Bug 384409

Application: systemsettings5 (5.10.5)

Qt Version: 5.7.1
Frameworks Version: 5.36.0
Operating System: Linux 4.12.9-300.fc26.x86_64 x86_64
Distribution: "Fedora release 26 (Twenty Six)"

-- Information about the crash:
Went to System settings > Workspace theme. Switching through categories there leads to repeatable application crash for me.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9239ca28c0 (LWP 15455))]

Thread 6 (Thread 0x7f9203f9b700 (LWP 15467)):
#0  0x00007f924375bacd in poll () at /lib64/libc.so.6
#1  0x00007f923c5ba569 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f923c5ba67c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f9244572e6b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f924452360a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f924437b99a in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f9242f349b5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f924437fc9e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f924084136d in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9243767bbf in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f9214bcd700 (LWP 15466)):
#0  0x00007f924375bacd in poll () at /lib64/libc.so.6
#1  0x00007f923c5ba569 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f923c5ba67c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f9244572e6b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f924452360a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f924437b99a in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f9242f349b5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f924437fc9e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f924084136d in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9243767bbf in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f9217aac700 (LWP 15465)):
#0  0x00007f923c5b9e2c in g_main_context_check () at /lib64/libglib-2.0.so.0
#1  0x00007f923c5ba510 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f923c5ba67c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f9244572e6b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f924452360a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f924437b99a in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f9242f349b5 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f924437fc9e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f924084136d in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9243767bbf in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f9226305700 (LWP 15457)):
#0  0x00007f924375bacd in poll () at /lib64/libc.so.6
#1  0x00007f923c5ba569 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f923c5ba67c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f9244572e6b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f924452360a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f924437b99a in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f9244c6ea39 in QDBusConnectionManager::run() () at /lib64/libQt5DBus.so.5
#7  0x00007f924437fc9e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f924084136d in start_thread () at /lib64/libpthread.so.0
#9  0x00007f9243767bbf in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f922e948700 (LWP 15456)):
#0  0x00007f924375bacd in poll () at /lib64/libc.so.6
#1  0x00007f9240e81c97 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f9240e83a8a in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f923301cba9 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f924437fc9e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f924084136d in start_thread () at /lib64/libpthread.so.0
#6  0x00007f9243767bbf in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f9239ca28c0 (LWP 15455)):
[KCrash Handler]
#6  0x00007f924368d69b in raise () at /lib64/libc.so.6
#7  0x00007f924368f4a0 in abort () at /lib64/libc.so.6
#8  0x00007f924436e527 in  () at /lib64/libQt5Core.so.5
#9  0x00007f924515de7b in  () at /lib64/libKF5Service.so.5
#10 0x00007f924518aca7 in KPluginInfo::pluginName() const () at /lib64/libKF5Service.so.5
#11 0x00007f920c379b5d in KCMSplashScreen::load() () at /usr/lib64/qt5/plugins/kcms/kcm_splashscreen.so
#12 0x00007f924454c8da in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#13 0x00007f9245a390db in QWidget::event(QEvent*) () at /lib64/libQt5Widgets.so.5
#14 0x00007f92459f25dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#15 0x00007f92459f9c74 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#16 0x00007f9244524627 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#17 0x00007f924452685b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#18 0x00007f9244572dd3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#19 0x00007f923c5ba247 in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#20 0x00007f923c5ba5e8 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#21 0x00007f923c5ba67c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#22 0x00007f9244572e4f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#23 0x00007f924452360a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#24 0x00007f924452b27c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#25 0x000055ec4aa4160a in main ()

Reported using DrKonqi