Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-38-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I started a vpn through network conections in the system tray
- Unusual behavior I noticed:
The whole taskbar crashed - then to be auto-restarted (sometimes, rarely, it does not restart and a logout is needed to get the taskbar back).

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fc8814888c0 (LWP 2248))]

Thread 8 (Thread 0x7fc7ba8d0700 (LWP 2272)):
#0  0x00007fc87bb98e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc87892e39c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc87892e4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc87c4c5a9b in QEventDispatcherGlib::processEvents (this=0x7fc7b40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fc87c46cdea in QEventLoop::exec (this=this@entry=0x7fc7ba8cfcc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fc87c2898a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fc7bcdae7d7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fc87c28e84e in QThreadPrivate::start (arg=0x4f27180) at thread/qthread_unix.cpp:331
#8  0x00007fc87b37b6fa in start_thread (arg=0x7fc7ba8d0700) at pthread_create.c:333
#9  0x00007fc87bba4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fc7cbfff700 (LWP 2257)):
#0  0x00007fc87892e31c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc87892e4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc87c4c5a9b in QEventDispatcherGlib::processEvents (this=0x7fc7c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#3  0x00007fc87c46cdea in QEventLoop::exec (this=this@entry=0x7fc7cbffec90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007fc87c2898a4 in QThread::exec (this=this@entry=0x298e4b0) at thread/qthread.cpp:503
#5  0x00007fc87f4b7ed6 in QQuickPixmapReader::run (this=0x298e4b0) at util/qquickpixmapcache.cpp:817
#6  0x00007fc87c28e84e in QThreadPrivate::start (arg=0x298e4b0) at thread/qthread_unix.cpp:331
#7  0x00007fc87b37b6fa in start_thread (arg=0x7fc7cbfff700) at pthread_create.c:333
#8  0x00007fc87bba4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fc852fbc700 (LWP 2256)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc880ed6bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fc880ed6c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fc87b37b6fa in start_thread (arg=0x7fc852fbc700) at pthread_create.c:333
#4  0x00007fc87bba4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fc858a81700 (LWP 2255)):
#0  0x00007fc878972ac9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fc87892dddc in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc87892e340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc87892e4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc87c4c5a9b in QEventDispatcherGlib::processEvents (this=0x7fc84c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fc87c46cdea in QEventLoop::exec (this=this@entry=0x7fc858a80ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fc87c2898a4 in QThread::exec (this=this@entry=0x27093e0) at thread/qthread.cpp:503
#7  0x00007fc87eb313c5 in QQmlThreadPrivate::run (this=0x27093e0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fc87c28e84e in QThreadPrivate::start (arg=0x27093e0) at thread/qthread_unix.cpp:331
#9  0x00007fc87b37b6fa in start_thread (arg=0x7fc858a81700) at pthread_create.c:333
#10 0x00007fc87bba4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fc85a909700 (LWP 2254)):
#0  0x00007fc87c4c4e1b in timerSourcePrepare (source=0x7fc854002c70, timeout=0x7fc85a908b24) at kernel/qeventdispatcher_glib.cpp:154
#1  0x00007fc87892d92d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc87892e2cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc87892e4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fc87c4c5a9b in QEventDispatcherGlib::processEvents (this=0x7fc8540008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007fc87c46cdea in QEventLoop::exec (this=this@entry=0x7fc85a908ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fc87c2898a4 in QThread::exec (this=this@entry=0x260e9b0) at thread/qthread.cpp:503
#7  0x00007fc87eb313c5 in QQmlThreadPrivate::run (this=0x260e9b0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fc87c28e84e in QThreadPrivate::start (arg=0x260e9b0) at thread/qthread_unix.cpp:331
#9  0x00007fc87b37b6fa in start_thread (arg=0x7fc85a909700) at pthread_create.c:333
#10 0x00007fc87bba4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fc869f9c700 (LWP 2252)):
#0  0x00007fc87bb98e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc87892e39c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc87892e4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc87c4c5a9b in QEventDispatcherGlib::processEvents (this=0x7fc85c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fc87c46cdea in QEventLoop::exec (this=this@entry=0x7fc869f9bce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fc87c2898a4 in QThread::exec (this=this@entry=0x22eb1e0) at thread/qthread.cpp:503
