Bug 373214

Application: plasmashell (5.8.3)

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.4.27-2-default x86_64
Distribution: "openSUSE Leap 42.2"

-- Information about the crash:
- What I was doing when the application crashed:
I changed desktop and moved mouse to top edge. In top edge is auto-hiding panel. Just countours appeared of popup-panel, plasma restarted and notification about crash appeared.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6faf488900 (LWP 3912))]

Thread 9 (Thread 0x7f6edeea5700 (LWP 4066)):
#0  0x00007f6fa8bad49d in poll () from /lib64/libc.so.6
#1  0x00007f6fa5275314 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f6ed8004cd0, timeout=2210156, context=0x7f6ed8000990) at gmain.c:4135
#2  g_main_context_iterate (context=context@entry=0x7f6ed8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3835
#3  0x00007f6fa527542c in g_main_context_iteration (context=0x7f6ed8000990, may_block=1) at gmain.c:3901
#4  0x00007f6fa94b932b in QEventDispatcherGlib::processEvents (this=0x7f6ed80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f6fa9466fdb in QEventLoop::exec (this=this@entry=0x7f6edeea4c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f6fa92a1f1a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#7  0x00007f6ee02cd8f7 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#8  0x00007f6fa92a69e9 in QThreadPrivate::start (arg=0x4dc99a0) at thread/qthread_unix.cpp:341
#9  0x00007f6fa83b6734 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f6fa8bb5d3d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f6ef17ce700 (LWP 4036)):
#0  0x00007f6fa8bad49d in poll () from /lib64/libc.so.6
#1  0x00007f6fa5275314 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f6eec002f20, timeout=-1, context=0x7f6eec000990) at gmain.c:4135
#2  g_main_context_iterate (context=context@entry=0x7f6eec000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3835
#3  0x00007f6fa527542c in g_main_context_iteration (context=0x7f6eec000990, may_block=1) at gmain.c:3901
#4  0x00007f6fa94b932b in QEventDispatcherGlib::processEvents (this=0x7f6eec0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f6fa9466fdb in QEventLoop::exec (this=this@entry=0x7f6ef17cdc70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f6fa92a1f1a in QThread::exec (this=this@entry=0x1cc1940) at thread/qthread.cpp:500
#7  0x00007f6fad130632 in QQuickPixmapReader::run (this=0x1cc1940) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/util/qquickpixmapcache.cpp:817
#8  0x00007f6fa92a69e9 in QThreadPrivate::start (arg=0x1cc1940) at thread/qthread_unix.cpp:341
#9  0x00007f6fa83b6734 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f6fa8bb5d3d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f6efffff700 (LWP 4035)):
#0  0x00007f6fa8bad49d in poll () from /lib64/libc.so.6
#1  0x00007f6fa5275314 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f6ef8003070, timeout=9169, context=0x7f6ef8000990) at gmain.c:4135
#2  g_main_context_iterate (context=context@entry=0x7f6ef8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3835
#3  0x00007f6fa527542c in g_main_context_iteration (context=0x7f6ef8000990, may_block=1) at gmain.c:3901
#4  0x00007f6fa94b932b in QEventDispatcherGlib::processEvents (this=0x7f6ef80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f6fa9466fdb in QEventLoop::exec (this=this@entry=0x7f6effffecd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f6fa92a1f1a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#7  0x00007f6fa92a69e9 in QThreadPrivate::start (arg=0x176cd10) at thread/qthread_unix.cpp:341
#8  0x00007f6fa83b6734 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f6fa8bb5d3d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f6f8ae08700 (LWP 4034)):
#0  0x00007f6fa8bad49d in poll () from /lib64/libc.so.6
#1  0x00007f6fa5275314 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f6f00003070, timeout=-1, context=0x7f6f00000990) at gmain.c:4135
