Bug 405792

Application: plasmashell (5.15.3)

Qt Version: 5.12.2
Frameworks Version: 5.56.0
Operating System: Linux 4.19.30-1-lts x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed: Just started up the DE - so nothing important in particular.

- Custom settings of the application: I use kvantum with a custom theme, anything else doesn't seem relevant.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f30be8fd880 (LWP 944))]

Thread 11 (Thread 0x7f307bfff700 (LWP 1134)):
#0  0x00007f30c29a1afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f30c36a3c4c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f30c36a3d3a in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f30c53f391d in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f30c53f3b8c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f30c369d96c in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f30c299ba9d in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f30c3387b23 in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7f3095efe700 (LWP 1133)):
#0  0x00007f30c19f53a9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f30c1a47675 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f30c1a4777e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f30c38afcb4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f30c3858a8c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f30c369c569 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f30c50a4109 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f30c369d96c in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f30c299ba9d in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f30c3387b23 in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7f3096b8a700 (LWP 1115)):
#0  0x00007f30c29a1afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f30c36a3c4c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f30c36a3d3a in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f30c53f391d in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f30c53f3b8c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f30c369d96c in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f30c299ba9d in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f30c3387b23 in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f30977fe700 (LWP 1111)):
#0  0x00007f30c29a1afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f30c36a3c4c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f30c36a3d3a in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f30c53f391d in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f30c53f3b8c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f30c369d96c in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f30c299ba9d in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f30c3387b23 in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f3097fff700 (LWP 1106)):
#0  0x00007f30c337cc21 in poll () at /usr/lib/libc.so.6
#1  0x00007f30c1a47690 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f30c1a4777e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f30c38afcb4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f30c3858a8c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f30c369c569 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f30c369d96c in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f30c299ba9d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f30c3387b23 in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f30ad1de700 (LWP 1043)):
#0  0x00007f30c29a1afc in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f30c36a3c4c in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f30c36a3d3a in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f30c53f391d in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f30c53f3b8c in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007f30c369d96c in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f30c299ba9d in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007f30c3387b23 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f30b48d3700 (LWP 1042)):
#0  0x00007f30c337cc21 in poll () at /usr/lib/libc.so.6
#1  0x00007f30c1a47690 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f30c1a4777e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f30c38afcb4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f30c3858a8c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f30c369c569 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f30c536be7b in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007f30c369d96c in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f30c299ba9d in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f30c3387b23 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f30b6dee700 (LWP 999)):
#0  0x00007f30c337cc21 in poll () at /usr/lib/libc.so.6
#1  0x00007f30c1a47690 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f30c1a4777e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f30c38afcb4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f30c3858a8c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f30c369c569 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f30c50a4109 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f30c369d96c in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f30c299ba9d in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f30c3387b23 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f30b7fff700 (LWP 995)):
#0  0x00007f30c33787a4 in read () at /usr/lib/libc.so.6
#1  0x00007f30c19f5961 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f30c1a45e40 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f30c1a47636 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f30c1a4777e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f30c38afcb4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f30c3858a8c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f30c369c569 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f30c4138ba6 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007f30c369d96c in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f30c299ba9d in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f30c3387b23 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f30bda24700 (LWP 981)):
#0  0x00007f30c337cc21 in poll () at /usr/lib/libc.so.6
#1  0x00007f30c57e8630 in  () at /usr/lib/libxcb.so.1
#2  0x00007f30c57ea2db in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f30be3aa989 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f30c369d96c in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f30c299ba9d in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f30c3387b23 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f30be8fd880 (LWP 944)):
[KCrash Handler]
#6  0x00007f30c4489094 in QAbstractButton::isDown() const () at /usr/lib/libQt5Widgets.so.5
#7  0x00007f30bcc8cf86 in Kvantum::Style::drawItemText(QPainter*, QRect const&, int, QPalette const&, bool, QString const&, QPalette::ColorRole) const () at /usr/lib/qt/plugins/styles/libkvantum.so
#8  0x00007f30bcc78aa2 in Kvantum::Style::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) const () at /usr/lib/qt/plugins/styles/libkvantum.so
#9  0x00007f30b52311f4 in  () at /usr/lib/qt/qml/QtQuick/Controls/libqtquickcontrolsplugin.so
#10 0x00007f30b5231826 in  () at /usr/lib/qt/qml/QtQuick/Controls/libqtquickcontrolsplugin.so
#11 0x00007f30c5449dd3 in QQuickWindowPrivate::polishItems() () at /usr/lib/libQt5Quick.so.5
#12 0x00007f30c53f07a9 in  () at /usr/lib/libQt5Quick.so.5
#13 0x00007f30c53f2f07 in  () at /usr/lib/libQt5Quick.so.5
#14 0x00007f30c53f356b in  () at /usr/lib/libQt5Quick.so.5
#15 0x00007f30c3c3a705 in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#16 0x00007f30c5454dfc in QQuickWindow::event(QEvent*) () at /usr/lib/libQt5Quick.so.5
#17 0x00007f30c439ae24 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#18 0x00007f30c43a25f1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#19 0x00007f30c3859df9 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#20 0x00007f30c3c2fd01 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/libQt5Gui.so.5
#21 0x00007f30c3c2ff9e in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#22 0x00007f30c3c0975c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#23 0x00007f30be3ab9ac in  () at /usr/lib/libQt5XcbQpa.so.5
#24 0x00007f30c1a457bf in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#25 0x00007f30c1a47739 in  () at /usr/lib/libglib-2.0.so.0
#26 0x00007f30c1a4777e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#27 0x00007f30c38afc99 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#28 0x00007f30c3858a8c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#29 0x00007f30c3860de6 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#30 0x00005582eb663dbe in  ()
#31 0x00007f30c32b0223 in __libc_start_main () at /usr/lib/libc.so.6
#32 0x00005582eb66426e in _start ()
[Inferior 1 (process 944) detached]

Possible duplicates by query: bug 405781, bug 405728.

Reported using DrKonqi