Bug 387501

Application: plasmashell (5.8.7)

Qt Version: 5.6.2
Frameworks Version: 5.32.0
Operating System: Linux 4.4.92-31-default x86_64
Distribution: "openSUSE Leap 42.3"

-- Information about the crash:
- What I was doing when the application crashed:
Closing several chat windows in pidgin, these were login messages from irc servers.
Had one chat window left open when plasma crashed. 
Since pidgin is gtk based, it may be an issue with using it in QT

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff06b5e3900 (LWP 2705))]

Thread 16 (Thread 0x7fef79cc9700 (LWP 13116)):
#0  0x00007ff0642d50bf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff0651c269b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x6142d30) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x5eebfa0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007ff0690bc55b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007ff0690be2d5 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x5eebf20) at thread/qthread_unix.cpp:365
#6  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#7  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7fef7b327700 (LWP 12403)):
#0  0x00007ff0642d50bf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff0651c269b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x3fa97d0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3fa7b50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007ff0690bc55b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007ff0690be2d5 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x3fa7ad0) at thread/qthread_unix.cpp:365
#6  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#7  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7fef7a4ca700 (LWP 12331)):
#0  0x00007ff0642d50bf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff0651c269b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x3f6f6f0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x591aeb0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007ff0690bc55b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007ff0690be2d5 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x591ae30) at thread/qthread_unix.cpp:365
#6  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#7  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7fef637fd700 (LWP 12227)):
#0  0x00007ff0642d50bf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff0651c269b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x58c82b0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x4928180, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007ff0690bc55b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007ff0690be2d5 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x4928100) at thread/qthread_unix.cpp:365
#6  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#7  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7fef62ffc700 (LWP 4095)):
#0  0x00007ff0642d50bf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff0651c269b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x3a42850) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x4af4730, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007ff0690bc55b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007ff0690be2d5 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x4af46b0) at thread/qthread_unix.cpp:365
#6  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#7  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7fef871fe700 (LWP 3170)):
#0  0x00007ff0642d50bf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff0651c269b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x4713a50) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x49c5020, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007ff0690bc55b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007ff0690be2d5 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x49c4fa0) at thread/qthread_unix.cpp:365