#6  0x00007fc87eb313c5 in QQmlThreadPrivate::run (this=0x22eb1e0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fc87c28e84e in QThreadPrivate::start (arg=0x22eb1e0) at thread/qthread_unix.cpp:331
#8  0x00007fc87b37b6fa in start_thread (arg=0x7fc869f9c700) at pthread_create.c:333
#9  0x00007fc87bba4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fc86c7aa700 (LWP 2250)):
#0  0x00007fc87bb98e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc87fc5dc62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fc87fc5f8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fc86e8f8629 in QXcbEventReader::run (this=0x2214870) at qxcbconnection.cpp:1253
#4  0x00007fc87c28e84e in QThreadPrivate::start (arg=0x2214870) at thread/qthread_unix.cpp:331
#5  0x00007fc87b37b6fa in start_thread (arg=0x7fc86c7aa700) at pthread_create.c:333
#6  0x00007fc87bba4b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fc8814888c0 (LWP 2248)):
[KCrash Handler]
#6  0x00007fc87c49e7f5 in QMetaObject::activate (sender=sender@entry=0x5efb2b0, signal_index=6, argv=argv@entry=0x0) at kernel/qobject.cpp:3759
#7  0x00007fc87e901132 in VDMModelDelegateDataType::notify (this=<optimized out>, items=..., index=0, count=16, roles=...) at util/qqmladaptormodel.cpp:171
#8  0x00007fc87eb72ada in QQmlAdaptorModel::notify (roles=..., count=16, index=0, items=..., this=0x549f808) at ../../include/QtQml/5.5.1/QtQml/private/../../../../../src/qml/util/qqmladaptormodel_p.h:118
#9  QQmlDelegateModel::_q_itemsChanged (this=this@entry=0x549f140, index=index@entry=0, count=16, roles=...) at types/qqmldelegatemodel.cpp:1144
#10 0x00007fc87eb776f2 in QQmlDelegateModel::_q_layoutChanged (this=0x549f140, parents=..., hint=<optimized out>) at types/qqmldelegatemodel.cpp:1608
#11 0x00007fc87eb9a1af in QQmlDelegateModel::qt_static_metacall (_o=_o@entry=0x549f140, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=14, _a=_a@entry=0x7ffe89da9ff0) at .moc/moc_qqmldelegatemodel_p.cpp:205
#12 0x00007fc87eb9a968 in QQmlDelegateModel::qt_metacall (this=0x549f140, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x7ffe89da9ff0) at .moc/moc_qqmldelegatemodel_p.cpp:344
#13 0x00007fc87c49e180 in QMetaObject::activate (sender=sender@entry=0x53b2c70, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffe89da9ff0) at kernel/qobject.cpp:3728
#14 0x00007fc87c49e7d7 in QMetaObject::activate (sender=sender@entry=0x53b2c70, m=m@entry=0x7fc87c6b7ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffe89da9ff0) at kernel/qobject.cpp:3578
#15 0x00007fc87c51a1e6 in QAbstractItemModel::layoutChanged (this=this@entry=0x53b2c70, _t1=..., _t2=_t2@entry=QAbstractItemModel::VerticalSortHint) at .moc/moc_qabstractitemmodel.cpp:562
#16 0x00007fc87c43edea in QSortFilterProxyModelPrivate::_q_sourceDataChanged (this=<optimized out>, source_top_left=..., source_bottom_right=..., roles=...) at itemmodels/qsortfilterproxymodel.cpp:1207
#17 0x00007fc87c440898 in QSortFilterProxyModel::qt_static_metacall (_o=_o@entry=0x53b2c70, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=5, _a=_a@entry=0x7ffe89daa2f0) at .moc/moc_qsortfilterproxymodel.cpp:202
#18 0x00007fc87c49dfca in QMetaObject::activate (sender=sender@entry=0x5397790, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe89daa2f0) at kernel/qobject.cpp:3713
#19 0x00007fc87c49e7d7 in QMetaObject::activate (sender=sender@entry=0x5397790, m=m@entry=0x7fc87c6b7ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe89daa2f0) at kernel/qobject.cpp:3578
#20 0x00007fc87c51a0fc in QAbstractItemModel::dataChanged (this=this@entry=0x5397790, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:548
#21 0x00007fc7b914afbd in NetworkModel::updateItem (this=this@entry=0x5397790, item=item@entry=0x53d41d0) at /build/plasma-nm-0GjglL/plasma-nm-5.5.5/libs/models/networkmodel.cpp:566
#22 0x00007fc7b9150bbf in NetworkModel::addActiveConnection (this=this@entry=0x5397790, activeConnection=...) at /build/plasma-nm-0GjglL/plasma-nm-5.5.5/libs/models/networkmodel.cpp:294
#23 0x00007fc7b9151073 in NetworkModel::activeConnectionAdded (this=0x5397790, activeConnection=...) at /build/plasma-nm-0GjglL/plasma-nm-5.5.5/libs/models/networkmodel.cpp:589
#24 0x00007fc87c49de4f in QtPrivate::QSlotObjectBase::call (a=0x7ffe89daa5f0, r=0x5397790, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#25 QMetaObject::activate (sender=sender@entry=0x7fc7b91339a0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder>, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffe89daa5f0) at kernel/qobject.cpp:3698
