Application: plasmashell (5.4.3)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-trunk-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

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

Nothing special. It crashes at random ordinary events, like closing a window.

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 0x7f1a7fe16940 (LWP 31532))]

Thread 7 (Thread 0x7f1a68a0c700 (LWP 31534)):
#0  0x00007f1a7a563a9d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f1a773092fc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f1a5c003070, timeout=<optimized out>, context=0x7f1a5c000990) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:4135
#2  0x00007f1a773092fc in g_main_context_iterate (context=context@entry=0x7f1a5c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3835
#3  0x00007f1a7730940c in g_main_context_iteration (context=0x7f1a5c000990, may_block=may_block@entry=1) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3901
#4  0x00007f1a7ae802fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f1a5c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f1a7ae272fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f1a68a0bc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f1a7ac438d4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f1a7d4d8105 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f1a7ac4887e in QThreadPrivate::start(void*) (arg=0x1779300) at thread/qthread_unix.cpp:331
#9  0x00007f1a79d65284 in start_thread (arg=0x7f1a68a0c700) at pthread_create.c:333
#10 0x00007f1a7a56c97d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f1a60e6b700 (LWP 31535)):
#0  0x00007f1a7a563a9d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f1a773092fc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f1a54002e70, timeout=<optimized out>, context=0x7f1a54000990) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:4135
#2  0x00007f1a773092fc in g_main_context_iterate (context=context@entry=0x7f1a54000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3835
#3  0x00007f1a7730940c in g_main_context_iteration (context=0x7f1a54000990, may_block=may_block@entry=1) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3901
#4  0x00007f1a7ae802fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f1a540008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f1a7ae272fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f1a60e6ac60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f1a7ac438d4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f1a7d4d8105 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f1a7ac4887e in QThreadPrivate::start(void*) (arg=0x1861d40) at thread/qthread_unix.cpp:331
#9  0x00007f1a79d65284 in start_thread (arg=0x7f1a60e6b700) at pthread_create.c:333
#10 0x00007f1a7a56c97d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f1a59d8a700 (LWP 31538)):
#0  0x00007f1a7734d9f9 in g_mutex_lock (mutex=mutex@entry=0x7f1a4c000990) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gthread-posix.c:1338
#1  0x00007f1a773092be in g_main_context_iterate (context=context@entry=0x7f1a4c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3844
#2  0x00007f1a7730940c in g_main_context_iteration (context=0x7f1a4c000990, may_block=may_block@entry=1) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3901
#3  0x00007f1a7ae802fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f1a4c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007f1a7ae272fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f1a59d89c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f1a7ac438d4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f1a7d4d8105 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f1a7ac4887e in QThreadPrivate::start(void*) (arg=0x1bb5980) at thread/qthread_unix.cpp:331
#8  0x00007f1a79d65284 in start_thread (arg=0x7f1a59d8a700) at pthread_create.c:333
#9  0x00007f1a7a56c97d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f1a53fff700 (LWP 31539)):
#0  0x00007f1a79d6a8cf in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1a7f8851c4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f1a7f885209 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f1a79d65284 in start_thread (arg=0x7f1a53fff700) at pthread_create.c:333
#4  0x00007f1a7a56c97d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f1a51bcb700 (LWP 31540)):
#0  0x00007f1a7a563a9d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f1a773092fc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7f19c8003120, timeout=<optimized out>, context=0x7f19c8000990) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:4135
