Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-24-generic x86_64
Distribution: Ubuntu 16.04 LTS

-- Information about the crash:
I'm using an Ethernet connection with two VLANs on my laptop. When I disconnect and reconnect Ethernet I have to click the nm icon in the systray and then the Ethernet connection to reactivate. This reconnects correctly but causes Plasma to crash. After a few seconds Plasma restarts and everything is back to normal. This only happens when I reconnect to the Ethernet connection with VLANs. It does not happen with other networks like Wifi.

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 0x7f529fa2a8c0 (LWP 1336))]

Thread 8 (Thread 0x7f51d710c700 (LWP 1404)):
#0  0x00007f5296ed7444 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5296ed98cb in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5296eda2cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5296eda4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f529aa71a9b in QEventDispatcherGlib::processEvents (this=0x7f51d00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f529aa18dea in QEventLoop::exec (this=this@entry=0x7f51d710bcc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f529a8358a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f51d95ec7d7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f529a83a84e in QThreadPrivate::start (arg=0x43c9340) at thread/qthread_unix.cpp:331
#9  0x00007f52999276fa in start_thread (arg=0x7f51d710c700) at pthread_create.c:333
#10 0x00007f529a150b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f51ead13700 (LWP 1358)):
#0  0x00007f529a144e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5296eda39c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5296eda4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f529aa71a9b in QEventDispatcherGlib::processEvents (this=0x7f51e40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f529aa18dea in QEventLoop::exec (this=this@entry=0x7f51ead12c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f529a8358a4 in QThread::exec (this=this@entry=0x2041260) at thread/qthread.cpp:503
#6  0x00007f529da63ed6 in QQuickPixmapReader::run (this=0x2041260) at util/qquickpixmapcache.cpp:817
#7  0x00007f529a83a84e in QThreadPrivate::start (arg=0x2041260) at thread/qthread_unix.cpp:331
#8  0x00007f52999276fa in start_thread (arg=0x7f51ead13700) at pthread_create.c:333
#9  0x00007f529a150b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f52716eb700 (LWP 1353)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f529f482bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f529f482c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f52999276fa in start_thread (arg=0x7f52716eb700) at pthread_create.c:333
#4  0x00007f529a150b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f5273043700 (LWP 1352)):
#0  0x00007f529a1409cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f5296f1d740 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5296ed9e84 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5296eda340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5296eda4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f529aa71a9b in QEventDispatcherGlib::processEvents (this=0x7f526c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f529aa18dea in QEventLoop::exec (this=this@entry=0x7f5273042ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f529a8358a4 in QThread::exec (this=this@entry=0x1d8c580) at thread/qthread.cpp:503
#8  0x00007f529d0dd3c5 in QQmlThreadPrivate::run (this=0x1d8c580) at qml/ftw/qqmlthread.cpp:141
#9  0x00007f529a83a84e in QThreadPrivate::start (arg=0x1d8c580) at thread/qthread_unix.cpp:331
#10 0x00007f52999276fa in start_thread (arg=0x7f5273043700) at pthread_create.c:333
#11 0x00007f529a150b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f5278f44700 (LWP 1351)):
#0  0x00007f5296f1eae4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5296ed99b0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5296eda2cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5296eda4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f529aa71a9b in QEventDispatcherGlib::processEvents (this=0x7f52740008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f529aa18dea in QEventLoop::exec (this=this@entry=0x7f5278f43ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f529a8358a4 in QThread::exec (this=this@entry=0x1c78570) at thread/qthread.cpp:503
#7  0x00007f529d0dd3c5 in QQmlThreadPrivate::run (this=0x1c78570) at qml/ftw/qqmlthread.cpp:141
#8  0x00007f529a83a84e in QThreadPrivate::start (arg=0x1c78570) at thread/qthread_unix.cpp:331
#9  0x00007f52999276fa in start_thread (arg=0x7f5278f44700) at pthread_create.c:333
#10 0x00007f529a150b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f5283fff700 (LWP 1345)):
#0  0x00007f529a15ef92 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f5283ffea50) at ../sysdeps/unix/clock_gettime.c:93
