Bug 352941

Application: plasma-desktop (4.11.11)
KDE Platform Version: 4.14.2
Qt Version: 4.8.6
Operating System: Linux 3.16.0-38-generic x86_64
Distribution: Linux Mint 17.2 Rafaela

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

I used widget of the app then it crashed 

please how can I solve thes proplem.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4c672d2800 (LWP 2149))]

Thread 9 (Thread 0x7f4c3b8af700 (LWP 2150)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4c5ff88ffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f4c5ff89039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f4c5aaff182 in start_thread (arg=0x7f4c3b8af700) at pthread_create.c:312
#4  0x00007f4c66bca47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (Thread 0x7f4c390f7700 (LWP 2151)):
#0  0x00007f4c66bbb82d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4c557bcf45 in ?? () from /usr/lib/nvidia-346/tls/libnvidia-tls.so.346.72
#2  0x00007f4c5a42ec10 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4c5a3edb14 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4c5a3edf7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4c5a3ee0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f4c6379e7be in QEventDispatcherGlib::processEvents (this=0x7f4bac0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#7  0x00007f4c637700af in QEventLoop::processEvents (this=this@entry=0x7f4c390f6da0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007f4c637703a5 in QEventLoop::exec (this=this@entry=0x7f4c390f6da0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007f4c6366cc5f in QThread::exec (this=this@entry=0x1404220) at thread/qthread.cpp:537
#10 0x00007f4c63751823 in QInotifyFileSystemWatcherEngine::run (this=0x1404220) at io/qfilesystemwatcher_inotify.cpp:265
#11 0x00007f4c6366f32f in QThreadPrivate::start (arg=0x1404220) at thread/qthread_unix.cpp:349
#12 0x00007f4c5aaff182 in start_thread (arg=0x7f4c390f7700) at pthread_create.c:312
#13 0x00007f4c66bca47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7f4bb3055700 (LWP 2153)):
#0  0x00007f4c66bbb82d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4c557bcf45 in ?? () from /usr/lib/nvidia-346/tls/libnvidia-tls.so.346.72
#2  0x00007f4c5a42ec10 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4c5a3edb14 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4c5a3edf7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4c5a3ee30a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f4bb3b51336 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#7  0x00007f4c5a412f05 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f4c5aaff182 in start_thread (arg=0x7f4bb3055700) at pthread_create.c:312
#9  0x00007f4c66bca47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7f4bb2854700 (LWP 2154)):
#0  0x00007f4c5a42f610 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4c5a42f9a9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4c5a3ed680 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4c5a3edf03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4c5a3ee0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4c6379e7be in QEventDispatcherGlib::processEvents (this=0x7f4ba40008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f4c637700af in QEventLoop::processEvents (this=this@entry=0x7f4bb2853da0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f4c637703a5 in QEventLoop::exec (this=this@entry=0x7f4bb2853da0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f4c6366cc5f in QThread::exec (this=this@entry=0x8c9880) at thread/qthread.cpp:537
