Bug 289802

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.95 (4.8 RC1 (4.7.95) (Compiled from sources)
Qt Version: 4.7.4
Operating System: Linux 3.1.0-gentoo-r1 x86_64
Distribution: "Gentoo Base System release 2.0.3"

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

I was away from my laptop for 30 minutes and when I returned, I found korgac and plasma-desktop both to be crashed.
The crashes seem to be related to each other.

The backtrace of plasma-desktop is attached, the backtrace of korgac is available in bug#289801

Still looking for a way to properly reproduce this crash, but maybe the BTs itself provide already enough information to find the source of this crash.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f0da2b3b760 (LWP 15308))]

Thread 8 (Thread 0x7f0d7e512700 (LWP 15315)):
#0  0x00007f0da026f2fb in *__GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f0d9d2ae52a in g_main_context_poll (n_fds=1, fds=0x12407c0, timeout=<optimized out>, context=0x123ed30, priority=<optimized out>) at gmain.c:3386
#2  g_main_context_iterate (context=0x123ed30, block=1, dispatch=1, self=<optimized out>) at gmain.c:3068
#3  0x00007f0d9d2ae947 in g_main_context_iteration (context=0x123ed30, may_block=1) at gmain.c:3136
#4  0x00007f0da17e6b74 in QEventDispatcherGlib::processEvents (this=0x1211be0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f0da17bf268 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f0da17bf45f in QEventLoop::exec (this=0x7f0d7e511de0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f0da16e86a1 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007f0da17a3450 in QInotifyFileSystemWatcherEngine::run (this=0x1211770) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f0da16eaae3 in QThreadPrivate::start (arg=0x1211770) at thread/qthread_unix.cpp:331
#10 0x00007f0da145fa35 in start_thread (arg=0x7f0d7e512700) at pthread_create.c:301
#11 0x00007f0da027743d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 7 (Thread 0x7f0d7cfc9700 (LWP 15317)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f0d958b9464 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f0d95bd0180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f0d958b9493 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f0d95bde254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f0da145fa35 in start_thread (arg=0x7f0d7cfc9700) at pthread_create.c:301
#4  0x00007f0da027743d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 6 (Thread 0x7f0d86311700 (LWP 5805)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f0da16eb16a in wait (time=18446744073709551615, this=0x12aefc0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x131eae0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f0d94b54509 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1296610, th=0x262a690) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f0d94b564dc in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a8490, th=0x262a690) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f0d94b5563a in ThreadWeaver::ThreadRunHelper::run (this=0x7f0d86310e30, parent=0x1296610, th=0x262a690) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f0d94b556bc in ThreadWeaver::Thread::run (this=0x262a690) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f0da16eaae3 in QThreadPrivate::start (arg=0x262a690) at thread/qthread_unix.cpp:331
#8  0x00007f0da145fa35 in start_thread (arg=0x7f0d86311700) at pthread_create.c:301
#9  0x00007f0da027743d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 5 (Thread 0x7f0d69777700 (LWP 5806)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f0da16eb16a in wait (time=18446744073709551615, this=0x12aefc0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x131eae0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f0d94b54509 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1296610, th=0x397d6c0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f0d94b564dc in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a8490, th=0x397d6c0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f0d94b5563a in ThreadWeaver::ThreadRunHelper::run (this=0x7f0d69776e30, parent=0x1296610, th=0x397d6c0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f0d94b556bc in ThreadWeaver::Thread::run (this=0x397d6c0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f0da16eaae3 in QThreadPrivate::start (arg=0x397d6c0) at thread/qthread_unix.cpp:331
#8  0x00007f0da145fa35 in start_thread (arg=0x7f0d69777700) at pthread_create.c:301
#9  0x00007f0da027743d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 4 (Thread 0x7f0d844e1700 (LWP 5807)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f0da16eb16a in wait (time=18446744073709551615, this=0x12aefc0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x131eae0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f0d94b54509 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1296610, th=0x38901e0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f0d94b564dc in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a8490, th=0x38901e0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f0d94b5563a in ThreadWeaver::ThreadRunHelper::run (this=0x7f0d844e0e30, parent=0x1296610, th=0x38901e0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f0d94b556bc in ThreadWeaver::Thread::run (this=0x38901e0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f0da16eaae3 in QThreadPrivate::start (arg=0x38901e0) at thread/qthread_unix.cpp:331
