Application: plasma-desktop (4.11.2)
KDE Platform Version: 4.11.2
Qt Version: 4.8.4
Operating System: Linux 3.11.0-12-generic x86_64
Distribution: Ubuntu 13.10

-- Information about the crash:
Dragged quicklaunch widget towards task bar and moving into position near left hand side. This worked at my second attempt without crashing.

-- 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 0x7f006d9fe7c0 (LWP 3206))]

Thread 4 (Thread 0x7f004d009700 (LWP 3208)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f00666a706b in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f00666a70a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f005ddd9764 in ?? () from /usr/lib/nvidia-304/libGL.so.1
#4  0x00007f0060d61f6e in start_thread (arg=0x7f004d009700) at pthread_create.c:311
#5  0x00007f006d2f49cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7effc20a8700 (LWP 3212)):
#0  0x00007f0060657123 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f006065762b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f006065779c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0069ec0a76 in QEventDispatcherGlib::processEvents (this=0x7effbc0008f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f0069e925ef in QEventLoop::processEvents (this=this@entry=0x7effc20a7cb0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f0069e928e5 in QEventLoop::exec (this=this@entry=0x7effc20a7cb0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f0069d9188f in QThread::exec (this=this@entry=0x2a1d620) at thread/qthread.cpp:542
#7  0x00007f0069e73d13 in QInotifyFileSystemWatcherEngine::run (this=0x2a1d620) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007f0069d93f2f in QThreadPrivate::start (arg=0x2a1d620) at thread/qthread_unix.cpp:338
#9  0x00007f005ddd9764 in ?? () from /usr/lib/nvidia-304/libGL.so.1
#10 0x00007f0060d61f6e in start_thread (arg=0x7effc20a8700) at pthread_create.c:311
#11 0x00007f006d2f49cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7effba731700 (LWP 3213)):
#0  0x00007f006d2e7f7d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f0060657694 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f006065779c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0069ec0a76 in QEventDispatcherGlib::processEvents (this=0x7effb40008f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f0069e925ef in QEventLoop::processEvents (this=this@entry=0x7effba730cb0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f0069e928e5 in QEventLoop::exec (this=this@entry=0x7effba730cb0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f0069d9188f in QThread::exec (this=this@entry=0x2b776f0) at thread/qthread.cpp:542
#7  0x00007f0069e73d13 in QInotifyFileSystemWatcherEngine::run (this=0x2b776f0) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007f0069d93f2f in QThreadPrivate::start (arg=0x2b776f0) at thread/qthread_unix.cpp:338
#9  0x00007f005ddd9764 in ?? () from /usr/lib/nvidia-304/libGL.so.1
#10 0x00007f0060d61f6e in start_thread (arg=0x7effba731700) at pthread_create.c:311
#11 0x00007f006d2f49cd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f006d9fe7c0 (LWP 3206)):
[KCrash Handler]
#6  0x0000000005e95940 in ?? ()
#7  0x00007effcb57a5c0 in DeclarativeMimeData::DeclarativeMimeData (this=0x7fff648f0a30, copy=0x5e7ca70) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeMimeData.cpp:50
#8  0x00007effcb579db1 in DeclarativeDragDropEvent::DeclarativeDragDropEvent (this=0x7fff648f0a10, e=0x7fff648f0e40, parent=0x23266c0) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragDropEvent.cpp:33
#9  0x00007effcb579ea4 in DeclarativeDropArea::dragLeaveEvent (this=0x23266c0, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDropArea.cpp:44
#10 0x00007f00697d9c72 in QGraphicsItem::sceneEvent (this=this@entry=0x23266d0, event=event@entry=0x7fff648f0e40) at graphicsview/qgraphicsitem.cpp:6721
#11 0x00007f006ba8da54 in QDeclarativeItem::sceneEvent (this=0x23266c0, event=0x7fff648f0e40) at graphicsitems/qdeclarativeitem.cpp:3049
#12 0x00007f0069800757 in QGraphicsScenePrivate::sendDragDropEvent (this=this@entry=0x1d99f30, item=0x23266d0, dragDropEvent=0x7fff648f0e40) at graphicsview/qgraphicsscene.cpp:1250