#9  0x00007f4c63751823 in QInotifyFileSystemWatcherEngine::run (this=0x8c9880) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007f4c6366f32f in QThreadPrivate::start (arg=0x8c9880) at thread/qthread_unix.cpp:349
#11 0x00007f4c5aaff182 in start_thread (arg=0x7f4bb2854700) at pthread_create.c:312
#12 0x00007f4c66bca47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7f4b9d569700 (LWP 2160)):
#0  0x00007f4c5a42f61d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4c5a42f9a9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4c5a3ed680 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4c5a3edf03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4c5a3ee0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4c6379e7be in QEventDispatcherGlib::processEvents (this=0x7f4b980008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f4c637700af in QEventLoop::processEvents (this=this@entry=0x7f4b9d568da0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f4c637703a5 in QEventLoop::exec (this=this@entry=0x7f4b9d568da0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f4c6366cc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#9  0x00007f4bb11ee027 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#10 0x00007f4c6366f32f in QThreadPrivate::start (arg=0x1b99e70) at thread/qthread_unix.cpp:349
#11 0x00007f4c5aaff182 in start_thread (arg=0x7f4b9d569700) at pthread_create.c:312
#12 0x00007f4c66bca47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f4c3fc3a700 (LWP 23149)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4c61b4b81d in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f4c61b4b859 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f4c5aaff182 in start_thread (arg=0x7f4c3fc3a700) at pthread_create.c:312
#4  0x00007f4c66bca47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f4bb3856700 (LWP 23150)):
#0  __GI___pthread_mutex_lock (mutex=0x7f4ba800b4c0) at ../nptl/pthread_mutex_lock.c:122
#1  0x00007f4c5a42f981 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4c5a3eda6c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4c5a3edf7b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4c5a3ee0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4c6379e7be in QEventDispatcherGlib::processEvents (this=0x7f4ba800df70, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#6  0x00007f4c637700af in QEventLoop::processEvents (this=this@entry=0x7f4bb3855de0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f4c637703a5 in QEventLoop::exec (this=this@entry=0x7f4bb3855de0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f4c6366cc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#9  0x00007f4c6366f32f in QThreadPrivate::start (arg=0x9df2700) at thread/qthread_unix.cpp:349
#10 0x00007f4c5aaff182 in start_thread (arg=0x7f4bb3856700) at pthread_create.c:312
#11 0x00007f4c66bca47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f4b3efce700 (LWP 23151)):
#0  __libc_disable_asynccancel () at ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:98
#1  0x00007f4c66bbd139 in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007f4c5a3edfe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4c5a3ee0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4c6379e7be in QEventDispatcherGlib::processEvents (this=0x7f4b380008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#5  0x00007f4c637700af in QEventLoop::processEvents (this=this@entry=0x7f4b3efcdde0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f4c637703a5 in QEventLoop::exec (this=this@entry=0x7f4b3efcdde0, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f4c6366cc5f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:537
#8  0x00007f4c6366f32f in QThreadPrivate::start (arg=0x83a2800) at thread/qthread_unix.cpp:349
