Application: systemsettings5 (5.8.2)

Qt Version: 5.7.0
Frameworks Version: 5.27.0
Operating System: Linux 4.8.4-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed: Clicked on return to main system settings page from sub-page (ie, returning from "look and feel" to "system settings"

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 0x7f530e2b7180 (LWP 19690))]

Thread 9 (Thread 0x7f52ccdbc700 (LWP 19703)):
#0  0x00007f5309fd248d in poll () at /usr/lib/libc.so.6
#1  0x00007f53043c1786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f53043c189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f530a8f472b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f530a89e23a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f530a6c10f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5308a182d5 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f530a6c5d78 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f53060a6454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5309fdb7df in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f52cd7cc700 (LWP 19702)):
#0  0x00007f5309fce4ed in read () at /usr/lib/libc.so.6
#1  0x00007f5304405a10 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f53043c1235 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f53043c1724 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f53043c1b12 in g_main_loop_run () at /usr/lib/libglib-2.0.so.0
#5  0x00007f52d487d316 in  () at /usr/lib/libgio-2.0.so.0
#6  0x00007f53043e90d5 in  () at /usr/lib/libglib-2.0.so.0
#7  0x00007f53060a6454 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f5309fdb7df in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f52cdfcd700 (LWP 19701)):
#0  0x00007f5309fce4ed in read () at /usr/lib/libc.so.6
#1  0x00007f5304405a10 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f53043c1235 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f53043c1724 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f53043c189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f53043c18e1 in  () at /usr/lib/libglib-2.0.so.0
#6  0x00007f53043e90d5 in  () at /usr/lib/libglib-2.0.so.0
#7  0x00007f53060a6454 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f5309fdb7df in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f52ddfe5700 (LWP 19698)):
#0  0x00007f5309fd248d in poll () at /usr/lib/libc.so.6
#1  0x00007f53043c1786 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f53043c189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f530a8f472b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f530a89e23a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f530a6c10f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f5308a182d5 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f530a6c5d78 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f53060a6454 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f5309fdb7df in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f52defe6700 (LWP 19697)):
#0  0x00007f5304406dd4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f53043c1171 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#2  0x00007f53043c1724 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f53043c189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f530a8f472b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f530a89e23a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f530a6c10f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f5308a182d5 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f530a6c5d78 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f53060a6454 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f5309fdb7df in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f52e82d1700 (LWP 19695)):
#0  0x00007f5309fce4ed in read () at /usr/lib/libc.so.6
#1  0x00007f5304405a10 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f53043c1235 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f53043c1724 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f53043c189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f530a8f472b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f530a89e23a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f530a6c10f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f5308a182d5 in  () at /usr/lib/libQt5Qml.so.5
#9  0x00007f530a6c5d78 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f53060a6454 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f5309fdb7df in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f52f226b700 (LWP 19693)):
#0  0x00007f53043c170d in  () at /usr/lib/libglib-2.0.so.0
#1  0x00007f53043c189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#2  0x00007f530a8f472b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f530a89e23a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f530a6c10f3 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f530b208e55 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007f530a6c5d78 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f53060a6454 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f5309fdb7df in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f52fabc7700 (LWP 19692)):
#0  0x00007f5309fd248d in poll () at /usr/lib/libc.so.6
#1  0x00007f53069298e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f530692b679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f52fcd19449 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f530a6c5d78 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f53060a6454 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f5309fdb7df in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f530e2b7180 (LWP 19690)):
[KCrash Handler]
#6  0x00007f52b8e4eb94 in  () at /usr/lib/libQtGui.so.4
#7  0x00007f530e18f4fa in call_init.part () at /lib64/ld-linux-x86-64.so.2
#8  0x00007f530e18f60b in _dl_init () at /lib64/ld-linux-x86-64.so.2
