Bug 359490

Application: plasmashell (5.4.3)

Qt Version: 5.5.1
Operating System: Linux 4.5.0-040500rc4-generic x86_64
Distribution: Ubuntu Xenial Xerus (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
Accidentally touched icons in "Only icons taskbar", moved to another monitor.
- Unusual behavior I noticed:
Application Crash and 1 screen dark.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7efd215d2900 (LWP 1488))]

Thread 8 (Thread 0x7efd06004700 (LWP 1525)):
#0  0x00007efd18ad7360 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007efd18ad986b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efd18ada26b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efd18ada44c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007efd1c6632cb in QEventDispatcherGlib::processEvents (this=0x7efd000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007efd1c60a2ea in QEventLoop::exec (this=this@entry=0x7efd06003ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007efd1c4268d4 in QThread::exec (this=this@entry=0x24c28a0) at thread/qthread.cpp:503
#7  0x00007efd1ec97c85 in QQmlThreadPrivate::run (this=0x24c28a0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007efd1c42b88e in QThreadPrivate::start (arg=0x24c28a0) at thread/qthread_unix.cpp:331
#9  0x00007efd1b51766a in start_thread (arg=0x7efd06004700) at pthread_create.c:333
#10 0x00007efd1bd40e4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7efcfb0e7700 (LWP 1531)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007efcff570ad3 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007efcff5701c8 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007efd1b51766a in start_thread (arg=0x7efcfb0e7700) at pthread_create.c:333
#4  0x00007efd1bd40e4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7efcf6806700 (LWP 1532)):
#0  0x00007efd1bd3583d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007efd18ada33c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efd18ada44c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efd1c6632cb in QEventDispatcherGlib::processEvents (this=0x7efcf00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007efd1c60a2ea in QEventLoop::exec (this=this@entry=0x7efcf6805ca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007efd1c4268d4 in QThread::exec (this=this@entry=0x27d00e0) at thread/qthread.cpp:503
#6  0x00007efd1ec97c85 in QQmlThreadPrivate::run (this=0x27d00e0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007efd1c42b88e in QThreadPrivate::start (arg=0x27d00e0) at thread/qthread_unix.cpp:331
#8  0x00007efd1b51766a in start_thread (arg=0x7efcf6806700) at pthread_create.c:333
#9  0x00007efd1bd40e4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7efceffff700 (LWP 1551)):
#0  QTimerInfoList::timerWait (this=0x7efce8002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:380
#1  0x00007efd1c6626ae in timerSourcePrepareHelper (timeout=0x7efcefffeae4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#2  timerSourcePrepare (source=<optimized out>, timeout=0x7efcefffeae4) at kernel/qeventdispatcher_glib.cpp:160
#3  0x00007efd18ad98cd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007efd18ada26b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007efd18ada44c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007efd1c6632cb in QEventDispatcherGlib::processEvents (this=0x7efce80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#7  0x00007efd1c60a2ea in QEventLoop::exec (this=this@entry=0x7efcefffeca0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007efd1c4268d4 in QThread::exec (this=this@entry=0x2880a30) at thread/qthread.cpp:503
#9  0x00007efd1ec97c85 in QQmlThreadPrivate::run (this=0x2880a30) at qml/ftw/qqmlthread.cpp:141