#9  0x00007f4c5aaff182 in start_thread (arg=0x7f4b3efce700) at pthread_create.c:312
#10 0x00007f4c66bca47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f4c672d2800 (LWP 2149)):
[KCrash Handler]
#6  Plasma::Service::operationDescription (this=0x0, operationName=...) at ../../plasma/service.cpp:183
#7  0x00007f4b7fa95482 in RememberTheMilkPlasmoid::startAuth (this=0x89e4b80) at ../../../applets/rememberthemilk/rememberthemilk-plasmoid.cpp:113
#8  0x00007f4b7fa96605 in RememberTheMilkPlasmoid::qt_static_metacall (_o=0x89e4b80, _id=0, _a=0x7ffcab4a7390, _c=<optimized out>) at ./rememberthemilk-plasmoid.moc:86
#9  0x00007f4c6378587a in QMetaObject::activate (sender=sender@entry=0x378e8b0, m=m@entry=0x7f4c635de2a0 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffcab4a7520) at kernel/qobject.cpp:3539
#10 0x00007f4c63159172 in QAbstractButton::clicked (this=this@entry=0x378e8b0, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:219
#11 0x00007f4c62ebca63 in QAbstractButtonPrivate::emitClicked (this=this@entry=0x6216db0) at widgets/qabstractbutton.cpp:548
#12 0x00007f4c62ebdbd3 in QAbstractButtonPrivate::click (this=this@entry=0x6216db0) at widgets/qabstractbutton.cpp:541
#13 0x00007f4c62ebdcbc in QAbstractButton::mouseReleaseEvent (this=0x378e8b0, e=0x7ffcab4a7a10) at widgets/qabstractbutton.cpp:1123
#14 0x00007f4c62b5a51a in QWidget::event (this=0x378e8b0, event=0x7ffcab4a7a10) at kernel/qwidget.cpp:8376
#15 0x00007f4c62b0ae2c in QApplicationPrivate::notify_helper (this=this@entry=0x8ee000, receiver=receiver@entry=0x378e8b0, e=e@entry=0x7ffcab4a7a10) at kernel/qapplication.cpp:4567
#16 0x00007f4c62b115dd in QApplication::notify (this=this@entry=0x8eae50, receiver=receiver@entry=0x378e8b0, e=e@entry=0x7ffcab4a7a10) at kernel/qapplication.cpp:4110
#17 0x00007f4c64436cca in KApplication::notify (this=0x8eae50, receiver=0x378e8b0, event=0x7ffcab4a7a10) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f4c637714dd in QCoreApplication::notifyInternal (this=0x8eae50, receiver=receiver@entry=0x378e8b0, event=event@entry=0x7ffcab4a7a10) at kernel/qcoreapplication.cpp:953
#19 0x00007f4c62b10d93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#20 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x378e8b0, event=event@entry=0x7ffcab4a7a10, alienWidget=alienWidget@entry=0x378e8b0, nativeWidget=nativeWidget@entry=0xa230f20, buttonDown=buttonDown@entry=0x7f4c635f0318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#21 0x00007f4c62b859eb in QETWidget::translateMouseEvent (this=this@entry=0xa230f20, event=event@entry=0x7ffcab4a7d90) at kernel/qapplication_x11.cpp:4634
#22 0x00007f4c62b85289 in QApplication::x11ProcessEvent (this=0x8eae50, event=event@entry=0x7ffcab4a7d90) at kernel/qapplication_x11.cpp:3627
#23 0x00007f4c62bacb32 in x11EventSourceDispatch (s=0x8d9790, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#24 0x00007f4c5a3ede04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f4c5a3ee048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f4c5a3ee0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f4c6379e7a1 in QEventDispatcherGlib::processEvents (this=0x85e840, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#28 0x00007f4c62bacbe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007f4c6377501f in QCoreApplication::processEvents (flags=...) at kernel/qcoreapplication.cpp:1140
#30 0x00007f4b3f662aaf in RTM::Auth::getAuthUrl (this=this@entry=0x9f21e70) at ../../../libs/rtm/auth.cpp:81
#31 0x00007f4b3f6550be in RTM::Session::handleValidToken (this=0x31659c0, valid=<optimized out>) at ../../../libs/rtm/session.cpp:131
