Bug 387666

Summary: Plasma crashes sometimes when changing desktop layout from 'Folder View' to 'Desktop' and back
Product: [Plasma] plasmashell Reporter: Alexander Mentyu <notuxius>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bugseforuns, notmart, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.11.4   
Target Milestone: 1.0   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Alexander Mentyu 2017-12-07 13:22:56 UTC 
Application: plasmashell (5.11.4)

Qt Version: 5.9.3
Frameworks Version: 5.41.0
Operating System: Linux 4.10.0-40-generic x86_64
Distribution: KDE neon Developer Edition

-- Information about the crash:
- What I was doing when the application crashed:
1. Go to 'Configure Desktop'.
2. In 'Wallpaper' select 'Desktop'.
3. Press 'Apply'.
4. Without closing the window change layout once again.

The crash can be reproduced sometimes.

-- 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 0x7f4225b7e8c0 (LWP 1440))]

Thread 12 (Thread 0x7f41361ce700 (LWP 2927)):
#0  0x00007f421f24870d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f421a10d38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f421a10d49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f421fb6f6cb in QEventDispatcherGlib::processEvents (this=0x7f4130002c00, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f421fb17e2a in QEventLoop::exec (this=this@entry=0x7f41361cdce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f421f9408f4 in QThread::exec (this=this@entry=0x40a4910) at thread/qthread.cpp:515
#6  0x00007f4222a97d25 in QQmlThreadPrivate::run (this=0x40a4910) at qml/ftw/qqmlthread.cpp:147
#7  0x00007f421f945709 in QThreadPrivate::start (arg=0x40a4910) at thread/qthread_unix.cpp:368
#8  0x00007f421e7ec6ba in start_thread (arg=0x7f41361ce700) at pthread_create.c:333
#9  0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f412f5ef700 (LWP 2919)):
#0  0x00007f421f24424d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f421a1506f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f421a10ce74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f421a10d330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f421a10d49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f421fb6f6cb in QEventDispatcherGlib::processEvents (this=0x7f412401d300, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f421fb17e2a in QEventLoop::exec (this=this@entry=0x7f412f5eece0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#7  0x00007f421f9408f4 in QThread::exec (this=this@entry=0x7b10f80) at thread/qthread.cpp:515
#8  0x00007f4222a97d25 in QQmlThreadPrivate::run (this=0x7b10f80) at qml/ftw/qqmlthread.cpp:147
#9  0x00007f421f945709 in QThreadPrivate::start (arg=0x7b10f80) at thread/qthread_unix.cpp:368
#10 0x00007f421e7ec6ba in start_thread (arg=0x7f412f5ef700) at pthread_create.c:333
#11 0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f41439c1700 (LWP 2834)):
#0  0x00007f421a10cb97 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f421a10d307 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f421a10d49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f421fb6f6cb in QEventDispatcherGlib::processEvents (this=0x7f413c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f421fb17e2a in QEventLoop::exec (this=this@entry=0x7f41439c0cc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f421f9408f4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f4148be3517 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f421f945709 in QThreadPrivate::start (arg=0x7205590) at thread/qthread_unix.cpp:368
#8  0x00007f421e7ec6ba in start_thread (arg=0x7f41439c1700) at pthread_create.c:333
#9  0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f414b7ac700 (LWP 2199)):
#0  0x00007f421f24870d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f421a10d38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f421a10d49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f421fb6f6cb in QEventDispatcherGlib::processEvents (this=0x7f41440008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f421fb17e2a in QEventLoop::exec (this=this@entry=0x7f414b7abd00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f421f9408f4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f421f945709 in QThreadPrivate::start (arg=0x1138e20) at thread/qthread_unix.cpp:368
#7  0x00007f421e7ec6ba in start_thread (arg=0x7f414b7ac700) at pthread_create.c:333
#8  0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f4162ddc700 (LWP 2167)):