#10 0x00007efd1c42b88e in QThreadPrivate::start (arg=0x2880a30) at thread/qthread_unix.cpp:331
#11 0x00007efd1b51766a in start_thread (arg=0x7efceffff700) at pthread_create.c:333
#12 0x00007efd1bd40e4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7efceedf6700 (LWP 1658)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007efd21025bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007efd21025c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007efd1b51766a in start_thread (arg=0x7efceedf6700) at pthread_create.c:333
#4  0x00007efd1bd40e4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7efc67729700 (LWP 1681)):
#0  0x00007efd18ad9d7c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007efd18ada2e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efd18ada44c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efd1c6632cb in QEventDispatcherGlib::processEvents (this=0x7efc600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007efd1c60a2ea in QEventLoop::exec (this=this@entry=0x7efc67728c50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007efd1c4268d4 in QThread::exec (this=this@entry=0x2ce8c80) at thread/qthread.cpp:503
#6  0x00007efd1f616e46 in QQuickPixmapReader::run (this=0x2ce8c80) at util/qquickpixmapcache.cpp:817
#7  0x00007efd1c42b88e in QThreadPrivate::start (arg=0x2ce8c80) at thread/qthread_unix.cpp:331
#8  0x00007efd1b51766a in start_thread (arg=0x7efc67729700) at pthread_create.c:333
#9  0x00007efd1bd40e4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7efc5603d700 (LWP 1691)):
#0  0x00007efd1bd3583d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007efd18ada33c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efd18ada44c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efd1c6632cb in QEventDispatcherGlib::processEvents (this=0x7efc500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007efd1c60a2ea in QEventLoop::exec (this=this@entry=0x7efc5603cc80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007efd1c4268d4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007efc580a08f7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007efd1c42b88e in QThreadPrivate::start (arg=0x464c980) at thread/qthread_unix.cpp:331
#8  0x00007efd1b51766a in start_thread (arg=0x7efc5603d700) at pthread_create.c:333
#9  0x00007efd1bd40e4d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7efd215d2900 (LWP 1488)):
[KCrash Handler]
#6  TaskManager::ManualSortingStrategy::manualSortingRequest (this=0x3feb120, item=0x0, newIndex=-1) at ../../libtaskmanager/strategies/manualsortingstrategy.cpp:53
#7  0x00007efc5fbe1c41 in Backend::qt_static_metacall (_o=_o@entry=0x3fb1370, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=12, _a=_a@entry=0x7ffe0d1e8ef0) at moc_backend.cpp:222
#8  0x00007efc5fbe21a5 in Backend::qt_metacall (this=0x3fb1370, _c=QMetaObject::InvokeMetaMethod, _id=12, _a=0x7ffe0d1e8ef0) at moc_backend.cpp:290
#9  0x00007efd1ec55cb9 in QQmlObjectOrGadget::metacall (this=this@entry=0x7ffe0d1e92a0, type=type@entry=QMetaObject::InvokeMetaMethod, index=index@entry=17, argv=<optimized out>) at qml/qqmlpropertycache.cpp:1689
#10 0x00007efd1ebdaf1c in CallMethod (object=..., index=<optimized out>, returnType=returnType@entry=43, argCount=<optimized out>, argTypes=<optimized out>, engine=engine@entry=0x28939c0, callArgs=0x7efcef000120) at jsruntime/qv4qobjectwrapper.cpp:1156
#11 0x00007efd1ebdc76c in CallPrecise (object=..., data=..., engine=engine@entry=0x28939c0, callArgs=callArgs@entry=0x7efcef000120) at jsruntime/qv4qobjectwrapper.cpp:1405
#12 0x00007efd1ebdcf7d in QV4::QObjectMethod::callInternal (this=<optimized out>, callData=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:1894
