Bug 374953

Application: plasmashell (5.8.3)
 (Compiled from sources)
Qt Version: 5.6.2
Frameworks Version: 5.26.0
Operating System: Linux 4.4.39-gentoo x86_64
Distribution (Platform): Gentoo Packages

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

graphs.off()

in Rstudio to close all the open plot windows. Plasma crashed and then restarted itself.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa3cf1c6840 (LWP 17875))]

Thread 8 (Thread 0x7fa3ba920700 (LWP 17894)):
#0  0x00007fa3c9b4d20d in poll () from /lib64/libc.so.6
#1  0x00007fa3cdb9f8f2 in _xcb_conn_wait () from /usr/lib64/libxcb.so.1
#2  0x00007fa3cdba16df in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007fa3bc655569 in QXcbEventReader::run() () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007fa3ca207a2c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fa3c9351454 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fa3c9b5628d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fa3b90e4700 (LWP 17895)):
#0  0x00007fa3c5c22aa9 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fa3c5bdde90 in g_main_context_acquire () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fa3c5bdee15 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fa3c5bdf06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fa3ca3f583c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fa3ca3a7c8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007fa3ca2032e4 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007fa3cf304235 in QDBusConnectionManager::run() () from /usr/lib64/libQt5DBus.so.5
#8  0x00007fa3ca207a2c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#9  0x00007fa3c9351454 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fa3c9b5628d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fa3b35ef700 (LWP 17902)):
#0  0x00007fa3c9b4d20d in poll () from /lib64/libc.so.6
#1  0x00007fa3c5bdef5c in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fa3c5bdf06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fa3ca3f583c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007fa3ca3a7c8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fa3ca2032e4 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007fa3cca45355 in QQmlThreadPrivate::run() () from /usr/lib64/libQt5Qml.so.5
#7  0x00007fa3ca207a2c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007fa3c9351454 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fa3c9b5628d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fa3b1651700 (LWP 18022)):
#0  0x00007fa3c5bde961 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fa3c5bdef00 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fa3c5bdf06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fa3ca3f583c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007fa3ca3a7c8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fa3ca2032e4 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007fa3cca45355 in QQmlThreadPrivate::run() () from /usr/lib64/libQt5Qml.so.5
#7  0x00007fa3ca207a2c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007fa3c9351454 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fa3c9b5628d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fa3a77bd700 (LWP 18034)):
#0  0x00007fa3c935702f in pthread_cond_wait () from /lib64/libpthread.so.0
#1  0x00007fa3cec34864 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib64/libQt5Script.so.5
#2  0x00007fa3cec348a9 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib64/libQt5Script.so.5
#3  0x00007fa3c9351454 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fa3c9b5628d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fa3170f1700 (LWP 18042)):
#0  0x00007fa3c9b4d20d in poll () from /lib64/libc.so.6
#1  0x00007fa3c5bdef5c in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fa3c5bdf06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fa3ca3f583c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007fa3ca3a7c8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fa3ca2032e4 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007fa3cd3cbeb6 in QQuickPixmapReader::run() () from /usr/lib64/libQt5Quick.so.5
#7  0x00007fa3ca207a2c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#8  0x00007fa3c9351454 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fa3c9b5628d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fa30b2d5700 (LWP 18133)):
#0  0x00007fa3c5c22ac4 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fa3c5bde799 in g_main_context_query () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fa3c5bdeed7 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fa3c5bdf06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fa3ca3f583c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007fa3ca3a7c8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007fa3ca2032e4 in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007fa30d0dc697 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#8  0x00007fa3ca207a2c in QThreadPrivate::start(void*) () from /usr/lib64/libQt5Core.so.5
#9  0x00007fa3c9351454 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fa3c9b5628d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fa3cf1c6840 (LWP 17875)):
[KCrash Handler]
#6  0x00007fa3ca379575 in QSortFilterProxyModelPrivate::updateChildrenMapping(QModelIndex const&, QSortFilterProxyModelPrivate::Mapping*, Qt::Orientation, int, int, int, bool) () from /usr/lib64/libQt5Core.so.5
