Bug 320686

Summary:	Crash when attempting to drag widget (pager) onto panel next to show desktop widget.
Product:	[Unmaintained] plasma4	Reporter:	Oskar Gibson <oskargibson>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	annma, apcomptec
Priority:	NOR
Version:	4.10.3
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi

Description Oskar Gibson 2013-06-04 00:24:14 UTC

Application: plasma-desktop (4.10.3)
KDE Platform Version: 4.10.3
Qt Version: 4.8.4
Operating System: Linux 3.8.0-24-generic x86_64
Distribution: Ubuntu 13.04

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

Crash when attempting to drag widget (pager) onto panel next to show desktop widget.

-- 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 0x7f1e7dbda7c0 (LWP 8875))]

Thread 5 (Thread 0x7f1e6051f700 (LWP 8877)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1e76914e77 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f1e76914ea9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f1e7100ff8e in start_thread (arg=0x7f1e6051f700) at pthread_create.c:311
#4  0x00007f1e7d4d1e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7f1e5ea90700 (LWP 8878)):
#0  0x00007f1e7d4c53cd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f1e7090d1dc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1e7090d304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1e7a0b1036 in QEventDispatcherGlib::processEvents (this=0x7f1e580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f1e7a08138f in QEventLoop::processEvents (this=this@entry=0x7f1e5ea8fd90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f1e7a081618 in QEventLoop::exec (this=this@entry=0x7f1e5ea8fd90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f1e79f83410 in QThread::exec (this=this@entry=0x1ebdab0) at thread/qthread.cpp:542
#7  0x00007f1e7a062edf in QInotifyFileSystemWatcherEngine::run (this=0x1ebdab0) at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00007f1e79f85bec in QThreadPrivate::start (arg=0x1ebdab0) at thread/qthread_unix.cpp:338
#9  0x00007f1e7100ff8e in start_thread (arg=0x7f1e5ea90700) at pthread_create.c:311
#10 0x00007f1e7d4d1e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7f1e5d6ee700 (LWP 8879)):
#0  0x00007f1e7090a4e0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1e7090c89f in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1e7090d0fe in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1e7090d304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1e7a0b1036 in QEventDispatcherGlib::processEvents (this=0x7f1e4c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007f1e7a08138f in QEventLoop::processEvents (this=this@entry=0x7f1e5d6edd90, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f1e7a081618 in QEventLoop::exec (this=this@entry=0x7f1e5d6edd90, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f1e79f83410 in QThread::exec (this=this@entry=0x1f09750) at thread/qthread.cpp:542
#8  0x00007f1e7a062edf in QInotifyFileSystemWatcherEngine::run (this=0x1f09750) at io/qfilesystemwatcher_inotify.cpp:256
#9  0x00007f1e79f85bec in QThreadPrivate::start (arg=0x1f09750) at thread/qthread_unix.cpp:338
#10 0x00007f1e7100ff8e in start_thread (arg=0x7f1e5d6ee700) at pthread_create.c:311
#11 0x00007f1e7d4d1e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f1e3dea3700 (LWP 8884)):
#0  0x00007f1e7094c359 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1e7094c5b9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1e7090d1c2 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1e7090d304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1e7a0b1036 in QEventDispatcherGlib::processEvents (this=0x7f1e380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007f1e7a08138f in QEventLoop::processEvents (this=this@entry=0x7f1e3dea2d80, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f1e7a081618 in QEventLoop::exec (this=this@entry=0x7f1e3dea2d80, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f1e79f83410 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#8  0x00007f1e3fde06e5 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#9  0x00007f1e79f85bec in QThreadPrivate::start (arg=0x3535270) at thread/qthread_unix.cpp:338
#10 0x00007f1e7100ff8e in start_thread (arg=0x7f1e3dea3700) at pthread_create.c:311
#11 0x00007f1e7d4d1e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f1e7dbda7c0 (LWP 8875)):
[KCrash Handler]
#6  isSignalConnected (signal_index=31, this=0x0) at kernel/qobject_p.h:239
#7  QMetaObject::activate (sender=sender@entry=0x757f6a0, m=m@entry=0x7f1e35f7e820 <DeclarativeDragArea::staticMetaObject>, local_signal_index=local_signal_index@entry=6, argv=argv@entry=0x7fff08a90880) at kernel/qobject.cpp:3448
#8  0x00007f1e35d77151 in DeclarativeDragArea::drop (this=this@entry=0x757f6a0, _t1=0) at moc_DeclarativeDragArea.cpp:234
#9  0x00007f1e35d79746 in DeclarativeDragArea::mouseMoveEvent (this=0x757f6a0, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:234
#10 0x00007f1e35d79389 in DeclarativeDragArea::sceneEventFilter (this=0x757f6a0, item=0x66c5b90, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:245