#1  0x00007f529a8eac16 in qt_clock_gettime (ts=0x7f5283ffea50, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#2  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#4  0x00007f529aa6f529 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f527c002ed0) at kernel/qtimerinfo_unix.cpp:84
#5  0x00007f529aa6fa95 in QTimerInfoList::timerWait (this=0x7f527c002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:381
#6  0x00007f529aa70e7e in timerSourcePrepareHelper (timeout=0x7f5283ffeb24, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#7  timerSourcePrepare (source=<optimized out>, timeout=0x7f5283ffeb24) at kernel/qeventdispatcher_glib.cpp:160
#8  0x00007f5296ed992d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f5296eda2cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f5296eda4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f529aa71a9b in QEventDispatcherGlib::processEvents (this=0x7f527c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#12 0x00007f529aa18dea in QEventLoop::exec (this=this@entry=0x7f5283ffece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#13 0x00007f529a8358a4 in QThread::exec (this=this@entry=0x1971590) at thread/qthread.cpp:503
#14 0x00007f529d0dd3c5 in QQmlThreadPrivate::run (this=0x1971590) at qml/ftw/qqmlthread.cpp:141
#15 0x00007f529a83a84e in QThreadPrivate::start (arg=0x1971590) at thread/qthread_unix.cpp:331
#16 0x00007f52999276fa in start_thread (arg=0x7f5283fff700) at pthread_create.c:333
#17 0x00007f529a150b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f528ad4c700 (LWP 1340)):
#0  0x00007f529a144e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f529e209c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f529e20b8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f528ce9a629 in QXcbEventReader::run (this=0x1897880) at qxcbconnection.cpp:1253
#4  0x00007f529a83a84e in QThreadPrivate::start (arg=0x1897880) at thread/qthread_unix.cpp:331
#5  0x00007f52999276fa in start_thread (arg=0x7f528ad4c700) at pthread_create.c:333
#6  0x00007f529a150b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f529fa2a8c0 (LWP 1336)):
[KCrash Handler]
#6  QMetaObject::methodOffset (this=this@entry=0x0) at kernel/qmetaobject.cpp:382
#7  0x00007f529aa4a80b in QMetaObject::activate (sender=sender@entry=0x7e7e920, signal_index=6, argv=argv@entry=0x0) at kernel/qobject.cpp:3760
#8  0x00007f529cead132 in VDMModelDelegateDataType::notify (this=<optimized out>, items=..., index=0, count=31, roles=...) at util/qqmladaptormodel.cpp:171
#9  0x00007f529d11eada in QQmlAdaptorModel::notify (roles=..., count=31, index=0, items=..., this=0x6225ec8) at ../../include/QtQml/5.5.1/QtQml/private/../../../../../src/qml/util/qqmladaptormodel_p.h:118
#10 QQmlDelegateModel::_q_itemsChanged (this=this@entry=0x6317400, index=index@entry=0, count=31, roles=...) at types/qqmldelegatemodel.cpp:1144
#11 0x00007f529d1236f2 in QQmlDelegateModel::_q_layoutChanged (this=0x6317400, parents=..., hint=<optimized out>) at types/qqmldelegatemodel.cpp:1608
#12 0x00007f529d1461af in QQmlDelegateModel::qt_static_metacall (_o=_o@entry=0x6317400, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=14, _a=_a@entry=0x7fffcba1f140) at .moc/moc_qqmldelegatemodel_p.cpp:205
#13 0x00007f529d146968 in QQmlDelegateModel::qt_metacall (this=0x6317400, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x7fffcba1f140) at .moc/moc_qqmldelegatemodel_p.cpp:344
#14 0x00007f529aa4a180 in QMetaObject::activate (sender=sender@entry=0x5b154c0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7fffcba1f140) at kernel/qobject.cpp:3728
#15 0x00007f529aa4a7d7 in QMetaObject::activate (sender=sender@entry=0x5b154c0, m=m@entry=0x7f529ac63ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7fffcba1f140) at kernel/qobject.cpp:3578
#16 0x00007f529aac61e6 in QAbstractItemModel::layoutChanged (this=this@entry=0x5b154c0, _t1=..., _t2=_t2@entry=QAbstractItemModel::VerticalSortHint) at .moc/moc_qabstractitemmodel.cpp:562
#17 0x00007f529a9eadea in QSortFilterProxyModelPrivate::_q_sourceDataChanged (this=<optimized out>, source_top_left=..., source_bottom_right=..., roles=...) at itemmodels/qsortfilterproxymodel.cpp:1207
#18 0x00007f529a9ec898 in QSortFilterProxyModel::qt_static_metacall (_o=_o@entry=0x5b154c0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=5, _a=_a@entry=0x7fffcba1f440) at .moc/moc_qsortfilterproxymodel.cpp:202
#19 0x00007f529aa49fca in QMetaObject::activate (sender=sender@entry=0x611bf70, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffcba1f440) at kernel/qobject.cpp:3713
#20 0x00007f529aa4a7d7 in QMetaObject::activate (sender=sender@entry=0x611bf70, m=m@entry=0x7f529ac63ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fffcba1f440) at kernel/qobject.cpp:3578
#21 0x00007f529aac60fc in QAbstractItemModel::dataChanged (this=this@entry=0x611bf70, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:548
#22 0x00007f51d5f05fbd in NetworkModel::updateItem (this=this@entry=0x611bf70, item=item@entry=0x51679c0) at /build/plasma-nm-0GjglL/plasma-nm-5.5.5/libs/models/networkmodel.cpp:566
