Application: systemsettings5 (5.8.5)
 (Compiled from sources)
Qt Version: 5.7.1
Frameworks Version: 5.29.0
Operating System: Linux 4.8.13-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
searching for lock and then click on desktop behavior and then screen locking, after closing the system setting it crashed, it happen usually in the other system setting parts
- Custom settings of the application:
Change the lock screen shortkey

The crash can be reproduced sometimes.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fedbf5ab1c0 (LWP 26932))]

Thread 3 (Thread 0x7feda36a4700 (LWP 26935)):
#0  0x00007fedbb2d948d in poll () from /usr/lib/libc.so.6
#1  0x00007fedb56bc786 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007fedb56bc89c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007fedbbbfc2db in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007fedbbba5d3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007fedbb9c8063 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007fedbc511de5 in ?? () from /usr/lib/libQt5DBus.so.5
#7  0x00007fedbb9cccf8 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007fedb73a7454 in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007fedbb2e27df in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7fedabd08700 (LWP 26934)):
#0  0x00007fedbb2d948d in poll () from /usr/lib/libc.so.6
#1  0x00007fedb7c2a8e0 in ?? () from /usr/lib/libxcb.so.1
#2  0x00007fedb7c2c679 in xcb_wait_for_event () from /usr/lib/libxcb.so.1
#3  0x00007fedade5a789 in ?? () from /usr/lib/libQt5XcbQpa.so.5
#4  0x00007fedbb9cccf8 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x00007fedb73a7454 in start_thread () from /usr/lib/libpthread.so.0
#6  0x00007fedbb2e27df in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7fedbf5ab1c0 (LWP 26932)):
[KCrash Handler]
#6  0x00007fedb9bed395 in QV4::WeakValue::free() () from /usr/lib/libQt5Qml.so.5
#7  0x00007fedb9c5de42 in QV4::QObjectWrapper::destroyObject(bool) () from /usr/lib/libQt5Qml.so.5
#8  0x00007fedb9af463f in QV4::MemoryManager::sweep(bool) () from /usr/lib/libQt5Qml.so.5
#9  0x00007fedb9af5a4c in QV4::MemoryManager::~MemoryManager() () from /usr/lib/libQt5Qml.so.5
#10 0x00007fedb9bdcf6b in QV4::ExecutionEngine::~ExecutionEngine() () from /usr/lib/libQt5Qml.so.5
#11 0x00007fedb9d1d926 in QV8Engine::~QV8Engine() () from /usr/lib/libQt5Qml.so.5
#12 0x00007fedb9d1da49 in QV8Engine::~QV8Engine() () from /usr/lib/libQt5Qml.so.5
#13 0x00007fedb9b74216 in QJSEngine::~QJSEngine() () from /usr/lib/libQt5Qml.so.5
#14 0x00007fedb9c880bd in QQmlEngine::~QQmlEngine() () from /usr/lib/libQt5Qml.so.5
#15 0x00007fedb9c88179 in QQmlEngine::~QQmlEngine() () from /usr/lib/libQt5Qml.so.5
#16 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#17 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#18 0x00007fedba84b839 in QQuickWidget::~QQuickWidget() () from /usr/lib/libQt5QuickWidgets.so.5
#19 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#20 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#21 0x00007fedbd7735f9 in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#22 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#23 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#24 0x00007fedbd8c0f69 in QStackedWidget::~QStackedWidget() () from /usr/lib/libQt5Widgets.so.5
#25 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#26 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#27 0x00007fedbd8cdd39 in QTabWidget::~QTabWidget() () from /usr/lib/libQt5Widgets.so.5
#28 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#29 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#30 0x00007fed8de4cd6e in ?? () from /usr/lib/qt/plugins/screenlocker_kcm.so
#31 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#32 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#33 0x00007fed8de5188b in ?? () from /usr/lib/qt/plugins/screenlocker_kcm.so
#34 0x00007fedbf03c004 in KCModuleProxy::deleteClient() () from /usr/lib/libKF5KCMUtils.so.5
#35 0x00007fedbf03c51c in KCModuleProxy::~KCModuleProxy() () from /usr/lib/libKF5KCMUtils.so.5
#36 0x00007fedbf03c6d9 in KCModuleProxy::~KCModuleProxy() () from /usr/lib/libKF5KCMUtils.so.5
#37 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#38 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#39 0x00007fedbd7735f9 in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#40 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#41 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#42 0x00007fedbd8ebfd9 in QScrollArea::~QScrollArea() () from /usr/lib/libQt5Widgets.so.5
#43 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#44 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#45 0x00007fedbdf39bae in ?? () from /usr/lib/libKF5WidgetsAddons.so.5
#46 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#47 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#48 0x00007fedbdf3e4c9 in KPageWidget::~KPageWidget() () from /usr/lib/libKF5WidgetsAddons.so.5
#49 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#50 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#51 0x00007fedbf27d859 in ModuleView::~ModuleView() () from /usr/lib/libsystemsettingsview.so.3
#52 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#53 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#54 0x00007fedbd8c0f69 in QStackedWidget::~QStackedWidget() () from /usr/lib/libQt5Widgets.so.5
#55 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#56 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#57 0x00007fedbd8c0f69 in QStackedWidget::~QStackedWidget() () from /usr/lib/libQt5Widgets.so.5
#58 0x00007fedbbbd1831 in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#59 0x00007fedbd77330b in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#60 0x00007fedbed7c4ce in KMainWindow::~KMainWindow() () from /usr/lib/libKF5XmlGui.so.5
#61 0x000000000040ed87 in ?? ()
#62 0x000000000040edf9 in ?? ()
#63 0x00007fedbbbd3f60 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#64 0x00007fedbd777bab in QWidget::event(QEvent*) () from /usr/lib/libQt5Widgets.so.5
#65 0x00007fedbd876d4b in QMainWindow::event(QEvent*) () from /usr/lib/libQt5Widgets.so.5
#66 0x00007fedbed7f00a in KMainWindow::event(QEvent*) () from /usr/lib/libKF5XmlGui.so.5
#67 0x00007fedbedd0a85 in KXmlGuiWindow::event(QEvent*) () from /usr/lib/libKF5XmlGui.so.5
#68 0x00007fedbd73035c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#69 0x00007fedbd737ad1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#70 0x00007fedbbba78e0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#71 0x00007fedbbbaa06d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#72 0x00007fedbbbfbeb3 in ?? () from /usr/lib/libQt5Core.so.5
#73 0x00007fedb56bc587 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#74 0x00007fedb56bc7f0 in ?? () from /usr/lib/libglib-2.0.so.0
#75 0x00007fedb56bc89c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#76 0x00007fedbbbfc2bf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#77 0x00007fedbbba5d3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#78 0x00007fedbbbae23c in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#79 0x000000000040c0b0 in ?? ()
#80 0x00007fedbb21a291 in __libc_start_main () from /usr/lib/libc.so.6
#81 0x000000000040c12a in _start ()

Possible duplicates by query: bug 374295, bug 374271, bug 374150, bug 374115, bug 373873.

Reported using DrKonqi