#0  0x00007f421a151a79 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f421a10d372 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f421a10d49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f421fb6f6cb in QEventDispatcherGlib::processEvents (this=0x7f415c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f421fb17e2a in QEventLoop::exec (this=this@entry=0x7f4162ddbc90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f421f9408f4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f4223638046 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f421f945709 in QThreadPrivate::start (arg=0x46532b0) at thread/qthread_unix.cpp:368
#8  0x00007f421e7ec6ba in start_thread (arg=0x7f4162ddc700) at pthread_create.c:333
#9  0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f41ef788700 (LWP 1711)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f42252eed04 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f42252eed49 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f421e7ec6ba in start_thread (arg=0x7f41ef788700) at pthread_create.c:333
#4  0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f41f8cf4700 (LWP 1664)):
#0  0x00007f421f24870d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f421a10d38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f421a10d49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f421fb6f6cb in QEventDispatcherGlib::processEvents (this=0x7f41f00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f421fb17e2a in QEventLoop::exec (this=this@entry=0x7f41f8cf3d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f421f9408f4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f421f945709 in QThreadPrivate::start (arg=0xff5d70) at thread/qthread_unix.cpp:368
#7  0x00007f421e7ec6ba in start_thread (arg=0x7f41f8cf4700) at pthread_create.c:333
#8  0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f4205176700 (LWP 1531)):
#0  0x00007f421a151a79 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f421a10cf16 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f421a10d3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f421a10d49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f421fb6f6cb in QEventDispatcherGlib::processEvents (this=0x7f41f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f421fb17e2a in QEventLoop::exec (this=this@entry=0x7f4205175ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007f421f9408f4 in QThread::exec (this=this@entry=0xb309a0) at thread/qthread.cpp:515
#7  0x00007f4222a97d25 in QQmlThreadPrivate::run (this=0xb309a0) at qml/ftw/qqmlthread.cpp:147
#8  0x00007f421f945709 in QThreadPrivate::start (arg=0xb309a0) at thread/qthread_unix.cpp:368
#9  0x00007f421e7ec6ba in start_thread (arg=0x7f4205176700) at pthread_create.c:333
#10 0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f42073ea700 (LWP 1502)):
#0  0x00007f421f24870d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f421a10d38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f421a10d49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f421fb6f6cb in QEventDispatcherGlib::processEvents (this=0x7f41fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f421fb17e2a in QEventLoop::exec (this=this@entry=0x7f42073e9ce0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f421f9408f4 in QThread::exec (this=this@entry=0x9f2000) at thread/qthread.cpp:515
#6  0x00007f4222a97d25 in QQmlThreadPrivate::run (this=0x9f2000) at qml/ftw/qqmlthread.cpp:147
#7  0x00007f421f945709 in QThreadPrivate::start (arg=0x9f2000) at thread/qthread_unix.cpp:368
#8  0x00007f421e7ec6ba in start_thread (arg=0x7f42073ea700) at pthread_create.c:333
#9  0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f420cedc700 (LWP 1481)):
#0  0x00007f421f93c7bb in QMutex::lock (this=this@entry=0x96e250) at thread/qmutex.cpp:230
#1  0x00007f421fb6f5df in QMutexLocker::QMutexLocker (m=0x96e250, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:200
#2  QThreadData::canWaitLocked (this=0x96e220) at ../../include/QtCore/5.9.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:253
#3  postEventSourcePrepare (s=0x7f42000012d0, timeout=0x7f420cedbb04) at kernel/qeventdispatcher_glib.cpp:259
#4  0x00007f421a10c91d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f421a10d2bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f421a10d49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f421fb6f6cb in QEventDispatcherGlib::processEvents (this=0x7f42000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007f421fb17e2a in QEventLoop::exec (this=this@entry=0x7f420cedbcd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#9  0x00007f421f9408f4 in QThread::exec (this=this@entry=0x7f4220262d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:515
