When I tried to add notes by dragging, plasma crashed and I cannot work normally.

Reproducible: Sometimes

Steps to Reproduce:
1.Right-click on toolbar at the bottom
2.Select add widgets
3.drag the "notes" widget then it crashed. But this time it recover soon.
The third time I try, it didn't crash and I know double click can work well.



Application: Plasma 桌面外壳 (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0d1bf8c780 (LWP 4513))]

Thread 11 (Thread 0x7f0cfc839700 (LWP 4515)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0d1556ab3b in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f0d1556ab79 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f0d0fe00e0e in start_thread (arg=0x7f0cfc839700) at pthread_create.c:311
#4  0x00007f0d1b9aa0fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 10 (Thread 0x7f0c712de700 (LWP 4516)):
#0  0x00007f0d1b99e95d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f0d0f4ef194 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0d0f4ef29c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0d1851c7d6 in QEventDispatcherGlib::processEvents (this=0x7f0c6c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:427
#4  0x00007f0d184ee03f in QEventLoop::processEvents (this=this@entry=0x7f0c712dddb0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f0d184ee335 in QEventLoop::exec (this=this@entry=0x7f0c712dddb0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f0d183eac1f in QThread::exec (this=this@entry=0x19eda10) at thread/qthread.cpp:537
#7  0x00007f0d184cf7c3 in QInotifyFileSystemWatcherEngine::run (this=0x19eda10) at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00007f0d183ed2ef in QThreadPrivate::start (arg=0x19eda10) at thread/qthread_unix.cpp:349
#9  0x00007f0d0fe00e0e in start_thread (arg=0x7f0c712de700) at pthread_create.c:311
#10 0x00007f0d1b9aa0fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 9 (Thread 0x7f0c62a61700 (LWP 4851)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0d183ed7d6 in wait (time=18446744073709551615, this=0x1a894f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x1b214e8, mutex=0x1a422a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f0d147e283c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b214c0, th=0x3619070) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f0d147e52d3 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x3619070, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f0d147e52ec in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x3619070, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f0d147e52ec in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x3619070, previous=0x4442390) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#7  0x00007f0d147e3fef in ThreadWeaver::Thread::run (this=0x3619070) at ../../../threadweaver/Weaver/Thread.cpp:98
#8  0x00007f0d183ed2ef in QThreadPrivate::start (arg=0x3619070) at thread/qthread_unix.cpp:349
#9  0x00007f0d0fe00e0e in start_thread (arg=0x7f0c62a61700) at pthread_create.c:311
#10 0x00007f0d1b9aa0fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 8 (Thread 0x7f0c5b3a7700 (LWP 4852)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0d183ed7d6 in wait (time=18446744073709551615, this=0x1a894f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x1b214e8, mutex=0x1a422a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f0d147e283c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b214c0, th=0x2fe2750) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f0d147e52d3 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x2fe2750, previous=0x39de940) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f0d147e3fef in ThreadWeaver::Thread::run (this=0x2fe2750) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007f0d183ed2ef in QThreadPrivate::start (arg=0x2fe2750) at thread/qthread_unix.cpp:349
#7  0x00007f0d0fe00e0e in start_thread (arg=0x7f0c5b3a7700) at pthread_create.c:311
#8  0x00007f0d1b9aa0fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 7 (Thread 0x7f0c5aba6700 (LWP 4853)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0d183ed7d6 in wait (time=18446744073709551615, this=0x1a894f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x1b214e8, mutex=0x1a422a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f0d147e283c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b214c0, th=0x2fe3160) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f0d147e52d3 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x2fe3160, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f0d147e52ec in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x2fe3160, previous=0x167fe80) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f0d147e3fef in ThreadWeaver::Thread::run (this=0x2fe3160) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007f0d183ed2ef in QThreadPrivate::start (arg=0x2fe3160) at thread/qthread_unix.cpp:349
#8  0x00007f0d0fe00e0e in start_thread (arg=0x7f0c5aba6700) at pthread_create.c:311
