Bug 373330

Application: systemsettings5 (5.8.2)

Qt Version: 5.7.1
Frameworks Version: 5.27.0
Operating System: Linux 4.8.0-1-amd64 x86_64
Distribution: Debian GNU/Linux testing (stretch)

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

Opened the application, opened application style section, gone to window decorations tab and clicked on the back buttom. Then, in the most cases, a segmentation fault occures.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Systemeinstellungen (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa900c185c0 (LWP 19442))]

Thread 4 (Thread 0x7fa8d8895700 (LWP 19448)):
#0  0x00007fa8fd32b56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa8f86299f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa8f8629b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa8fdc496fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa8fdbf307a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa8fda150d3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa8fc39b5d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa8fda19d88 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa8fa537464 in start_thread (arg=0x7fa8d8895700) at pthread_create.c:333
#9  0x00007fa8fd3349df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7fa8e6be3700 (LWP 19445)):
#0  0x00007fa8fd3275dd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa8f866dc40 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa8f86294be in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa8f8629994 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa8f8629b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa8fdc496fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa8fdbf307a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa8fda150d3 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa900d6b6d5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007fa8fda19d88 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa8fa537464 in start_thread (arg=0x7fa8e6be3700) at pthread_create.c:333
#11 0x00007fa8fd3349df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7fa8ef685700 (LWP 19444)):
#0  0x00007fa8fd32b56d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa8fadb1150 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fa8fadb2ee9 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fa8f1be4b69 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fa8fda19d88 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa8fa537464 in start_thread (arg=0x7fa8ef685700) at pthread_create.c:333
#6  0x00007fa8fd3349df in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7fa900c185c0 (LWP 19442)):
[KCrash Handler]
#6  0x00007fa8fc26dd85 in QV4::WeakValue::free() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa8fc2dea82 in QV4::QObjectWrapper::destroyObject(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa8fc174dbf in QV4::MemoryManager::sweep(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fa8fc1761cc in QV4::MemoryManager::~MemoryManager() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fa8fc25d69b in QV4::ExecutionEngine::~ExecutionEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007fa8fc39d086 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007fa8fc39d1a9 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007fa8fc1f49a6 in QJSEngine::~QJSEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007fa8fc30890d in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007fa8fc3089c9 in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fa8fdc1f4b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fa8fdc2882f in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fa8fc669084 in QQuickWindow::~QQuickWindow() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007fa8fc718c19 in QQuickView::~QQuickView() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007fa8ff143a55 in QWindowContainer::~QWindowContainer() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fa8ff143a79 in QWindowContainer::~QWindowContainer() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007fa8fdc1f4b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fa8ff121b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007fa8ff121e19 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007fa8fdc1f4b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fa8ff121b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007fa8ff121e19 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fa8fdc1f4b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fa8ff121b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007fa8ff26f609 in QStackedWidget::~QStackedWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007fa8fdc1f4b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fa8ff121b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007fa8ff27c3d9 in QTabWidget::~QTabWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007fa8fdc1f4b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007fa8ff121b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007fa8dc4140be in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_kwindecoration.so
#37 0x00007fa8fdc1f4b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007fa8ff121b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00007fa8ffdc72dd in KCModule::~KCModule() () from /usr/lib/x86_64-linux-gnu/libKF5ConfigWidgets.so.5
#40 0x00007fa8dc410981 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_kwindecoration.so
#41 0x00007fa9007ad074 in KCModuleProxy::deleteClient() () from /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#42 0x00007fa9007ad11c in KCModuleProxy::~KCModuleProxy() () from /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#43 0x00007fa9007ad2d9 in KCModuleProxy::~KCModuleProxy() () from /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#44 0x00007fa8fdc1f4b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007fa8ff121b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007fa8ff121e19 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007fa8fdc1f4b1 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007fa8ff121b2b in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007fa8ff29a679 in QScrollArea::~QScrollArea() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#50 0x00007fa8ff6de66f in KPageWidgetItem::~KPageWidgetItem() () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#51 0x00007fa8ff6de719 in KPageWidgetItem::~KPageWidgetItem() () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#52 0x00007fa8ff6df1bb in ?? () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#53 0x00007fa8ff6dfdde in KPageWidgetModel::removePage(KPageWidgetItem*) () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#54 0x00007fa9009e8ac5 in ModuleView::closeModules() () from /usr/lib/x86_64-linux-gnu/libsystemsettingsview.so.3
#55 0x00007fa8dd6be2ce in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/icon_mode.so
#56 0x00007fa8fdc20c89 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#57 0x00007fa8ff0d8162 in QAction::triggered(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#58 0x00007fa8ff0dab50 in QAction::activate(QAction::ActionEvent) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#59 0x00007fa8ff1c873d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#60 0x00007fa8ff1c8974 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#61 0x00007fa8ff294a1a in QToolButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#62 0x00007fa8ff1261d8 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#63 0x00007fa8ff294af9 in QToolButton::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#64 0x00007fa8ff0deb2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#65 0x00007fa8ff0e719d in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#66 0x00007fa8fdbf5090 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#67 0x00007fa8ff0e584d in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#68 0x00007fa8ff140866 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#69 0x00007fa8ff143273 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#70 0x00007fa8ff0deb2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#71 0x00007fa8ff0e62e1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#72 0x00007fa8fdbf5090 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#73 0x00007fa8feb43b03 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#74 0x00007fa8feb45685 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#75 0x00007fa8feb2361b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#76 0x00007fa8f1c1b4e0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#77 0x00007fa8f86297f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007fa8f8629a60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#79 0x00007fa8f8629b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#80 0x00007fa8fdc496df in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#81 0x00007fa8fdbf307a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#82 0x00007fa8fdbfb7ec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#83 0x000000000040c0d3 in ?? ()
#84 0x00007fa8fd26c2b1 in __libc_start_main (main=0x40bcd0, argc=1, argv=0x7fff921513d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff921513c8) at ../csu/libc-start.c:291
#85 0x000000000040c14a in _start ()

Possible duplicates by query: bug 373320, bug 373287, bug 373094, bug 372968, bug 372626.

Reported using DrKonqi