Bug 402179

Application: systemsettings5 (5.14.4)

Qt Version: 5.11.2
Frameworks Version: 5.52.0
Operating System: Linux 4.14.87-1-MANJARO x86_64
Distribution: "Manjaro Linux"

-- Information about the crash:
- What I was doing when the application crashed:
I changed Application Style from Breeze to Formvolvere and it have crashed.
Link to that style: https://store.kde.org/p/1268541/
Also it happens with another styles that have transparency effect.

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 0x7ff223ab7cc0 (LWP 2453))]

Thread 5 (Thread 0x7ff1f1a89700 (LWP 2468)):
#0  0x00007ff226e92414 in g_mutex_unlock () from /usr/lib/libglib-2.0.so.0
#1  0x00007ff226edaaef in g_main_context_query () from /usr/lib/libglib-2.0.so.0
#2  0x00007ff226ee3e5c in ?? () from /usr/lib/libglib-2.0.so.0
#3  0x00007ff226ee3fce in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#4  0x00007ff22984bfe4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007ff2297f78cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#6  0x00007ff229640eb9 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#7  0x00007ff22964af65 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007ff227bd7a9d in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007ff22932fb23 in clone () from /usr/lib/libc.so.6

Thread 4 (Thread 0x7ff1f2a8b700 (LWP 2466)):
#0  0x00007ff229324c21 in poll () from /usr/lib/libc.so.6
#1  0x00007ff226ee3ee0 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007ff226ee3fce in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007ff22984bfe4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007ff2297f78cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007ff229640eb9 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007ff22964af65 in ?? () from /usr/lib/libQt5Core.so.5
#7  0x00007ff227bd7a9d in start_thread () from /usr/lib/libpthread.so.0
#8  0x00007ff22932fb23 in clone () from /usr/lib/libc.so.6

Thread 3 (Thread 0x7ff1f37ff700 (LWP 2465)):
#0  0x00007ff226e92414 in g_mutex_unlock () from /usr/lib/libglib-2.0.so.0
#1  0x00007ff226ee3cc8 in g_main_context_acquire () from /usr/lib/libglib-2.0.so.0
#2  0x00007ff226ee3d87 in ?? () from /usr/lib/libglib-2.0.so.0
#3  0x00007ff226ee3fce in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#4  0x00007ff22984bfe4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007ff2297f78cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#6  0x00007ff229640eb9 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#7  0x00007ff22964af65 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007ff227bd7a9d in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007ff22932fb23 in clone () from /usr/lib/libc.so.6

Thread 2 (Thread 0x7ff220ba6700 (LWP 2455)):
#0  0x00007ff226ee3621 in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#1  0x00007ff226ee3e06 in ?? () from /usr/lib/libglib-2.0.so.0
#2  0x00007ff226ee3fce in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#3  0x00007ff22984bfe4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#4  0x00007ff2297f78cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#5  0x00007ff229640eb9 in QThread::exec() () from /usr/lib/libQt5Core.so.5
#6  0x00007ff229a9dba6 in ?? () from /usr/lib/libQt5DBus.so.5
#7  0x00007ff22964af65 in ?? () from /usr/lib/libQt5Core.so.5
#8  0x00007ff227bd7a9d in start_thread () from /usr/lib/libpthread.so.0
#9  0x00007ff22932fb23 in clone () from /usr/lib/libc.so.6

Thread 1 (Thread 0x7ff223ab7cc0 (LWP 2453)):
[KCrash Handler]
#6  0x00007ff211d30f6b in ?? () from /usr/lib/libKF5Plasma.so.5
#7  0x00007ff211d4f4e2 in ?? () from /usr/lib/libKF5Plasma.so.5
#8  0x00007ff211d4f729 in ?? () from /usr/lib/libKF5Plasma.so.5
#9  0x00007ff211d43b31 in Plasma::Theme::~Theme() () from /usr/lib/libKF5Plasma.so.5
#10 0x00007ff211e721a4 in ?? () from /usr/lib/qt/qml/org/kde/plasma/core/libcorebindingsplugin.so
#11 0x00007ff2298209bb in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#12 0x00007ff229829955 in QObject::~QObject() () from /usr/lib/libQt5Core.so.5
#13 0x00007ff22899bc6d in QQmlEngine::~QQmlEngine() () from /usr/lib/libQt5Qml.so.5
#14 0x00007ff22899bcaa in QQmlEngine::~QQmlEngine() () from /usr/lib/libQt5Qml.so.5
#15 0x00007ff2298209bb in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#16 0x00007ff22a23ed4f in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#17 0x00007ff22903fa3a in QQuickWidget::~QQuickWidget() () from /usr/lib/libQt5QuickWidgets.so.5
#18 0x00007ff2298209bb in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#19 0x00007ff22a23ed4f in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#20 0x00007ff218f883d2 in ?? () from /usr/lib/qt/plugins/systemsettings_sidebar_mode.so
#21 0x00007ff2298209bb in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#22 0x00007ff22a23ed4f in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#23 0x00007ff22a3a9c7a in QStackedWidget::~QStackedWidget() () from /usr/lib/libQt5Widgets.so.5
#24 0x00007ff2298209bb in QObjectPrivate::deleteChildren() () from /usr/lib/libQt5Core.so.5
#25 0x00007ff22a23ed4f in QWidget::~QWidget() () from /usr/lib/libQt5Widgets.so.5
#26 0x00007ff22ac75085 in KMainWindow::~KMainWindow() () from /usr/lib/libKF5XmlGui.so.5
#27 0x000055599eef138f in ?? ()
#28 0x000055599eef13f9 in ?? ()
#29 0x00007ff229823371 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#30 0x00007ff22a243b0c in QWidget::event(QEvent*) () from /usr/lib/libQt5Widgets.so.5
#31 0x00007ff22a34f445 in QMainWindow::event(QEvent*) () from /usr/lib/libQt5Widgets.so.5
#32 0x00007ff22ac775ac in KMainWindow::event(QEvent*) () from /usr/lib/libKF5XmlGui.so.5
#33 0x00007ff22acc1cb6 in KXmlGuiWindow::event(QEvent*) () from /usr/lib/libKF5XmlGui.so.5
#34 0x00007ff22a203e14 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#35 0x00007ff22a20b6e1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Widgets.so.5
#36 0x00007ff2297f8c39 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#37 0x00007ff2297fbccc in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQt5Core.so.5
#38 0x00007ff22984c9d4 in ?? () from /usr/lib/libQt5Core.so.5
#39 0x00007ff226ee23cf in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#40 0x00007ff226ee3f89 in ?? () from /usr/lib/libglib-2.0.so.0
#41 0x00007ff226ee3fce in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#42 0x00007ff22984bfc9 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#43 0x00007ff2236ebda2 in ?? () from /usr/lib/libQt5XcbQpa.so.5
#44 0x00007ff2297f78cc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
#45 0x00007ff2297ffbc6 in QCoreApplication::exec() () from /usr/lib/libQt5Core.so.5
#46 0x000055599eeee465 in ?? ()
#47 0x00007ff229258223 in __libc_start_main () from /usr/lib/libc.so.6
#48 0x000055599eeee4ee in _start ()
[Inferior 1 (process 2453) detached]

Possible duplicates by query: bug 269671, bug 265100, bug 255081.

Reported using DrKonqi