Bug 354794

Application: plasmashell (5.4.2)

Qt Version: 5.5.1
Operating System: Linux 4.2.0-1-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
- What I was doing when the application crashed:
closing a window
ofter last few days after some hours of working closing any window very likely provokes a crash of plasmashell.

i realize that there are noumerous reports already, but apparently no solution is forthcoming, hence today i installed the missing dbg symbols indicated in the dialog and produced a 3 starred stacktrace, hoping it finally will help to fix this nasty issue.

if it helps, i am running eclipse (4.4.2) all day, programming Java.

system: debian/sid amd64, kde from debian/sid packages

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 0x7f5f86ea7940 (LWP 28144))]

Thread 8 (Thread 0x7f5f71f27700 (LWP 28146)):
#0  0x00007f5f815fa52d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f5f8569d382 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f5f8569eff7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f5f7383d839 in QXcbEventReader::run (this=0x2526740) at qxcbconnection.cpp:1229
#4  0x00007f5f81ce6a6e in QThreadPrivate::start (arg=0x2526740) at thread/qthread_unix.cpp:331
#5  0x00007f5f80e030a4 in start_thread (arg=0x7f5f71f27700) at pthread_create.c:309
#6  0x00007f5f8160306d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7f5f6b5ef700 (LWP 28149)):
#0  0x00007f5f7e3b2284 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5f7e3b470b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5f7e3b510b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5f7e3b52ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5f81f1e58b in QEventDispatcherGlib::processEvents (this=0x7f5f640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f5f81ec554a in QEventLoop::exec (this=this@entry=0x7f5f6b5eec60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f5f81ce1ac4 in QThread::exec (this=this@entry=0x260be60) at thread/qthread.cpp:503
#7  0x00007f5f84562105 in QQmlThreadPrivate::run (this=0x260be60) at qml/ftw/qqmlthread.cpp:141
#8  0x00007f5f81ce6a6e in QThreadPrivate::start (arg=0x260be60) at thread/qthread_unix.cpp:331
#9  0x00007f5f80e030a4 in start_thread (arg=0x7f5f6b5ef700) at pthread_create.c:309
#10 0x00007f5f8160306d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7f5f613d9700 (LWP 28155)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f5f68db733a in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f5f68db6a77 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007f5f80e030a4 in start_thread (arg=0x7f5f613d9700) at pthread_create.c:309
#4  0x00007f5f8160306d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7f5f5eb39700 (LWP 28156)):
#0  0x00007f5f815f65fd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f5f7e3f84d0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5f7e3b4cc4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5f7e3b5180 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5f7e3b52ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5f81f1e58b in QEventDispatcherGlib::processEvents (this=0x7f5f580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f5f81ec554a in QEventLoop::exec (this=this@entry=0x7f5f5eb38c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f5f81ce1ac4 in QThread::exec (this=this@entry=0x28c6060) at thread/qthread.cpp:503
#8  0x00007f5f84562105 in QQmlThreadPrivate::run (this=0x28c6060) at qml/ftw/qqmlthread.cpp:141
#9  0x00007f5f81ce6a6e in QThreadPrivate::start (arg=0x28c6060) at thread/qthread_unix.cpp:331
#10 0x00007f5f80e030a4 in start_thread (arg=0x7f5f5eb39700) at pthread_create.c:309
#11 0x00007f5f8160306d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f5f5cad3700 (LWP 28159)):
#0  0x00007f5f815f65fd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f5f7e3f84d0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5f7e3b4cc4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5f7e3b5180 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5f7e3b52ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5f81f1e58b in QEventDispatcherGlib::processEvents (this=0x7f5f500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#6  0x00007f5f81ec554a in QEventLoop::exec (this=this@entry=0x7f5f5cad2c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007f5f81ce1ac4 in QThread::exec (this=this@entry=0x296b8b0) at thread/qthread.cpp:503