#11 0x00007f1e79a0cee5 in QGraphicsScenePrivate::filterDescendantEvent (this=this@entry=0x1fa72a0, item=item@entry=0x66c5b90, event=event@entry=0x7fff08a91130) at graphicsview/qgraphicsscene.cpp:1159
#12 0x00007f1e79a118ae in QGraphicsScenePrivate::sendEvent (this=0x1fa72a0, item=0x66c5b90, event=0x7fff08a91130) at graphicsview/qgraphicsscene.cpp:1211
#13 0x00007f1e79a124d0 in sendMouseEvent (mouseEvent=0x7fff08a91130, this=0x1fa72a0) at graphicsview/qgraphicsscene.cpp:1295
#14 QGraphicsScenePrivate::sendMouseEvent (this=0x1fa72a0, mouseEvent=0x7fff08a91130) at graphicsview/qgraphicsscene.cpp:1274
#15 0x00007f1e79a1ad7c in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fff08a91130) at graphicsview/qgraphicsscene.cpp:4102
#16 0x00007f1e79a26300 in QGraphicsScene::event (this=0x1fa4b60, event=0x7fff08a91130) at graphicsview/qgraphicsscene.cpp:3451
#17 0x00007f1e794288ec in QApplicationPrivate::notify_helper (this=this@entry=0x1e67720, receiver=receiver@entry=0x1fa4b60, e=e@entry=0x7fff08a91130) at kernel/qapplication.cpp:4567
#18 0x00007f1e7942b25b in QApplication::notify (this=this@entry=0x1e5ab50, receiver=receiver@entry=0x1fa4b60, e=e@entry=0x7fff08a91130) at kernel/qapplication.cpp:4428
#19 0x00007f1e7ad46af6 in KApplication::notify (this=0x1e5ab50, receiver=0x1fa4b60, event=0x7fff08a91130) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007f1e7a08263e in QCoreApplication::notifyInternal (this=0x1e5ab50, receiver=0x1fa4b60, event=0x7fff08a91130, event@entry=0x7fff08a91060) at kernel/qcoreapplication.cpp:946
#21 0x00007f1e79427226 in sendSpontaneousEvent (event=event@entry=0x7fff08a91060, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#22 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fff08a91130) at kernel/qapplication.cpp:5565
#23 0x00007f1e79a3def4 in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x5ed5da0, event=event@entry=0x7fff08a91b60) at graphicsview/qgraphicsview.cpp:646
#24 0x00007f1e79a3e27e in QGraphicsView::mouseMoveEvent (this=0x61624b0, event=0x7fff08a91b60) at graphicsview/qgraphicsview.cpp:3276
#25 0x00007f1e79475abb in QWidget::event (this=this@entry=0x61624b0, event=event@entry=0x7fff08a91b60) at kernel/qwidget.cpp:8360
#26 0x00007f1e79828316 in QFrame::event (this=0x61624b0, e=0x7fff08a91b60) at widgets/qframe.cpp:557
#27 0x00007f1e79a400db in QGraphicsView::viewportEvent (this=0x61624b0, event=0x7fff08a91b60) at graphicsview/qgraphicsview.cpp:2866
#28 0x00007f1e7a0827a6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x1e67720, receiver=receiver@entry=0x61e33f0, event=event@entry=0x7fff08a91b60) at kernel/qcoreapplication.cpp:1056
#29 0x00007f1e794288bc in QApplicationPrivate::notify_helper (this=this@entry=0x1e67720, receiver=receiver@entry=0x61e33f0, e=e@entry=0x7fff08a91b60) at kernel/qapplication.cpp:4563
#30 0x00007f1e7942ba33 in QApplication::notify (this=this@entry=0x1e5ab50, receiver=receiver@entry=0x61e33f0, e=e@entry=0x7fff08a91b60) at kernel/qapplication.cpp:4110
#31 0x00007f1e7ad46af6 in KApplication::notify (this=0x1e5ab50, receiver=0x61e33f0, event=0x7fff08a91b60) at ../../kdeui/kernel/kapplication.cpp:311
#32 0x00007f1e7a08263e in QCoreApplication::notifyInternal (this=0x1e5ab50, receiver=receiver@entry=0x61e33f0, event=event@entry=0x7fff08a91b60) at kernel/qcoreapplication.cpp:946
#33 0x00007f1e7942e933 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#34 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x61e33f0, event=event@entry=0x7fff08a91b60, alienWidget=alienWidget@entry=0x61e33f0, nativeWidget=nativeWidget@entry=0x209af70, buttonDown=buttonDown@entry=0x7f1e79f06308 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#35 0x00007f1e794a3ec4 in QETWidget::translateMouseEvent (this=this@entry=0x209af70, event=event@entry=0x7fff08a922e0) at kernel/qapplication_x11.cpp:4631
#36 0x00007f1e794a2ef1 in QApplication::x11ProcessEvent (this=0x1e5ab50, event=event@entry=0x7fff08a922e0) at kernel/qapplication_x11.cpp:3746
#37 0x00007f1e794ce0b2 in x11EventSourceDispatch (s=0x1e64b90, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#38 0x00007f1e7090cf05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f1e7090d248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f1e7090d304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007f1e7a0b1016 in QEventDispatcherGlib::processEvents (this=0x1ddaad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#42 0x00007f1e794ce1ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#43 0x00007f1e7a08138f in QEventLoop::processEvents (this=this@entry=0x3a37f50, flags=...) at kernel/qeventloop.cpp:149
#44 0x00007f1e7a081618 in QEventLoop::exec (this=this@entry=0x3a37f50, flags=...) at kernel/qeventloop.cpp:204
#45 0x00007f1e794b5596 in QDragManager::drag (this=0x6f2b050, o=o@entry=0x68b7820) at kernel/qdnd_x11.cpp:2032
#46 0x00007f1e7943a528 in QDrag::exec (this=this@entry=0x68b7820, supportedActions=..., defaultDropAction=Qt::MoveAction) at kernel/qdrag.cpp:284
#47 0x00007f1e35d7973c in DeclarativeDragArea::mouseMoveEvent (this=0x6449460, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:233
#48 0x00007f1e35d79389 in DeclarativeDragArea::sceneEventFilter (this=0x6449460, item=0x65cb1d0, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:245
