Application: plasmashell (5.10.0)

Qt Version: 5.8.0
Frameworks Version: 5.34.0
Operating System: Linux 4.9.30-1-lts x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:

Switching desktops using keyboard shortcuts.

- Unusual behavior I noticed:

The task manager is configured to not show open windows from all desktops but from the current desktop. When I was switching, I noticed it is showing the same windows on each and while I was doing this, it just crashed without warning.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff5fd051800 (LWP 779))]

Thread 10 (Thread 0x7ff513fff700 (LWP 5644)):
#0  0x00007ff5f66e302d in read () at /usr/lib/libc.so.6
#1  0x00007ff5eac1df51 in pa_read () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#2  0x00007ff5eb2ae30e in pa_mainloop_prepare () at /usr/lib/libpulse.so.0
#3  0x00007ff5eb2aed80 in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#4  0x00007ff5eb2aee40 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#5  0x00007ff5eb2bce29 in  () at /usr/lib/libpulse.so.0
#6  0x00007ff5eac4cfe8 in  () at /usr/lib/pulseaudio/libpulsecommon-10.0.so
#7  0x00007ff5f5c93297 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007ff5f66f125f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7ff52df3b700 (LWP 5643)):
#0  0x00007ff5f66fe09f in __libc_enable_asynccancel () at /usr/lib/libc.so.6
#1  0x00007ff5f66e72b2 in poll () at /usr/lib/libc.so.6
#2  0x00007ff5f14c59b6 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff5f14c5acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007ff5f701af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff5f6fc23aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007ff5f6dda44a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007ff5f9f39085 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007ff5f6ddee9c in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff5f5c93297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff5f66f125f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7ff52e7a6700 (LWP 1049)):
#0  0x00007ff5f66e72bd in poll () at /usr/lib/libc.so.6
#1  0x00007ff5f14c59b6 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff5f14c5acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff5f701af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff5f6fc23aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff5f6dda44a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff53114a0a7 in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007ff5f6ddee9c in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff5f5c93297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff5f66f125f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7ff543226700 (LWP 1024)):
#0  0x00007ff5f66e72bd in poll () at /usr/lib/libc.so.6
#1  0x00007ff5f14c59b6 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff5f14c5acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff5f701af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff5f6fc23aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff5f6dda44a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff5faaecfd6 in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007ff5f6ddee9c in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff5f5c93297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff5f66f125f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7ff5d339b700 (LWP 1012)):
#0  0x00007ff5f5c9939d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff5fc7e0234 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007ff5fc7e0279 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007ff5f5c93297 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff5f66f125f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7ff5dd154700 (LWP 874)):
#0  0x00007ff5f150b1e4 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007ff5f14c48de in g_main_context_acquire () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff5f14c5865 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff5f14c5acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007ff5f701af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff5f6fc23aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007ff5f6dda44a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007ff5f9f39085 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007ff5f6ddee9c in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff5f5c93297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff5f66f125f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7ff5df1e2700 (LWP 854)):
#0  0x00007ff5f14c29ad in  () at /usr/lib/libglib-2.0.so.0
#1  0x00007ff5f14c52f4 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff5f14c5954 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff5f14c5acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007ff5f701af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff5f6fc23aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007ff5f6dda44a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007ff5f9f39085 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007ff5f6ddee9c in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff5f5c93297 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff5f66f125f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7ff5e4db5700 (LWP 804)):
#0  0x00007ff5f66e72bd in poll () at /usr/lib/libc.so.6
#1  0x00007ff5f14c59b6 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff5f14c5acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff5f701af2b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff5f6fc23aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff5f6dda44a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff5f7b90c45 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007ff5f6ddee9c in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff5f5c93297 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff5f66f125f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7ff5e70c4700 (LWP 797)):
#0  0x00007ff5f66e72bd in poll () at /usr/lib/libc.so.6
#1  0x00007ff5fb7068e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007ff5fb708679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007ff5e96361d9 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007ff5f6ddee9c in  () at /usr/lib/libQt5Core.so.5
#5  0x00007ff5f5c93297 in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007ff5f66f125f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7ff5fd051800 (LWP 779)):
[KCrash Handler]
#6  0x00007ff5f6f87089 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007ff5f6f873ec in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff5f6f8dc69 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff5f6ff1693 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#10 0x00007ff5f706ad54 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#11 0x00007ff5f6f6665b in QAbstractItemModel::endRemoveRows() () at /usr/lib/libQt5Core.so.5
#12 0x00007ff541618caf in TaskManager::TaskGroupingProxyModel::Private::sourceRowsAboutToBeRemoved(QModelIndex const&, int, int) () at /usr/lib/libtaskmanager.so.6
#13 0x00007ff54161b019 in  () at /usr/lib/libtaskmanager.so.6
#14 0x00007ff5f6ff1693 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#15 0x00007ff5f706ace4 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#16 0x00007ff5f6f65f3b in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#17 0x00007ff5f6f8b4bd in  () at /usr/lib/libQt5Core.so.5
#18 0x00007ff5f6f8ba12 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007ff5f6f8bd89 in  () at /usr/lib/libQt5Core.so.5
#20 0x00007ff5f6f8c58a in QSortFilterProxyModel::invalidateFilter() () at /usr/lib/libQt5Core.so.5
#21 0x00007ff5416112c5 in TaskManager::TaskFilterProxyModel::setVirtualDesktop(unsigned int) () at /usr/lib/libtaskmanager.so.6
#22 0x00007ff54163e992 in  () at /usr/lib/libtaskmanager.so.6
#23 0x00007ff5f9f234b5 in  () at /usr/lib/libQt5Qml.so.5
#24 0x00007ff5f9f23910 in  () at /usr/lib/libQt5Qml.so.5
#25 0x00007ff5f9f20b49 in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#26 0x00007ff5f9f20d3e in QQmlBinding::refresh() () at /usr/lib/libQt5Qml.so.5
#27 0x00007ff5f9ef64a4 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/libQt5Qml.so.5
#28 0x00007ff5f9e9a64c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/libQt5Qml.so.5
#29 0x00007ff5f6ff0e8f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#30 0x00007ff5f6ff17a7 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#31 0x00007ff5f9a4b67e in KWindowSystem::currentDesktopChanged(int) () at /usr/lib/libKF5WindowSystem.so.5
#32 0x00007ff5e419d757 in  () at /usr/lib/qt/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#33 0x00007ff5f6fc0f0f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/libQt5Core.so.5
#34 0x00007ff5e9637740 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/libQt5XcbQpa.so.5
#35 0x00007ff5e96383d2 in QXcbConnection::processXcbEvents() () at /usr/lib/libQt5XcbQpa.so.5
#36 0x00007ff5f6ff2332 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#37 0x00007ff5f7f59d7c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#38 0x00007ff5f7f61494 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#39 0x00007ff5f6fc3d38 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#40 0x00007ff5f6fc5efd in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#41 0x00007ff5f701aaf3 in  () at /usr/lib/libQt5Core.so.5
#42 0x00007ff5f14c57b7 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#43 0x00007ff5f14c5a20 in  () at /usr/lib/libglib-2.0.so.0
#44 0x00007ff5f14c5acc in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#45 0x00007ff5f701af0f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#46 0x00007ff5f6fc23aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#47 0x00007ff5f6fca744 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#48 0x000000000041cbb2 in  ()
#49 0x00007ff5f662443a in __libc_start_main () at /usr/lib/libc.so.6
#50 0x000000000041cf2a in _start ()

Reported using DrKonqi