#10 0x00007f421ffee315 in QDBusConnectionManager::run (this=0x7f4220262d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#11 0x00007f421f945709 in QThreadPrivate::start (arg=0x7f4220262d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:368
#12 0x00007f421e7ec6ba in start_thread (arg=0x7f420cedc700) at pthread_create.c:333
#13 0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f420f032700 (LWP 1456)):
#0  0x00007f421f24870d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f422423fc62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f42242418d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f42111771f9 in QXcbEventReader::run (this=0x92d510) at qxcbconnection.cpp:1330
#4  0x00007f421f945709 in QThreadPrivate::start (arg=0x92d510) at thread/qthread_unix.cpp:368
#5  0x00007f421e7ec6ba in start_thread (arg=0x7f420f032700) at pthread_create.c:333
#6  0x00007f421f2543dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f4225b7e8c0 (LWP 1440)):
[KCrash Handler]
#6  0x00007f412d24e440 in ?? ()
#7  0x00007f422295a78d in drainMarkStack (markBase=<optimized out>, engine=<optimized out>) at jsruntime/qv4persistent.cpp:223
#8  QV4::PersistentValueStorage::mark (this=<optimized out>, e=0xb57f30) at jsruntime/qv4persistent.cpp:237
#9  0x00007f4222866443 in QV4::MemoryManager::mark (this=this@entry=0xb3d210) at memory/qv4mm.cpp:817
#10 0x00007f4222866b25 in QV4::MemoryManager::runGC (this=this@entry=0xb3d210) at memory/qv4mm.cpp:952
#11 0x00007f42228688f0 in QV4::MemoryManager::allocString (this=this@entry=0xb3d210, unmanagedSize=<optimized out>) at memory/qv4mm.cpp:716
#12 0x00007f422294a58d in QV4::MemoryManager::allocWithStringData<QV4::String, QString> (arg1=..., unmanagedSize=<optimized out>, this=0xb3d210) at ../../include/QtQml/5.9.3/QtQml/private/../../../../../src/qml/memory/qv4mm_p.h:261
#13 QV4::ExecutionEngine::newString (this=0xb57f30, s=...) at jsruntime/qv4engine.cpp:559
#14 0x00007f42229edb6d in QQmlVMEMetaObject::writeProperty (this=this@entry=0x4710c70, id=id@entry=11, v=...) at qml/qqmlvmemetaobject.cpp:389
#15 0x00007f42229f1198 in QQmlVMEMetaObject::metaCall (this=0x4710c70, o=<optimized out>, c=<optimized out>, _id=<optimized out>, a=0x7ffca052ab30) at qml/qqmlvmemetaobject.cpp:771
#16 0x00007f4222a82ad6 in QQmlPropertyData::writeProperty (flags=..., value=0x7ffca052ab00, target=<optimized out>, this=0x7f41f44676e8) at ../../include/QtQml/5.9.3/QtQml/private/../../../../../src/qml/qml/qqmlpropertycache_p.h:324
#17 GenericBinding<10>::doStore<QString> (flags=..., pd=0x7f41f44676e8, value=..., this=0x7ac6d20) at qml/qqmlbinding.cpp:295
#18 GenericBinding<10>::write (this=0x7ac6d20, result=..., isUndefined=<optimized out>, flags=...) at qml/qqmlbinding.cpp:276
#19 0x00007f4222a836b0 in QQmlNonbindingBinding::doUpdate (this=0x7ac6d20, watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:210
#20 0x00007f4222a807c3 in QQmlBinding::update (this=0x7ac6d20, flags=..., flags@entry=...) at qml/qqmlbinding.cpp:167
#21 0x00007f4222a80a0e in QQmlBinding::refresh (this=<optimized out>) at qml/qqmlbinding.cpp:439
#22 0x00007f4222a559c7 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:106
#23 0x00007f42229f51e4 in QQmlData::signalEmitted (object=0x56cd9a0, index=38, a=0x0) at qml/qqmlengine.cpp:843
#24 0x00007f421fb4697e in QMetaObject::activate (sender=sender@entry=0x56cd9a0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=argv@entry=0x0) at kernel/qobject.cpp:3644
#25 0x00007f421fb46b87 in QMetaObject::activate (sender=sender@entry=0x56cd9a0, m=<optimized out>, local_signal_index=<optimized out>, argv=argv@entry=0x0) at kernel/qobject.cpp:3628
#26 0x00007f421fb46be3 in QMetaObject::activate (sender=sender@entry=0x56cd9a0, signal_index=<optimized out>, argv=argv@entry=0x0) at kernel/qobject.cpp:3815
#27 0x00007f4222863702 in VDMModelDelegateDataType::notify (this=<optimized out>, items=..., index=<optimized out>, count=<optimized out>, roles=...) at util/qqmladaptormodel.cpp:178
#28 0x00007f4222abd38a in QQmlAdaptorModel::notify (roles=..., count=7, index=0, items=..., this=0x47096c8) at ../../include/QtQml/5.9.3/QtQml/private/../../../../../src/qml/util/qqmladaptormodel_p.h:134
#29 QQmlDelegateModel::_q_itemsChanged (this=this@entry=0x4709610, index=index@entry=0, count=7, roles=...) at types/qqmldelegatemodel.cpp:1158
#30 0x00007f4222ac3651 in QQmlDelegateModel::_q_layoutChanged (this=0x4709610, parents=..., hint=<optimized out>) at types/qqmldelegatemodel.cpp:1609
#31 0x00007f4222ac384f in QQmlDelegateModel::qt_static_metacall (_o=_o@entry=0x4709610, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=13, _a=_a@entry=0x7ffca052ca40) at .moc/moc_qqmldelegatemodel_p.cpp:201