#2  0x00007f1a773092fc in g_main_context_iterate (context=context@entry=0x7f19c8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3835
#3  0x00007f1a7730940c in g_main_context_iteration (context=0x7f19c8000990, may_block=may_block@entry=1) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3901
#4  0x00007f1a7ae802fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f19c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f1a7ae272fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f1a51bcac10, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f1a7ac438d4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f1a7de60136 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f1a7ac4887e in QThreadPrivate::start(void*) (arg=0x1e2c920) at thread/qthread_unix.cpp:331
#9  0x00007f1a79d65284 in start_thread (arg=0x7f1a51bcb700) at pthread_create.c:333
#10 0x00007f1a7a56c97d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f19bc7c6700 (LWP 31545)):
#0  0x00007f1a7734d9f9 in g_mutex_lock (mutex=mutex@entry=0x7f19b4000990) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gthread-posix.c:1338
#1  0x00007f1a77308d3c in g_main_context_check (context=context@entry=0x7f19b4000990, max_priority=2147483647, fds=fds@entry=0x7f19b40048c0, n_fds=n_fds@entry=1) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3683
#2  0x00007f1a773092a0 in g_main_context_iterate (context=context@entry=0x7f19b4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3837
#3  0x00007f1a7730940c in g_main_context_iteration (context=0x7f19b4000990, may_block=may_block@entry=1) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3901
#4  0x00007f1a7ae802fb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f19b40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f1a7ae272fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f19bc7c5c40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f1a7ac438d4 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f19becbf637 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f1a7ac4887e in QThreadPrivate::start(void*) (arg=0x3f3f1b0) at thread/qthread_unix.cpp:331
#9  0x00007f1a79d65284 in start_thread (arg=0x7f19bc7c6700) at pthread_create.c:333
#10 0x00007f1a7a56c97d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f1a7fe16940 (LWP 31532)):
[KCrash Handler]
#6  0x00007f1a7ae58ee5 in QMetaObject::activate(QObject*, int, void**) (sender=0x185fbe0, signal_index=6, argv=0x0) at kernel/qobject.cpp:3759
#7  0x00007f1a7d2aa392 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f1a7d51997a in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f1a7d54104c in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f1a7d541838 in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f1a7ae58880 in QMetaObject::activate(QObject*, int, int, void**) (sender=0x3c6cd50, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdf3ac3340) at kernel/qobject.cpp:3728
#12 0x00007f1a7ae58ec7 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=<optimized out>, m=m@entry=0x7f1a7b072ec0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdf3ac3340) at kernel/qobject.cpp:3578
#13 0x00007f1a7aed4bdc in QAbstractItemModel::dataChanged(QModelIndex const&, QModelIndex const&, QVector<int> const&) (this=<optimized out>, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:548
#14 0x00007f19c5cfaaf4 in TaskManager::TasksModelPrivate::itemChanged(QFlags<TaskManager::TaskChange>) (this=0x3c6d380, changes=...) at ../../libtaskmanager/tasksmodel.cpp:521
#15 0x00007f19c5cfbd97 in TaskManager::TasksModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=_o@entry=0x3c6cd50, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=9, _a=_a@entry=0x7ffdf3ac3530) at ./moc_tasksmodel.cpp:214
#16 0x00007f1a7ae586ca in QMetaObject::activate(QObject*, int, int, void**) (sender=0x4264dc0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdf3ac3530) at kernel/qobject.cpp:3713
#17 0x00007f1a7ae58ec7 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=<optimized out>, m=m@entry=0x7f19c5f1f960 <TaskManager::AbstractGroupableItem::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdf3ac3530) at kernel/qobject.cpp:3578
#18 0x00007f19c5d03cc8 in TaskManager::AbstractGroupableItem::changed(QFlags<TaskManager::TaskChange>) (this=<optimized out>, _t1=...) at moc_abstractgroupableitem.cpp:223
#19 0x00007f19c5cf1140 in TaskManager::TaskItem::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (change=..., this=<optimized out>) at ../../libtaskmanager/taskitem.cpp:73
#20 0x00007f19c5cf1140 in TaskManager::TaskItem::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./moc_taskitem.cpp:147