#32 0x00007f4b3f6581ce in RTM::Session::qt_static_metacall (_o=0x7ffcab4a73a0, _id=0, _a=0x7ffcab4a7390, _c=<optimized out>) at ./moc_session.cpp:113
#33 0x00007f4c6378587a in QMetaObject::activate (sender=sender@entry=0x31659c0, m=m@entry=0x7f4b3f86d9e0 <RTM::Session::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffcab4a83a0) at kernel/qobject.cpp:3539
#34 0x00007f4b3f6556a2 in RTM::Session::tokenCheck (this=this@entry=0x31659c0, _t1=_t1@entry=false) at ./moc_session.cpp:184
#35 0x00007f4b3f6556d6 in RTM::Session::checkToken (this=0x31659c0) at ../../../libs/rtm/session.cpp:152
#36 0x00007f4b3f656bae in RTM::Session::Session (this=0x31659c0, apiKey=..., sharedSecret=..., permissions=RTM::Delete, token=..., parent=<optimized out>) at ../../../libs/rtm/session.cpp:53
#37 0x00007f4b3f87696c in RtmEngine::RtmEngine (this=0x3cf59c0, parent=<optimized out>, args=...) at ../../../dataengines/rememberthemilk/rtmengine.cpp:51
#38 0x00007f4b3f8773d8 in KPluginFactory::createInstance<RtmEngine, QObject> (parentWidget=<optimized out>, parent=<optimized out>, args=...) at /usr/include/kpluginfactory.h:477
#39 0x00007f4c63f526c3 in KPluginFactory::create (this=0x10eca20, iface=0x7f4c66843b60 <qt_meta_stringdata_Plasma__DataEngine> "Plasma::DataEngine", parentWidget=0x0, parent=0x0, args=..., keyword=...) at ../../kdecore/util/kpluginfactory.cpp:203
#40 0x00007f4c66701009 in create<Plasma::DataEngine> (args=..., keyword=..., parent=0x0, parentWidget=0x0, this=0x10eca20) at ../../kdecore/util/kpluginfactory.h:531
#41 createInstance<Plasma::DataEngine> (error=0x7ffcab4a8620, args=..., parent=0x0, parentWidget=0x0, this=0x4726320) at ../../kdecore/services/kservice.h:573
#42 createInstance<Plasma::DataEngine> (error=0x7ffcab4a8620, args=..., parent=0x0, this=0x4726320) at ../../kdecore/services/kservice.h:550
#43 Plasma::PluginLoader::loadDataEngine (this=<optimized out>, name=...) at ../../plasma/pluginloader.cpp:184
#44 0x00007f4c666eaeb0 in Plasma::DataEngineManager::loadEngine (this=0xcc8220, name=...) at ../../plasma/dataenginemanager.cpp:132
#45 0x00007f4c6671c22b in Plasma::DataEngineConsumer::dataEngine (this=0x651bb80, name=...) at ../../plasma/private/dataengineconsumer.cpp:105
#46 0x00007f4c666b384c in Plasma::Applet::dataEngine (this=this@entry=0x89e4b80, name=...) at ../../plasma/applet.cpp:685
#47 0x00007f4b7fa94886 in RememberTheMilkPlasmoid::graphicsWidget (this=0x89e4b80) at ../../../applets/rememberthemilk/rememberthemilk-plasmoid.cpp:317
#48 0x00007f4b7fa951e4 in RememberTheMilkPlasmoid::init (this=0x89e4b80) at ../../../applets/rememberthemilk/rememberthemilk-plasmoid.cpp:88
#49 0x00007f4c666d1f88 in Plasma::Containment::addApplet (this=0xc08ce0, applet=applet@entry=0x89e4b80, pos=..., delayInit=delayInit@entry=false) at ../../plasma/containment.cpp:917
#50 0x00007f4c666d2d78 in Plasma::ContainmentPrivate::addApplet (this=0xc68860, name=..., args=..., appletGeometry=..., id=id@entry=0, delayInit=delayInit@entry=false) at ../../plasma/containment.cpp:2234
#51 0x00007f4c666d2fbf in Plasma::Containment::addApplet (this=<optimized out>, name=..., args=..., appletGeometry=...) at ../../plasma/containment.cpp:854
#52 0x00007f4c666d8614 in Plasma::ContainmentPrivate::dropData (this=0xc68860, scenePos=..., screenPos=..., dropEvent=dropEvent@entry=0x7ffcab4a8f90) at ../../plasma/containment.cpp:1272
#53 0x00007f4c666d9ea2 in Plasma::Containment::dropEvent (this=0xc08ce0, event=0x7ffcab4a8f90) at ../../plasma/containment.cpp:1233
#54 0x00007f4c630b47b8 in QGraphicsItem::sceneEvent (this=0xc08cf0, event=0x7ffcab4a8f90) at graphicsview/qgraphicsitem.cpp:6737