#13 0x00007f006980078f in QGraphicsScene::dragLeaveEvent (this=<optimized out>, event=<optimized out>) at graphicsview/qgraphicsscene.cpp:3738
#14 0x00007f00698157c0 in QGraphicsScene::event (this=0x1dad260, event=0x7fff648f0e40) at graphicsview/qgraphicsscene.cpp:3406
#15 0x00007f0069230dfc in QApplicationPrivate::notify_helper (this=this@entry=0x1ce6bc0, receiver=receiver@entry=0x1dad260, e=e@entry=0x7fff648f0e40) at kernel/qapplication.cpp:4567
#16 0x00007f0069237470 in QApplication::notify (this=this@entry=0x1c91c90, receiver=receiver@entry=0x1dad260, e=e@entry=0x7fff648f0e40) at kernel/qapplication.cpp:4353
#17 0x00007f006ab57a6a in KApplication::notify (this=0x1c91c90, receiver=0x1dad260, event=0x7fff648f0e40) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f0069e938bd in QCoreApplication::notifyInternal (this=0x1c91c90, receiver=0x1dad260, event=event@entry=0x7fff648f0e40) at kernel/qcoreapplication.cpp:946
#19 0x00007f006982d6d8 in sendEvent (event=0x7fff648f0e40, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#20 QGraphicsView::dragLeaveEvent (this=<optimized out>, event=0x7fff648f1250) at graphicsview/qgraphicsview.cpp:2990
#21 0x00007f0069280087 in QWidget::event (this=this@entry=0x3450940, event=event@entry=0x7fff648f1250) at kernel/qwidget.cpp:8588
#22 0x00007f00696215be in QFrame::event (this=0x3450940, e=0x7fff648f1250) at widgets/qframe.cpp:557
#23 0x00007f006982ce09 in QGraphicsView::viewportEvent (this=0x3450940, event=0x7fff648f1250) at graphicsview/qgraphicsview.cpp:2866
#24 0x00007f0069e93a26 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x1ce6bc0, receiver=receiver@entry=0x39bff10, event=event@entry=0x7fff648f1250) at kernel/qcoreapplication.cpp:1056
#25 0x00007f0069230ddc in QApplicationPrivate::notify_helper (this=this@entry=0x1ce6bc0, receiver=receiver@entry=0x39bff10, e=e@entry=0x7fff648f1250) at kernel/qapplication.cpp:4563
#26 0x00007f00692382fe in QApplication::notify (this=this@entry=0x1c91c90, receiver=receiver@entry=0x39bff10, e=e@entry=0x7fff648f1250) at kernel/qapplication.cpp:4353
#27 0x00007f006ab57a6a in KApplication::notify (this=0x1c91c90, receiver=0x39bff10, event=0x7fff648f1250) at ../../kdeui/kernel/kapplication.cpp:311
#28 0x00007f0069e938bd in QCoreApplication::notifyInternal (this=0x1c91c90, receiver=0x39bff10, event=0x7fff648f1250) at kernel/qcoreapplication.cpp:946
#29 0x00007f00692b850e in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#30 QX11Data::xdndHandleLeave (this=0x7fff648f0980, w=0x5e7ca70, xe=0x7fff648f12a0) at kernel/qdnd_x11.cpp:1068
#31 0x00007f00692b8650 in qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1107
#32 0x00007f00692b8a5a in qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1410
#33 QDragManager::cancel (this=0x5f794e0, deleteSource=deleteSource@entry=false) at kernel/qdnd_x11.cpp:1411
#34 0x00007f0069241b7a in QDrag::~QDrag (this=0x5e7ca90, __in_chrg=<optimized out>) at kernel/qdrag.cpp:132
#35 0x00007f0069241b99 in QDrag::~QDrag (this=0x5e7ca90, __in_chrg=<optimized out>) at kernel/qdrag.cpp:133
#36 0x00007f0069eaa308 in QObjectPrivate::deleteChildren (this=this@entry=0x50b1830) at kernel/qobject.cpp:1907
#37 0x00007f006927cb37 in QWidget::~QWidget (this=0x519f0e0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#38 0x00007f006927ce49 in QWidget::~QWidget (this=0x519f0e0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1705
#39 0x00007f0069eaa308 in QObjectPrivate::deleteChildren (this=this@entry=0x50b1070) at kernel/qobject.cpp:1907
#40 0x00007f006927cb37 in QWidget::~QWidget (this=0x5140af0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#41 0x00007f0069826f65 in QGraphicsView::~QGraphicsView (this=0x5140af0, __in_chrg=<optimized out>) at graphicsview/qgraphicsview.cpp:1158
#42 0x00007f0069826f99 in QGraphicsView::~QGraphicsView (this=0x5140af0, __in_chrg=<optimized out>) at graphicsview/qgraphicsview.cpp:1164
#43 0x00007f006d5ef664 in ControllerWindow::~ControllerWindow (this=0x3f5fa70, __in_chrg=<optimized out>) at ../../../../plasma/desktop/shell/controllerwindow.cpp:107
#44 0x00007f006d5ef6b9 in ControllerWindow::~ControllerWindow (this=0x3f5fa70, __in_chrg=<optimized out>) at ../../../../plasma/desktop/shell/controllerwindow.cpp:108