#8  0x00007f0da145fa35 in start_thread (arg=0x7f0d844e1700) at pthread_create.c:301
#9  0x00007f0da027743d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 3 (Thread 0x7f0d6a514700 (LWP 5808)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f0da16eb16a in wait (time=18446744073709551615, this=0x12aefc0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x131eae0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f0d94b54509 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1296610, th=0x3206fb0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f0d94b564dc in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a8490, th=0x3206fb0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f0d94b5563a in ThreadWeaver::ThreadRunHelper::run (this=0x7f0d6a513e30, parent=0x1296610, th=0x3206fb0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f0d94b556bc in ThreadWeaver::Thread::run (this=0x3206fb0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f0da16eaae3 in QThreadPrivate::start (arg=0x3206fb0) at thread/qthread_unix.cpp:331
#8  0x00007f0da145fa35 in start_thread (arg=0x7f0d6a514700) at pthread_create.c:301
#9  0x00007f0da027743d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7f0d68f76700 (LWP 5809)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f0da16eb16a in wait (time=18446744073709551615, this=0x12aefc0) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x131eae0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007f0d94b54509 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1296610, th=0x3b087d0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f0d94b564dc in ThreadWeaver::WorkingHardState::applyForWork (this=0x12a8490, th=0x3b087d0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f0d94b5563a in ThreadWeaver::ThreadRunHelper::run (this=0x7f0d68f75e30, parent=0x1296610, th=0x3b087d0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/Thread.cpp:87
#6  0x00007f0d94b556bc in ThreadWeaver::Thread::run (this=0x3b087d0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/threadweaver/Weaver/Thread.cpp:142
#7  0x00007f0da16eaae3 in QThreadPrivate::start (arg=0x3b087d0) at thread/qthread_unix.cpp:331
#8  0x00007f0da145fa35 in start_thread (arg=0x7f0d68f76700) at pthread_create.c:301
#9  0x00007f0da027743d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f0da2b3b760 (LWP 15308)):
[KCrash Handler]
#6  QModelIndex (other=..., this=<optimized out>) at /usr/include/qt4/QtCore/qabstractitemmodel.h:65
#7  KDescendantsProxyModel::mapFromSource (this=0x1338300, sourceIndex=...) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/kdeui/itemviews/kdescendantsproxymodel.cpp:462
#8  0x00007f0da250ba33 in KDescendantsProxyModelPrivate::sourceRowsAboutToBeRemoved (this=0x12b0360, parent=..., start=5, end=5) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/kdeui/itemviews/kdescendantsproxymodel.cpp:697
#9  0x00007f0da250f655 in KDescendantsProxyModel::qt_metacall (this=0x1338300, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff9bfdd020) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95_build/kdeui/moc_kdescendantsproxymodel.cpp:97
#10 0x00007f0da17d23e0 in QMetaObject::activate (sender=0x12b0f60, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff9bfdd020) at kernel/qobject.cpp:3278
#11 0x00007f0da1813080 in QAbstractItemModel::rowsAboutToBeRemoved (this=<optimized out>, _t1=<optimized out>, _t2=5, _t3=5) at .moc/release-shared/moc_qabstractitemmodel.cpp:188
#12 0x00007f0da17b7daf in QAbstractItemModel::beginRemoveRows (this=<optimized out>, parent=<optimized out>, first=<optimized out>, last=<optimized out>) at kernel/qabstractitemmodel.cpp:2449
#13 0x00007f0d7f559ade in Akonadi::EntityTreeModelPrivate::monitoredItemRemoved (this=0x12c6b70, item=...) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95/akonadi/entitytreemodel_p.cpp:1052
#14 0x00007f0d7f54a372 in Akonadi::EntityTreeModel::qt_metacall (this=0x12b0f60, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff9bfdd2b0) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95_build/akonadi/entitytreemodel.moc:168
#15 0x00007f0da17d23e0 in QMetaObject::activate (sender=0x12c6860, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff9bfdd2b0) at kernel/qobject.cpp:3278
#16 0x00007f0d7f590865 in Akonadi::Monitor::itemRemoved (this=<optimized out>, _t1=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95_build/akonadi/monitor.moc:196
#17 0x00007f0d7f59371e in Akonadi::MonitorPrivate::emitItemNotification (this=0x12c9660, msg=..., item=<optimized out>, collection=<optimized out>, collectionDest=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95/akonadi/monitor_p.cpp:535
#18 0x00007f0d7f595774 in Akonadi::MonitorPrivate::emitNotification (this=0x12c9660, msg=...) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95/akonadi/monitor_p.cpp:288
#19 0x00007f0d7f502c0d in Akonadi::ChangeRecorderPrivate::emitNotification (this=0x12c9660, msg=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95/akonadi/changerecorder_p.h:60
#20 0x00007f0d7f59434b in Akonadi::MonitorPrivate::flushPipeline (this=0x12c9660) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95/akonadi/monitor_p.cpp:429
#21 0x00007f0d7f5943e1 in Akonadi::MonitorPrivate::dataAvailable (this=0x12c9660) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95/akonadi/monitor_p.cpp:438