#8  0x00007f5f84562105 in QQmlThreadPrivate::run (this=0x296b8b0) at qml/ftw/qqmlthread.cpp:141
#9  0x00007f5f81ce6a6e in QThreadPrivate::start (arg=0x296b8b0) at thread/qthread_unix.cpp:331
#10 0x00007f5f80e030a4 in start_thread (arg=0x7f5f5cad3700) at pthread_create.c:309
#11 0x00007f5f8160306d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f5f56fbd700 (LWP 28160)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f5f8690d1c4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f5f8690d209 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f5f80e030a4 in start_thread (arg=0x7f5f56fbd700) at pthread_create.c:309
#4  0x00007f5f8160306d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f5ecffff700 (LWP 28161)):
#0  0x00007f5f7e3b4878 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5f7e3b510b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f5f7e3b52ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5f81f1e58b in QEventDispatcherGlib::processEvents (this=0x7f5ec80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f5f81ec554a in QEventLoop::exec (this=this@entry=0x7f5ecfffec10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f5f81ce1ac4 in QThread::exec (this=this@entry=0x2bcc850) at thread/qthread.cpp:503
#6  0x00007f5f84ee4136 in QQuickPixmapReader::run (this=0x2bcc850) at util/qquickpixmapcache.cpp:760
#7  0x00007f5f81ce6a6e in QThreadPrivate::start (arg=0x2bcc850) at thread/qthread_unix.cpp:331
#8  0x00007f5f80e030a4 in start_thread (arg=0x7f5ecffff700) at pthread_create.c:309
#9  0x00007f5f8160306d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f5f86ea7940 (LWP 28144)):
[KCrash Handler]
#6  0x00007f5f84334358 in VDMModelDelegateDataType::notify (this=<optimized out>, items=..., index=2, count=1, roles=...) at util/qqmladaptormodel.cpp:167
#7  0x00007f5f845a397a in QQmlAdaptorModel::notify (roles=..., count=1, index=<optimized out>, items=..., this=0x3920a48) at ../../include/QtQml/5.5.1/QtQml/private/../../../../../src/qml/util/qqmladaptormodel_p.h:118
#8  QQmlDelegateModel::_q_itemsChanged (this=<optimized out>, index=2, count=1, roles=...) at types/qqmldelegatemodel.cpp:1144
#9  0x00007f5f845a3ada in QQmlDelegateModel::_q_dataChanged (this=<optimized out>, begin=..., end=..., roles=...) at types/qqmldelegatemodel.cpp:1546
#10 0x00007f5f845cb04c in QQmlDelegateModel::qt_static_metacall (_o=_o@entry=0x3920990, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=12, _a=_a@entry=0x7ffd695ddaf0) at .moc/moc_qqmldelegatemodel_p.cpp:203
#11 0x00007f5f845cb838 in QQmlDelegateModel::qt_metacall (this=0x3920990, _c=QMetaObject::InvokeMetaMethod, _id=12, _a=0x7ffd695ddaf0) at .moc/moc_qqmldelegatemodel_p.cpp:344
#12 0x00007f5f81ef6ae0 in QMetaObject::activate (sender=0x390a5f0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd695ddaf0) at kernel/qobject.cpp:3728
#13 0x00007f5f81ef7127 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f5f82110e20 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd695ddaf0) at kernel/qobject.cpp:3578
#14 0x00007f5f81f72e7c in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:548
#15 0x00007f5ecc43a054 in TaskManager::TasksModelPrivate::itemChanged (this=0x3913420, changes=...) at ../../libtaskmanager/tasksmodel.cpp:521
#16 0x00007f5ecc43b2f7 in TaskManager::TasksModel::qt_static_metacall (_o=_o@entry=0x390a5f0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=9, _a=_a@entry=0x7ffd695ddce0) at ./moc_tasksmodel.cpp:214
#17 0x00007f5f81ef692a in QMetaObject::activate (sender=0x435a7c0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd695ddce0) at kernel/qobject.cpp:3713
#18 0x00007f5f81ef7127 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f5ecc65f960 <TaskManager::AbstractGroupableItem::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd695ddce0) at kernel/qobject.cpp:3578
#19 0x00007f5ecc443228 in TaskManager::AbstractGroupableItem::changed (this=<optimized out>, _t1=...) at moc_abstractgroupableitem.cpp:223
#20 0x00007f5ecc4306a0 in TaskManager::TaskItemPrivate::filterChange (change=..., this=<optimized out>) at ../../libtaskmanager/taskitem.cpp:73
#21 TaskManager::TaskItem::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./moc_taskitem.cpp:147
#22 0x00007f5f81ef692a in QMetaObject::activate (sender=sender@entry=0x38ffbe0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd695dde30) at kernel/qobject.cpp:3713