#6  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#7  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7fef8c9e6700 (LWP 3112)):
#0  0x00007ff0642d50bf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff0651c269b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x47966d0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x47964a0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007ff0690bc55b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007ff0690be2d5 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x4796420) at thread/qthread_unix.cpp:365
#6  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#7  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7fef8d408700 (LWP 3100)):
#0  0x00007ff064ac720d in poll () from /lib64/libc.so.6
#1  0x00007ff061178314 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ff06117842c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff0653d41ab in QEventDispatcherGlib::processEvents (this=0x7fef880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007ff065381bfb in QEventLoop::exec (this=this@entry=0x7fef8d407c90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:206
#5  0x00007ff0651bcf5a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fef8e8318f7 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#7  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x4295d60) at thread/qthread_unix.cpp:365
#8  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#9  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7fefa553d700 (LWP 3082)):
#0  0x00007ff061177960 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#1  0x00007ff061178230 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ff06117842c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff0653d41ab in QEventDispatcherGlib::processEvents (this=0x7fefa00e2350, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007ff065381bfb in QEventLoop::exec (this=this@entry=0x7fefa553cc70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:206
#5  0x00007ff0651bcf5a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007ff06904e822 in ?? () from /usr/lib64/libQt5Quick.so.5
#7  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x32a2800) at thread/qthread_unix.cpp:365
#8  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#9  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fef97041700 (LWP 3078)):
#0  0x00007ff0642d50bf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff0651c269b in QWaitConditionPrivate::wait (time=18446744073709551615, this=0x36ffbf0) at thread/qwaitcondition_unix.cpp:136
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3656a40, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#3  0x00007ff0690bc55b in ?? () from /usr/lib64/libQt5Quick.so.5
#4  0x00007ff0690be2d5 in ?? () from /usr/lib64/libQt5Quick.so.5
#5  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x36569c0) at thread/qthread_unix.cpp:365
#6  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#7  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7ff03a2ca700 (LWP 3001)):
#0  0x00007ff0642d50bf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff06acb393b in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007ff06acb3969 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#4  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7ff03b366700 (LWP 2997)):
#0  0x00007ff064ac720d in poll () from /lib64/libc.so.6
#1  0x00007ff061178314 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ff06117842c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff0653d41ab in QEventDispatcherGlib::processEvents (this=0x7ff0300008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#4  0x00007ff065381bfb in QEventLoop::exec (this=this@entry=0x7ff03b365cd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:206
#5  0x00007ff0651bcf5a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x2089060) at thread/qthread_unix.cpp:365