#55 0x00007f4c630db267 in QGraphicsScenePrivate::sendDragDropEvent (this=this@entry=0xa73ea0, item=0xc08cf0, dragDropEvent=0x7ffcab4a8f90) at graphicsview/qgraphicsscene.cpp:1250
#56 0x00007f4c630db2cf in QGraphicsScene::dropEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsscene.cpp:3756
#57 0x00007f4c630f02d0 in QGraphicsScene::event (this=0xaec220, event=0x7ffcab4a8f90) at graphicsview/qgraphicsscene.cpp:3409
#58 0x00007f4c62b0ae2c in QApplicationPrivate::notify_helper (this=this@entry=0x8ee000, receiver=receiver@entry=0xaec220, e=e@entry=0x7ffcab4a8f90) at kernel/qapplication.cpp:4567
#59 0x00007f4c62b114a0 in QApplication::notify (this=this@entry=0x8eae50, receiver=receiver@entry=0xaec220, e=e@entry=0x7ffcab4a8f90) at kernel/qapplication.cpp:4353
#60 0x00007f4c64436cca in KApplication::notify (this=0x8eae50, receiver=0xaec220, event=0x7ffcab4a8f90) at ../../kdeui/kernel/kapplication.cpp:311
#61 0x00007f4c637714dd in QCoreApplication::notifyInternal (this=0x8eae50, receiver=0xaec220, event=event@entry=0x7ffcab4a8f90) at kernel/qcoreapplication.cpp:953
#62 0x00007f4c63107e5b in sendEvent (event=0x7ffcab4a8f90, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#63 QGraphicsView::dropEvent (this=<optimized out>, event=0x7ffcab4a93d0) at graphicsview/qgraphicsview.cpp:2912
#64 0x00007f4c62b5a26a in QWidget::event (this=this@entry=0x20e03b0, event=event@entry=0x7ffcab4a93d0) at kernel/qwidget.cpp:8577
#65 0x00007f4c62efc04e in QFrame::event (this=0x20e03b0, e=0x7ffcab4a93d0) at widgets/qframe.cpp:557
#66 0x00007f4c63107859 in QGraphicsView::viewportEvent (this=0x20e03b0, event=0x7ffcab4a93d0) at graphicsview/qgraphicsview.cpp:2866
#67 0x00007f4c63771646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x8ee000, receiver=receiver@entry=0xd6cb30, event=event@entry=0x7ffcab4a93d0) at kernel/qcoreapplication.cpp:1063
#68 0x00007f4c62b0ae0c in QApplicationPrivate::notify_helper (this=this@entry=0x8ee000, receiver=receiver@entry=0xd6cb30, e=e@entry=0x7ffcab4a93d0) at kernel/qapplication.cpp:4563
#69 0x00007f4c62b12326 in QApplication::notify (this=this@entry=0x8eae50, receiver=receiver@entry=0xd6cb30, e=e@entry=0x7ffcab4a93d0) at kernel/qapplication.cpp:4353
#70 0x00007f4c64436cca in KApplication::notify (this=0x8eae50, receiver=0xd6cb30, event=0x7ffcab4a93d0) at ../../kdeui/kernel/kapplication.cpp:311
#71 0x00007f4c637714dd in QCoreApplication::notifyInternal (this=0x8eae50, receiver=0xd6cb30, event=event@entry=0x7ffcab4a93d0) at kernel/qcoreapplication.cpp:953
#72 0x00007f4c62b937b1 in sendEvent (event=0x7ffcab4a93d0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#73 QX11Data::xdndHandleDrop (this=<optimized out>, xe=xe@entry=0x7ffcab4a94f0, passive=passive@entry=false) at kernel/qdnd_x11.cpp:1185
#74 0x00007f4c62b93b45 in QDragManager::drop (this=this@entry=0x32e5820) at kernel/qdnd_x11.cpp:1765
#75 0x00007f4c62b94d90 in QDragManager::eventFilter (this=0x32e5820, o=<optimized out>, e=<optimized out>) at kernel/qdnd_x11.cpp:1314
#76 0x00007f4c637715b2 in QCoreApplicationPrivate::sendThroughApplicationEventFilters (this=this@entry=0x8ee000, receiver=receiver@entry=0x5822050, event=event@entry=0x7ffcab4a9980) at kernel/qcoreapplication.cpp:1044
#77 0x00007f4c62b0adb8 in QApplicationPrivate::notify_helper (this=this@entry=0x8ee000, receiver=receiver@entry=0x5822050, e=e@entry=0x7ffcab4a9980) at kernel/qapplication.cpp:4542
#78 0x00007f4c62b115dd in QApplication::notify (this=this@entry=0x8eae50, receiver=receiver@entry=0x5822050, e=e@entry=0x7ffcab4a9980) at kernel/qapplication.cpp:4110
#79 0x00007f4c64436cca in KApplication::notify (this=0x8eae50, receiver=0x5822050, event=0x7ffcab4a9980) at ../../kdeui/kernel/kapplication.cpp:311