#13 0x00007efd1ebe1b98 in QV4::Object::call (d=<optimized out>, this=0x7efcef000118) at ../../include/QtQml/5.5.1/QtQml/private/../../../../../src/qml/jsruntime/qv4object_p.h:305
#14 QV4::QObjectSlotDispatcher::impl (which=<optimized out>, this_=<optimized out>, r=<optimized out>, metaArgs=0x7ffe0d1e97f0, ret=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:825
#15 0x00007efd1c63b527 in QtPrivate::QSlotObjectBase::call (a=0x7ffe0d1e97f0, r=0x4006e60, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#16 QMetaObject::activate (sender=0x4006e60, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=argv@entry=0x7ffe0d1e97f0) at kernel/qobject.cpp:3698
#17 0x00007efd1ebfabf5 in QQmlVMEMetaObject::activate (this=this@entry=0x3fb2eb0, object=<optimized out>, index=index@entry=55, args=args@entry=0x7ffe0d1e97f0) at qml/qqmlvmemetaobject.cpp:1325
#18 0x00007efd1ebfd261 in QQmlVMEMetaObject::metaCall (this=0x3fb2eb0, c=QMetaObject::InvokeMetaMethod, _id=55, a=0x7ffe0d1e97f0) at qml/qqmlvmemetaobject.cpp:914
#19 0x00007efd1ec55cb9 in QQmlObjectOrGadget::metacall (this=this@entry=0x7ffe0d1e9ba0, type=type@entry=QMetaObject::InvokeMetaMethod, index=index@entry=55, argv=<optimized out>) at qml/qqmlpropertycache.cpp:1689
#20 0x00007efd1ebdaf1c in CallMethod (object=..., index=<optimized out>, returnType=returnType@entry=43, argCount=<optimized out>, argTypes=<optimized out>, engine=engine@entry=0x28939c0, callArgs=0x7efcef0000b0) at jsruntime/qv4qobjectwrapper.cpp:1156
#21 0x00007efd1ebdc76c in CallPrecise (object=..., data=..., engine=engine@entry=0x28939c0, callArgs=callArgs@entry=0x7efcef0000b0) at jsruntime/qv4qobjectwrapper.cpp:1405
#22 0x00007efd1ebdcf7d in QV4::QObjectMethod::callInternal (this=<optimized out>, callData=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:1894
#23 0x00007efd1ebf33e1 in QV4::Object::call (d=0x7efcef0000b0, this=<optimized out>) at jsruntime/qv4object_p.h:305
#24 QV4::Runtime::callActivationProperty (engine=0x28939c0, nameIndex=<optimized out>, callData=0x7efcef0000b0) at jsruntime/qv4runtime.cpp:954
#25 0x00007efc640b78fb in ?? ()
#26 0x0000000000000018 in ?? ()
#27 0x0003000000000001 in ?? ()
#28 0x0003000000000001 in ?? ()
#29 0x2d3a1ca9ce1bed00 in ?? ()
#30 0x0000000003ff3f01 in ?? ()
#31 0x00000000028939c0 in ?? ()
#32 0x00007efcef0000d0 in ?? ()
#33 0x00007efcef000058 in ?? ()
#34 0x00007efcef000060 in ?? ()
#35 0x00000000039f5fd0 in ?? ()
#36 0x00000000028939c0 in ?? ()
#37 0x00007efd1eb93fba in QV4::SimpleScriptFunction::call (that=<optimized out>, callData=<optimized out>) at jsruntime/qv4functionobject.cpp:565
#38 0x00007efd1ec7d07f in QV4::Object::call (d=0x7efcef000008, this=<optimized out>) at ../../include/QtQml/5.5.1/QtQml/private/../../../../../src/qml/jsruntime/qv4object_p.h:305
#39 QQmlJavaScriptExpression::evaluate (this=this@entry=0x3f76ae0, context=<optimized out>, function=..., callData=callData@entry=0x7efcef000008, isUndefined=isUndefined@entry=0x0) at qml/qqmljavascriptexpression.cpp:158
#40 0x00007efd1ec23596 in QQmlBoundSignalExpression::evaluate (this=<optimized out>, a=a@entry=0x7ffe0d1ebbd0) at qml/qqmlboundsignal.cpp:281
#41 0x00007efd1ec23e4b in QQmlBoundSignal_callback (e=0x3f76658, a=0x7ffe0d1ebbd0) at qml/qqmlboundsignal.cpp:408
#42 0x00007efd1ec6052e in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x7ffe0d1ebbd0) at qml/qqmlnotifier.cpp:94
#43 0x00007efd1ec030fc in QQmlData::signalEmitted (object=0x3fb01b0, index=31, a=0x7ffe0d1ebbd0) at qml/qqmlengine.cpp:768
#44 0x00007efd1c63afa0 in QMetaObject::activate (sender=0x3fb01b0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffe0d1ebbd0) at kernel/qobject.cpp:3599