#7  0x00007fa3ca3798a7 in QSortFilterProxyModelPrivate::source_items_removed(QModelIndex const&, int, int, Qt::Orientation) [clone .part.97] () from /usr/lib64/libQt5Core.so.5
#8  0x00007fa3ca3815b9 in QSortFilterProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Core.so.5
#9  0x00007fa3ca3d012a in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#10 0x00007fa3ca43e484 in QAbstractItemModel::rowsRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/lib64/libQt5Core.so.5
#11 0x00007fa3ca35dc34 in QAbstractItemModel::endRemoveRows() () from /usr/lib64/libQt5Core.so.5
#12 0x00007fa315021c7b in TaskManager::TaskGroupingProxyModel::Private::sourceRowsAboutToBeRemoved(QModelIndex const&, int, int) [clone .part.67] () from /usr/lib64/libtaskmanager.so.6
#13 0x00007fa315024c39 in TaskManager::TaskGroupingProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libtaskmanager.so.6
#14 0x00007fa3ca3d012a in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#15 0x00007fa3ca43e414 in QAbstractItemModel::rowsAboutToBeRemoved(QModelIndex const&, int, int, QAbstractItemModel::QPrivateSignal) () from /usr/lib64/libQt5Core.so.5
#16 0x00007fa3ca35d4d3 in QAbstractItemModel::beginRemoveRows(QModelIndex const&, int, int) () from /usr/lib64/libQt5Core.so.5
#17 0x00007fa3ca378595 in QSortFilterProxyModelPrivate::remove_proxy_interval(QVector<int>&, QVector<int>&, int, int, QModelIndex const&, Qt::Orientation, bool) () from /usr/lib64/libQt5Core.so.5
#18 0x00007fa3ca37b827 in QSortFilterProxyModelPrivate::remove_source_items(QVector<int>&, QVector<int>&, QVector<int> const&, QModelIndex const&, Qt::Orientation, bool) () from /usr/lib64/libQt5Core.so.5
#19 0x00007fa3ca380ddf in QSortFilterProxyModelPrivate::_q_sourceDataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /usr/lib64/libQt5Core.so.5
#20 0x00007fa3ca3814a8 in QSortFilterProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Core.so.5
#21 0x00007fa3ca3d012a in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#22 0x00007fa3ca43e17c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /usr/lib64/libQt5Core.so.5
#23 0x00007fa314c2e882 in KConcatenateRowsProxyModelPrivate::slotDataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /usr/lib64/libKF5ItemModels.so.5
#24 0x00007fa314c2fab8 in KConcatenateRowsProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libKF5ItemModels.so.5
#25 0x00007fa3ca3d012a in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#26 0x00007fa3ca43e17c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /usr/lib64/libQt5Core.so.5
#27 0x00007fa3ca373add in QIdentityProxyModelPrivate::_q_sourceDataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /usr/lib64/libQt5Core.so.5
#28 0x00007fa3ca3749e8 in QIdentityProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib64/libQt5Core.so.5
#29 0x00007fa3ca3d012a in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#30 0x00007fa3ca43e17c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () from /usr/lib64/libQt5Core.so.5
#31 0x00007fa31503ae57 in TaskManager::XWindowTasksModel::Private::dataChanged(unsigned long long, QVector<int> const&) () from /usr/lib64/libtaskmanager.so.6
#32 0x00007fa31503dbfa in TaskManager::XWindowTasksModel::Private::windowChanged(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>) () from /usr/lib64/libtaskmanager.so.6
#33 0x00007fa31503dc9b in QtPrivate::QFunctorSlotObject<TaskManager::XWindowTasksModel::Private::init()::{lambda(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>)#9}, 3, QtPrivate::List<unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2> >, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) () from /usr/lib64/libtaskmanager.so.6
#34 0x00007fa3ca3d0792 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5
#35 0x00007fa3cc54b3d8 in KWindowSystem::windowChanged(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>) () from /usr/lib64/libKF5WindowSystem.so.5
#36 0x00007fa3b84cd672 in NETEventFilter::nativeEventFilter(xcb_generic_event_t*) () from /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#37 0x00007fa3ca3a6e3d in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () from /usr/lib64/libQt5Core.so.5
#38 0x00007fa3bc653764 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () from /usr/lib64/libQt5XcbQpa.so.5
#39 0x00007fa3bc655993 in QXcbConnection::processXcbEvents() () from /usr/lib64/libQt5XcbQpa.so.5
#40 0x00007fa3ca3d166a in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#41 0x00007fa3cac3e98c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#42 0x00007fa3cac430b0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#43 0x00007fa3ca3a90f0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#44 0x00007fa3ca3ab323 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#45 0x00007fa3ca3f57b3 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/libQt5Core.so.5
#46 0x00007fa3c5bdecdd in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#47 0x00007fa3c5bdefc0 in g_main_context_iterate.isra () from /usr/lib64/libglib-2.0.so.0
#48 0x00007fa3c5bdf06c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#49 0x00007fa3ca3f5827 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#50 0x00007fa3ca3a7c8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#51 0x00007fa3ca3af74c in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#52 0x000000000041c15d in main ()

Possible duplicates by query: bug 374349, bug 373955, bug 373875, bug 373600, bug 373265.

Reported using DrKonqi