#7  0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#8  0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7ff04206b700 (LWP 2944)):
#0  0x00007ff064ac328d in read () from /lib64/libc.so.6
#1  0x00007ff05c520073 in ?? () from /usr/lib64/tls/libnvidia-tls.so.384.98
#2  0x00007ff0611b8750 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff061177e49 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#4  0x00007ff0611782a8 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ff06117842c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#6  0x00007ff0653d41ab in QEventDispatcherGlib::processEvents (this=0x7ff0340008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#7  0x00007ff065381bfb in QEventLoop::exec (this=this@entry=0x7ff04206acb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:206
#8  0x00007ff0651bcf5a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#9  0x00007ff0684ca3d8 in ?? () from /usr/lib64/libQt5Qml.so.5
#10 0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x1d55760) at thread/qthread_unix.cpp:365
#11 0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#12 0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7ff0438b9700 (LWP 2824)):
#0  0x00007ff0651ba44a in std::__atomic_base<QMutexData*>::compare_exchange_strong (__m2=std::memory_order_acquire, __m1=std::memory_order_acquire, __p2=0x1, __p1=@0x7ff0438b8a90: 0x0, this=<optimized out>) at /usr/include/c++/4.8/bits/atomic_base.h:844
#1  std::atomic<QMutexData*>::compare_exchange_strong (__p2=0x1, __m=std::memory_order_acquire, __p1=@0x7ff0438b8a90: 0x0, this=<optimized out>) at /usr/include/c++/4.8/atomic:445
#2  QAtomicOps<QMutexData*>::testAndSetAcquire<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=...) at ../../src/corelib/arch/qatomic_cxx11.h:158
#3  QBasicAtomicPointer<QMutexData>::testAndSetAcquire (currentValue=<synthetic pointer>: <optimized out>, newValue=0x1, expectedValue=0x0, this=this@entry=0x1c00b58) at ../../src/corelib/thread/qbasicatomic.h:276
#4  QBasicMutex::fastTryLock (current=<synthetic pointer>: <optimized out>, this=this@entry=0x1c00b58) at thread/qmutex.h:82
#5  QMutex::lock (this=this@entry=0x1c00b58) at thread/qmutex.cpp:219
#6  0x00007ff0653d47c5 in QMutexLocker::QMutexLocker (m=0x1c00b58, this=<synthetic pointer>) at ../../src/corelib/thread/qmutex.h:128
#7  QThreadData::canWaitLocked (this=0x1c00b30) at ../../src/corelib/thread/qthread_p.h:246
#8  postEventSourcePrepare (timeout=<synthetic pointer>, s=0x7ff03c0012f0) at kernel/qeventdispatcher_glib.cpp:253
#9  postEventSourceCheck (source=0x7ff03c0012f0) at kernel/qeventdispatcher_glib.cpp:263
#10 0x00007ff061177da1 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#11 0x00007ff0611782a8 in ?? () from /usr/lib64/libglib-2.0.so.0
#12 0x00007ff06117842c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#13 0x00007ff0653d41ab in QEventDispatcherGlib::processEvents (this=0x7ff03c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#14 0x00007ff065381bfb in QEventLoop::exec (this=this@entry=0x7ff0438b8cb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:206
#15 0x00007ff0651bcf5a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#16 0x00007ff0684ca3d8 in ?? () from /usr/lib64/libQt5Qml.so.5
#17 0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x1bfe440) at thread/qthread_unix.cpp:365
#18 0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#19 0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7ff058028700 (LWP 2736)):
#0  0x00007ff064ac328d in read () from /lib64/libc.so.6
#1  0x00007ff05c520073 in ?? () from /usr/lib64/tls/libnvidia-tls.so.384.98
#2  0x00007ff0611b8750 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff061177e49 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#4  0x00007ff0611782a8 in ?? () from /usr/lib64/libglib-2.0.so.0