#80 0x00007f4c637714dd in QCoreApplication::notifyInternal (this=0x8eae50, receiver=receiver@entry=0x5822050, event=event@entry=0x7ffcab4a9980) at kernel/qcoreapplication.cpp:953
#81 0x00007f4c62b10d93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#82 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x5822050, event=event@entry=0x7ffcab4a9980, alienWidget=alienWidget@entry=0x0, nativeWidget=nativeWidget@entry=0x5822050, buttonDown=buttonDown@entry=0x7f4c635f0318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#83 0x00007f4c62b859eb in QETWidget::translateMouseEvent (this=this@entry=0x5822050, event=event@entry=0x7ffcab4a9d00) at kernel/qapplication_x11.cpp:4634
#84 0x00007f4c62b85289 in QApplication::x11ProcessEvent (this=0x8eae50, event=event@entry=0x7ffcab4a9d00) at kernel/qapplication_x11.cpp:3627
#85 0x00007f4c62bacb32 in x11EventSourceDispatch (s=0x8d9790, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#86 0x00007f4c5a3ede04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#87 0x00007f4c5a3ee048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#88 0x00007f4c5a3ee0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#89 0x00007f4c6379e7a1 in QEventDispatcherGlib::processEvents (this=0x85e840, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#90 0x00007f4c62bacbe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#91 0x00007f4c637700af in QEventLoop::processEvents (this=this@entry=0x9bfc0d0, flags=...) at kernel/qeventloop.cpp:149
#92 0x00007f4c637703a5 in QEventLoop::exec (this=this@entry=0x9bfc0d0, flags=...) at kernel/qeventloop.cpp:204
#93 0x00007f4c62b950bd in QDragManager::drag (this=0x32e5820, o=o@entry=0x2719b60) at kernel/qdnd_x11.cpp:2032
#94 0x00007f4c62b1be3a in QDrag::exec (this=this@entry=0x2719b60, supportedActions=..., defaultDropAction=Qt::MoveAction) at kernel/qdrag.cpp:284
#95 0x00007f4c39779c68 in DeclarativeDragArea::mouseMoveEvent (this=0x625f0f0, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:233
#96 0x00007f4c39779d21 in DeclarativeDragArea::sceneEventFilter (this=0x625f0f0, item=0x56eebe0, event=0x7ffcab4aa720) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:245
#97 0x00007f4c630d6b25 in QGraphicsScenePrivate::filterDescendantEvent (this=this@entry=0xa73ea0, item=item@entry=0x56eebe0, event=event@entry=0x7ffcab4aa720) at graphicsview/qgraphicsscene.cpp:1159
#98 0x00007f4c630db14e in QGraphicsScenePrivate::sendEvent (this=0xa73ea0, item=0x56eebe0, event=0x7ffcab4aa720) at graphicsview/qgraphicsscene.cpp:1211
#99 0x00007f4c630db64f in QGraphicsScenePrivate::sendMouseEvent (this=0xa73ea0, mouseEvent=0x7ffcab4aa720) at graphicsview/qgraphicsscene.cpp:1295
#100 0x00007f4c630e4216 in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7ffcab4aa720) at graphicsview/qgraphicsscene.cpp:4102
#101 0x00007f4c630f00fc in QGraphicsScene::event (this=0xaec220, event=0x7ffcab4aa720) at graphicsview/qgraphicsscene.cpp:3451
#102 0x00007f4c62b0ae2c in QApplicationPrivate::notify_helper (this=this@entry=0x8ee000, receiver=receiver@entry=0xaec220, e=e@entry=0x7ffcab4aa720) at kernel/qapplication.cpp:4567
#103 0x00007f4c62b114a0 in QApplication::notify (this=this@entry=0x8eae50, receiver=receiver@entry=0xaec220, e=e@entry=0x7ffcab4aa720) at kernel/qapplication.cpp:4353
#104 0x00007f4c64436cca in KApplication::notify (this=0x8eae50, receiver=0xaec220, event=0x7ffcab4aa720) at ../../kdeui/kernel/kapplication.cpp:311
#105 0x00007f4c637714dd in QCoreApplication::notifyInternal (this=0x8eae50, receiver=0xaec220, event=event@entry=0x7ffcab4aa720) at kernel/qcoreapplication.cpp:953
