Bug 353191

Application: plasmashell (5.4.1)

Qt Version: 5.5.0
Operating System: Linux 4.2.1-300.fc23.x86_64 x86_64
Distribution: "Fedora release 22 (Twenty Two)"

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

disconnect and then reconnect wifi AP from NetworkManager widget

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 0x7fea1d5a4900 (LWP 13584))]

Thread 8 (Thread 0x7fea165f2700 (LWP 13589)):
#0  0x0000003c298f72fd in poll () at /lib64/libc.so.6
#1  0x0000003c2d00a182 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x0000003c2d00bc77 in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007fea16a38999 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x0000003c014a254e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x0000003c29c07555 in start_thread () at /lib64/libpthread.so.0
#6  0x0000003c29902b9d in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7fea0f5ef700 (LWP 13631)):
#0  0x0000003c2991064f in __libc_enable_asynccancel () at /lib64/libc.so.6
#1  0x0000003c298f72f2 in poll () at /lib64/libc.so.6
#2  0x0000003bffc49dbc in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x0000003bffc49ecc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x0000003c016d9dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x0000003c01680daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x0000003c0149d5a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x0000003c10ed9245 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x0000003c014a254e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x0000003c29c07555 in start_thread () at /lib64/libpthread.so.0
#10 0x0000003c29902b9d in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7fea04e57700 (LWP 13862)):
#0  0x00007ffd54b6dc2f in clock_gettime ()
#1  0x0000003c29910d9d in clock_gettime () at /lib64/libc.so.6
#2  0x0000003c01552bc6 in qt_gettime() () at /lib64/libQt5Core.so.5
#3  0x0000003c016d7839 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x0000003c016d7da5 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#5  0x0000003c016d918e in timerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#6  0x0000003bffc4935d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#7  0x0000003bffc49ceb in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#8  0x0000003bffc49ecc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#9  0x0000003c016d9dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#10 0x0000003c01680daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#11 0x0000003c0149d5a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#12 0x0000003c10ed9245 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#13 0x0000003c014a254e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#14 0x0000003c29c07555 in start_thread () at /lib64/libpthread.so.0
#15 0x0000003c29902b9d in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fe9ff1c0700 (LWP 14196)):
#0  0x0000003c298f72fd in poll () at /lib64/libc.so.6
#1  0x0000003bffc49dbc in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003bffc49ecc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x0000003c016d9dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x0000003c01680daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x0000003c0149d5a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x0000003c10ed9245 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x0000003c014a254e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x0000003c29c07555 in start_thread () at /lib64/libpthread.so.0
#9  0x0000003c29902b9d in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fe9fd939700 (LWP 14257)):
#0  0x0000003c29c0c540 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x0000003c12385494 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x0000003c123854d9 in  () at /lib64/libQt5Script.so.5
#3  0x0000003c29c07555 in start_thread () at /lib64/libpthread.so.0
#4  0x0000003c29902b9d in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fe976c7f700 (LWP 14353)):
#0  0x0000003bffc8eee0 in g_mutex_unlock () at /lib64/libglib-2.0.so.0
#1  0x0000003bffc49c6d in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x0000003bffc49ecc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x0000003c016d9dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x0000003c01680daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x0000003c0149d5a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x0000003c114f6616 in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#7  0x0000003c014a254e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x0000003c29c07555 in start_thread () at /lib64/libpthread.so.0
#9  0x0000003c29902b9d in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fe96d30b700 (LWP 14381)):
#0  0x00007ffd54b6dc2f in clock_gettime ()
#1  0x0000003c29910d9d in clock_gettime () at /lib64/libc.so.6