#2  g_main_context_iterate (context=context@entry=0x7f6f00000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3835
#3  0x00007f6fa527542c in g_main_context_iteration (context=0x7f6f00000990, may_block=1) at gmain.c:3901
#4  0x00007f6fa94b932b in QEventDispatcherGlib::processEvents (this=0x7f6f000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f6fa9466fdb in QEventLoop::exec (this=this@entry=0x7f6f8ae07cb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f6fa92a1f1a in QThread::exec (this=this@entry=0x12974e0) at thread/qthread.cpp:500
#7  0x00007f6fac5ad9b8 in QQmlThreadPrivate::run (this=0x12974e0) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f6fa92a69e9 in QThreadPrivate::start (arg=0x12974e0) at thread/qthread_unix.cpp:341
#9  0x00007f6fa83b6734 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f6fa8bb5d3d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f6f8bdc5700 (LWP 4033)):
#0  0x00007f6fa83bb0af in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f6faeb6993b in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f6faee4fea0 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f6faeb69969 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f6fa83b6734 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f6fa8bb5d3d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f6f91634700 (LWP 4019)):
#0  0x00007f6fa8bad49d in poll () from /lib64/libc.so.6
#1  0x00007f6fa5275314 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f6f84002e70, timeout=-1, context=0x7f6f84000990) at gmain.c:4135
#2  g_main_context_iterate (context=context@entry=0x7f6f84000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3835
#3  0x00007f6fa527542c in g_main_context_iteration (context=0x7f6f84000990, may_block=1) at gmain.c:3901
#4  0x00007f6fa94b932b in QEventDispatcherGlib::processEvents (this=0x7f6f840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#5  0x00007f6fa9466fdb in QEventLoop::exec (this=this@entry=0x7f6f91633cb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f6fa92a1f1a in QThread::exec (this=this@entry=0x1277e50) at thread/qthread.cpp:500
#7  0x00007f6fac5ad9b8 in QQmlThreadPrivate::run (this=0x1277e50) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/ftw/qqmlthread.cpp:141
#8  0x00007f6fa92a69e9 in QThreadPrivate::start (arg=0x1277e50) at thread/qthread_unix.cpp:341
#9  0x00007f6fa83b6734 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f6fa8bb5d3d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f6f9307b700 (LWP 3991)):
#0  g_mutex_unlock (mutex=0x7f6f8c000990) at gthread-posix.c:1347
#1  0x00007f6fa52752be in g_main_context_iterate (context=context@entry=0x7f6f8c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3842
#2  0x00007f6fa527542c in g_main_context_iteration (context=0x7f6f8c000990, may_block=1) at gmain.c:3901
#3  0x00007f6fa94b932b in QEventDispatcherGlib::processEvents (this=0x7f6f8c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007f6fa9466fdb in QEventLoop::exec (this=this@entry=0x7f6f9307aca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f6fa92a1f1a in QThread::exec (this=this@entry=0x7f6faa28ace0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500
#6  0x00007f6faa0221d5 in QDBusConnectionManager::run (this=0x7f6faa28ace0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:189
#7  0x00007f6fa92a69e9 in QThreadPrivate::start (arg=0x7f6faa28ace0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:341
#8  0x00007f6fa83b6734 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f6fa8bb5d3d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f6f989dd700 (LWP 3927)):
#0  0x00007f6fa8bad49d in poll () from /lib64/libc.so.6
#1  0x00007f6fadae43e2 in poll (__timeout=-1, __nfds=1, __fds=0x7f6f989dcbc0) at /usr/include/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x11bd840, cond=cond@entry=0x11bd880, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:459
#3  0x00007f6fadae5fcf in xcb_wait_for_event (c=0x11bd840) at xcb_in.c:693