#9  0x00007f530e193b38 in dl_open_worker () at /lib64/ld-linux-x86-64.so.2
#10 0x00007f530e18f3a4 in _dl_catch_error () at /lib64/ld-linux-x86-64.so.2
#11 0x00007f530e1932d9 in _dl_open () at /lib64/ld-linux-x86-64.so.2
#12 0x00007f530468aee9 in  () at /usr/lib/libdl.so.2
#13 0x00007f530e18f3a4 in _dl_catch_error () at /lib64/ld-linux-x86-64.so.2
#14 0x00007f530468b521 in  () at /usr/lib/libdl.so.2
#15 0x00007f530468af82 in dlopen () at /usr/lib/libdl.so.2
#16 0x00007f52bf34dbb0 in  () at /usr/lib/libvlccore.so.8
#17 0x00007f52bf331ebb in  () at /usr/lib/libvlccore.so.8
#18 0x00007f52bf3321e8 in  () at /usr/lib/libvlccore.so.8
#19 0x00007f52bf332144 in  () at /usr/lib/libvlccore.so.8
#20 0x00007f52bf3326c4 in  () at /usr/lib/libvlccore.so.8
#21 0x00007f52bf332cca in  () at /usr/lib/libvlccore.so.8
#22 0x00007f52bf2b8eb1 in libvlc_InternalInit () at /usr/lib/libvlccore.so.8
#23 0x00007f52bf089cee in libvlc_new () at /usr/lib/libvlc.so.5
#24 0x00007f52bf5ea2c8 in  () at /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#25 0x00007f52bf5bf586 in  () at /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#26 0x00007f52bf5ee195 in qt_plugin_instance () at /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#27 0x00007f530a888cdb in QPluginLoader::instance() () at /usr/lib/libQt5Core.so.5
#28 0x00007f52f87c8180 in  () at /usr/lib/libphonon4qt5.so.4
#29 0x00007f52f87caada in  () at /usr/lib/libphonon4qt5.so.4
#30 0x00007f52f87cb179 in  () at /usr/lib/libphonon4qt5.so.4
#31 0x00007f52f87cbaa4 in Phonon::Factory::backend(bool) () at /usr/lib/libphonon4qt5.so.4
#32 0x00007f52f87cc339 in  () at /usr/lib/libphonon4qt5.so.4
#33 0x00007f52f87c0031 in  () at /usr/lib/libphonon4qt5.so.4
#34 0x00007f52f96767e0 in  () at /usr/lib/libKF5Notifications.so.5
#35 0x00007f52f96551c0 in  () at /usr/lib/libKF5Notifications.so.5
#36 0x00007f52f9651490 in KNotification::sendEvent() () at /usr/lib/libKF5Notifications.so.5
#37 0x00007f530a8cc4b9 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#38 0x00007f530c42de0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#39 0x00007f530c435581 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#40 0x00007f530a89fde0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#41 0x00007f530a8a256d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#42 0x00007f530a8f4303 in  () at /usr/lib/libQt5Core.so.5
#43 0x00007f53043c1587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#44 0x00007f53043c17f0 in  () at /usr/lib/libglib-2.0.so.0
#45 0x00007f53043c189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#46 0x00007f530a8f470f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#47 0x00007f530a89e23a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#48 0x00007f530c61a6b7 in QDialog::exec() () at /usr/lib/libQt5Widgets.so.5
#49 0x00007f530cbfc85b in KMessageBox::createKMessageBox(QDialog*, QDialogButtonBox*, QIcon const&, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&, QMessageBox::Icon) () at /usr/lib/libKF5WidgetsAddons.so.5
#50 0x00007f530cbfd34c in KMessageBox::createKMessageBox(QDialog*, QDialogButtonBox*, QMessageBox::Icon, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&) () at /usr/lib/libKF5WidgetsAddons.so.5
#51 0x00007f530cbffe31 in  () at /usr/lib/libKF5WidgetsAddons.so.5
#52 0x00007f530cc00205 in KMessageBox::warningYesNoCancel(QWidget*, QString const&, QString const&, KGuiItem const&, KGuiItem const&, KGuiItem const&, QString const&, QFlags<KMessageBox::Option>) () at /usr/lib/libKF5WidgetsAddons.so.5
#53 0x00007f530df76ba0 in ModuleView::resolveChanges(KCModuleProxy*) () at /usr/lib/libsystemsettingsview.so.3
#54 0x00007f52ead712a1 in  () at /usr/lib/qt/plugins/icon_mode.so
#55 0x00007f530a8cb659 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#56 0x00007f530c427442 in QAction::triggered(bool) () at /usr/lib/libQt5Widgets.so.5
#57 0x00007f530c429e30 in QAction::activate(QAction::ActionEvent) () at /usr/lib/libQt5Widgets.so.5
#58 0x00007f530c5166ed in  () at /usr/lib/libQt5Widgets.so.5
#59 0x00007f530c516924 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#60 0x00007f530c5e229a in QToolButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#61 0x00007f530c474ef8 in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#62 0x00007f530c5e2379 in QToolButton::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#63 0x00007f530c42de0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#64 0x00007f530c43643d in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#65 0x00007f530a89fde0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#66 0x00007f530c434aed in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib/libQt5Widgets.so.5
#67 0x00007f530c48efa0 in  () at /usr/lib/libQt5Widgets.so.5
#68 0x00007f530c491743 in  () at /usr/lib/libQt5Widgets.so.5
#69 0x00007f530c42de0c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#70 0x00007f530c435581 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#71 0x00007f530a89fde0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#72 0x00007f530bc9c303 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/libQt5Gui.so.5
#73 0x00007f530bc9de85 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#74 0x00007f530bc7bcab in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#75 0x00007f52fcd4f2f0 in  () at /usr/lib/libQt5XcbQpa.so.5
#76 0x00007f53043c1587 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#77 0x00007f53043c17f0 in  () at /usr/lib/libglib-2.0.so.0
#78 0x00007f53043c189c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#79 0x00007f530a8f470f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#80 0x00007f530a89e23a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#81 0x00007f530a8a673c in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#82 0x000000000040c0b0 in  ()
#83 0x00007f5309f13291 in __libc_start_main () at /usr/lib/libc.so.6
#84 0x000000000040c12a in _start ()

Reported using DrKonqi