#45 0x00007efcec43bbd2 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/draganddrop/libdraganddropplugin.so
#46 0x00007efcec43a13c in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/draganddrop/libdraganddropplugin.so
#47 0x00007efd1f6a8638 in QQuickItem::event (this=0x3fb01b0, ev=0x7ffe0d1ec0d0) at items/qquickitem.cpp:7310
#48 0x00007efd1d10fffc in QApplicationPrivate::notify_helper (this=this@entry=0x23be410, receiver=receiver@entry=0x3fb01b0, e=e@entry=0x7ffe0d1ec0d0) at kernel/qapplication.cpp:3716
#49 0x00007efd1d1154c6 in QApplication::notify (this=0x7ffe0d1ed750, receiver=0x3fb01b0, e=0x7ffe0d1ec0d0) at kernel/qapplication.cpp:3499
#50 0x00007efd1c60cb5b in QCoreApplication::notifyInternal (this=0x7ffe0d1ed750, receiver=receiver@entry=0x3fb01b0, event=event@entry=0x7ffe0d1ec0d0) at kernel/qcoreapplication.cpp:965
#51 0x00007efd1f6b776c in QCoreApplication::sendEvent (event=0x7ffe0d1ec0d0, receiver=0x3fb01b0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qcoreapplication.h:224
#52 QQuickWindow::sendEvent (this=this@entry=0x3f24040, item=item@entry=0x3fb01b0, e=e@entry=0x7ffe0d1ec0d0) at items/qquickwindow.cpp:2635
#53 0x00007efd1f6be85f in QQuickWindowPrivate::deliverDragEvent (this=this@entry=0x3f24140, grabber=grabber@entry=0x3f24000, item=<optimized out>, event=event@entry=0x7ffe0d1ec590) at items/qquickwindow.cpp:2310
#54 0x00007efd1f6be985 in QQuickWindowPrivate::deliverDragEvent (this=this@entry=0x3f24140, grabber=0x3f24000, event=event@entry=0x7ffe0d1ec590) at items/qquickwindow.cpp:2233
#55 0x00007efd1f6bf293 in QQuickWindow::event (this=this@entry=0x3f24040, e=e@entry=0x7ffe0d1ec590) at items/qquickwindow.cpp:1376
#56 0x000000000044565b in PanelView::event (this=0x3f24040, e=0x7ffe0d1ec590) at ../../shell/panelview.cpp:834
#57 0x00007efd1d10fffc in QApplicationPrivate::notify_helper (this=this@entry=0x23be410, receiver=receiver@entry=0x3f24040, e=e@entry=0x7ffe0d1ec590) at kernel/qapplication.cpp:3716
#58 0x00007efd1d1154c6 in QApplication::notify (this=0x7ffe0d1ed750, receiver=0x3f24040, e=0x7ffe0d1ec590) at kernel/qapplication.cpp:3499
#59 0x00007efd1c60cb5b in QCoreApplication::notifyInternal (this=0x7ffe0d1ed750, receiver=receiver@entry=0x3f24040, event=event@entry=0x7ffe0d1ec590) at kernel/qcoreapplication.cpp:965
#60 0x00007efd1c9505b1 in QCoreApplication::sendEvent (event=0x7ffe0d1ec590, receiver=0x3f24040) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#61 QGuiApplicationPrivate::processDrag (w=w@entry=0x3f24040, dropData=dropData@entry=0x6b23f70, p=..., supportedActions=...) at kernel/qguiapplication.cpp:2697
#62 0x00007efd1c934edd in QWindowSystemInterface::handleDrag (w=w@entry=0x3f24040, dropData=dropData@entry=0x6b23f70, p=..., supportedActions=...) at kernel/qwindowsysteminterface.cpp:645
#63 0x00007efd0e96b93f in QXcbDrag::handle_xdnd_position (this=this@entry=0x240ec60, w=0x3f24040, e=e@entry=0x7ffe0d1ec7a0) at qxcbdrag.cpp:745
#64 0x00007efd0e96e10c in QXcbDrag::move (this=0x240ec60, me=<optimized out>) at qxcbdrag.cpp:476
#65 0x00007efd1c943339 in QBasicDrag::eventFilter (this=0x240ec60, o=<optimized out>, e=<optimized out>) at kernel/qsimpledrag.cpp:142
#66 0x00007efd1c60c812 in QCoreApplicationPrivate::sendThroughApplicationEventFilters (this=this@entry=0x23be410, receiver=receiver@entry=0x6677b20, event=event@entry=0x7ffe0d1ecb80) at kernel/qcoreapplication.cpp:1053
#67 0x00007efd1d10ff88 in QApplicationPrivate::notify_helper (this=this@entry=0x23be410, receiver=receiver@entry=0x6677b20, e=e@entry=0x7ffe0d1ecb80) at kernel/qapplication.cpp:3691
#68 0x00007efd1d1154c6 in QApplication::notify (this=0x7ffe0d1ed750, receiver=0x6677b20, e=0x7ffe0d1ecb80) at kernel/qapplication.cpp:3499