#22 0x00007f0d7f590e86 in Akonadi::Monitor::qt_metacall (this=0x12c6860, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff9bfdd840) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95_build/akonadi/monitor.moc:160
#23 0x00007f0d7f50140a in Akonadi::ChangeRecorder::qt_metacall (this=0x12c6860, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95_build/akonadi/changerecorder.moc:72
#24 0x00007f0da17d23e0 in QMetaObject::activate (sender=0x12afed0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3278
#25 0x00007f0d7f50767e in Akonadi::EntityCache<Akonadi::Collection, Akonadi::CollectionFetchJob, Akonadi::CollectionFetchScope>::processResult (this=0x12afed0, job=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95/akonadi/entitycache_p.h:192
#26 0x00007f0d7f542e7a in Akonadi::EntityCacheBase::qt_metacall (this=0x12afed0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff9bfdda30) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95_build/akonadi/entitycache_p.moc:77
#27 0x00007f0da17d23e0 in QMetaObject::activate (sender=0x40522c0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff9bfdda30) at kernel/qobject.cpp:3278
#28 0x00007f0da1c2ae00 in KJob::result (this=<optimized out>, _t1=0x40522c0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95_build/kdecore/kjob.moc:194
#29 0x00007f0da1c2ae36 in KJob::emitResult (this=0x40522c0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/kdecore/jobs/kjob.cpp:318
#30 0x00007f0d7f58d0cb in Akonadi::JobPrivate::handleResponse (this=<optimized out>, tag=<optimized out>, data=<optimized out>) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95/akonadi/job.cpp:66
#31 0x00007f0d7f5bd72f in Akonadi::SessionPrivate::dataReceived (this=0x12b0870) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95/akonadi/session.cpp:218
#32 0x00007f0d7f5c0374 in Akonadi::Session::qt_metacall (this=0x12b0330, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff9bfddd60) at /var/tmp/portage/kde-base/kdepimlibs-4.7.95/work/kdepimlibs-4.7.95_build/akonadi/session.moc:96
#33 0x00007f0da17d23e0 in QMetaObject::activate (sender=0x13357f0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3278
#34 0x00007f0da18126aa in QIODevice::qt_metacall (this=0x13357f0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff9bfdde80) at .moc/release-shared/moc_qiodevice.cpp:77
#35 0x00007f0d9f6407e7 in QLocalSocket::qt_metacall (this=0x13357f0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff9bfdde80) at .moc/release-shared/moc_qlocalsocket.cpp:81
#36 0x00007f0da17d23e0 in QMetaObject::activate (sender=0x12c9600, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3278
#37 0x00007f0d9f63bd98 in QAbstractSocketPrivate::canReadNotification (this=0x12c9970) at socket/qabstractsocket.cpp:643
#38 0x00007f0d9f62c36d in QReadNotifier::event (this=<optimized out>, e=<optimized out>) at socket/qnativesocketengine.cpp:1103
#39 0x00007f0da09ef1f8 in QApplicationPrivate::notify_helper (this=0x72d850, receiver=0x20db6c0, e=0x7fff9bfde420) at kernel/qapplication.cpp:4481
#40 0x00007f0da09f38b0 in QApplication::notify (this=<optimized out>, receiver=0x20db6c0, e=0x7fff9bfde420) at kernel/qapplication.cpp:4360
#41 0x00007f0da2544590 in KApplication::notify (this=0x6fc4b0, receiver=0x20db6c0, event=0x7fff9bfde420) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/kdeui/kernel/kapplication.cpp:311
#42 0x00007f0da17bfce0 in QCoreApplication::notifyInternal (this=0x6fc4b0, receiver=0x20db6c0, event=0x7fff9bfde420) at kernel/qcoreapplication.cpp:787
#43 0x00007f0da17e65e5 in sendEvent (event=0x7fff9bfde420, receiver=<optimized out>) at kernel/qcoreapplication.h:215
#44 socketNotifierSourceDispatch (source=0x73b1d0) at kernel/qeventdispatcher_glib.cpp:110
#45 0x00007f0d9d2ae047 in g_main_dispatch (context=0x73b060) at gmain.c:2425
#46 g_main_context_dispatch (context=0x73b060) at gmain.c:2995
#47 0x00007f0d9d2ae78c in g_main_context_iterate (context=0x73b060, block=1, dispatch=1, self=<optimized out>) at gmain.c:3073
#48 0x00007f0d9d2ae947 in g_main_context_iteration (context=0x73b060, may_block=1) at gmain.c:3136
#49 0x00007f0da17e6b3c in QEventDispatcherGlib::processEvents (this=0x72c810, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#50 0x00007f0da0a864c6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#51 0x00007f0da17bf268 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#52 0x00007f0da17bf45f in QEventLoop::exec (this=0x7fff9bfde660, flags=...) at kernel/qeventloop.cpp:201
#53 0x00007f0da17c2b59 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#54 0x00007f0d8fbd1a4d in kdemain (argc=1, argv=0x612ef0) at /var/tmp/portage/kde-base/plasma-workspace-4.7.95/work/plasma-workspace-4.7.95/plasma/desktop/shell/main.cpp:120
#55 0x0000000000406eb3 in launch (argc=1, _name=0x6c1278 "/usr/bin/plasma-desktop", args=<optimized out>, cwd=0x0, envc=<optimized out>, envs=<optimized out>, reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x40adce "0") at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/kinit/kinit.cpp:734
#56 0x0000000000407ab3 in handle_launcher_request (sock=7, who=<optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/kinit/kinit.cpp:1226
#57 0x0000000000408247 in handle_requests (waitForPid=<optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/kinit/kinit.cpp:1419
#58 0x0000000000408dcb in main (argc=2, argv=0x7fff9bfdf8b8, envp=0x7fff9bfdf8d0) at /var/tmp/portage/kde-base/kdelibs-4.7.95/work/kdelibs-4.7.95/kinit/kinit.cpp:1907

Reported using DrKonqi