#49 0x00007f1e79a0cee5 in QGraphicsScenePrivate::filterDescendantEvent (this=this@entry=0x1fa72a0, item=item@entry=0x65cb1d0, event=event@entry=0x7fff08a930c0) at graphicsview/qgraphicsscene.cpp:1159
#50 0x00007f1e79a118ae in QGraphicsScenePrivate::sendEvent (this=0x1fa72a0, item=0x65cb1d0, event=0x7fff08a930c0) at graphicsview/qgraphicsscene.cpp:1211
#51 0x00007f1e79a124d0 in sendMouseEvent (mouseEvent=0x7fff08a930c0, this=0x1fa72a0) at graphicsview/qgraphicsscene.cpp:1295
#52 QGraphicsScenePrivate::sendMouseEvent (this=0x1fa72a0, mouseEvent=0x7fff08a930c0) at graphicsview/qgraphicsscene.cpp:1274
#53 0x00007f1e79a1ad7c in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fff08a930c0) at graphicsview/qgraphicsscene.cpp:4102
#54 0x00007f1e79a26300 in QGraphicsScene::event (this=0x1fa4b60, event=0x7fff08a930c0) at graphicsview/qgraphicsscene.cpp:3451
#55 0x00007f1e794288ec in QApplicationPrivate::notify_helper (this=this@entry=0x1e67720, receiver=receiver@entry=0x1fa4b60, e=e@entry=0x7fff08a930c0) at kernel/qapplication.cpp:4567
#56 0x00007f1e7942b25b in QApplication::notify (this=this@entry=0x1e5ab50, receiver=receiver@entry=0x1fa4b60, e=e@entry=0x7fff08a930c0) at kernel/qapplication.cpp:4428
#57 0x00007f1e7ad46af6 in KApplication::notify (this=0x1e5ab50, receiver=0x1fa4b60, event=0x7fff08a930c0) at ../../kdeui/kernel/kapplication.cpp:311
#58 0x00007f1e7a08263e in QCoreApplication::notifyInternal (this=0x1e5ab50, receiver=0x1fa4b60, event=0x7fff08a930c0, event@entry=0x7fff08a92ff0) at kernel/qcoreapplication.cpp:946
#59 0x00007f1e79427226 in sendSpontaneousEvent (event=event@entry=0x7fff08a92ff0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#60 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fff08a930c0) at kernel/qapplication.cpp:5565
#61 0x00007f1e79a3def4 in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x4ec6fd0, event=event@entry=0x7fff08a93af0) at graphicsview/qgraphicsview.cpp:646
#62 0x00007f1e79a3e27e in QGraphicsView::mouseMoveEvent (this=0x3e08980, event=0x7fff08a93af0) at graphicsview/qgraphicsview.cpp:3276
#63 0x00007f1e79475abb in QWidget::event (this=this@entry=0x3e08980, event=event@entry=0x7fff08a93af0) at kernel/qwidget.cpp:8360
#64 0x00007f1e79828316 in QFrame::event (this=0x3e08980, e=0x7fff08a93af0) at widgets/qframe.cpp:557
#65 0x00007f1e79a400db in QGraphicsView::viewportEvent (this=0x3e08980, event=0x7fff08a93af0) at graphicsview/qgraphicsview.cpp:2866
#66 0x00007f1e7a0827a6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x1e67720, receiver=receiver@entry=0x5a61a90, event=event@entry=0x7fff08a93af0) at kernel/qcoreapplication.cpp:1056
#67 0x00007f1e794288bc in QApplicationPrivate::notify_helper (this=this@entry=0x1e67720, receiver=receiver@entry=0x5a61a90, e=e@entry=0x7fff08a93af0) at kernel/qapplication.cpp:4563
#68 0x00007f1e7942ba33 in QApplication::notify (this=this@entry=0x1e5ab50, receiver=receiver@entry=0x5a61a90, e=e@entry=0x7fff08a93af0) at kernel/qapplication.cpp:4110
#69 0x00007f1e7ad46af6 in KApplication::notify (this=0x1e5ab50, receiver=0x5a61a90, event=0x7fff08a93af0) at ../../kdeui/kernel/kapplication.cpp:311
#70 0x00007f1e7a08263e in QCoreApplication::notifyInternal (this=0x1e5ab50, receiver=receiver@entry=0x5a61a90, event=event@entry=0x7fff08a93af0) at kernel/qcoreapplication.cpp:946
#71 0x00007f1e7942e933 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#72 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x5a61a90, event=event@entry=0x7fff08a93af0, alienWidget=alienWidget@entry=0x5a61a90, nativeWidget=nativeWidget@entry=0x5d75920, buttonDown=buttonDown@entry=0x7f1e79f06308 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#73 0x00007f1e794a3ec4 in QETWidget::translateMouseEvent (this=this@entry=0x5d75920, event=event@entry=0x7fff08a94270) at kernel/qapplication_x11.cpp:4631
#74 0x00007f1e794a2ef1 in QApplication::x11ProcessEvent (this=0x1e5ab50, event=event@entry=0x7fff08a94270) at kernel/qapplication_x11.cpp:3746
#75 0x00007f1e794ce0b2 in x11EventSourceDispatch (s=0x1e64b90, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#76 0x00007f1e7090cf05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#77 0x00007f1e7090d248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007f1e7090d304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#79 0x00007f1e7a0b1016 in QEventDispatcherGlib::processEvents (this=0x1ddaad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#80 0x00007f1e794ce1ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#81 0x00007f1e7a08138f in QEventLoop::processEvents (this=this@entry=0x7fff08a94640, flags=...) at kernel/qeventloop.cpp:149
#82 0x00007f1e7a081618 in QEventLoop::exec (this=this@entry=0x7fff08a94640, flags=...) at kernel/qeventloop.cpp:204
#83 0x00007f1e7a086cf6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#84 0x00007f1e79426ffc in QApplication::exec () at kernel/qapplication.cpp:3828
#85 0x00007f1e7d7dd46b in kdemain (argc=1, argv=0x7fff08a94938) at ../../../../plasma/desktop/shell/main.cpp:126
#86 0x00007f1e7d3f9ea5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, ubp_av=0x7fff08a94938, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff08a94928) at libc-start.c:260
#87 0x0000000000400711 in _start ()

