Application: plasmashell (5.10.4)

Qt Version: 5.9.1
Frameworks Version: 5.36.0
Operating System: Linux 4.12.8-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
sometimes, when i switch desktops plasma crashes and restarts.

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 0x7f9773cc88c0 (LWP 6726))]

Thread 14 (Thread 0x7f968c28b700 (LWP 7401)):
#0  0x00007f976d2d1efd in read () at /lib64/libc.so.6
#1  0x00007f976834f840 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f976830b7fb in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f976830bcc0 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f976830be2c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007f976dbf46ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f976db9d35a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f976d9cd31a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007f968eb2cf37 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#9  0x00007f976d9d1d2e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#10 0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#11 0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7f96ac05f700 (LWP 7072)):
#0  0x00007f9768308c78 in  () at /usr/lib64/libglib-2.0.so.0
#1  0x00007f976830b18b in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f976830bc4b in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f976830be2c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007f976dbf46ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f976db9d35a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007f976d9cd31a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007f97716bf342 in QQuickPixmapReader::run() () at /usr/lib64/libQt5Quick.so.5
#8  0x00007f976d9d1d2e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#10 0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7f96b8c98700 (LWP 6960)):
#0  0x00007f976cb9f5dd in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f96c352e1bb in  () at /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f96c352def7 in  () at /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7f96b9499700 (LWP 6959)):
#0  0x00007f976cb9f5dd in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f96c352e1bb in  () at /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f96c352def7 in  () at /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7f96b9c9a700 (LWP 6958)):
#0  0x00007f976cb9f5dd in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f96c352e1bb in  () at /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f96c352def7 in  () at /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7f96ba49b700 (LWP 6957)):
#0  0x00007f976cb9f5dd in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f96c352e1bb in  () at /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f96c352def7 in  () at /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7f96baea1700 (LWP 6956)):
#0  0x00007f976cb9f5dd in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f96c352e1bb in  () at /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f96c352def7 in  () at /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f96bb6a2700 (LWP 6955)):
#0  0x00007f976cb9f5dd in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f96c352e1bb in  () at /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f96c352def7 in  () at /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f974e1a7700 (LWP 6911)):
#0  0x00007f976cb9f5dd in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f97733998e4 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007f9773399929 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f974ffff700 (LWP 6868)):
#0  0x00007f976d2d618d in poll () at /lib64/libc.so.6
#1  0x00007f976830bd19 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f976830be2c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f976dbf46ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f976db9d35a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f976d9cd31a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f9770b18705 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f976d9d1d2e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f9755f16700 (LWP 6791)):
#0  0x00007f976d2d618d in poll () at /lib64/libc.so.6
#1  0x00007f976830bd19 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f976830be2c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f976dbf46ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f976db9d35a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f976d9cd31a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f9770b18705 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#7  0x00007f976d9d1d2e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f975795c700 (LWP 6749)):
#0  0x00007f976d2d618d in poll () at /lib64/libc.so.6
#1  0x00007f976830bd19 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007f976830be2c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007f976dbf46ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007f976db9d35a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f976d9cd31a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007f976e077a45 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007f976d9d1d2e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#8  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#9  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f975dba0700 (LWP 6742)):
#0  0x00007f976d2d618d in poll () at /lib64/libc.so.6
#1  0x00007f97722c1387 in  () at /usr/lib64/libxcb.so.1
#2  0x00007f97722c316a in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007f97605504b9 in QXcbEventReader::run() () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f976d9d1d2e in QThreadPrivate::start(void*) () at /usr/lib64/libQt5Core.so.5
#5  0x00007f976cb994d7 in start_thread () at /lib64/libpthread.so.0
#6  0x00007f976d2dfb2f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f9773cc88c0 (LWP 6726)):
[KCrash Handler]
#6  0x00007f976db63c81 in QSortFilterProxyModelPrivate::updateChildrenMapping(QModelIndex const&, QSortFilterProxyModelPrivate::Mapping*, Qt::Orientation, int, int, int, bool) () at /usr/lib64/libQt5Core.so.5