#4  0x00007f6f9ad33839 in QXcbEventReader::run (this=0x11c7f10) at qxcbconnection.cpp:1325
#5  0x00007f6fa92a69e9 in QThreadPrivate::start (arg=0x11c7f10) at thread/qthread_unix.cpp:341
#6  0x00007f6fa83b6734 in start_thread () from /lib64/libpthread.so.0
#7  0x00007f6fa8bb5d3d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f6faf488900 (LWP 3912)):
[KCrash Handler]
#6  QSortFilterProxyModelPrivate::updateChildrenMapping (this=this@entry=0x3cd7300, source_parent=..., parent_mapping=parent_mapping@entry=0x77fbac0, start=start@entry=0, end=end@entry=0, delta_item_count=delta_item_count@entry=1, remove=remove@entry=true, orient=Qt::Vertical) at itemmodels/qsortfilterproxymodel.cpp:969
#7  0x00007f6fa943448f in QSortFilterProxyModelPrivate::source_items_removed (orient=Qt::Vertical, end=<optimized out>, start=0, source_parent=..., this=0x3cd7300) at itemmodels/qsortfilterproxymodel.cpp:911
#8  QSortFilterProxyModelPrivate::_q_sourceRowsRemoved (this=0x3cd7300, source_parent=..., start=0, end=<optimized out>) at itemmodels/qsortfilterproxymodel.cpp:1416
#9  0x00007f6fa943b329 in QSortFilterProxyModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qsortfilterproxymodel.cpp:211
#10 0x00007f6fa9492bb1 in QMetaObject::activate (sender=sender@entry=0x3cd6a40, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7ffc5ffd4cf0) at kernel/qobject.cpp:3730
#11 0x00007f6fa9493717 in QMetaObject::activate (sender=sender@entry=0x3cd6a40, m=m@entry=0x7f6fa98aeca0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7ffc5ffd4cf0) at kernel/qobject.cpp:3595
#12 0x00007f6fa9509274 in QAbstractItemModel::rowsRemoved (this=this@entry=0x3cd6a40, _t1=..., _t2=0, _t3=0) at .moc/moc_qabstractitemmodel.cpp:615
#13 0x00007f6fa9417b21 in QAbstractItemModel::endRemoveRows (this=0x3cd6a40) at itemmodels/qabstractitemmodel.cpp:2678
#14 0x00007f6ee9e94fff in TaskManager::TaskGroupingProxyModel::Private::sourceRowsAboutToBeRemoved(QModelIndex const&, int, int) () from /usr/lib64/libtaskmanager.so.6
#15 0x00007f6ee9e97b69 in ?? () from /usr/lib64/libtaskmanager.so.6
#16 0x00007f6fa9492bb1 in QMetaObject::activate (sender=sender@entry=0x3d000e0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7ffc5ffd5020) at kernel/qobject.cpp:3730
#17 0x00007f6fa9493717 in QMetaObject::activate (sender=sender@entry=0x3d000e0, m=m@entry=0x7f6fa98aeca0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7ffc5ffd5020) at kernel/qobject.cpp:3595
#18 0x00007f6fa9509224 in QAbstractItemModel::rowsAboutToBeRemoved (this=this@entry=0x3d000e0, _t1=..., _t2=_t2@entry=0, _t3=_t3@entry=11) at .moc/moc_qabstractitemmodel.cpp:608
#19 0x00007f6fa94172a4 in QAbstractItemModel::beginRemoveRows (this=0x3d000e0, parent=..., first=0, last=11) at itemmodels/qabstractitemmodel.cpp:2661
#20 0x00007f6fa9435e0d in QSortFilterProxyModelPrivate::remove_proxy_interval (emit_signal=true, orient=Qt::Vertical, proxy_parent=..., proxy_end=11, proxy_start=0, proxy_to_source=..., source_to_proxy=..., this=0x3d03c20) at itemmodels/qsortfilterproxymodel.cpp:577
#21 QSortFilterProxyModelPrivate::remove_source_items (this=this@entry=0x3d03c20, source_to_proxy=..., proxy_to_source=..., source_items=..., source_parent=..., orient=orient@entry=Qt::Vertical, emit_signal=emit_signal@entry=true) at itemmodels/qsortfilterproxymodel.cpp:559
#22 0x00007f6fa9439acd in QSortFilterProxyModelPrivate::handle_filter_changed (orient=Qt::Vertical, source_parent=..., proxy_to_source=..., source_to_proxy=..., this=0x3d03c20) at itemmodels/qsortfilterproxymodel.cpp:1143
#23 QSortFilterProxyModelPrivate::filter_changed (this=0x3d03c20, source_parent=...) at itemmodels/qsortfilterproxymodel.cpp:1075
#24 0x00007f6fa943a521 in QSortFilterProxyModel::invalidateFilter (this=<optimized out>) at itemmodels/qsortfilterproxymodel.cpp:2604
#25 0x00007f6ee9e91565 in TaskManager::TaskFilterProxyModel::setVirtualDesktop(unsigned int) () from /usr/lib64/libtaskmanager.so.6
#26 0x00007f6ee9eb86dc in ?? () from /usr/lib64/libtaskmanager.so.6
