Application: systemsettings5 (5.9.1)

Qt Version: 5.7.1
Frameworks Version: 5.30.0
Operating System: Linux 4.4.0-62-generic x86_64
Distribution: KDE neon User Edition 5.9

-- Information about the crash:
I had selected "get new decorations"
Selected none, just closed it, and then clicked back to get back to system 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 0x7fb30b5908c0 (LWP 1870))]

Thread 4 (Thread 0x7fb2dd7d8700 (LWP 1878)):
#0  0x00007fb307cbdb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb302e1338c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb302e1349c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb3085dd75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb3085880ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb3083b7f64 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb306d14bf5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fb3083bcb48 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb304ece6ba in start_thread (arg=0x7fb2dd7d8700) at pthread_create.c:333
#9  0x00007fb307cc982d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fb2f19ea700 (LWP 1873)):
#0  0x00007fb307cbdb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb302e1338c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb302e1349c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb3085dd75b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb3085880ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb3083b7f64 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb30b6e7735 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fb3083bcb48 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb304ece6ba in start_thread (arg=0x7fb2f19ea700) at pthread_create.c:333
#9  0x00007fb307cc982d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fb2f9fbc700 (LWP 1872)):
#0  0x00007fb307cbdb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fb305744c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fb3057468d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fb2fc514d79 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fb3083bcb48 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb304ece6ba in start_thread (arg=0x7fb2f9fbc700) at pthread_create.c:333
#6  0x00007fb307cc982d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fb30b5908c0 (LWP 1870)):
[KCrash Handler]
#6  0x00007fb306bef025 in QV4::WeakValue::free() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fb306c5bcd9 in QV4::QObjectWrapper::destroyObject(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fb306af574c in QV4::MemoryManager::sweep(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fb306af728c in QV4::MemoryManager::~MemoryManager() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fb306bdf6f2 in QV4::ExecutionEngine::~ExecutionEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007fb306d16648 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007fb306d16769 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007fb306b74686 in QJSEngine::~QJSEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007fb306c85265 in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#15 0x00007fb306c85319 in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fb3085b3663 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fb3085bc814 in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fb306fe2454 in QQuickWindow::~QQuickWindow() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007fb307091e89 in QQuickView::~QQuickView() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007fb309ac93d5 in QWindowContainer::~QWindowContainer() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fb309ac93f9 in QWindowContainer::~QWindowContainer() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007fb3085b3663 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fb309aa78e4 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007fb309aa7bb9 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007fb3085b3663 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fb309aa78e4 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007fb309aa7bb9 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fb3085b3663 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fb309aa78e4 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007fb309bf3769 in QStackedWidget::~QStackedWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007fb3085b3663 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fb309aa78e4 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007fb309c002f9 in QTabWidget::~QTabWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007fb3085b3663 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007fb309aa78e4 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007fb2e56d00de in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_kwindecoration.so
#37 0x00007fb3085b3663 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007fb309aa78e4 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00007fb30a73fafd in KCModule::~KCModule() () from /usr/lib/x86_64-linux-gnu/libKF5ConfigWidgets.so.5
#40 0x00007fb2e56cc9a1 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_kwindecoration.so
#41 0x00007fb30b11d2b4 in KCModuleProxy::deleteClient() () from /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#42 0x00007fb30b11d35a in KCModuleProxy::~KCModuleProxy() () from /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#43 0x00007fb30b11d4f9 in KCModuleProxy::~KCModuleProxy() () from /usr/lib/x86_64-linux-gnu/libKF5KCMUtils.so.5
#44 0x00007fb3085b3663 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007fb309aa78e4 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007fb309aa7bb9 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007fb3085b3663 in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007fb309aa78e4 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007fb309c1e319 in QScrollArea::~QScrollArea() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#50 0x00007fb30a05a183 in KPageWidgetItem::~KPageWidgetItem() () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#51 0x00007fb30a05a259 in KPageWidgetItem::~KPageWidgetItem() () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#52 0x00007fb30a05acab in ?? () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#53 0x00007fb30a05b8ce in KPageWidgetModel::removePage(KPageWidgetItem*) () from /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#54 0x00007fb30b3575d5 in ModuleView::closeModules() () from /usr/lib/x86_64-linux-gnu/libsystemsettingsview.so.3
#55 0x00007fb2e79ed2ce in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/icon_mode.so
#56 0x00007fb3085b4e89 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#57 0x00007fb309a5e552 in QAction::triggered(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#58 0x00007fb309a60ec0 in QAction::activate(QAction::ActionEvent) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#59 0x00007fb309b4d9b0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#60 0x00007fb309b4dae4 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#61 0x00007fb309c1875a in QToolButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#62 0x00007fb309aabf38 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#63 0x00007fb309c18839 in QToolButton::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#64 0x00007fb309a64ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#65 0x00007fb309a6d165 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#66 0x00007fb30858a0c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#67 0x00007fb309a6be8f in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#68 0x00007fb309ac6236 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#69 0x00007fb309ac8c83 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#70 0x00007fb309a64ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#71 0x00007fb309a6c8c6 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#72 0x00007fb30858a0c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#73 0x00007fb3094c95a0 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#74 0x00007fb3094cb4a5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#75 0x00007fb3094a932b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#76 0x00007fb2fc54b270 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#77 0x00007fb302e13197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007fb302e133f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#79 0x00007fb302e1349c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#80 0x00007fb3085dd73f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#81 0x00007fb3085880ba in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#82 0x00007fb3085906cc in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#83 0x000000000040c2a0 in ?? ()
#84 0x00007fb307be3830 in __libc_start_main (main=0x40beb0, argc=1, argv=0x7ffd32b2eff8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd32b2efe8) at ../csu/libc-start.c:291
#85 0x000000000040c319 in _start ()

Possible duplicates by query: bug 376358, bug 376323, bug 376171, bug 376166, bug 376152.

Reported using DrKonqi