#2  0x0000003c01552bc6 in qt_gettime() () at /lib64/libQt5Core.so.5
#3  0x0000003c016d7839 in QTimerInfoList::updateCurrentTime() () at /lib64/libQt5Core.so.5
#4  0x0000003c016d7da5 in QTimerInfoList::timerWait(timespec&) () at /lib64/libQt5Core.so.5
#5  0x0000003c016d96dc in idleTimerSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#6  0x0000003bffc4935d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#7  0x0000003bffc49ceb in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#8  0x0000003bffc49ecc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#9  0x0000003c016d9dab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#10 0x0000003c01680daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#11 0x0000003c0149d5a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#12 0x00007fe96d5a6397 in KCupsConnection::run() () at /lib64/libkcupslib.so
#13 0x0000003c014a254e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#14 0x0000003c29c07555 in start_thread () at /lib64/libpthread.so.0
#15 0x0000003c29902b9d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fea1d5a4900 (LWP 13584)):
[KCrash Handler]
#5  0x0000003c0168b3b0 in QMetaObject::methodOffset() const () at /lib64/libQt5Core.so.5
#6  0x0000003c016b298b in QMetaObject::activate(QObject*, int, void**) () at /lib64/libQt5Core.so.5
#7  0x0000003c10ca4fb2 in VDMModelDelegateDataType::notify(QQmlAdaptorModel const&, QList<QQmlDelegateModelItem*> const&, int, int, QVector<int> const&) const () at /lib64/libQt5Qml.so.5
#8  0x0000003c10f1aaaa in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /lib64/libQt5Qml.so.5
#9  0x0000003c10f1f6e2 in QQmlDelegateModel::_q_layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /lib64/libQt5Qml.so.5
#10 0x0000003c10f4212f in QQmlDelegateModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#11 0x0000003c10f428e8 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /lib64/libQt5Qml.so.5
#12 0x0000003c016b2310 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#13 0x0000003c0172e356 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /lib64/libQt5Core.so.5
#14 0x0000003c01652dce in QSortFilterProxyModelPrivate::_q_sourceDataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /lib64/libQt5Core.so.5
#15 0x0000003c016548b8 in QSortFilterProxyModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5Core.so.5
#16 0x0000003c016b215a in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#17 0x0000003c0172e26c in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) () at /lib64/libQt5Core.so.5
#18 0x00007fe9674c2f1d in NetworkModel::updateItem(NetworkModelItem*) () at /lib64/libplasmanm_internal.so
#19 0x00007fe9674c4194 in NetworkModel::activeConnectionStateChanged(NetworkManager::ActiveConnection::State) () at /lib64/libplasmanm_internal.so
#20 0x0000003c016b1fe7 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#21 0x00007fe96725a6c1 in NetworkManager::ActiveConnection::stateChanged(NetworkManager::ActiveConnection::State) () at /lib64/libKF5NetworkManagerQt.so.6
#22 0x00007fe9671b7c39 in NetworkManager::ActiveConnectionPrivate::propertiesChanged(QMap<QString, QVariant> const&) () at /lib64/libKF5NetworkManagerQt.so.6
#23 0x0000003c016b1fe7 in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#24 0x00007fe967265a73 in OrgFreedesktopNetworkManagerConnectionActiveInterface::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libKF5NetworkManagerQt.so.6
#25 0x00007fe96726c1e3 in OrgFreedesktopNetworkManagerConnectionActiveInterface::qt_metacall(QMetaObject::Call, int, void**) () at /lib64/libKF5NetworkManagerQt.so.6
#26 0x0000003c01c20bd3 in QDBusConnectionPrivate::deliverCall(QObject*, int, QDBusMessage const&, QVector<int> const&, int) () at /lib64/libQt5DBus.so.5
#27 0x0000003c016b3021 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#28 0x0000003c059544ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#29 0x0000003c05959976 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#30 0x0000003c0168361b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#31 0x0000003c01685a16 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#32 0x0000003c016d9983 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#33 0x0000003bffc49a8a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#34 0x0000003bffc49e20 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#35 0x0000003bffc49ecc in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#36 0x0000003c016d9d8f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#37 0x0000003c01680daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#38 0x0000003c01688e6c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#39 0x00000000004302c3 in main ()

Possible duplicates by query: bug 352946, bug 349103, bug 348720, bug 348535, bug 348009.

Reported using DrKonqi