Application: plasmashell (5.10.4)

Qt Version: 5.9.1
Frameworks Version: 5.36.0
Operating System: Linux 4.11.9-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

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

I quit chromium from Menu and it makes Plasma crash. I have regularly ten or more windows open, each with a few tabs.
I'm not sure it happens all the time because often I reboot or stop Plasma without quitting chromium first.

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 0x7f0a14a99c80 (LWP 660))]

Thread 7 (Thread 0x7f094b8c4700 (LWP 797)):
#0  0x00007f0a0e024e9d in poll () at /usr/lib/libc.so.6
#1  0x00007f0a0893cc09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f0a0893cd1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f0a0e959084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f0a0e8fcffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f0a0e71640e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f094e26718a in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#7  0x00007f0a0e71b15b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f0a0d8e2049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f0a0e02ef0f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f095e630700 (LWP 788)):
#0  0x00007f0a0e024e9d in poll () at /usr/lib/libc.so.6
#1  0x00007f0a0893cc09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f0a0893cd1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f0a0e959084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f0a0e8fcffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f0a0e71640e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f0a124578d6 in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007f0a0e71b15b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f0a0d8e2049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f0a0e02ef0f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f09ee39b700 (LWP 787)):
#0  0x00007f0a0d8e81ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f0a14172b04 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f0a14172b49 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f0a0d8e2049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f0a0e02ef0f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f09effff700 (LWP 786)):
#0  0x00007f0a0e024e9d in poll () at /usr/lib/libc.so.6
#1  0x00007f0a0893cc09 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f0a0893cd1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f0a0e959084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f0a0e8fcffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f0a0e71640e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f0a1189f1d5 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007f0a0e71b15b in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f0a0d8e2049 in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f0a0e02ef0f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f09f69e0700 (LWP 766)):
#0  0x00007f0a08981a69 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f0a0893bfb5 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007f0a0893cb3b in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f0a0893cd1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f0a0e959084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f0a0e8fcffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f0a0e71640e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f0a1189f1d5 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007f0a0e71b15b in  () at /usr/lib/libQt5Core.so.5
#9  0x00007f0a0d8e2049 in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007f0a0e02ef0f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f09f7fff700 (LWP 700)):
#0  0x00007f0a0e020bad in read () at /usr/lib/libc.so.6
#1  0x00007f0a08980730 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f0a0893c6eb in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007f0a0893cbb0 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007f0a0893cd1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007f0a0e959084 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f0a0e8fcffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007f0a0e71640e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007f0a0ed78396 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007f0a0e71b15b in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f0a0d8e2049 in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007f0a0e02ef0f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f0a14a99c80 (LWP 660)):
[KCrash Handler]
#5  0x00007f0a0e8c0d4a in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f0a0e8c10ac in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f0a0e8c7af9 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f0a0e92e786 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#9  0x00007f0a0e89906f in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#10 0x00007f0a0e8a080d in QAbstractItemModel::endRemoveRows() () at /usr/lib/libQt5Core.so.5
#11 0x00007f0954f0aa6a in TaskManager::TaskGroupingProxyModel::Private::sourceRowsAboutToBeRemoved(QModelIndex const&, int, int) () at /usr/lib/libtaskmanager.so.6
#12 0x00007f0954f0ce8a in  () at /usr/lib/libtaskmanager.so.6
#13 0x00007f0a0e92e786 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#14 0x00007f0a0e898fef in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#15 0x00007f0a0e8a00bc in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#16 0x00007f0a0e8c52ce in  () at /usr/lib/libQt5Core.so.5
#17 0x00007f0a0e8c5463 in  () at /usr/lib/libQt5Core.so.5
#18 0x00007f0a0e8c7ad8 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007f0a0e92e786 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#20 0x00007f0a0e898fef in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#21 0x00007f0a0e8a00bc in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#22 0x00007f095c9d157b in  () at /usr/lib/libKF5ItemModels.so.5
#23 0x00007f0a0e92e786 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#24 0x00007f0a0e898fef in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#25 0x00007f0a0e8a00bc in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#26 0x00007f0a0e8bcac2 in  () at /usr/lib/libQt5Core.so.5
#27 0x00007f0a0e92e786 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#28 0x00007f0a0e898fef in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#29 0x00007f0a0e8a00bc in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib/libQt5Core.so.5
#30 0x00007f0954f26a8b in TaskManager::XWindowTasksModel::Private::removeWindow(unsigned long long) () at /usr/lib/libtaskmanager.so.6
#31 0x00007f0a0e92e8af in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#32 0x00007f0a113b4a82 in KWindowSystem::windowRemoved(unsigned long long) () at /usr/lib/libKF5WindowSystem.so.5
#33 0x00007f09fc177429 in  () at /usr/lib/qt/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#34 0x00007f0a113ad488 in NETRootInfo::update(QFlags<NET::Property>, QFlags<NET::Property2>) () at /usr/lib/libKF5WindowSystem.so.5
#35 0x00007f0a113ae7f2 in NETRootInfo::event(xcb_generic_event_t*, QFlags<NET::Property>*, QFlags<NET::Property2>*) () at /usr/lib/libKF5WindowSystem.so.5
#36 0x00007f0a113aeb55 in NETRootInfo::event(xcb_generic_event_t*, unsigned long*, int) () at /usr/lib/libKF5WindowSystem.so.5
#37 0x00007f09fc17695d in  () at /usr/lib/qt/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#38 0x00007f0a0e8fba1f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib/libQt5Core.so.5
#39 0x00007f0a00b96d02 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib/libQt5XcbQpa.so.5
#40 0x00007f0a00b9799e in QXcbConnection::processXcbEvents() () at /usr/lib/libQt5XcbQpa.so.5
#41 0x00007f0a0e92f1d2 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#42 0x00007f0a0f8b0e4c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#43 0x00007f0a0f8b8926 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#44 0x00007f0a0e8febd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#45 0x00007f0a0e901426 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#46 0x00007f0a0e959a74 in  () at /usr/lib/libQt5Core.so.5
#47 0x00007f0a0893ca57 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#48 0x00007f0a0893cc88 in  () at /usr/lib/libglib-2.0.so.0
#49 0x00007f0a0893cd1c in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#50 0x00007f0a0e959061 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#51 0x00007f0a0e8fcffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#52 0x00007f0a0e906048 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#53 0x000055e525cb773b in  ()
#54 0x00007f0a0df614ca in __libc_start_main () at /usr/lib/libc.so.6
#55 0x000055e525cb7ada in _start ()

Reported using DrKonqi