Bug 368781

Application: plasmashell (5.6.5)

Qt Version: 5.5.1
Frameworks Version: 5.23.0
Operating System: Linux 4.4.0-36-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

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

- Unusual behavior I noticed:

- Kwin windows remains fixed in the background, unclickable, after clicking on the 'close' button.

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 0x7fc24d4b68c0 (LWP 4361))]

Thread 9 (Thread 0x7fc183b97700 (LWP 4748)):
#0  0x00007fc247b8be8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc24491c39c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc24491c4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc2484b8a9b in QEventDispatcherGlib::processEvents (this=0x7fc17c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fc24845fdea in QEventLoop::exec (this=this@entry=0x7fc183b96c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fc24827c8a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fc24b4b8ed6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fc24828184e in QThreadPrivate::start (arg=0x1d8fed0) at thread/qthread_unix.cpp:331
#8  0x00007fc24736e6fa in start_thread (arg=0x7fc183b97700) at pthread_create.c:333
#9  0x00007fc247b97b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fc193fff700 (LWP 4745)):
#0  0x00007ffc81bd59a9 in ?? ()
#1  0x00007ffc81bd5cd5 in clock_gettime ()
#2  0x00007fc247ba5fb6 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7fc193ffea40) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007fc248331c16 in qt_clock_gettime (ts=0x7fc193ffea40, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#4  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#5  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#6  0x00007fc2484b6529 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fc18c00fd40) at kernel/qtimerinfo_unix.cpp:84
#7  0x00007fc2484b6a95 in QTimerInfoList::timerWait (this=0x7fc18c00fd40, tm=...) at kernel/qtimerinfo_unix.cpp:381
#8  0x00007fc2484b83cc in timerSourcePrepareHelper (timeout=0x7fc193ffeb04, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#9  idleTimerSourcePrepare (source=<optimized out>, timeout=0x7fc193ffeb04) at kernel/qeventdispatcher_glib.cpp:207
#10 0x00007fc24491b92d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fc24491c2cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fc24491c4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007fc2484b8a9b in QEventDispatcherGlib::processEvents (this=0x7fc18c001330, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#14 0x00007fc24845fdea in QEventLoop::exec (this=this@entry=0x7fc193ffecc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#15 0x00007fc24827c8a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#16 0x00007fc1866897d7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#17 0x00007fc24828184e in QThreadPrivate::start (arg=0x2f99a60) at thread/qthread_unix.cpp:331
#18 0x00007fc24736e6fa in start_thread (arg=0x7fc193fff700) at pthread_create.c:333
#19 0x00007fc247b97b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fc21b1c4700 (LWP 4523)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc24cf01bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fc24cf01c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fc24736e6fa in start_thread (arg=0x7fc21b1c4700) at pthread_create.c:333
#4  0x00007fc247b97b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fc2209b5700 (LWP 4510)):
#0  0x00007fc247b8be8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc24491c39c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc24491c4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc2484b8a9b in QEventDispatcherGlib::processEvents (this=0x7fc2140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fc24845fdea in QEventLoop::exec (this=this@entry=0x7fc2209b4ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fc24827c8a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fc24ab2d3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fc24828184e in QThreadPrivate::start (arg=0x1ad2510) at thread/qthread_unix.cpp:331
#8  0x00007fc24736e6fa in start_thread (arg=0x7fc2209b5700) at pthread_create.c:333
#9  0x00007fc247b97b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fc222778700 (LWP 4507)):
#0  0x00007fc247b8be8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc24491c39c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc24491c4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc2484b8a9b in QEventDispatcherGlib::processEvents (this=0x7fc21c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fc24845fdea in QEventLoop::exec (this=this@entry=0x7fc222777ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fc24827c8a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fc24ab2d3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fc24828184e in QThreadPrivate::start (arg=0x19fda50) at thread/qthread_unix.cpp:331
#8  0x00007fc24736e6fa in start_thread (arg=0x7fc222778700) at pthread_create.c:333
#9  0x00007fc247b97b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fc22df1c700 (LWP 4499)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fc22f481213 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007fc22f480937 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007fc24736e6fa in start_thread (arg=0x7fc22df1c700) at pthread_create.c:333
#4  0x00007fc247b97b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fc235f7a700 (LWP 4498)):
#0  0x00007fc247b8be8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc24491c39c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fc24491c4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fc2484b8a9b in QEventDispatcherGlib::processEvents (this=0x7fc2280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007fc24845fdea in QEventLoop::exec (this=this@entry=0x7fc235f79ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fc24827c8a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fc24ab2d3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fc24828184e in QThreadPrivate::start (arg=0x16ee1e0) at thread/qthread_unix.cpp:331