#9  0x00007f0d1b9aa0fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 6 (Thread 0x7f0c5a3a5700 (LWP 4854)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0d183ed7d6 in wait (time=18446744073709551615, this=0x1a894f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x1b214e8, mutex=0x1a422a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f0d147e283c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b214c0, th=0x36185a0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f0d147e52d3 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x36185a0, previous=0x2fa5da0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f0d147e3fef in ThreadWeaver::Thread::run (this=0x36185a0) at ../../../threadweaver/Weaver/Thread.cpp:98
#6  0x00007f0d183ed2ef in QThreadPrivate::start (arg=0x36185a0) at thread/qthread_unix.cpp:349
#7  0x00007f0d0fe00e0e in start_thread (arg=0x7f0c5a3a5700) at pthread_create.c:311
#8  0x00007f0d1b9aa0fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 5 (Thread 0x7f0c59ba4700 (LWP 4855)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0d183ed7d6 in wait (time=18446744073709551615, this=0x1a894f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x1b214e8, mutex=0x1a422a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f0d147e283c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b214c0, th=0x36185e0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f0d147e52d3 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x36185e0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f0d147e52ec in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x36185e0, previous=0x2fc6e40) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f0d147e3fef in ThreadWeaver::Thread::run (this=0x36185e0) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007f0d183ed2ef in QThreadPrivate::start (arg=0x36185e0) at thread/qthread_unix.cpp:349
#8  0x00007f0d0fe00e0e in start_thread (arg=0x7f0c59ba4700) at pthread_create.c:311
#9  0x00007f0d1b9aa0fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7f0c63a64700 (LWP 5534)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0d183ed7d6 in wait (time=18446744073709551615, this=0x1a894f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x1b214e8, mutex=0x1a422a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f0d147e283c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b214c0, th=0x38fbc20) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f0d147e52d3 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x38fbc20, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f0d147e52ec in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x38fbc20, previous=0x445d310) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f0d147e3fef in ThreadWeaver::Thread::run (this=0x38fbc20) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007f0d183ed2ef in QThreadPrivate::start (arg=0x38fbc20) at thread/qthread_unix.cpp:349
#8  0x00007f0d0fe00e0e in start_thread (arg=0x7f0c63a64700) at pthread_create.c:311
#9  0x00007f0d1b9aa0fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7f0c5919c700 (LWP 5535)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0d183ed7d6 in wait (time=18446744073709551615, this=0x1a894f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x1b214e8, mutex=0x1a422a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f0d147e283c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b214c0, th=0x3753ef0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f0d147e52d3 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x3753ef0, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f0d147e52ec in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x3753ef0, previous=0x3897140) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f0d147e3fef in ThreadWeaver::Thread::run (this=0x3753ef0) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007f0d183ed2ef in QThreadPrivate::start (arg=0x3753ef0) at thread/qthread_unix.cpp:349
#8  0x00007f0d0fe00e0e in start_thread (arg=0x7f0c5919c700) at pthread_create.c:311
#9  0x00007f0d1b9aa0fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f0c5899b700 (LWP 5536)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f0d183ed7d6 in wait (time=18446744073709551615, this=0x1a894f0) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=this@entry=0x1b214e8, mutex=0x1a422a0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f0d147e283c in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1b214c0, th=0x2ff9800) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#4  0x00007f0d147e52d3 in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x2ff9800, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#5  0x00007f0d147e52ec in ThreadWeaver::WorkingHardState::applyForWork (this=0x1a2eb60, th=0x2ff9800, previous=0x126c830) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#6  0x00007f0d147e3fef in ThreadWeaver::Thread::run (this=0x2ff9800) at ../../../threadweaver/Weaver/Thread.cpp:98
#7  0x00007f0d183ed2ef in QThreadPrivate::start (arg=0x2ff9800) at thread/qthread_unix.cpp:349
#8  0x00007f0d0fe00e0e in start_thread (arg=0x7f0c5899b700) at pthread_create.c:311
#9  0x00007f0d1b9aa0fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f0d1bf8c780 (LWP 4513)):
[KCrash Handler]
#6  0x00007f0d18503587 in isSignalConnected (signal_index=31, this=0x0) at kernel/qobject_p.h:237
#7  QMetaObject::activate (sender=0x52b6ba0, m=<optimized out>, local_signal_index=6, argv=0x7fffc9079510) at kernel/qobject.cpp:3444