#5  0x00007ff06117842c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#6  0x00007ff0653d41ab in QEventDispatcherGlib::processEvents (this=0x7ff0500008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#7  0x00007ff065381bfb in QEventLoop::exec (this=this@entry=0x7ff058027ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:206
#8  0x00007ff0651bcf5a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#9  0x00007ff0657e8295 in ?? () from /usr/lib64/libQt5DBus.so.5
#10 0x00007ff0651c1a29 in QThreadPrivate::start (arg=0x7ff065a51ce0) at thread/qthread_unix.cpp:365
#11 0x00007ff0642d0744 in start_thread () from /lib64/libpthread.so.0
#12 0x00007ff064acfaad in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7ff06b5e3900 (LWP 2705)):
[KCrash Handler]
#6  QSortFilterProxyModelPrivate::updateChildrenMapping (this=this@entry=0x309fb70, source_parent=..., parent_mapping=parent_mapping@entry=0x3bd17a0, start=start@entry=2, end=end@entry=2, delta_item_count=delta_item_count@entry=1, remove=remove@entry=true, orient=Qt::Vertical) at itemmodels/qsortfilterproxymodel.cpp:969
#7  0x00007ff06534f0af in QSortFilterProxyModelPrivate::source_items_removed (orient=Qt::Vertical, end=<optimized out>, start=2, source_parent=..., this=0x309fb70) at itemmodels/qsortfilterproxymodel.cpp:911
#8  QSortFilterProxyModelPrivate::_q_sourceRowsRemoved (this=0x309fb70, source_parent=..., start=2, end=<optimized out>) at itemmodels/qsortfilterproxymodel.cpp:1418
#9  0x00007ff065355f19 in QSortFilterProxyModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qsortfilterproxymodel.cpp:211
#10 0x00007ff0653ad7d1 in QMetaObject::activate (sender=sender@entry=0x30e4fb0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7ffe51cb4b80) at kernel/qobject.cpp:3730
#11 0x00007ff0653ae3d7 in QMetaObject::activate (sender=sender@entry=0x30e4fb0, m=m@entry=0x7ff0657c9ca0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=12, argv=argv@entry=0x7ffe51cb4b80) at kernel/qobject.cpp:3595
#12 0x00007ff065424334 in QAbstractItemModel::rowsRemoved (this=this@entry=0x30e4fb0, _t1=..., _t2=2, _t3=2) at .moc/moc_qabstractitemmodel.cpp:615
#13 0x00007ff065332751 in QAbstractItemModel::endRemoveRows (this=0x30e4fb0) at itemmodels/qabstractitemmodel.cpp:2678
#14 0x00007fefa450f55f in TaskManager::TaskGroupingProxyModel::Private::sourceRowsAboutToBeRemoved (this=0x30d5140, parent=..., first=<optimized out>, last=3) at /usr/src/debug/plasma-workspace-5.8.7/libtaskmanager/taskgroupingproxymodel.cpp:197
#15 0x00007fefa4512119 in TaskManager::TaskGroupingProxyModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/plasma-workspace-5.8.7/build/libtaskmanager/moc_taskgroupingproxymodel.cpp:152
#16 0x00007ff0653ad7d1 in QMetaObject::activate (sender=sender@entry=0x30f6c50, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7ffe51cb4eb0) at kernel/qobject.cpp:3730
#17 0x00007ff0653ae3d7 in QMetaObject::activate (sender=sender@entry=0x30f6c50, m=m@entry=0x7ff0657c9ca0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7ffe51cb4eb0) at kernel/qobject.cpp:3595
#18 0x00007ff0654242e4 in QAbstractItemModel::rowsAboutToBeRemoved (this=this@entry=0x30f6c50, _t1=..., _t2=_t2@entry=3, _t3=_t3@entry=3) at .moc/moc_qabstractitemmodel.cpp:608
#19 0x00007ff065331ed4 in QAbstractItemModel::beginRemoveRows (this=0x30f6c50, parent=..., first=3, last=3) at itemmodels/qabstractitemmodel.cpp:2661
#20 0x00007ff065350a0d in QSortFilterProxyModelPrivate::remove_proxy_interval (emit_signal=true, orient=Qt::Vertical, proxy_parent=..., proxy_end=3, proxy_start=3, proxy_to_source=..., source_to_proxy=..., this=0x30f20d0) at itemmodels/qsortfilterproxymodel.cpp:577
#21 QSortFilterProxyModelPrivate::remove_source_items (this=this@entry=0x30f20d0, source_to_proxy=..., proxy_to_source=..., source_items=..., source_parent=..., orient=orient@entry=Qt::Vertical, emit_signal=emit_signal@entry=true) at itemmodels/qsortfilterproxymodel.cpp:559