#23 0x00007f51d5f0bbbf in NetworkModel::addActiveConnection (this=this@entry=0x611bf70, activeConnection=...) at /build/plasma-nm-0GjglL/plasma-nm-5.5.5/libs/models/networkmodel.cpp:294
#24 0x00007f51d5f0c073 in NetworkModel::activeConnectionAdded (this=0x611bf70, activeConnection=...) at /build/plasma-nm-0GjglL/plasma-nm-5.5.5/libs/models/networkmodel.cpp:589
#25 0x00007f529aa49e4f in QtPrivate::QSlotObjectBase::call (a=0x7fffcba1f740, r=0x611bf70, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#26 QMetaObject::activate (sender=sender@entry=0x7f51d5eee9a0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder>, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7fffcba1f740) at kernel/qobject.cpp:3698
#27 0x00007f529aa4a7d7 in QMetaObject::activate (sender=sender@entry=0x7f51d5eee9a0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder>, m=m@entry=0x7f51d5eec800 <NetworkManager::Notifier::staticMetaObject>, local_signal_index=local_signal_index@entry=10, argv=argv@entry=0x7fffcba1f740) at kernel/qobject.cpp:3578
#28 0x00007f51d5ca1f85 in NetworkManager::Notifier::activeConnectionAdded (this=this@entry=0x7f51d5eee9a0 <(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
#29 0x00007f51d5c285a0 in NetworkManager::NetworkManagerPrivate::propertiesChanged (this=0x7f51d5eee9a0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder>, changedProperties=...) at /build/networkmanager-qt-yYCvz8/networkmanager-qt-5.18.0/src/manager.cpp:696
#30 0x00007f529aa49e4f in QtPrivate::QSlotObjectBase::call (a=0x7fffcba1fa50, r=0x7f51d5eee9a0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder>, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#31 QMetaObject::activate (sender=sender@entry=0x7f51d5eee9c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7fffcba1fa50) at kernel/qobject.cpp:3698
#32 0x00007f529aa4a7d7 in QMetaObject::activate (sender=sender@entry=0x7f51d5eee9c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, m=m@entry=0x7f51d5eecc80 <OrgFreedesktopNetworkManagerInterface::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7fffcba1fa50) at kernel/qobject.cpp:3578
#33 0x00007f51d5cad210 in OrgFreedesktopNetworkManagerInterface::PropertiesChanged (_t1=..., this=0x7f51d5eee9c0 <(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
#34 OrgFreedesktopNetworkManagerInterface::qt_static_metacall (_o=_o@entry=0x7f51d5eee9c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=3, _a=_a@entry=0x7fffcba1fbf0) at /build/networkmanager-qt-yYCvz8/networkmanager-qt-5.18.0/obj-x86_64-linux-gnu/src/moc_nm-managerinterface.cpp:206
#35 0x00007f51d5cb39b0 in OrgFreedesktopNetworkManagerInterface::qt_metacall (this=0x7f51d5eee9c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7fffcba1fbf0) at /build/networkmanager-qt-yYCvz8/networkmanager-qt-5.18.0/obj-x86_64-linux-gnu/src/moc_nm-managerinterface.cpp:389
#36 0x00007f529fb70913 in QDBusConnectionPrivate::deliverCall (this=0x7f526c131490, object=0x7f51d5eee9c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, msg=..., metaTypes=..., slotIdx=9) at qdbusintegrator.cpp:978
#37 0x00007f529aa4aea1 in QObject::event (this=0x7f51d5eee9c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, e=<optimized out>) at kernel/qobject.cpp:1239
#38 0x00007f529b51e05c in QApplicationPrivate::notify_helper (this=this@entry=0x1880690, receiver=receiver@entry=0x7f51d5eee9c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, e=e@entry=0x6395280) at kernel/qapplication.cpp:3716
#39 0x00007f529b523516 in QApplication::notify (this=0x7fffcba20310, receiver=0x7f51d5eee9c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, e=0x6395280) at kernel/qapplication.cpp:3499
#40 0x00007f529aa1b62b in QCoreApplication::notifyInternal (this=0x7fffcba20310, receiver=0x7f51d5eee9c0 <(anonymous namespace)::Q_QGS_globalNetworkManager::innerFunction()::holder+32>, event=event@entry=0x6395280) at kernel/qcoreapplication.cpp:965
#41 0x00007f529aa1da26 in QCoreApplication::sendEvent (event=0x6395280, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#42 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1876600) at kernel/qcoreapplication.cpp:1593
#43 0x00007f529aa1df08 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#44 0x00007f529aa71673 in postEventSourceDispatch (s=0x18b8ff0) at kernel/qeventdispatcher_glib.cpp:271
#45 0x00007f5296eda1a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f5296eda400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f5296eda4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007f529aa71a7f in QEventDispatcherGlib::processEvents (this=0x18c6de0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#49 0x00007f529aa18dea in QEventLoop::exec (this=this@entry=0x7fffcba201b0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#50 0x00007f529aa20e8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#51 0x00007f529ad54c3c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1542
#52 0x00007f529b51a495 in QApplication::exec () at kernel/qapplication.cpp:2976
#53 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 364442, bug 364032, bug 363964, bug 363835, bug 363706.

Reported using DrKonqi