#8  0x00007f0c7b250731 in ?? () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#9  0x00007f0c7b252c72 in ?? () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#10 0x00007f0c7b252d21 in ?? () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#11 0x00007f0d17e58415 in QGraphicsScenePrivate::filterDescendantEvent (this=this@entry=0x10a4f50, item=item@entry=0x3d31e50, event=event@entry=0x7fffc9079a30) at graphicsview/qgraphicsscene.cpp:1159
#12 0x00007f0d17e5ca5e in QGraphicsScenePrivate::sendEvent (this=0x10a4f50, item=0x3d31e50, event=0x7fffc9079a30) at graphicsview/qgraphicsscene.cpp:1211
#13 0x00007f0d17e5cf5f in QGraphicsScenePrivate::sendMouseEvent (this=0x10a4f50, mouseEvent=0x7fffc9079a30) at graphicsview/qgraphicsscene.cpp:1295
#14 0x00007f0d17e65b26 in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fffc9079a30) at graphicsview/qgraphicsscene.cpp:4102
#15 0x00007f0d17e71a1c in QGraphicsScene::event (this=0x117e2d0, event=0x7fffc9079a30) at graphicsview/qgraphicsscene.cpp:3451
#16 0x00007f0d178906cc in QApplicationPrivate::notify_helper (this=this@entry=0x1057e50, receiver=receiver@entry=0x117e2d0, e=e@entry=0x7fffc9079a30) at kernel/qapplication.cpp:4567
#17 0x00007f0d17896d40 in QApplication::notify (this=this@entry=0x104cfb0, receiver=receiver@entry=0x117e2d0, e=e@entry=0x7fffc9079a30) at kernel/qapplication.cpp:4353
#18 0x00007f0d191e749a in KApplication::notify (this=0x104cfb0, receiver=0x117e2d0, event=0x7fffc9079a30) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x00007f0d184ef46d in QCoreApplication::notifyInternal (this=0x104cfb0, receiver=0x117e2d0, event=event@entry=0x7fffc9079a30) at kernel/qcoreapplication.cpp:953
#20 0x00007f0d1788f066 in sendSpontaneousEvent (event=event@entry=0x7fffc9079a30, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#21 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fffc9079a30) at kernel/qapplication.cpp:5565
#22 0x00007f0d17e86c6c in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x4452fd0, event=event@entry=0x7fffc907a080) at graphicsview/qgraphicsview.cpp:646
#23 0x00007f0d17e87b7a in QGraphicsView::mouseMoveEvent (this=0x2653710, event=0x7fffc907a080) at graphicsview/qgraphicsview.cpp:3276
#24 0x00007f0d178dfde5 in QWidget::event (this=this@entry=0x2653710, event=event@entry=0x7fffc907a080) at kernel/qwidget.cpp:8361
#25 0x00007f0d17c7ddde in QFrame::event (this=0x2653710, e=0x7fffc907a080) at widgets/qframe.cpp:557
#26 0x00007f0d17e891c9 in QGraphicsView::viewportEvent (this=0x2653710, event=0x7fffc907a080) at graphicsview/qgraphicsview.cpp:2866
#27 0x00007f0d184ef5d6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x1057e50, receiver=receiver@entry=0x448e4f0, event=event@entry=0x7fffc907a080) at kernel/qcoreapplication.cpp:1063
#28 0x00007f0d178906ac in QApplicationPrivate::notify_helper (this=this@entry=0x1057e50, receiver=receiver@entry=0x448e4f0, e=e@entry=0x7fffc907a080) at kernel/qapplication.cpp:4563
#29 0x00007f0d17896e7d in QApplication::notify (this=this@entry=0x104cfb0, receiver=receiver@entry=0x448e4f0, e=e@entry=0x7fffc907a080) at kernel/qapplication.cpp:4110
#30 0x00007f0d191e749a in KApplication::notify (this=0x104cfb0, receiver=0x448e4f0, event=0x7fffc907a080) at ../../kdeui/kernel/kapplication.cpp:311
#31 0x00007f0d184ef46d in QCoreApplication::notifyInternal (this=0x104cfb0, receiver=receiver@entry=0x448e4f0, event=event@entry=0x7fffc907a080) at kernel/qcoreapplication.cpp:953
#32 0x00007f0d17896633 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#33 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x448e4f0, event=event@entry=0x7fffc907a080, alienWidget=alienWidget@entry=0x448e4f0, nativeWidget=nativeWidget@entry=0x36d8770, buttonDown=buttonDown@entry=0x7f0d1836e2d8 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#34 0x00007f0d179082fb in QETWidget::translateMouseEvent (this=this@entry=0x36d8770, event=event@entry=0x7fffc907a3f0) at kernel/qapplication_x11.cpp:4540
#35 0x00007f0d17906d6c in QApplication::x11ProcessEvent (this=0x104cfb0, event=event@entry=0x7fffc907a3f0) at kernel/qapplication_x11.cpp:3663
#36 0x00007f0d1792e6b2 in x11EventSourceDispatch (s=0x1058a40, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#37 0x00007f0d0f4eeea6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f0d0f4ef1f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f0d0f4ef29c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f0d1851c7b5 in QEventDispatcherGlib::processEvents (this=0xfc6b00, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#41 0x00007f0d1792e766 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#42 0x00007f0d184ee03f in QEventLoop::processEvents (this=this@entry=0x7fffc907a7d0, flags=...) at kernel/qeventloop.cpp:149
#43 0x00007f0d184ee335 in QEventLoop::exec (this=this@entry=0x7fffc907a7d0, flags=...) at kernel/qeventloop.cpp:204
#44 0x00007f0d184f3b09 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#45 0x00007f0d1bca926c in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#46 0x00007f0d1b8e2995 in __libc_start_main (main=0x4006e0, argc=1, ubp_av=0x7fffc907aa28, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffc907aa18) at libc-start.c:276
#47 0x000000000040070e in _start ()