#22 0x00007ff065350bbd in QSortFilterProxyModelPrivate::source_items_about_to_be_removed (this=0x30f20d0, source_parent=..., start=3, end=3, orient=orient@entry=Qt::Vertical) at itemmodels/qsortfilterproxymodel.cpp:860
#23 0x00007ff065355ef8 in QSortFilterProxyModelPrivate::_q_sourceRowsAboutToBeRemoved (end=<optimized out>, start=<optimized out>, source_parent=..., this=<optimized out>) at itemmodels/qsortfilterproxymodel.cpp:1411
#24 QSortFilterProxyModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qsortfilterproxymodel.cpp:210
#25 0x00007ff0653ad7d1 in QMetaObject::activate (sender=sender@entry=0x30d57e0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7ffe51cb5200) at kernel/qobject.cpp:3730
#26 0x00007ff0653ae3d7 in QMetaObject::activate (sender=sender@entry=0x30d57e0, m=m@entry=0x7ff0657c9ca0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7ffe51cb5200) at kernel/qobject.cpp:3595
#27 0x00007ff0654242e4 in QAbstractItemModel::rowsAboutToBeRemoved (this=this@entry=0x30d57e0, _t1=..., _t2=_t2@entry=3, _t3=_t3@entry=3) at .moc/moc_qabstractitemmodel.cpp:608
#28 0x00007ff065331ed4 in QAbstractItemModel::beginRemoveRows (this=0x30d57e0, parent=..., first=3, last=3) at itemmodels/qabstractitemmodel.cpp:2661
#29 0x00007ff02c0c4ed5 in KConcatenateRowsProxyModelPrivate::slotRowsAboutToBeRemoved (this=0x30e5d20, start=3, end=3) at /usr/src/debug/kitemmodels-5.32.0/src/kconcatenaterowsproxymodel.cpp:241
#30 0x00007ff02c0c5d21 in KConcatenateRowsProxyModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/kitemmodels-5.32.0/build/src/moc_kconcatenaterowsproxymodel.cpp:144
#31 0x00007ff0653ad7d1 in QMetaObject::activate (sender=sender@entry=0x309fa60, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7ffe51cb5480) at kernel/qobject.cpp:3730
#32 0x00007ff0653ae3d7 in QMetaObject::activate (sender=sender@entry=0x309fa60, m=m@entry=0x7ff0657c9ca0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7ffe51cb5480) at kernel/qobject.cpp:3595
#33 0x00007ff0654242e4 in QAbstractItemModel::rowsAboutToBeRemoved (this=this@entry=0x309fa60, _t1=..., _t2=_t2@entry=3, _t3=_t3@entry=3) at .moc/moc_qabstractitemmodel.cpp:608
#34 0x00007ff065331ed4 in QAbstractItemModel::beginRemoveRows (this=this@entry=0x309fa60, parent=..., first=first@entry=3, last=last@entry=3) at itemmodels/qabstractitemmodel.cpp:2661
#35 0x00007ff065349ecf in QIdentityProxyModelPrivate::_q_sourceRowsAboutToBeRemoved (end=3, start=3, parent=..., this=<optimized out>) at itemmodels/qidentityproxymodel.cpp:573
#36 QIdentityProxyModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/moc_qidentityproxymodel.cpp:150
#37 0x00007ff0653ad7d1 in QMetaObject::activate (sender=sender@entry=0x309f9c0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7ffe51cb56f0) at kernel/qobject.cpp:3730
#38 0x00007ff0653ae3d7 in QMetaObject::activate (sender=sender@entry=0x309f9c0, m=m@entry=0x7ff0657c9ca0 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7ffe51cb56f0) at kernel/qobject.cpp:3595
#39 0x00007ff0654242e4 in QAbstractItemModel::rowsAboutToBeRemoved (this=this@entry=0x309f9c0, _t1=..., _t2=_t2@entry=3, _t3=_t3@entry=3) at .moc/moc_qabstractitemmodel.cpp:608
#40 0x00007ff065331ed4 in QAbstractItemModel::beginRemoveRows (this=0x309f9c0, parent=..., first=first@entry=3, last=last@entry=3) at itemmodels/qabstractitemmodel.cpp:2661
#41 0x00007fefa45297d5 in TaskManager::XWindowTasksModel::Private::removeWindow (this=0x30a0710, window=65012713) at /usr/src/debug/plasma-workspace-5.8.7/libtaskmanager/xwindowtasksmodel.cpp:250
#42 0x00007ff0653adde3 in QtPrivate::QSlotObjectBase::call (a=0x7ffe51cb5950, r=0x309f9c0, this=0x30d3cc0) at ../../src/corelib/kernel/qobject_impl.h:124
#43 QMetaObject::activate (sender=sender@entry=0x7ff0681f7c00 <(anonymous namespace)::Q_QGS_g_kwmInstanceContainer::innerFunction()::holder>, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffe51cb5950) at kernel/qobject.cpp:3715
