Bug 395784

Application: systemsettings5 (5.13.1)

Qt Version: 5.11.1
Frameworks Version: 5.47.0
Operating System: Linux 4.16.13-2-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed: hitting the back button on the app after changing a setting, does this almost everytime dispite the setting I'm changing...

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb5c0e6e840 (LWP 4133))]

Thread 2 (Thread 0x7fb5a42c8700 (LWP 4162)):
#0  0x00007fb5b57812d9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fb5b57398b6 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007fb5b573a44e in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fb5b573a63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fb5bcdd1054 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fb5bcd7c94c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fb5bcbc5a99 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fb5bd221976 in  () at /usr/lib/libQt5DBus.so.5
#8  0x00007fb5bcbcfb45 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fb5b7d9c075 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fb5bc4bf53f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fb5c0e6e840 (LWP 4133)):
[KCrash Handler]
#6  0x000000000000ab90 in  ()
#7  0x00007fb5c0cd310a in call_init.part () at /lib64/ld-linux-x86-64.so.2
#8  0x00007fb5c0cd3206 in _dl_init () at /lib64/ld-linux-x86-64.so.2
#9  0x00007fb5c0cd7273 in dl_open_worker () at /lib64/ld-linux-x86-64.so.2
#10 0x00007fb5bc4fa94f in _dl_catch_exception () at /usr/lib/libc.so.6
#11 0x00007fb5c0cd6b48 in _dl_open () at /lib64/ld-linux-x86-64.so.2
#12 0x00007fb5b5a05e66 in  () at /usr/lib/libdl.so.2
#13 0x00007fb5bc4fa94f in _dl_catch_exception () at /usr/lib/libc.so.6
#14 0x00007fb5bc4fa9df in _dl_catch_error () at /usr/lib/libc.so.6
#15 0x00007fb5b5a06597 in  () at /usr/lib/libdl.so.2
#16 0x00007fb5b5a05f06 in dlopen () at /usr/lib/libdl.so.2
#17 0x00007fb59702b8f1 in  () at /usr/lib/libvlccore.so.9
#18 0x00007fb596fa1d8d in  () at /usr/lib/libvlccore.so.9
#19 0x00007fb596fa1c29 in  () at /usr/lib/libvlccore.so.9
#20 0x00007fb596fa211d in  () at /usr/lib/libvlccore.so.9
#21 0x00007fb596fa2728 in  () at /usr/lib/libvlccore.so.9
#22 0x00007fb596f8a53a in libvlc_InternalInit () at /usr/lib/libvlccore.so.9
#23 0x00007fb596d566ac in libvlc_new () at /usr/lib/libvlc.so.5
#24 0x00007fb5972c92ea in  () at /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#25 0x00007fb59729c10c in  () at /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#26 0x00007fb5972cdbfa in qt_plugin_instance () at /usr/lib/qt5/plugins/phonon4qt5_backend/phonon_vlc.so
#27 0x00007fb5bcd6827b in QPluginLoader::instance() () at /usr/lib/libQt5Core.so.5
#28 0x00007fb5a69128f1 in  () at /usr/lib/libphonon4qt5.so.4
#29 0x00007fb5a6914514 in  () at /usr/lib/libphonon4qt5.so.4
#30 0x00007fb5a69149b1 in  () at /usr/lib/libphonon4qt5.so.4
#31 0x00007fb5a6915364 in Phonon::Factory::backend(bool) () at /usr/lib/libphonon4qt5.so.4
#32 0x00007fb5a69158f4 in  () at /usr/lib/libphonon4qt5.so.4
#33 0x00007fb5a690a9c2 in  () at /usr/lib/libphonon4qt5.so.4
#34 0x00007fb5a6907def in  () at /usr/lib/libphonon4qt5.so.4
#35 0x00007fb5a7b0b871 in  () at /usr/lib/libKF5Notifications.so.5
#36 0x00007fb5a7ae4ca9 in  () at /usr/lib/libKF5Notifications.so.5
#37 0x00007fb5a7ae1336 in KNotification::sendEvent() () at /usr/lib/libKF5Notifications.so.5
#38 0x00007fb5bcda83d2 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#39 0x00007fb5bdd81a74 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#40 0x00007fb5bdd89341 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#41 0x00007fb5bcd7dcb9 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#42 0x00007fb5bcd80d4c in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#43 0x00007fb5bcdd1a54 in  () at /usr/lib/libQt5Core.so.5
#44 0x00007fb5b573a368 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#45 0x00007fb5b573a5b1 in  () at /usr/lib/libglib-2.0.so.0
#46 0x00007fb5b573a63e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#47 0x00007fb5bcdd1039 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#48 0x00007fb5afd95722 in  () at /usr/lib/libQt5XcbQpa.so.5
#49 0x00007fb5bcd7c94c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#50 0x00007fb5bdf7746e in QDialog::exec() () at /usr/lib/libQt5Widgets.so.5
#51 0x00007fb5bf394fa6 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
#52 0x00007fb5bf39543d 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
#53 0x00007fb5bf39799e in  () at /usr/lib/libKF5WidgetsAddons.so.5
#54 0x00007fb5bf397d16 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
#55 0x00007fb5c0ab9e0f in ModuleView::resolveChanges(KCModuleProxy*) () at /usr/lib/libsystemsettingsview.so.3
#56 0x00007fb5999a2a92 in  () at /usr/lib/qt/plugins/icon_mode.so
#57 0x00007fb5bcda7afc in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#58 0x00007fb5bdd7b273 in QAction::triggered(bool) () at /usr/lib/libQt5Widgets.so.5
#59 0x00007fb5bdd7d96a in QAction::activate(QAction::ActionEvent) () at /usr/lib/libQt5Widgets.so.5
#60 0x00007fb5bde6dabe in  () at /usr/lib/libQt5Widgets.so.5
#61 0x00007fb5bde6dcf6 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#62 0x00007fb5bdf5d27b in QToolButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#63 0x00007fb5bddc12b8 in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#64 0x00007fb5bdf5d324 in QToolButton::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#65 0x00007fb5bdd81a74 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#66 0x00007fb5bdd8958a in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#67 0x00007fb5bcd7dcb9 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#68 0x00007fb5bdd88871 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib/libQt5Widgets.so.5
#69 0x00007fb5bdddc5ec in  () at /usr/lib/libQt5Widgets.so.5
#70 0x00007fb5bdddf235 in  () at /usr/lib/libQt5Widgets.so.5
#71 0x00007fb5bdd81a74 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#72 0x00007fb5bdd89341 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#73 0x00007fb5bcd7dcb9 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#74 0x00007fb5bd5b3e34 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/libQt5Gui.so.5
#75 0x00007fb5bd5b5df6 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#76 0x00007fb5bd58fb7c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#77 0x00007fb5afd9572d in  () at /usr/lib/libQt5XcbQpa.so.5
#78 0x00007fb5bcd7c94c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#79 0x00007fb5bcd84c46 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#80 0x000055da1d4f6e5f in  ()
#81 0x00007fb5bc3ea06b in __libc_start_main () at /usr/lib/libc.so.6
#82 0x000055da1d4f6eea in _start ()

Reported using DrKonqi