#8  0x00007fc24736e6fa in start_thread (arg=0x7fc235f7a700) at pthread_create.c:333
#9  0x00007fc247b97b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fc238793700 (LWP 4366)):
#0  0x00007fc247b8be8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc24bc66c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fc24bc688d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fc23a8e1629 in QXcbEventReader::run (this=0x1624b60) at qxcbconnection.cpp:1253
#4  0x00007fc24828184e in QThreadPrivate::start (arg=0x1624b60) at thread/qthread_unix.cpp:331
#5  0x00007fc24736e6fa in start_thread (arg=0x7fc238793700) at pthread_create.c:333
#6  0x00007fc247b97b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fc24d4b68c0 (LWP 4361)):
[KCrash Handler]
#6  0x00007fc24a8fd0f8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fc24ab6eada in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fc24ab736f2 in QQmlDelegateModel::_q_layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fc24ab961af in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fc24ab96968 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007fc248491180 in QMetaObject::activate (sender=sender@entry=0x3441ce0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffc81afacb0) at kernel/qobject.cpp:3728
#12 0x00007fc2484917d7 in QMetaObject::activate (sender=sender@entry=0x3441ce0, m=m@entry=0x7fc2486aaec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffc81afacb0) at kernel/qobject.cpp:3578
#13 0x00007fc24850d1e6 in QAbstractItemModel::layoutChanged (this=this@entry=0x3441ce0, _t1=..., _t2=_t2@entry=QAbstractItemModel::VerticalSortHint) at .moc/moc_qabstractitemmodel.cpp:562
#14 0x00007fc248431dea in QSortFilterProxyModelPrivate::_q_sourceDataChanged (this=<optimized out>, source_top_left=..., source_bottom_right=..., roles=...) at itemmodels/qsortfilterproxymodel.cpp:1207
#15 0x00007fc248433898 in QSortFilterProxyModel::qt_static_metacall (_o=_o@entry=0x3441ce0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=5, _a=_a@entry=0x7ffc81afafb0) at .moc/moc_qsortfilterproxymodel.cpp:202
#16 0x00007fc248490fca in QMetaObject::activate (sender=0x3a3ef40, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffc81afafb0) at kernel/qobject.cpp:3713
#17 0x00007fc2484917d7 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7fc2486aaec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffc81afafb0) at kernel/qobject.cpp:3578
#18 0x00007fc24850d0fc in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:548
#19 0x00007fc17bbb852d in NetworkModel::updateItem(NetworkModelItem*) () from /usr/lib/x86_64-linux-gnu/libplasmanm_internal.so
#20 0x00007fc17bbbf64f in NetworkModel::addActiveConnection(QSharedPointer<NetworkManager::ActiveConnection> const&) () from /usr/lib/x86_64-linux-gnu/libplasmanm_internal.so
#21 0x00007fc17bbbfb43 in NetworkModel::activeConnectionAdded(QString const&) () from /usr/lib/x86_64-linux-gnu/libplasmanm_internal.so
#22 0x00007fc248490e4f in QtPrivate::QSlotObjectBase::call (a=0x7ffc81afb2b0, r=0x3a3ef40, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#23 QMetaObject::activate (sender=0x7fc17bba19a0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3698
#24 0x00007fc17b954eb5 in NetworkManager::Notifier::activeConnectionAdded(QString const&) () from /usr/lib/x86_64-linux-gnu/libKF5NetworkManagerQt.so.6
#25 0x00007fc17b8d8f70 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5NetworkManagerQt.so.6
#26 0x00007fc248490e4f in QtPrivate::QSlotObjectBase::call (a=0x7ffc81afb5c0, r=0x7fc17bba19a0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#27 QMetaObject::activate (sender=0x7fc17bba19c0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3698
#28 0x00007fc17b960140 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5NetworkManagerQt.so.6
#29 0x00007fc17b9668e0 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5NetworkManagerQt.so.6
#30 0x00007fc24d5fc913 in QDBusConnectionPrivate::deliverCall (this=0x7fc21438c870, object=0x7fc17bba19c0, msg=..., metaTypes=..., slotIdx=9) at qdbusintegrator.cpp:978
#31 0x00007fc248491ea1 in QObject::event (this=0x7fc17bba19c0, e=<optimized out>) at kernel/qobject.cpp:1239
#32 0x00007fc248d5505c in QApplicationPrivate::notify_helper (this=this@entry=0x16037c0, receiver=receiver@entry=0x7fc17bba19c0, e=e@entry=0x35df450) at kernel/qapplication.cpp:3716
#33 0x00007fc248d5a516 in QApplication::notify (this=0x7ffc81afbe70, receiver=0x7fc17bba19c0, e=0x35df450) at kernel/qapplication.cpp:3499
#34 0x00007fc24846262b in QCoreApplication::notifyInternal (this=0x7ffc81afbe70, receiver=0x7fc17bba19c0, event=event@entry=0x35df450) at kernel/qcoreapplication.cpp:965
#35 0x00007fc248464a26 in QCoreApplication::sendEvent (event=0x35df450, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#36 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x15f9600) at kernel/qcoreapplication.cpp:1593
#37 0x00007fc248464f08 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#38 0x00007fc2484b8673 in postEventSourceDispatch (s=0x1655020) at kernel/qeventdispatcher_glib.cpp:271
#39 0x00007fc24491c1a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007fc24491c400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007fc24491c4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007fc2484b8a7f in QEventDispatcherGlib::processEvents (this=0x165f910, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#43 0x00007fc24845fdea in QEventLoop::exec (this=this@entry=0x7ffc81afbd20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#44 0x00007fc248467e8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#45 0x000000000041bfe0 in ?? ()
#46 0x00007fc247ab1830 in __libc_start_main (main=0x41b5c0, argc=2, argv=0x7ffc81afbff8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc81afbfe8) at ../csu/libc-start.c:291
#47 0x000000000041c149 in _start ()

Possible duplicates by query: bug 368667, bug 366439, bug 366369, bug 366287, bug 366270.

Reported using DrKonqi