#7  0x00007f976db63fbc in QSortFilterProxyModelPrivate::source_items_removed(QModelIndex const&, int, int, Qt::Orientation) [clone .part.94] () at /usr/lib64/libQt5Core.so.5
#8  0x00007f976db6a241 in QSortFilterProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Core.so.5
#9  0x00007f976dbcc25a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#10 0x00007f976db3e54e in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#11 0x00007f976db4531b in QAbstractItemModel::endRemoveRows() () at /usr/lib64/libQt5Core.so.5
#12 0x00007f96933013fb in TaskManager::TaskGroupingProxyModel::Private::sourceRowsAboutToBeRemoved(QModelIndex const&, int, int) (this=0xb314f96ae0, parent=..., first=<optimized out>, last=2) at /usr/src/debug/plasma-workspace-5.10.4/libtaskmanager/taskgroupingproxymodel.cpp:197
#13 0x00007f9693303d99 in TaskManager::TaskGroupingProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/plasma-workspace-5.10.4/build/libtaskmanager/taskmanager_autogen/include/moc_taskgroupingproxymodel.cpp:154
#14 0x00007f976dbcc25a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#15 0x00007f976db3e4ee in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#16 0x00007f976db44cfb in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#17 0x00007f976db67d35 in QSortFilterProxyModelPrivate::remove_source_items(QVector<int>&, QVector<int>&, QVector<int> const&, QModelIndex const&, Qt::Orientation, bool) () at /usr/lib64/libQt5Core.so.5
#18 0x00007f976db67e8c in QSortFilterProxyModelPrivate::source_items_about_to_be_removed(QModelIndex const&, int, int, Qt::Orientation) () at /usr/lib64/libQt5Core.so.5
#19 0x00007f976db6a220 in QSortFilterProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Core.so.5
#20 0x00007f976dbcc25a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#21 0x00007f976db3e4ee in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#22 0x00007f976db44cfb in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#23 0x00007f96ab03fc8f in  () at /usr/lib64/libKF5ItemModels.so.5
#24 0x00007f96ab040051 in  () at /usr/lib64/libKF5ItemModels.so.5
#25 0x00007f976dbcc25a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#26 0x00007f976db3e4ee in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#27 0x00007f976db44cfb in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#28 0x00007f976db60061 in QIdentityProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib64/libQt5Core.so.5
#29 0x00007f976dbcc25a in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#30 0x00007f976db3e4ee in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#31 0x00007f976db44cfb in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () at /usr/lib64/libQt5Core.so.5
#32 0x00007f969331c50e in TaskManager::XWindowTasksModel::Private::removeWindow(unsigned long long) (this=0xb314ec98e0, window=<optimized out>) at /usr/src/debug/plasma-workspace-5.10.4/libtaskmanager/xwindowtasksmodel.cpp:252
#33 0x00007f976dbcc35c in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#34 0x00007f977063aff2 in KWindowSystem::windowRemoved(unsigned long long) (this=this@entry=0x7f9770849c20 <(anonymous namespace)::Q_QGS_g_kwmInstanceContainer::innerFunction()::holder>, _t1=<optimized out>, _t1@entry=142606349) at /usr/src/debug/kwindowsystem-5.36.0/build/src/KF5WindowSystem_autogen/EWIEGA46WW/moc_kwindowsystem.cpp:313
#35 0x00007f97563368d9 in NETEventFilter::removeClient(unsigned int) (this=0xb3145ab2c0, w=142606349) at /usr/src/debug/kwindowsystem-5.36.0/src/platforms/xcb/kwindowsystem.cpp:382
#36 0x00007f977063381c in NETRootInfo::update(QFlags<NET::Property>, QFlags<NET::Property2>) (this=0xb3145ab2c0, properties=..., properties@entry=..., properties2=..., properties2@entry=...) at /usr/src/debug/kwindowsystem-5.36.0/src/platforms/xcb/netwm.cpp:2046
#37 0x00007f9770634552 in NETRootInfo::event(xcb_generic_event_t*, QFlags<NET::Property>*, QFlags<NET::Property2>*) (this=this@entry=0xb3145ab2c0, event=event@entry=0xb3164e74d0, properties=properties@entry=0x7ffdd03eb718, properties2=properties2@entry=0x7ffdd03eb71c) at /usr/src/debug/kwindowsystem-5.36.0/src/platforms/xcb/netwm.cpp:1887
#38 0x00007f97706348b5 in NETRootInfo::event(xcb_generic_event_t*, unsigned long*, int) (this=this@entry=0xb3145ab2c0, ev=ev@entry=0xb3164e74d0, properties=properties@entry=0x7ffdd03eb7a0, properties_size=properties_size@entry=5) at /usr/src/debug/kwindowsystem-5.36.0/src/platforms/xcb/netwm.cpp:1672
#39 0x00007f975633601d in NETEventFilter::nativeEventFilter(xcb_generic_event_t*) (this=0xb3145ab2c0, ev=0xb3164e74d0) at /usr/src/debug/kwindowsystem-5.36.0/src/platforms/xcb/kwindowsystem.cpp:237
#40 0x00007f976db9beaf in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#41 0x00007f97605519d0 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#42 0x00007f976055261c in QXcbConnection::processXcbEvents() () at /usr/lib64/libQt5XcbQpa.so.5
#43 0x00007f976dbccc42 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#44 0x00007f976ebad93c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#45 0x00007f976ebb4cb4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#46 0x00007f976db9ed48 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#47 0x00007f976dba1335 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#48 0x00007f976dbf5013 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /usr/lib64/libQt5Core.so.5
#49 0x00007f976830bb67 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#50 0x00007f976830bd98 in  () at /usr/lib64/libglib-2.0.so.0
#51 0x00007f976830be2c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#52 0x00007f976dbf468f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#53 0x00007f976db9d35a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#54 0x00007f976dba5be4 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#55 0x000000b312f01cf2 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.10.4/shell/main.cpp:166

Possible duplicates by query: bug 383647, bug 383282, bug 382302, bug 381974, bug 381800.

Reported using DrKonqi