#106 0x00007f4c62b09556 in sendSpontaneousEvent (event=event@entry=0x7ffcab4aa720, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#107 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7ffcab4aa720) at kernel/qapplication.cpp:5565
#108 0x00007f4c631052fc in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x57fa1b0, event=event@entry=0x7ffcab4aad70) at graphicsview/qgraphicsview.cpp:646
#109 0x00007f4c6310620a in QGraphicsView::mouseMoveEvent (this=0x4674110, event=0x7ffcab4aad70) at graphicsview/qgraphicsview.cpp:3276
#110 0x00007f4c62b5a645 in QWidget::event (this=this@entry=0x4674110, event=event@entry=0x7ffcab4aad70) at kernel/qwidget.cpp:8361
#111 0x00007f4c62efc04e in QFrame::event (this=0x4674110, e=0x7ffcab4aad70) at widgets/qframe.cpp:557
#112 0x00007f4c63107859 in QGraphicsView::viewportEvent (this=0x4674110, event=0x7ffcab4aad70) at graphicsview/qgraphicsview.cpp:2866
#113 0x00007f4c63771646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x8ee000, receiver=receiver@entry=0x3260830, event=event@entry=0x7ffcab4aad70) at kernel/qcoreapplication.cpp:1063
#114 0x00007f4c62b0ae0c in QApplicationPrivate::notify_helper (this=this@entry=0x8ee000, receiver=receiver@entry=0x3260830, e=e@entry=0x7ffcab4aad70) at kernel/qapplication.cpp:4563
#115 0x00007f4c62b115dd in QApplication::notify (this=this@entry=0x8eae50, receiver=receiver@entry=0x3260830, e=e@entry=0x7ffcab4aad70) at kernel/qapplication.cpp:4110
#116 0x00007f4c64436cca in KApplication::notify (this=0x8eae50, receiver=0x3260830, event=0x7ffcab4aad70) at ../../kdeui/kernel/kapplication.cpp:311
#117 0x00007f4c637714dd in QCoreApplication::notifyInternal (this=0x8eae50, receiver=receiver@entry=0x3260830, event=event@entry=0x7ffcab4aad70) at kernel/qcoreapplication.cpp:953
#118 0x00007f4c62b10d93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#119 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x3260830, event=event@entry=0x7ffcab4aad70, alienWidget=alienWidget@entry=0x3260830, nativeWidget=nativeWidget@entry=0x1121b50, buttonDown=buttonDown@entry=0x7f4c635f0318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#120 0x00007f4c62b859eb in QETWidget::translateMouseEvent (this=this@entry=0x1121b50, event=event@entry=0x7ffcab4ab0f0) at kernel/qapplication_x11.cpp:4634
#121 0x00007f4c62b85289 in QApplication::x11ProcessEvent (this=0x8eae50, event=event@entry=0x7ffcab4ab0f0) at kernel/qapplication_x11.cpp:3627
#122 0x00007f4c62bacb32 in x11EventSourceDispatch (s=0x8d9790, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#123 0x00007f4c5a3ede04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#124 0x00007f4c5a3ee048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#125 0x00007f4c5a3ee0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#126 0x00007f4c6379e7a1 in QEventDispatcherGlib::processEvents (this=0x85e840, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#127 0x00007f4c62bacbe6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#128 0x00007f4c637700af in QEventLoop::processEvents (this=this@entry=0x7ffcab4ab4c0, flags=...) at kernel/qeventloop.cpp:149
#129 0x00007f4c637703a5 in QEventLoop::exec (this=this@entry=0x7ffcab4ab4c0, flags=...) at kernel/qeventloop.cpp:204
#130 0x00007f4c63775b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#131 0x00007f4c62b0937c in QApplication::exec () at kernel/qapplication.cpp:3828
#132 0x00007f4c66ed167c in kdemain (argc=1, argv=0x7ffcab4ab718) at ../../../../plasma/desktop/shell/main.cpp:126
#133 0x00007f4c66af1ec5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, argv=0x7ffcab4ab718, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcab4ab708) at libc-start.c:287
#134 0x000000000040070e in _start ()

Reported using DrKonqi