#26 0x00007fc87c49e7d7 in QMetaObject::activate (sender=sender@entry=0x7fc7b91339a0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder>, m=m@entry=0x7fc7b9131800 <NetworkManager::Notifier::staticMetaObject>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7ffe89daa5f0) at kernel/qobject.cpp:3578
#27 0x00007fc7b8ee6f85 in NetworkManager::Notifier::activeConnectionAdded (this=this@entry=0x7fc7b91339a0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder>, _t1=...) at /build/networkmanager-qt-yYCvz8/networkmanager-qt-5.18.0/obj-x86_64-linux-gnu/src/moc_manager.cpp:422
#28 0x00007fc7b8e6d5a0 in NetworkManager::NetworkManagerPrivate::propertiesChanged (this=0x7fc7b91339a0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder>, changedProperties=...) at /build/networkmanager-qt-yYCvz8/networkmanager-qt-5.18.0/src/manager.cpp:696
#29 0x00007fc87c49de4f in QtPrivate::QSlotObjectBase::call (a=0x7ffe89daa900, r=0x7fc7b91339a0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder>, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#30 QMetaObject::activate (sender=sender@entry=0x7fc7b91339c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffe89daa900) at kernel/qobject.cpp:3698
#31 0x00007fc87c49e7d7 in QMetaObject::activate (sender=sender@entry=0x7fc7b91339c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, m=m@entry=0x7fc7b9131c80 <OrgFreedesktopNetworkManagerInterface::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffe89daa900) at kernel/qobject.cpp:3578
#32 0x00007fc7b8ef2210 in OrgFreedesktopNetworkManagerInterface::PropertiesChanged (_t1=..., this=0x7fc7b91339c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>) at /build/networkmanager-qt-yYCvz8/networkmanager-qt-5.18.0/obj-x86_64-linux-gnu/src/moc_nm-managerinterface.cpp:440
#33 OrgFreedesktopNetworkManagerInterface::qt_static_metacall (_o=_o@entry=0x7fc7b91339c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=3, _a=_a@entry=0x7ffe89daaaa0) at /build/networkmanager-qt-yYCvz8/networkmanager-qt-5.18.0/obj-x86_64-linux-gnu/src/moc_nm-managerinterface.cpp:206
#34 0x00007fc7b8ef89b0 in OrgFreedesktopNetworkManagerInterface::qt_metacall (this=0x7fc7b91339c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7ffe89daaaa0) at /build/networkmanager-qt-yYCvz8/networkmanager-qt-5.18.0/obj-x86_64-linux-gnu/src/moc_nm-managerinterface.cpp:389
#35 0x00007fc8815ce913 in QDBusConnectionPrivate::deliverCall (this=0x7fc84c498f20, object=0x7fc7b91339c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, msg=..., metaTypes=..., slotIdx=9) at qdbusintegrator.cpp:978
#36 0x00007fc87c49eea1 in QObject::event (this=0x7fc7b91339c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, e=<optimized out>) at kernel/qobject.cpp:1239
#37 0x00007fc87cf7205c in QApplicationPrivate::notify_helper (this=this@entry=0x21fd6a0, receiver=receiver@entry=0x7fc7b91339c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, e=e@entry=0x60ed6d0) at kernel/qapplication.cpp:3716
#38 0x00007fc87cf77516 in QApplication::notify (this=0x7ffe89dab1c0, receiver=0x7fc7b91339c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, e=0x60ed6d0) at kernel/qapplication.cpp:3499
#39 0x00007fc87c46f62b in QCoreApplication::notifyInternal (this=0x7ffe89dab1c0, receiver=0x7fc7b91339c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, event=event@entry=0x60ed6d0) at kernel/qcoreapplication.cpp:965
#40 0x00007fc87c471a26 in QCoreApplication::sendEvent (event=0x60ed6d0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#41 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x21f3600) at kernel/qcoreapplication.cpp:1593
#42 0x00007fc87c471f08 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#43 0x00007fc87c4c5673 in postEventSourceDispatch (s=0x2239d90) at kernel/qeventdispatcher_glib.cpp:271
#44 0x00007fc87892e1a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007fc87892e400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007fc87892e4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007fc87c4c5a7f in QEventDispatcherGlib::processEvents (this=0x2232e60, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#48 0x00007fc87c46cdea in QEventLoop::exec (this=this@entry=0x7ffe89dab060, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#49 0x00007fc87c474e8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#50 0x00007fc87c7a8c3c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1542
#51 0x00007fc87cf6e495 in QApplication::exec () at kernel/qapplication.cpp:2976
#52 0x0000000000432d4a in main (argc=4, argv=<optimized out>) at /build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/main.cpp:181

Possible duplicates by query: bug 368677, bug 367823, bug 367087, bug 366228, bug 366193.

Reported using DrKonqi