Application: plasmashell (5.8.3)

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.4.46-11-default x86_64
Distribution: "openSUSE Leap 42.2"

-- Information about the crash:
- What I was doing when the application crashed:
Each time than firefox use more than 2 GB, if is killed, desktop crash

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd9878a6900 (LWP 2219))]

Thread 16 (Thread 0x7fd8977fe700 (LWP 3720)):
#0  0x00007fd9807e40af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fd9816cb65b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fd8c686b42f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fd8c686edea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fd8c686ee32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fd8c686ee32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007fd8c686ca46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#12 0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7fd897fff700 (LWP 3719)):
#0  0x00007fd9807e40af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fd9816cb65b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fd8c686b42f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fd8c686edea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fd8c686ca46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#8  0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7fd8a8d73700 (LWP 3718)):
#0  0x00007fd9807e40af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fd9816cb65b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fd8c686b42f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fd8c686edea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fd8c686ee32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fd8c686ca46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7fd8a9574700 (LWP 3717)):
#0  0x00007fd9807e40af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fd9816cb65b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fd8c686b42f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fd8c686edea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fd8c686ee32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fd8c686ca46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7fd8a9d75700 (LWP 3716)):
#0  0x00007fd9807e40af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fd9816cb65b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fd8c686b42f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fd8c686edea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fd8c686ee32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fd8c686ca46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7fd8aa576700 (LWP 3715)):
#0  0x00007fd9807e40af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fd9816cb65b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fd8c686b42f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fd8c686edea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fd8c686ee32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fd8c686ee32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#9  0x00007fd8c686ca46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#10 0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#12 0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7fd8aad77700 (LWP 3714)):
#0  0x00007fd9807e40af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fd9816cb65b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fd8c686b42f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fd8c686edea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fd8c686ee32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fd8c686ca46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7fd8ab578700 (LWP 3713)):
#0  0x00007fd9807e40af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fd9816cb65b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fd8c686b42f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#3  0x00007fd8c686edea in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#4  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#5  0x00007fd8c686ee32 in  () at /usr/lib64/libKF5ThreadWeaver.so.5
#6  0x00007fd8c686945b in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib64/libKF5ThreadWeaver.so.5
#7  0x00007fd8c686ca46 in ThreadWeaver::Thread::run() () at /usr/lib64/libKF5ThreadWeaver.so.5
#8  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#10 0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7fd8c3a9c700 (LWP 2540)):
#0  0x00007fd9818db98d in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#1  0x00007fd9818dbf05 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fd9818dd7cc in  () at /usr/lib64/libQt5Core.so.5
#3  0x00007fd97d69d95d in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fd97d69e230 in  () at /usr/lib64/libglib-2.0.so.0
#5  0x00007fd97d69e42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#6  0x00007fd9818dd32b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007fd98188afdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd9816c5f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#9  0x00007fd8c4ec48f7 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#10 0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#12 0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fd8cf065700 (LWP 2463)):
#0  0x00007fd9816c340a in QMutex::lock() () at /usr/lib64/libQt5Core.so.5
#1  0x00007fd9818dd255 in  () at /usr/lib64/libQt5Core.so.5
#2  0x00007fd97d69d95d in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd97d69e230 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007fd97d69e42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007fd9818dd32b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd98188afdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007fd9816c5f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd985555632 in  () at /usr/lib64/libQt5Quick.so.5
#9  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#11 0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fd961d9f700 (LWP 2429)):
#0  0x00007fd9807e40af in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fd986f8e93b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007fd986f8e969 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fd963a01700 (LWP 2416)):