#32 0x00007f4222ac3dc8 in QQmlDelegateModel::qt_metacall (this=0x4709610, _c=QMetaObject::InvokeMetaMethod, _id=13, _a=0x7ffca052ca40) at .moc/moc_qqmldelegatemodel_p.cpp:335
#33 0x00007f421fb463e4 in QMetaObject::activate (sender=sender@entry=0x4724830, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffca052ca40) at kernel/qobject.cpp:3781
#34 0x00007f421fb46b87 in QMetaObject::activate (sender=sender@entry=0x4724830, m=m@entry=0x7f421ffcf6a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffca052ca40) at kernel/qobject.cpp:3628
#35 0x00007f421fab9266 in QAbstractItemModel::layoutChanged (this=this@entry=0x4724830, _t1=..., _t2=_t2@entry=QAbstractItemModel::VerticalSortHint) at .moc/moc_qabstractitemmodel.cpp:581
#36 0x00007f421fae61c8 in QSortFilterProxyModelPrivate::_q_sourceDataChanged (this=<optimized out>, source_top_left=..., source_bottom_right=..., roles=...) at itemmodels/qsortfilterproxymodel.cpp:1232
#37 0x00007f421fae7d08 in QSortFilterProxyModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qsortfilterproxymodel.cpp:204
#38 0x00007f421fb46279 in QMetaObject::activate (sender=0x46f4790, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca052cd50) at kernel/qobject.cpp:3766
#39 0x00007f421fb46b87 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f421ffcf6a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca052cd50) at kernel/qobject.cpp:3628
#40 0x00007f421fab917c in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:567
#41 0x00007f415af86353 in TaskManager::TaskGroupingProxyModel::Private::sourceDataChanged (this=0x46faef0, topLeft=..., bottomRight=..., roles=...) at /workspace/build/libtaskmanager/taskgroupingproxymodel.cpp:251
#42 0x00007f415af87f35 in TaskManager::TaskGroupingProxyModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /workspace/build/obj-x86_64-linux-gnu/libtaskmanager/moc_taskgroupingproxymodel.cpp:158
#43 0x00007f421fb46279 in QMetaObject::activate (sender=sender@entry=0x469fad0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca052d020) at kernel/qobject.cpp:3766
#44 0x00007f421fb46b87 in QMetaObject::activate (sender=sender@entry=0x469fad0, m=m@entry=0x7f421ffcf6a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca052d020) at kernel/qobject.cpp:3628
#45 0x00007f421fab917c in QAbstractItemModel::dataChanged (this=this@entry=0x469fad0, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:567
#46 0x00007f421fae608b in QSortFilterProxyModelPrivate::_q_sourceDataChanged (this=<optimized out>, source_top_left=..., source_bottom_right=..., roles=...) at itemmodels/qsortfilterproxymodel.cpp:1258
#47 0x00007f421fae7d08 in QSortFilterProxyModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qsortfilterproxymodel.cpp:204
#48 0x00007f421fb46279 in QMetaObject::activate (sender=0x474b380, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca052d340) at kernel/qobject.cpp:3766
#49 0x00007f421fb46b87 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f421ffcf6a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca052d340) at kernel/qobject.cpp:3628
#50 0x00007f421fab917c in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:567
#51 0x00007f4161692c42 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#52 0x00007f4161694538 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5ItemModels.so.5
#53 0x00007f421fb46279 in QMetaObject::activate (sender=sender@entry=0x3eec410, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca052d560) at kernel/qobject.cpp:3766
#54 0x00007f421fb46b87 in QMetaObject::activate (sender=sender@entry=0x3eec410, m=m@entry=0x7f421ffcf6a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca052d560) at kernel/qobject.cpp:3628
#55 0x00007f421fab917c in QAbstractItemModel::dataChanged (this=this@entry=0x3eec410, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:567
#56 0x00007f421fad9f92 in QIdentityProxyModelPrivate::_q_sourceDataChanged (this=<optimized out>, topLeft=..., bottomRight=..., roles=...) at itemmodels/qidentityproxymodel.cpp:486
#57 0x00007f421fadbbd8 in QIdentityProxyModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qidentityproxymodel.cpp:162
#58 0x00007f421fb46279 in QMetaObject::activate (sender=0x470dc90, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca052d780) at kernel/qobject.cpp:3766
#59 0x00007f421fb46b87 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f421ffcf6a0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffca052d780) at kernel/qobject.cpp:3628
#60 0x00007f421fab917c in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:567
#61 0x00007f415afa3807 in TaskManager::XWindowTasksModel::Private::dataChanged (this=this@entry=0x4724df0, window=31457917, roles=...) at /workspace/build/libtaskmanager/xwindowtasksmodel.cpp:400