#69 0x00007efd1c60cb5b in QCoreApplication::notifyInternal (this=0x7ffe0d1ed750, receiver=receiver@entry=0x6677b20, event=event@entry=0x7ffe0d1ecb80) at kernel/qcoreapplication.cpp:965
#70 0x00007efd1c94f241 in QCoreApplication::sendSpontaneousEvent (event=0x7ffe0d1ecb80, receiver=0x6677b20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#71 QGuiApplicationPrivate::processMouseEvent (e=0x57d7990) at kernel/qguiapplication.cpp:1792
#72 0x00007efd1c950f05 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x57d7990) at kernel/qguiapplication.cpp:1584
#73 0x00007efd1c934e68 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#74 0x00007efd0e98ff70 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#75 0x00007efd18ada147 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#76 0x00007efd18ada3a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#77 0x00007efd18ada44c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007efd1c6632af in QEventDispatcherGlib::processEvents (this=0x2417b80, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#79 0x00007efd1c60a2ea in QEventLoop::exec (this=this@entry=0x6d85610, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#80 0x00007efd1c9436f2 in QBasicDrag::drag (this=0x240ec60, o=<optimized out>) at kernel/qsimpledrag.cpp:177
#81 0x00007efd1c95c289 in QDragManager::drag (this=0x38bab40, o=o@entry=0x562e2b0) at kernel/qdnd.cpp:135
#82 0x00007efd1c95b667 in QDrag::exec (this=this@entry=0x562e2b0, supportedActions=..., defaultDropAction=defaultDropAction@entry=Qt::IgnoreAction) at kernel/qdrag.cpp:274
#83 0x00007efd1c95b717 in QDrag::exec (this=this@entry=0x562e2b0, supportedActions=..., supportedActions@entry=...) at kernel/qdrag.cpp:230
#84 0x00007efc5fbde3b7 in DragHelper::startDragInternal (this=0x3faad80, item=0x644d140, mimeType=..., mimeData=..., url=..., icon=...) at ../../../applets/taskmanager/plugin/draghelper.cpp:74
#85 0x00007efd1c63c561 in QObject::event (this=0x3faad80, e=<optimized out>) at kernel/qobject.cpp:1239
#86 0x00007efd1d10fffc in QApplicationPrivate::notify_helper (this=this@entry=0x23be410, receiver=receiver@entry=0x3faad80, e=e@entry=0x62017f0) at kernel/qapplication.cpp:3716
#87 0x00007efd1d1154c6 in QApplication::notify (this=0x7ffe0d1ed750, receiver=0x3faad80, e=0x62017f0) at kernel/qapplication.cpp:3499
#88 0x00007efd1c60cb5b in QCoreApplication::notifyInternal (this=0x7ffe0d1ed750, receiver=0x3faad80, event=event@entry=0x62017f0) at kernel/qcoreapplication.cpp:965
#89 0x00007efd1c60ef56 in QCoreApplication::sendEvent (event=0x62017f0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#90 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x23b4580) at kernel/qcoreapplication.cpp:1593
#91 0x00007efd1c60f438 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
#92 0x00007efd1c662ea3 in postEventSourceDispatch (s=0x2423810) at kernel/qeventdispatcher_glib.cpp:271
#93 0x00007efd18ada147 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#94 0x00007efd18ada3a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#95 0x00007efd18ada44c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#96 0x00007efd1c6632af in QEventDispatcherGlib::processEvents (this=0x2417b80, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#97 0x00007efd1c60a2ea in QEventLoop::exec (this=this@entry=0x7ffe0d1ed5d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#98 0x00007efd1c6123bc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#99 0x00007efd1c9468ec in QGuiApplication::exec () at kernel/qguiapplication.cpp:1530
#100 0x00007efd1d10c435 in QApplication::exec () at kernel/qapplication.cpp:2976
#101 0x0000000000432b43 in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:176

Reported using DrKonqi