#23 0x00007f5f81ef7127 in QMetaObject::activate (sender=sender@entry=0x38ffbe0, m=m@entry=0x7f5ecc65f660 <TaskManager::Task::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd695dde30) at kernel/qobject.cpp:3578
#24 0x00007f5ecc443418 in TaskManager::Task::changed (this=this@entry=0x38ffbe0, _t1=...) at moc_task.cpp:359
#25 0x00007f5ecc4226fb in TaskManager::Task::setActive (this=this@entry=0x38ffbe0, a=a@entry=true) at ../../libtaskmanager/task.cpp:178
#26 0x00007f5ecc4364ac in TaskManager::TaskManager::activeWindowChanged (this=0x7f5ecc661850 <TaskManager::(anonymous namespace)::Q_QGS_privateTaskManagerSelf::innerFunction()::holder>, w=<optimized out>) at ../../libtaskmanager/taskmanager.cpp:412
#27 0x00007f5ecc4387f7 in TaskManager::TaskManager::qt_static_metacall (_o=_o@entry=0x7f5ecc661850 <TaskManager::(anonymous namespace)::Q_QGS_privateTaskManagerSelf::innerFunction()::holder>, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=10, _a=_a@entry=0x7ffd695de020) at ./moc_taskmanager.cpp:176
#28 0x00007f5f81ef692a in QMetaObject::activate (sender=sender@entry=0x7f5f8428c200 <(anonymous namespace)::Q_QGS_g_kwmInstanceContainer::innerFunction()::holder>, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffd695de020) at kernel/qobject.cpp:3713
#29 0x00007f5f81ef7127 in QMetaObject::activate (sender=sender@entry=0x7f5f8428c200 <(anonymous namespace)::Q_QGS_g_kwmInstanceContainer::innerFunction()::holder>, m=m@entry=0x7f5f8428ab80 <KWindowSystem::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffd695de020) at kernel/qobject.cpp:3578
#30 0x00007f5f8407cd12 in KWindowSystem::activeWindowChanged (this=this@entry=0x7f5f8428c200 <(anonymous namespace)::Q_QGS_g_kwmInstanceContainer::innerFunction()::holder>, _t1=69206293) at moc_kwindowsystem.cpp:302
#31 0x00007f5f703481e1 in NETEventFilter::nativeEventFilter (this=0x38fa560, ev=0x7f5f6c005f10) at ../../../../src/platforms/xcb/kwindowsystem.cpp:208
#32 0x00007f5f81ec46df in QAbstractEventDispatcher::filterNativeEvent (this=<optimized out>, eventType=..., message=message@entry=0x7f5f6c005f10, result=result@entry=0x7ffd695de158) at kernel/qabstracteventdispatcher.cpp:460
#33 0x00007f5f738412a4 in QXcbConnection::handleXcbEvent (this=this@entry=0x2511d80, event=event@entry=0x7f5f6c005f10) at qxcbconnection.cpp:1020
#34 0x00007f5f73842053 in QXcbConnection::processXcbEvents (this=0x2511d80) at qxcbconnection.cpp:1502
#35 0x00007f5f81ef77f1 in QObject::event (this=0x2511d80, e=<optimized out>) at kernel/qobject.cpp:1239
#36 0x00007f5f829cc9dc in QApplicationPrivate::notify_helper (this=this@entry=0x2508120, receiver=receiver@entry=0x2511d80, e=e@entry=0x7f5f6c016260) at kernel/qapplication.cpp:3716
#37 0x00007f5f829d1ea6 in QApplication::notify (this=0x7ffd695de900, receiver=0x2511d80, e=0x7f5f6c016260) at kernel/qapplication.cpp:3499
#38 0x00007f5f81ec7dbb in QCoreApplication::notifyInternal (this=0x7ffd695de900, receiver=0x2511d80, event=event@entry=0x7f5f6c016260) at kernel/qcoreapplication.cpp:965
#39 0x00007f5f81eca1b6 in QCoreApplication::sendEvent (event=0x7f5f6c016260, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#40 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x24fe570) at kernel/qcoreapplication.cpp:1593
#41 0x00007f5f81eca698 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#42 0x00007f5f81f1e163 in postEventSourceDispatch (s=0x25600d0) at kernel/qeventdispatcher_glib.cpp:271
#43 0x00007f5f7e3b4fe7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007f5f7e3b5240 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f5f7e3b52ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f5f81f1e56f in QEventDispatcherGlib::processEvents (this=0x2560390, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#47 0x00007f5f81ec554a in QEventLoop::exec (this=this@entry=0x7ffd695de780, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#48 0x00007f5f81ecd62c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#49 0x00007f5f82201cac in QGuiApplication::exec () at kernel/qguiapplication.cpp:1527
#50 0x00007f5f829c8e15 in QApplication::exec () at kernel/qapplication.cpp:2976
#51 0x0000000000431273 in main (argc=4, argv=<optimized out>) at ../../shell/main.cpp:176

Possible duplicates by query: bug 354214, bug 352946.

Reported using DrKonqi