c452f39d7 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /lib64/libQt5Qml.so.5
#38 0x00007f6c474e81c0 in void doActivate<false>(QObject*, int, void**) () at /lib64/libQt5Core.so.5
#39 0x00007f6c4591f07d in QQuickLoaderPrivate::incubatorStateChanged(QQmlIncubator::Status) () at /lib64/libQt5Quick.so.5
#40 0x00007f6c452b832a in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#41 0x00007f6c452b86d0 in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /lib64/libQt5Qml.so.5
#42 0x00007f6c452b1cd4 in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () at /lib64/libQt5Qml.so.5
#43 0x00007f6c4591d5c5 in QQuickLoaderPrivate::_q_sourceLoaded() () at /lib64/libQt5Quick.so.5
#44 0x00007f6c4532626b in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#45 0x00007f6c452b80c1 in QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) () at /lib64/libQt5Qml.so.5
#46 0x00007f6c452b86d0 in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /lib64/libQt5Qml.so.5
#47 0x00007f6c452b1cd4 in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () at /lib64/libQt5Qml.so.5
#48 0x00007f6c4777fab9 in KDeclarative::QmlObject::completeInitialization(QHash<QString, QVariant> const&) () at /lib64/libKF5Declarative.so.5
#49 0x00007f6c45e93af2 in KQuickAddons::ConfigModule::mainUi() () at /lib64/libKF5QuickAddons.so.5
#50 0x00007f6c487775a2 in KCModuleLoader::loadModule(KPluginMetaData const&, QWidget*, QList<QVariant> const&) () at /lib64/libKF5KCMUtils.so.5
#51 0x00007f6c4877aaeb in KCModuleProxyPrivate::loadModule() () at /lib64/libKF5KCMUtils.so.5
#52 0x00007f6c4877b131 in KCModuleProxy::realModule() const () at /lib64/libKF5KCMUtils.so.5
#53 0x00007f6c48ea6dba in ModuleView::updatePageIconHeader(KPageWidgetItem*) () at /lib64/libsystemsettingsview.so.3
#54 0x00007f6c48eaa3cd in ModuleView::addModule(MenuItem*, QStringList const&) () at /lib64/libsystemsettingsview.so.3
#55 0x00007f6c2c209191 in SidebarMode::loadModule(QModelIndex const&, QStringList const&) [clone .part.0] () at /usr/lib64/qt5/plugins/systemsettingsview/systemsettings_sidebar_mode.so
#56 0x00007f6c2c20c036 in SidebarMode::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib64/qt5/plugins/systemsettingsview/systemsettings_sidebar_mode.so
#57 0x00007f6c2c20ca32 in SidebarMode::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib64/qt5/plugins/systemsettingsview/systemsettings_sidebar_mode.so
#58 0x00007f6c452f3f3a in QQmlObjectOrGadget::metacall(QMetaObject::Call, int, void**) const () at /lib64/libQt5Qml.so.5
#59 0x00007f6c451c6b73 in CallPrecise(QQmlObjectOrGadget const&, QQmlPropertyData const&, QV4::ExecutionEngine*, QV4::CallData*, QMetaObject::Call) () at /lib64/libQt5Qml.so.5
#60 0x00007f6c451c896a in QV4::QObjectMethod::callInternal(QV4::Value const*, QV4::Value const*, int) const () at /lib64/libQt5Qml.so.5
#61 0x00007f6c451f9391 in QV4::Runtime::CallPropertyLookup::call(QV4::ExecutionEngine*, QV4::Value const&, unsigned int, QV4::Value*, int) () at /lib64/libQt5Qml.so.5
#62 0x00007f6bec741a20 in  ()
#63 0x0000000000000000 in  ()
[Inferior 1 (process 16978) detached]

Reported using DrKonqi