Bug 373094

Application: systemsettings5 (5.8.2)

Qt Version: 5.7.1
Frameworks Version: 5.27.0
Operating System: Linux 4.7.0-0.bpo.1-amd64 x86_64
Distribution: Debian GNU/Linux stable-updates (sid)

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

I was going to systemsettings-application style and changed the window decoration, clicked on apply and all settings.

The crash can be reproduced every time.

-- 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 0x7f8c658685c0 (LWP 4399))]

Thread 4 (Thread 0x7f8c37184700 (LWP 4405)):
#0  0x00007f8c61f6d56d in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f8c5d2699f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8c5d269b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8c6288b6fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8c6283507a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c626570d3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8c60fdd5d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8c6265bd88 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8c5f179464 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007f8c61f769df in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7f8c4b6ac700 (LWP 4401)):
#0  0x00007f8c61f6d56d in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f8c5d2699f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8c5d269b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8c6288b6fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8c6283507a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c626570d3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8c659bb6d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f8c6265bd88 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8c5f179464 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#9  0x00007f8c61f769df in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7f8c541a7700 (LWP 4400)):
#0  0x00007f8c61f6d56d in poll () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f8c5f9f3150 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f8c5f9f4ee9 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f8c56706b69 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f8c6265bd88 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8c5f179464 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007f8c61f769df in clone () from /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7f8c658685c0 (LWP 4399)):
[KCrash Handler]
#6  0x00007f8c60eafd85 in QV4::WeakValue::free() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8c60f20a82 in QV4::QObjectWrapper::destroyObject(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f8c60db6dbf in QV4::MemoryManager::sweep(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f8c60db81cc in QV4::MemoryManager::~MemoryManager() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f8c60e9f69b in QV4::ExecutionEngine::~ExecutionEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f8c60fdf086 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f8c60fdf1a9 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f8c60e369a6 in QJSEngine::~QJSEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007f8c60f4a90d in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007f8c60f4a9c9 in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f8c628614b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f8c6286a82f in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f8c612ab084 in QQuickWindow::~QQuickWindow() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007f8c6135ac19 in QQuickView::~QQuickView() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f8c63d85a55 in QWindowContainer::~QWindowContainer() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f8c63d85a79 in QWindowContainer::~QWindowContainer() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f8c628614b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f8c63d63b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f8c63d63e19 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f8c628614b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f8c63d63b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f8c63d63e19 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f8c628614b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f8c63d63b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f8c63eb1609 in QStackedWidget::~QStackedWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f8c628614b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f8c63d63b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007f8c63ebe3d9 in QTabWidget::~QTabWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007f8c628614b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f8c63d63b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f8c3e87b0be in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_kwindecoration.so
#37 0x00007f8c628614b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f8c63d63b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00007f8c64a092dd in KCModule::~KCModule() () from /usr/lib/x86_64-linux-gnu/libKF5ConfigWidgets.so.5
#40 0x00007f8c3e877981 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_kwindecoration.so
#41 0x00007f8c653ef074 in KCModuleProxy::deleteClient() () from /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#42 0x00007f8c653ef11c in KCModuleProxy::~KCModuleProxy() () from /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#43 0x00007f8c653ef2d9 in KCModuleProxy::~KCModuleProxy() () from /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#44 0x00007f8c628614b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007f8c63d63b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007f8c63d63e19 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007f8c628614b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007f8c63d63b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007f8c63edc679 in QScrollArea::~QScrollArea() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#50 0x00007f8c6432066f in KPageWidgetItem::~KPageWidgetItem() () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#51 0x00007f8c64320719 in KPageWidgetItem::~KPageWidgetItem() () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#52 0x00007f8c643211bb in ?? () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#53 0x00007f8c64321dde in KPageWidgetModel::removePage(KPageWidgetItem*) () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#54 0x00007f8c6562aac5 in ModuleView::closeModules() () from /usr/lib/x86_64-linux-gnu/libsystemsettingsview.so.3
#55 0x00007f8c3f9872ce in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/icon_mode.so
#56 0x00007f8c62862c89 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#57 0x00007f8c63d1a162 in QAction::triggered(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#58 0x00007f8c63d1cb50 in QAction::activate(QAction::ActionEvent) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#59 0x00007f8c63e0a73d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#60 0x00007f8c63e0a974 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#61 0x00007f8c63ed6a1a in QToolButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#62 0x00007f8c63d681d8 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#63 0x00007f8c63ed6af9 in QToolButton::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#64 0x00007f8c63d20b2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#65 0x00007f8c63d2919d in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#66 0x00007f8c62837090 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#67 0x00007f8c63d2784d in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#68 0x00007f8c63d82866 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#69 0x00007f8c63d85273 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#70 0x00007f8c63d20b2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#71 0x00007f8c63d282e1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#72 0x00007f8c62837090 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#73 0x00007f8c63785b03 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#74 0x00007f8c63787685 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#75 0x00007f8c6376561b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#76 0x00007f8c5673d4e0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#77 0x00007f8c5d2697f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007f8c5d269a60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#79 0x00007f8c5d269b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#80 0x00007f8c6288b6df in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#81 0x00007f8c6283507a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#82 0x00007f8c6283d7ec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#83 0x000000000040c0d3 in ?? ()
#84 0x00007f8c61eae2b1 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#85 0x000000000040c14a in _start ()

Possible duplicates by query: bug 372968, bug 372626, bug 372621.

Reported using DrKonqi