This bug may be a duplicate of or related to bug 310523.

Possible duplicates by query: bug 318857, bug 318171, bug 317593, bug 314851, bug 314137.

Reported using DrKonqi

Comment 1 Anne-Marie Mahfouf 2013-06-04 10:13:04 UTC


*** This bug has been marked as a duplicate of bug 310523 ***

Comment 2 Brallan Aguilar 2013-07-23 20:48:47 UTC

Created attachment 81300 [details]
New crash information added by DrKonqi

plasma-desktop (4.10.5) on KDE Platform 4.10.5 using Qt 4.8.4

- What I was doing when the application crashed:

In a fresh KDE I tried to add a pager, the panel was freezing and KDE crashed. Again, I added the pager and panel had another one.

-- Backtrace (Reduced):
#7  0x46cf1582 in isSignalConnected (signal_index=31, this=0x0) at kernel/qobject_p.h:237
[...]
#9  0xb5f7c396 in DeclarativeDragArea::drop(int) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#10 0xb5f7f0b0 in DeclarativeDragArea::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#11 0xb5f7f18c in DeclarativeDragArea::sceneEventFilter(QGraphicsItem*, QEvent*) () from /usr/lib/kde4/imports/org/kde/draganddrop/libdraganddropplugin.so
#12 0x505dd723 in QGraphicsScenePrivate::filterDescendantEvent (this=this@entry=0x89e5d18, item=item@entry=0xb8f1170, event=event@entry=0xbf947570) at graphicsview/qgraphicsscene.cpp:1159