Bug 373793

Application: systemsettings5 (5.8.4)

Qt Version: 5.7.1
Frameworks Version: 5.27.0
Operating System: Linux 4.8.14-300.fc25.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
- What I was doing when the application crashed:
Just browsing in the workspcae behavior section
- Unusual behavior I noticed:
I did not notice anything unusual
- Custom settings of the application:
My most significant change was in the composer I changed from opengl 2.0 to opengl 3

The crash can be reproduced every time.

-- Backtrace:
Application: Configurações do Sistema (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f37a10d06c0 (LWP 8112))]

Thread 7 (Thread 0x7f376ef7a700 (LWP 8356)):
#0  0x00007f37a5b42814 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x00007f37a5afd10a in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f37a5afd26c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f37ada7073b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f37ada2173a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f37ad87e5f3 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f374ee342c7 in KCupsConnection::run() () at /lib64/libkcupslib.so
#7  0x00007f37ad8829da in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f37a9d466ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f37acc75f6f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f376e0cd700 (LWP 8163)):
#0  0x00007f37acc6a00d in poll () at /lib64/libc.so.6
#1  0x00007f37a5afd156 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f37a5afd26c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f37ada7073b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f37ada2173a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f37ad87e5f3 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f37ac4424e5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f37ad8829da in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f37a9d466ca in start_thread () at /lib64/libpthread.so.0
#9  0x00007f37acc75f6f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f377fd46700 (LWP 8125)):
#0  0x00007f37acc65bdd in read () at /lib64/libc.so.6
#1  0x00007f37a5b41450 in g_wakeup_acknowledge () at /lib64/libglib-2.0.so.0
#2  0x00007f37a5afcc60 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f37a5afd0f4 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f37a5afd4e2 in g_main_loop_run () at /lib64/libglib-2.0.so.0
#5  0x00007f37964d7946 in gdbus_shared_thread_func () at /lib64/libgio-2.0.so.0
#6  0x00007f37a5b24b03 in g_thread_proxy () at /lib64/libglib-2.0.so.0
#7  0x00007f37a9d466ca in start_thread () at /lib64/libpthread.so.0
#8  0x00007f37acc75f6f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f3780547700 (LWP 8124)):
#0  0x00007f37acc6a00d in poll () at /lib64/libc.so.6
#1  0x00007f37a5afd156 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f37a5afd26c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f37a5afd2b1 in glib_worker_main () at /lib64/libglib-2.0.so.0
#4  0x00007f37a5b24b03 in g_thread_proxy () at /lib64/libglib-2.0.so.0
#5  0x00007f37a9d466ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f37acc75f6f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f378d9fb700 (LWP 8114)):
#0  0x00007f37ad87ad93 in QMutex::unlock() () at /lib64/libQt5Core.so.5
#1  0x00007f37ada70611 in postEventSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#2  0x00007f37a5afcba9 in g_main_context_check () at /lib64/libglib-2.0.so.0
#3  0x00007f37a5afd0f4 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f37a5afd26c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f37ada7073b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f37ada2173a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f37ad87e5f3 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f37ae16d739 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#9  0x00007f37ad8829da in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007f37a9d466ca in start_thread () at /lib64/libpthread.so.0
#11 0x00007f37acc75f6f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f3795d7c700 (LWP 8113)):
#0  0x00007f37acc6a00d in poll () at /lib64/libc.so.6
#1  0x00007f37aa385d10 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f37aa387aa9 in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f379a445d69 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f37ad8829da in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f37a9d466ca in start_thread () at /lib64/libpthread.so.0
#6  0x00007f37acc75f6f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f37a10d06c0 (LWP 8112)):
[KCrash Handler]
#6  0x00007f37ac314b95 in QV4::WeakValue::free() () at /lib64/libQt5Qml.so.5
#7  0x00007f37ac385912 in QV4::QObjectWrapper::destroyObject(bool) () at /lib64/libQt5Qml.so.5
#8  0x00007f37ac21bbaf in QV4::MemoryManager::sweep(bool) () at /lib64/libQt5Qml.so.5
#9  0x00007f37ac21cfbc in QV4::MemoryManager::~MemoryManager() () at /lib64/libQt5Qml.so.5
#10 0x00007f37ac3044ab in QV4::ExecutionEngine::~ExecutionEngine() () at /lib64/libQt5Qml.so.5
#11 0x00007f37ac443f96 in QV8Engine::~QV8Engine() () at /lib64/libQt5Qml.so.5
#12 0x00007f37ac4440b9 in QV8Engine::~QV8Engine() () at /lib64/libQt5Qml.so.5
#13 0x00007f37ac29b7b6 in QJSEngine::~QJSEngine() () at /lib64/libQt5Qml.so.5
#14 0x00007f37ac3af75d in QQmlEngine::~QQmlEngine() () at /lib64/libQt5Qml.so.5
#15 0x00007f37ac3af819 in QQmlEngine::~QQmlEngine() () at /lib64/libQt5Qml.so.5
#16 0x00007f37ada5025c in QObjectPrivate::deleteChildren() () at /lib64/libQt5Core.so.5