#44 0x00007ff0653ae3d7 in QMetaObject::activate (sender=sender@entry=0x7ff0681f7c00 <(anonymous namespace)::Q_QGS_g_kwmInstanceContainer::innerFunction()::holder>, m=m@entry=0x7ff0681f6b60 <KWindowSystem::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffe51cb5950) at kernel/qobject.cpp:3595
#45 0x00007ff067fe8ea2 in KWindowSystem::windowRemoved (this=this@entry=0x7ff0681f7c00 <(anonymous namespace)::Q_QGS_g_kwmInstanceContainer::innerFunction()::holder>, _t1=_t1@entry=65012713) at /usr/src/debug/kwindowsystem-5.32.0/build/src/moc_kwindowsystem.cpp:311
#46 0x00007ff043cdb185 in NETEventFilter::removeClient (this=0x22bc1f0, w=65012713) at /usr/src/debug/kwindowsystem-5.32.0/src/platforms/xcb/kwindowsystem.cpp:382
#47 0x00007ff067fe1771 in NETRootInfo::update (this=0x22bc1f0, properties=..., properties@entry=..., properties2=..., properties2@entry=...) at /usr/src/debug/kwindowsystem-5.32.0/src/platforms/xcb/netwm.cpp:2046
#48 0x00007ff067fe2642 in NETRootInfo::event (this=this@entry=0x22bc1f0, event=event@entry=0x7ff0480077d0, properties=properties@entry=0x7ffe51cb5ef0, properties2=properties2@entry=0x7ffe51cb5f00) at /usr/src/debug/kwindowsystem-5.32.0/src/platforms/xcb/netwm.cpp:1887
#49 0x00007ff067fe2872 in NETRootInfo::event (this=this@entry=0x22bc1f0, ev=ev@entry=0x7ff0480077d0, properties=properties@entry=0x7ffe51cb5fb0, properties_size=properties_size@entry=5) at /usr/src/debug/kwindowsystem-5.32.0/src/platforms/xcb/netwm.cpp:1672
#50 0x00007ff043cdab56 in NETEventFilter::nativeEventFilter (this=0x22bc1f0, ev=0x7ff0480077d0) at /usr/src/debug/kwindowsystem-5.32.0/src/platforms/xcb/kwindowsystem.cpp:237
#51 0x00007ff065380e90 in QAbstractEventDispatcher::filterNativeEvent (this=<optimized out>, eventType=..., message=message@entry=0x7ff0480077d0, result=result@entry=0x7ffe51cb6078) at kernel/qabstracteventdispatcher.cpp:460
#52 0x00007ff055d06434 in QXcbConnection::handleXcbEvent (this=this@entry=0x1ac45f0, event=event@entry=0x7ff0480077d0) at qxcbconnection.cpp:1094
#53 0x00007ff055d084db in QXcbConnection::processXcbEvents (this=0x1ac45f0) at qxcbconnection.cpp:1731
#54 0x00007ff0653aee26 in QObject::event (this=0x1ac45f0, e=<optimized out>) at kernel/qobject.cpp:1256
#55 0x00007ff06630628c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x1ac45f0, e=0x7ff048008590) at kernel/qapplication.cpp:3804
#56 0x00007ff06630a8ea in QApplication::notify (this=0x7ffe51cb6880, receiver=0x1ac45f0, e=0x7ff048008590) at kernel/qapplication.cpp:3561
#57 0x00007ff065383be5 in QCoreApplication::notifyInternal2 (receiver=0x1ac45f0, event=event@entry=0x7ff048008590) at kernel/qcoreapplication.cpp:1015
#58 0x00007ff0653859ca in QCoreApplication::sendEvent (event=0x7ff048008590, receiver=<optimized out>) at kernel/qcoreapplication.h:225
#59 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1a97c60) at kernel/qcoreapplication.cpp:1650
#60 0x00007ff065385f78 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1508
#61 0x00007ff0653d4b03 in postEventSourceDispatch (s=0x1af5fe0) at kernel/qeventdispatcher_glib.cpp:270
#62 0x00007ff061178134 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#63 0x00007ff061178388 in ?? () from /usr/lib64/libglib-2.0.so.0
#64 0x00007ff06117842c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#65 0x00007ff0653d41ab in QEventDispatcherGlib::processEvents (this=0x1b21370, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#66 0x00007ff065381bfb in QEventLoop::exec (this=this@entry=0x7ffe51cb6700, flags=..., flags@entry=...) at kernel/qeventloop.cpp:206
#67 0x00007ff065389ae6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#68 0x00007ff065b488ec in QGuiApplication::exec () at kernel/qguiapplication.cpp:1607
#69 0x00007ff066303495 in QApplication::exec () at kernel/qapplication.cpp:2979
#70 0x000000000041f0ff in main (argc=2, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.8.7/shell/main.cpp:166

Possible duplicates by query: bug 384503, bug 384360, bug 383647, bug 381974, bug 381006.

Reported using DrKonqi