Application: systemsettings5 (5.10.5)
 (Compiled from sources)
Qt Version: 5.9.2
Frameworks Version: 5.38.0
Operating System: Linux 4.8.15-1 x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
- What I was doing when the application crashed:
Trying to adjust qtcurve theme settings.
- Unusual behavior I noticed:
Clicking the "Configure" button crashes System Settings
- Custom settings of the application:
Base installation from Funtoo sources.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff5cafa5740 (LWP 15724))]

Thread 3 (Thread 0x7ff5bf6ae700 (LWP 15726)):
#0  0x00007ff5d497632d in poll () from /lib64/libc.so.6
#1  0x00007ff5cfea6e64 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ff5cfea6f6c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff5d522c8cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007ff5d51dec6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007ff5d504c9cc in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007ff5d82479f5 in ?? () from /usr/lib64/libQt5DBus.so.5
#7  0x00007ff5d5050992 in ?? () from /usr/lib64/libQt5Core.so.5
#8  0x00007ff5d1df16f4 in start_thread () from /lib64/libpthread.so.0
#9  0x00007ff5d497f3cd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7ff5c81a8700 (LWP 15725)):
#0  0x00007ff5d497632d in poll () from /lib64/libc.so.6
#1  0x00007ff5d26677c2 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007ff5d26694d7 in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007ff5cad2f819 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007ff5d5050992 in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007ff5d1df16f4 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ff5d497f3cd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7ff5cafa5740 (LWP 15724)):
[KCrash Handler]
#6  0x00007ff5d61295e5 in QWindow::winId() const () from /usr/lib64/libQt5Gui.so.5
#7  0x00007ff5c6f37116 in ?? () from /usr/lib64/qt5/plugins/platformthemes/KDEPlasmaPlatformTheme.so
#8  0x00007ff5c6f376cd in ?? () from /usr/lib64/qt5/plugins/platformthemes/KDEPlasmaPlatformTheme.so
#9  0x00007ff5d679623c in ?? () from /usr/lib64/libQt5Widgets.so.5
#10 0x00007ff5d67976d8 in QMenuBar::eventFilter(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#11 0x00007ff5d51dfc0d in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#12 0x00007ff5d6617b45 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#13 0x00007ff5d661ef8f in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#14 0x00007ff5d51dfdfa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#15 0x00007ff5d665518e in QWidget::setParent(QWidget*, QFlags<Qt::WindowType>) () from /usr/lib64/libQt5Widgets.so.5
#16 0x00007ff5d6655e9c in QWidget::setParent(QWidget*) () from /usr/lib64/libQt5Widgets.so.5
#17 0x00007ff5d663405b in QLayout::addChildWidget(QWidget*) () from /usr/lib64/libQt5Widgets.so.5
#18 0x00007ff5d663406f in QLayout::addWidget(QWidget*) () from /usr/lib64/libQt5Widgets.so.5
#19 0x00007ff5d677d0bc in QMdiSubWindow::setWidget(QWidget*) () from /usr/lib64/libQt5Widgets.so.5
#20 0x00007ff5d6773463 in QMdiArea::addSubWindow(QWidget*, QFlags<Qt::WindowType>) () from /usr/lib64/libQt5Widgets.so.5
#21 0x00007ff5b3bc4405 in ?? () from /usr/lib64/qt5/plugins/kstyle_qtcurve5_config.so
#22 0x00007ff5b3bd19d1 in ?? () from /usr/lib64/qt5/plugins/kstyle_qtcurve5_config.so
#23 0x00007ff5b3bd1a61 in allocate_kstyle_config () from /usr/lib64/qt5/plugins/kstyle_qtcurve5_config.so
#24 0x00007ff5b4e1c341 in ?? () from /usr/lib64/qt5/plugins/kcm_style.so
#25 0x00007ff5d520658a in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#26 0x00007ff5d67091d2 in QAbstractButton::clicked(bool) () from /usr/lib64/libQt5Widgets.so.5
#27 0x00007ff5d67093d4 in ?? () from /usr/lib64/libQt5Widgets.so.5
#28 0x00007ff5d670af3e in ?? () from /usr/lib64/libQt5Widgets.so.5
#29 0x00007ff5d670b08c in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib64/libQt5Widgets.so.5
#30 0x00007ff5d6653f60 in QWidget::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#31 0x00007ff5d6617b6c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#32 0x00007ff5d661f971 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#33 0x00007ff5d51dfdfa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#34 0x00007ff5d661e5cf in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib64/libQt5Widgets.so.5
#35 0x00007ff5d666d2b5 in ?? () from /usr/lib64/libQt5Widgets.so.5
#36 0x00007ff5d666fb83 in ?? () from /usr/lib64/libQt5Widgets.so.5
#37 0x00007ff5d6617b6c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#38 0x00007ff5d661ef8f in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#39 0x00007ff5d51dfdfa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#40 0x00007ff5d611ff6b in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib64/libQt5Gui.so.5
#41 0x00007ff5d6121d05 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib64/libQt5Gui.so.5
#42 0x00007ff5d610036b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Gui.so.5
#43 0x00007ff5cad8b8d0 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#44 0x00007ff5cfea6c97 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#45 0x00007ff5cfea6ec8 in ?? () from /usr/lib64/libglib-2.0.so.0
#46 0x00007ff5cfea6f6c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#47 0x00007ff5d522c8af in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#48 0x00007ff5d51dec6a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#49 0x00007ff5d51e6cd4 in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#50 0x000000000040b581 in ?? ()
#51 0x00007ff5d48b7f20 in __libc_start_main () from /lib64/libc.so.6
#52 0x000000000040b5e9 in _start ()

Possible duplicates by query: bug 382655, bug 382433, bug 381613, bug 376582.

Reported using DrKonqi