#17 0x00007f37aef3009b in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#18 0x00007f37b19a0df9 in QQuickWidget::~QQuickWidget() () at /lib64/libQt5QuickWidgets.so.5
#19 0x00007f37ada5025c in QObjectPrivate::deleteChildren() () at /lib64/libQt5Core.so.5
#20 0x00007f37aef3009b in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#21 0x00007f37aef30389 in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#22 0x00007f37ada5025c in QObjectPrivate::deleteChildren() () at /lib64/libQt5Core.so.5
#23 0x00007f37aef3009b in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#24 0x00007f37af07e379 in QStackedWidget::~QStackedWidget() () at /lib64/libQt5Widgets.so.5
#25 0x00007f37ada5025c in QObjectPrivate::deleteChildren() () at /lib64/libQt5Core.so.5
#26 0x00007f37aef3009b in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#27 0x00007f37af08b169 in QTabWidget::~QTabWidget() () at /lib64/libQt5Widgets.so.5
#28 0x00007f37ada5025c in QObjectPrivate::deleteChildren() () at /lib64/libQt5Core.so.5
#29 0x00007f37aef3009b in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#30 0x00007f374c74206e in ScreenLockerKcmForm::~ScreenLockerKcmForm() () at /usr/lib64/qt5/plugins/screenlocker_kcm.so
#31 0x00007f37ada5025c in QObjectPrivate::deleteChildren() () at /lib64/libQt5Core.so.5
#32 0x00007f37aef3009b in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#33 0x00007f37b05ce0bd in KCModule::~KCModule() () at /lib64/libKF5ConfigWidgets.so.5
#34 0x00007f374c74668b in ScreenLockerKcm::~ScreenLockerKcm() () at /usr/lib64/qt5/plugins/screenlocker_kcm.so
#35 0x00007f37b1518f44 in KCModuleProxy::deleteClient() () at /lib64/libKF5KCMUtils.so.5
#36 0x00007f37b1518fec in KCModuleProxy::~KCModuleProxy() () at /lib64/libKF5KCMUtils.so.5
#37 0x00007f37b15191a9 in KCModuleProxy::~KCModuleProxy() () at /lib64/libKF5KCMUtils.so.5
#38 0x00007f37ada5025c in QObjectPrivate::deleteChildren() () at /lib64/libQt5Core.so.5
#39 0x00007f37aef3009b in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#40 0x00007f37aef30389 in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#41 0x00007f37ada5025c in QObjectPrivate::deleteChildren() () at /lib64/libQt5Core.so.5
#42 0x00007f37aef3009b in QWidget::~QWidget() () at /lib64/libQt5Widgets.so.5
#43 0x00007f37af0a9529 in QScrollArea::~QScrollArea() () at /lib64/libQt5Widgets.so.5
#44 0x00007f37af4ea2fb in KPageWidgetItem::~KPageWidgetItem() () at /lib64/libKF5WidgetsAddons.so.5
#45 0x00007f37af4ea319 in KPageWidgetItem::~KPageWidgetItem() () at /lib64/libKF5WidgetsAddons.so.5
#46 0x00007f37af4ead5b in PageItem::~PageItem() () at /lib64/libKF5WidgetsAddons.so.5
#47 0x00007f37af4eb97e in KPageWidgetModel::removePage(KPageWidgetItem*) () at /lib64/libKF5WidgetsAddons.so.5
#48 0x00007f37b1754435 in ModuleView::closeModules() () at /lib64/libsystemsettingsview.so.3
#49 0x00007f37856d4dcd in ClassicMode::changeModule(QModelIndex const&) () at /usr/lib64/qt5/plugins/classic_mode.so
#50 0x00007f37ada49ae6 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#51 0x00007f37af137445 in QAbstractItemView::clicked(QModelIndex const&) () at /lib64/libQt5Widgets.so.5
#52 0x00007f37af13a9e3 in QAbstractItemView::mouseReleaseEvent(QMouseEvent*) () at /lib64/libQt5Widgets.so.5
#53 0x00007f37af184c5b in QTreeView::mouseReleaseEvent(QMouseEvent*) () at /lib64/libQt5Widgets.so.5
#54 0x00007f37aef34780 in QWidget::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#55 0x00007f37af01d0ae in QFrame::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#56 0x00007f37af144853 in QAbstractItemView::viewportEvent(QEvent*) () at /lib64/libQt5Widgets.so.5
#57 0x00007f37af1843cc in QTreeView::viewportEvent(QEvent*) () at /lib64/libQt5Widgets.so.5
#58 0x00007f37ada22592 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#59 0x00007f37aeeecea5 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#60 0x00007f37aeef552d in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#61 0x00007f37ada227aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#62 0x00007f37aeef3bbd in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /lib64/libQt5Widgets.so.5
#63 0x00007f37aef4ef06 in QWidgetWindow::handleMouseEvent(QMouseEvent*) () at /lib64/libQt5Widgets.so.5
#64 0x00007f37aef51963 in QWidgetWindow::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#65 0x00007f37aeeececc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#66 0x00007f37aeef4671 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#67 0x00007f37ada227aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#68 0x00007f37ae9e32b3 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /lib64/libQt5Gui.so.5
#69 0x00007f37ae9e4d85 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /lib64/libQt5Gui.so.5
#70 0x00007f37ae9c5c4b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Gui.so.5
#71 0x00007f379a47c750 in userEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5XcbQpa.so.5
#72 0x00007f37a5afce42 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#73 0x00007f37a5afd1c0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#74 0x00007f37a5afd26c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#75 0x00007f37ada7071f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#76 0x00007f37ada2173a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#77 0x00007f37ada2923c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#78 0x000055e5740f4230 in main ()

Possible duplicates by query: bug 373731, bug 373330, bug 373320, bug 373287, bug 373094.

Reported using DrKonqi