Application: plasmashell (5.4.2)

Qt Version: 5.5.0
Operating System: Linux 4.1.12-1-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
Plasma 5 frequently crashes during usuall Desktop usage (Firefox, Thunderbird, konsole, ...).

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7efcc362e7c0 (LWP 8747))]

Thread 8 (Thread 0x7efcad129700 (LWP 8749)):
#0  0x00007efcbcba9c1d in poll () at /lib64/libc.so.6
#1  0x00007efcc1aaf422 in  () at /usr/lib64/libxcb.so.1
#2  0x00007efcc1ab100f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007efcaf279c29 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007efcbd2a055f in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007efcbc3b30a4 in start_thread () at /lib64/libpthread.so.0
#6  0x00007efcbcbb204d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7efca6440700 (LWP 8765)):
#0  0x00007efcbcba9c1d in poll () at /lib64/libc.so.6
#1  0x00007efcb929ae64 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007efcb929af7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007efcbd4d1a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007efcbd478a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007efcbd29b84a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007efcc056b5f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007efcbd2a055f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007efcbc3b30a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007efcbcbb204d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7efc93410700 (LWP 8766)):
#0  0x00007efcb92dccf9 in g_mutex_lock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007efcb929ae4a in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007efcb929af7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007efcbd4d1a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007efcbd478a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007efcbd29b84a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007efcc056b5f8 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007efcbd2a055f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007efcbc3b30a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007efcbcbb204d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7efc919aa700 (LWP 8769)):
#0  0x00007efcb92dcd14 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007efcb929a4a0 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007efcb929ad80 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007efcb929af7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007efcbd4d1a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007efcbd478a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007efcbd29b84a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007efcc056b5f8 in  () at /usr/lib64/libQt5Qml.so.5
#8  0x00007efcbd2a055f in  () at /usr/lib64/libQt5Core.so.5
#9  0x00007efcbc3b30a4 in start_thread () at /lib64/libpthread.so.0
#10 0x00007efcbcbb204d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7efc8bfff700 (LWP 8770)):
#0  0x00007efcbc3b705f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007efcc2d137eb in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007efcc2d13819 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007efcbc3b30a4 in start_thread () at /lib64/libpthread.so.0
#4  0x00007efcbcbb204d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7efc889d7700 (LWP 8771)):
#0  0x00007efcb9299ec2 in g_main_context_acquire () at /usr/lib64/libglib-2.0.so.0
#1  0x00007efcb929ad25 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007efcb929af7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007efcbd4d1a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007efcbd478a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007efcbd29b84a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007efcc10f7f82 in  () at /usr/lib64/libQt5Quick.so.5
#7  0x00007efcbd2a055f in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007efcbc3b30a4 in start_thread () at /lib64/libpthread.so.0
#9  0x00007efcbcbb204d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7efbf5440700 (LWP 8779)):
#0  0x00007efcbd350aa0 in QElapsedTimer::clockType() () at /usr/lib64/libQt5Core.so.5
#1  0x00007efcbd350ad9 in QElapsedTimer::isMonotonic() () at /usr/lib64/libQt5Core.so.5
#2  0x00007efcbd4d03fe in QTimerInfoList::repairTimersIfNeeded() () at /usr/lib64/libQt5Core.so.5
#3  0x00007efcbd4d0623 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#4  0x00007efcbd4d182e in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007efcb929a4ad in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#6  0x00007efcb929ad80 in  () at /usr/lib64/libglib-2.0.so.0
#7  0x00007efcb929af7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#8  0x00007efcbd4d1a5b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#9  0x00007efcbd478a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#10 0x00007efcbd29b84a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#11 0x00007efbf6a8db77 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#12 0x00007efcbd2a055f in  () at /usr/lib64/libQt5Core.so.5
#13 0x00007efcbc3b30a4 in start_thread () at /lib64/libpthread.so.0
#14 0x00007efcbcbb204d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7efcc362e7c0 (LWP 8747)):
[KCrash Handler]
#6  0x00007efcc033d219 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007efcc05aa859 in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /usr/lib64/libQt5Qml.so.5
#8  0x00007efcc05d22cc in  () at /usr/lib64/libQt5Qml.so.5
#9  0x00007efcc05d2b4b in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Qml.so.5
#10 0x00007efcbd4aaa91 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#11 0x00007efcbd52893c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /usr/lib64/libQt5Core.so.5
#12 0x00007efbfd29b734 in  () at /usr/lib64/libtaskmanager.so.5
#13 0x00007efbfd29c077 in  () at /usr/lib64/libtaskmanager.so.5
#14 0x00007efcbd4aa996 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#15 0x00007efbfd2a3a48 in TaskManager::AbstractGroupableItem::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#16 0x00007efcbd4aa996 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#17 0x00007efbfd2a3b78 in TaskManager::Task::changed(QFlags<TaskManager::TaskChange>) () at /usr/lib64/libtaskmanager.so.5
#18 0x00007efbfd2852b6 in TaskManager::Task::setActive(bool) () at /usr/lib64/libtaskmanager.so.5
#19 0x00007efbfd29770c in TaskManager::TaskManager::activeWindowChanged(unsigned long long) () at /usr/lib64/libtaskmanager.so.5
#20 0x00007efbfd29978c in  () at /usr/lib64/libtaskmanager.so.5
#21 0x00007efcbd4aa996 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#22 0x00007efcc007c292 in KWindowSystem::activeWindowChanged(unsigned long long) () at /usr/lib64/libKF5WindowSystem.so.5
#23 0x00007efca6654af3 in  () at /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#24 0x00007efcbd477cd0 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#25 0x00007efcaf2780d4 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#26 0x00007efcaf27a05b in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#27 0x00007efcbd4ab796 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#28 0x00007efcbe7f3e8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#29 0x00007efcbe7f8cd8 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#30 0x00007efcbd47aba5 in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#31 0x00007efcbd47cd67 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#32 0x00007efcbd4d25c3 in  () at /usr/lib64/libQt5Core.so.5
#33 0x00007efcb929ac84 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#34 0x00007efcb929aed8 in  () at /usr/lib64/libglib-2.0.so.0
#35 0x00007efcb929af7c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#36 0x00007efcbd4d1a3c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#37 0x00007efcbd478a63 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#38 0x00007efcbd4805d6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#39 0x000000000043467b in main ()

Reported using DrKonqi