#27 0x00007f6ee9eb960b in TaskManager::TasksModel::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libtaskmanager.so.6
#28 0x00007f6fac51be6c in QQmlVMEMetaObject::metaCall (this=0x3cd7f50, o=<optimized out>, c=QMetaObject::WriteProperty, _id=14, a=0x7ffc5ffd54a0) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/qqmlvmemetaobject.cpp:876
#29 0x00007f6fac5997db in QQmlBinding::write (this=this@entry=0x3d03ef0, core=..., result=..., isUndefined=<optimized out>, flags=...) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/qqmlbinding.cpp:242
#30 0x00007f6fac59b24a in QQmlBinding::update (this=0x3d03ef0, flags=...) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/qqmlbinding.cpp:191
#31 0x00007f6fac59b39e in QQmlBinding::expressionChanged (this=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/qqmlbinding.cpp:398
#32 0x00007f6fac572107 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/qqmlnotifier.cpp:94
#33 0x00007f6fac520294 in QQmlData::signalEmitted (object=0x3cc8a60, index=3, a=0x0) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/qqmlengine.cpp:772
#34 0x00007f6fa9492953 in QMetaObject::activate (sender=0x3cc8a60, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3616
#35 0x00007f6fa94931c3 in QtPrivate::QSlotObjectBase::call (a=0x7ffc5ffd71c0, r=0x3cc8a60, this=0x3cc61b0) at ../../src/corelib/kernel/qobject_impl.h:124
#36 QMetaObject::activate (sender=0x7f6fac2d8c00, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffc5ffd71c0) at kernel/qobject.cpp:3715
#37 0x00007f6fac0ca27e in KWindowSystem::currentDesktopChanged(int) () from /usr/lib64/libKF5WindowSystem.so.5
#38 0x00007f6f91a553e0 in ?? () from /usr/lib64/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#39 0x00007f6fa9466270 in QAbstractEventDispatcher::filterNativeEvent (this=<optimized out>, eventType=..., message=message@entry=0x7f6f9401e740, result=result@entry=0x7ffc5ffd72f8) at kernel/qabstracteventdispatcher.cpp:460
#40 0x00007f6f9ad31be4 in QXcbConnection::handleXcbEvent (this=this@entry=0x11bc080, event=event@entry=0x7f6f9401e740) at qxcbconnection.cpp:1091
#41 0x00007f6f9ad33c3b in QXcbConnection::processXcbEvents (this=0x11bc080) at qxcbconnection.cpp:1723
#42 0x00007f6fa9494166 in QObject::event (this=0x11bc080, e=<optimized out>) at kernel/qobject.cpp:1256
#43 0x00007f6faa3f0e3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#44 0x00007f6faa3f549a in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#45 0x00007f6fa9468fc5 in QCoreApplication::notifyInternal2 (receiver=0x11bc080, event=event@entry=0x7f6f94016200) at kernel/qcoreapplication.cpp:1015
#46 0x00007f6fa946adaa in QCoreApplication::sendEvent (event=0x7f6f94016200, receiver=<optimized out>) at kernel/qcoreapplication.h:225
#47 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x11a20b0) at kernel/qcoreapplication.cpp:1650
#48 0x00007f6fa946b358 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1508
#49 0x00007f6fa94b9c83 in postEventSourceDispatch (s=0x11ebb90) at kernel/qeventdispatcher_glib.cpp:270
#50 0x00007f6fa5275134 in g_main_dispatch (context=0x7f6f940016f0) at gmain.c:3154
#51 g_main_context_dispatch (context=context@entry=0x7f6f940016f0) at gmain.c:3769
#52 0x00007f6fa5275388 in g_main_context_iterate (context=context@entry=0x7f6f940016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3840
#53 0x00007f6fa527542c in g_main_context_iteration (context=0x7f6f940016f0, may_block=1) at gmain.c:3901
#54 0x00007f6fa94b930c in QEventDispatcherGlib::processEvents (this=0x1203c70, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#55 0x00007f6fa9466fdb in QEventLoop::exec (this=this@entry=0x7ffc5ffd7980, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#56 0x00007f6fa946eec6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#57 0x000000000041eacf in main (argc=2, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.8.3/shell/main.cpp:166

Possible duplicates by query: bug 372827, bug 371544, bug 367701.

Reported using DrKonqi