#21 0x00007f1a7ae586ca in QMetaObject::activate(QObject*, int, int, void**) (sender=sender@entry=0x3a91890, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdf3ac3680) at kernel/qobject.cpp:3713
#22 0x00007f1a7ae58ec7 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=sender@entry=0x3a91890, m=m@entry=0x7f19c5f1f660 <TaskManager::Task::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffdf3ac3680) at kernel/qobject.cpp:3578
#23 0x00007f19c5d03eb8 in TaskManager::Task::changed(QFlags<TaskManager::TaskChange>) (this=this@entry=0x3a91890, _t1=...) at moc_task.cpp:359
#24 0x00007f19c5ce319b in TaskManager::Task::setActive(bool) (this=this@entry=0x3a91890, a=a@entry=true) at ../../libtaskmanager/task.cpp:178
#25 0x00007f19c5cf6f4c in TaskManager::TaskManager::activeWindowChanged(unsigned long long) (this=0x7f19c5f216f0 <TaskManager::(anonymous namespace)::Q_QGS_privateTaskManagerSelf::innerFunction()::holder>, w=<optimized out>) at ../../libtaskmanager/taskmanager.cpp:412
#26 0x00007f19c5cf9297 in TaskManager::TaskManager::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=_o@entry=0x7f19c5f216f0 <TaskManager::(anonymous namespace)::Q_QGS_privateTaskManagerSelf::innerFunction()::holder>, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=10, _a=_a@entry=0x7ffdf3ac3870) at ./moc_taskmanager.cpp:176
#27 0x00007f1a7ae586ca in QMetaObject::activate(QObject*, int, int, void**) (sender=0x7f1a7d202120, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3713
#28 0x00007f1a7cff2c62 in KWindowSystem::activeWindowChanged(unsigned long long) () at /usr/lib/x86_64-linux-gnu/libKF5WindowSystem.so.5
#29 0x00007f1a68c2029b in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kwindowsystem.platforms/KF5WindowSystemX11Plugin.so
#30 0x00007f1a7ae2648f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) (this=<optimized out>, eventType=..., message=message@entry=0x7f1a64003580, result=result@entry=0x7ffdf3ac39a8) at kernel/qabstracteventdispatcher.cpp:460
#31 0x00007f1a6c0b4034 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) (this=this@entry=0x16a5c10, event=event@entry=0x7f1a64003580) at qxcbconnection.cpp:1021
#32 0x00007f1a6c0b4de3 in QXcbConnection::processXcbEvents() (this=0x16a5c10) at qxcbconnection.cpp:1507
#33 0x00007f1a7ae59591 in QObject::event(QEvent*) (this=0x16a5c10, e=<optimized out>) at kernel/qobject.cpp:1239
#34 0x00007f1a7b92cffc in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x169d1c0, receiver=receiver@entry=0x16a5c10, e=e@entry=0x7f1a64005bf0) at kernel/qapplication.cpp:3716
#35 0x00007f1a7b9324c6 in QApplication::notify(QObject*, QEvent*) (this=0x7ffdf3ac4150, receiver=0x16a5c10, e=0x7f1a64005bf0) at kernel/qapplication.cpp:3499
#36 0x00007f1a7ae29b6b in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7ffdf3ac4150, receiver=0x16a5c10, event=event@entry=0x7f1a64005bf0) at kernel/qcoreapplication.cpp:965
#37 0x00007f1a7ae2bf66 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (event=0x7f1a64005bf0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#38 0x00007f1a7ae2bf66 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1693600) at kernel/qcoreapplication.cpp:1593
#39 0x00007f1a7ae2c448 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#40 0x00007f1a7ae7fed3 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x16d6df0) at kernel/qeventdispatcher_glib.cpp:271
#41 0x00007f1a77309107 in g_main_context_dispatch (context=0x7f1a640016f0) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3154
#42 0x00007f1a77309107 in g_main_context_dispatch (context=context@entry=0x7f1a640016f0) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3769
#43 0x00007f1a77309360 in g_main_context_iterate (context=context@entry=0x7f1a640016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3840
#44 0x00007f1a7730940c in g_main_context_iteration (context=0x7f1a640016f0, may_block=may_block@entry=1) at /build/glib2.0-F6SQOr/glib2.0-2.47.3/./glib/gmain.c:3901
#45 0x00007f1a7ae802df in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x16d4ee0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#46 0x00007f1a7ae272fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffdf3ac3fd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#47 0x00007f1a7ae2f3dc in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1229
#48 0x00007f1a7b1638bc in QGuiApplication::exec() () at kernel/qguiapplication.cpp:1527
#49 0x00007f1a7b929435 in QApplication::exec() () at kernel/qapplication.cpp:2976
#50 0x0000000000431b03 in main(int, char**) (argc=1, argv=<optimized out>) at ../../shell/main.cpp:176

Reported using DrKonqi