#62 0x00007f415afa5b2a in TaskManager::XWindowTasksModel::Private::windowChanged (this=0x4724df0, window=31457917, properties=..., properties2=...) at /workspace/build/libtaskmanager/xwindowtasksmodel.cpp:387
#63 0x00007f415afa5bdc in TaskManager::XWindowTasksModel::Private::<lambda(WId, NET::Properties, NET::Properties2)>::operator() (properties2=..., properties=..., window=<optimized out>, __closure=<optimized out>) at /workspace/build/libtaskmanager/xwindowtasksmodel.cpp:168
#64 QtPrivate::FunctorCall<QtPrivate::IndexesList<0, 1, 2>, QtPrivate::List<long long unsigned int, QFlags<NET::Property>, QFlags<NET::Property2> >, void, TaskManager::XWindowTasksModel::Private::init()::<lambda(WId, NET::Properties, NET::Properties2)> >::call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:130
#65 QtPrivate::Functor<TaskManager::XWindowTasksModel::Private::init()::<lambda(WId, NET::Properties, NET::Properties2)>, 3>::call<QtPrivate::List<unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2> >, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:240
#66 QtPrivate::QFunctorSlotObject<TaskManager::XWindowTasksModel::Private::init()::<lambda(WId, NET::Properties, NET::Properties2)>, 3, QtPrivate::List<long long unsigned int, QFlags<NET::Property>, QFlags<NET::Property2> >, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:168
#67 0x00007f421fb465a6 in QtPrivate::QSlotObjectBase::call (a=0x7ffca052da10, r=0x470dc90, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:101
#68 QMetaObject::activate (sender=0x7f42227bfc20, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3749
#69 0x00007f42225b0978 in KWindowSystem::windowChanged(unsigned long long, QFlags<NET::Property>, QFlags<NET::Property2>) () from /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#70 0x00007f420c2c6bbe in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#71 0x00007f421fb16a0f in QAbstractEventDispatcher::filterNativeEvent (this=<optimized out>, eventType=..., message=message@entry=0x7da72f0, result=result@entry=0x7ffca052db58) at kernel/qabstracteventdispatcher.cpp:467
#72 0x00007f421117ae04 in QXcbConnection::handleXcbEvent (this=this@entry=0x9092f0, event=event@entry=0x7da72f0) at qxcbconnection.cpp:1091
#73 0x00007f421117baec in QXcbConnection::processXcbEvents (this=0x9092f0) at qxcbconnection.cpp:1731
#74 0x00007f421fb472b9 in QObject::event (this=0x9092f0, e=<optimized out>) at kernel/qobject.cpp:1246
#75 0x00007f4220b02b9c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x9092f0, e=0x7f4208050080) at kernel/qapplication.cpp:3722
#76 0x00007f4220b0a5a7 in QApplication::notify (this=0x7ffca052e2d0, receiver=0x9092f0, e=0x7f4208050080) at kernel/qapplication.cpp:3481
#77 0x00007f421fb19df8 in QCoreApplication::notifyInternal2 (receiver=0x9092f0, event=event@entry=0x7f4208050080) at kernel/qcoreapplication.cpp:1018
#78 0x00007f421fb1c5db in QCoreApplication::sendEvent (event=0x7f4208050080, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#79 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x909b90) at kernel/qcoreapplication.cpp:1678
#80 0x00007f421fb1ca48 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1532
#81 0x00007f421fb700a3 in postEventSourceDispatch (s=0x951850) at kernel/qeventdispatcher_glib.cpp:276
#82 0x00007f421a10d197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#83 0x00007f421a10d3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#84 0x00007f421a10d49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#85 0x00007f421fb6f6af in QEventDispatcherGlib::processEvents (this=0x9562d0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#86 0x00007f421fb17e2a in QEventLoop::exec (this=this@entry=0x7ffca052e190, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#87 0x00007f421fb20d64 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291
#88 0x00007f422038c20c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1679
#89 0x00007f4220b02af5 in QApplication::exec () at kernel/qapplication.cpp:2910
#90 0x000000000041cf5b in main (argc=1, argv=<optimized out>) at /workspace/build/shell/main.cpp:167

The reporter indicates this bug may be a duplicate of or related to bug 366485.

Possible duplicates by query: bug 366485.

Reported using DrKonqi
Comment 1 David Edmundson 2017-12-08 15:27:21 UTC 
*** Bug 387668 has been marked as a duplicate of this bug. ***
Comment 2 Patrick Silva 2017-12-16 12:54:32 UTC 
crash reproducible on Arch Linux under Wayland session.
Comment 3 Marco Martin 2018-01-24 15:06:16 UTC 

*** This bug has been marked as a duplicate of bug 366485 ***