#0  0x00007fd980fd649d in poll () at /lib64/libc.so.6
#1  0x00007fd97d69e314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fd97d69e42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd9818dd32b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd98188afdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd9816c5f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd9849d29c8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fd9695c8700 (LWP 2340)):
#0  0x00007fd980fd649d in poll () at /lib64/libc.so.6
#1  0x00007fd97d69e314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fd97d69e42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd9818dd32b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd98188afdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd9816c5f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd9849d29c8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fd96b00f700 (LWP 2279)):
#0  0x00007fd980fd649d in poll () at /lib64/libc.so.6
#1  0x00007fd97d69e314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fd97d69e42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007fd9818dd32b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fd98188afdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd9816c5f1a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fd9824461d5 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fd970d88700 (LWP 2269)):
#0  0x00007fd980fd649d in poll () at /lib64/libc.so.6
#1  0x00007fd985f093e2 in  () at /usr/lib64/libxcb.so.1
#2  0x00007fd985f0afcf in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007fd9730e2839 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007fd9816ca9e9 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007fd9807df734 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fd980fded3d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fd9878a6900 (LWP 2219)):
[KCrash Handler]
#6  0x00007fd9818581b0 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fd98185848f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fd98185f329 in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007fd9818b6bb1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#10 0x00007fd98192d274 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#11 0x00007fd98183bb21 in QAbstractItemModel::endRemoveRows() () at /usr/lib64/libQt5Core.so.5
#12 0x00007fd8cdba1fff in TaskManager::TaskGroupingProxyModel::Private::sourceRowsAboutToBeRemoved(QModelIndex const&, int, int) () at /usr/lib64/libtaskmanager.so.6
#13 0x00007fd8cdba4b69 in  () at /usr/lib64/libtaskmanager.so.6
#14 0x00007fd9818b6bb1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#15 0x00007fd98192d224 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#16 0x00007fd98183b2a4 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#17 0x00007fd981859e0d in  () at /usr/lib64/libQt5Core.so.5
#18 0x00007fd981859fbd in  () at /usr/lib64/libQt5Core.so.5
#19 0x00007fd98185f308 in  () at /usr/lib64/libQt5Core.so.5
#20 0x00007fd9818b6bb1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#21 0x00007fd98192d224 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#22 0x00007fd98183b2a4 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#23 0x00007fd8cd93ded5 in  () at /usr/lib64/libKF5ItemModels.so.5
#24 0x00007fd8cd93ebb9 in  () at /usr/lib64/libKF5ItemModels.so.5
#25 0x00007fd9818b6bb1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#26 0x00007fd98192d224 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#27 0x00007fd98183b2a4 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#28 0x00007fd9818532af in  () at /usr/lib64/libQt5Core.so.5
#29 0x00007fd9818b6bb1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#30 0x00007fd98192d224 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#31 0x00007fd98183b2a4 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#32 0x00007fd8cdbbbcd3 in TaskManager::XWindowTasksModel::Private::removeWindow(unsigned long long) () at /usr/lib64/libtaskmanager.so.6
#33 0x00007fd9818b71c3 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#34 0x00007fd9844ef302 in KWindowSystem::windowRemoved(unsigned long long) () at /usr/lib64/libKF5WindowSystem.so.5
#35 0x00007fd9699e9935 in  () at /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#36 0x00007fd9844e7ca1 in NETRootInfo::update(QFlags<NET::Property>, QFlags<NET::Property2>) () at /usr/lib64/libKF5WindowSystem.so.5
#37 0x00007fd9844e8b72 in NETRootInfo::event(xcb_generic_event_t*, QFlags<NET::Property>*, QFlags<NET::Property2>*) () at /usr/lib64/libKF5WindowSystem.so.5
#38 0x00007fd9844e8da2 in NETRootInfo::event(xcb_generic_event_t*, unsigned long*, int) () at /usr/lib64/libKF5WindowSystem.so.5
#39 0x00007fd9699e9306 in  () at /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#40 0x00007fd98188a270 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#41 0x00007fd9730e0be4 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#42 0x00007fd9730e2c3b in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#43 0x00007fd9818b8166 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#44 0x00007fd982814e3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#45 0x00007fd98281949a in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#46 0x00007fd98188cfc5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#47 0x00007fd98188edaa in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#48 0x00007fd9818ddc83 in  () at /usr/lib64/libQt5Core.so.5
#49 0x00007fd97d69e134 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#50 0x00007fd97d69e388 in  () at /usr/lib64/libglib-2.0.so.0
#51 0x00007fd97d69e42c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#52 0x00007fd9818dd30c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#53 0x00007fd98188afdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#54 0x00007fd981892ec6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#55 0x000000000041eacf in  ()
#56 0x00007fd980f156e5 in __libc_start_main () at /lib64/libc.so.6
#57 0x000000000041ed39 in _start ()

Reported using DrKonqi