#45 0x00007f0069eabe08 in QObject::event (this=this@entry=0x3f5fa70, e=e@entry=0x47f5920) at kernel/qobject.cpp:1175
#46 0x00007f006928036b in QWidget::event (this=0x3f5fa70, event=0x47f5920) at kernel/qwidget.cpp:8845
#47 0x00007f0069230dfc in QApplicationPrivate::notify_helper (this=this@entry=0x1ce6bc0, receiver=receiver@entry=0x3f5fa70, e=e@entry=0x47f5920) at kernel/qapplication.cpp:4567
#48 0x00007f0069237470 in QApplication::notify (this=this@entry=0x1c91c90, receiver=receiver@entry=0x3f5fa70, e=e@entry=0x47f5920) at kernel/qapplication.cpp:4353
#49 0x00007f006ab57a6a in KApplication::notify (this=0x1c91c90, receiver=0x3f5fa70, event=0x47f5920) at ../../kdeui/kernel/kapplication.cpp:311
#50 0x00007f0069e938bd in QCoreApplication::notifyInternal (this=0x1c91c90, receiver=receiver@entry=0x3f5fa70, event=event@entry=0x47f5920) at kernel/qcoreapplication.cpp:946
#51 0x00007f0069e96e1f in sendEvent (event=0x47f5920, receiver=0x3f5fa70) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#52 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1bd51f0) at kernel/qcoreapplication.cpp:1570
#53 0x00007f0069e972c3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#54 0x00007f0069ec1073 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#55 postEventSourceDispatch (s=0x1ceb5f0) at kernel/qeventdispatcher_glib.cpp:279
#56 0x00007f00606573a6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#57 0x00007f00606576f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#58 0x00007f006065779c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#59 0x00007f0069ec0a55 in QEventDispatcherGlib::processEvents (this=0x1bd6ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#60 0x00007f00692d29d6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#61 0x00007f0069e925ef in QEventLoop::processEvents (this=this@entry=0x48b0030, flags=...) at kernel/qeventloop.cpp:149
#62 0x00007f0069e928e5 in QEventLoop::exec (this=this@entry=0x48b0030, flags=...) at kernel/qeventloop.cpp:204
#63 0x00007f00692baebd in QDragManager::drag (this=0x5f794e0, o=o@entry=0x5e7ca90) at kernel/qdnd_x11.cpp:2032
#64 0x00007f0069241dda in QDrag::exec (this=this@entry=0x5e7ca90, supportedActions=..., defaultDropAction=Qt::MoveAction) at kernel/qdrag.cpp:284
#65 0x00007effcb579c68 in DeclarativeDragArea::mouseMoveEvent (this=0x58dc1b0, event=<optimized out>) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:233
#66 0x00007effcb579d21 in DeclarativeDragArea::sceneEventFilter (this=0x58dc1b0, item=0x5525be0, event=0x7fff648f2250) at ../../../../plasma/declarativeimports/draganddrop/DeclarativeDragArea.cpp:245
#67 0x00007f00697fbfd5 in QGraphicsScenePrivate::filterDescendantEvent (this=this@entry=0x1d99f30, item=item@entry=0x5525be0, event=event@entry=0x7fff648f2250) at graphicsview/qgraphicsscene.cpp:1159
#68 0x00007f006980063e in QGraphicsScenePrivate::sendEvent (this=0x1d99f30, item=0x5525be0, event=0x7fff648f2250) at graphicsview/qgraphicsscene.cpp:1211
#69 0x00007f0069800b3f in QGraphicsScenePrivate::sendMouseEvent (this=0x1d99f30, mouseEvent=0x7fff648f2250) at graphicsview/qgraphicsscene.cpp:1295
#70 0x00007f00698096f6 in QGraphicsScene::mouseMoveEvent (this=<optimized out>, mouseEvent=0x7fff648f2250) at graphicsview/qgraphicsscene.cpp:4102
#71 0x00007f006981562c in QGraphicsScene::event (this=0x1dad260, event=0x7fff648f2250) at graphicsview/qgraphicsscene.cpp:3451
#72 0x00007f0069230dfc in QApplicationPrivate::notify_helper (this=this@entry=0x1ce6bc0, receiver=receiver@entry=0x1dad260, e=e@entry=0x7fff648f2250) at kernel/qapplication.cpp:4567
#73 0x00007f0069237470 in QApplication::notify (this=this@entry=0x1c91c90, receiver=receiver@entry=0x1dad260, e=e@entry=0x7fff648f2250) at kernel/qapplication.cpp:4353
#74 0x00007f006ab57a6a in KApplication::notify (this=0x1c91c90, receiver=0x1dad260, event=0x7fff648f2250) at ../../kdeui/kernel/kapplication.cpp:311
#75 0x00007f0069e938bd in QCoreApplication::notifyInternal (this=0x1c91c90, receiver=0x1dad260, event=event@entry=0x7fff648f2250) at kernel/qcoreapplication.cpp:946
#76 0x00007f006922f526 in sendSpontaneousEvent (event=event@entry=0x7fff648f2250, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#77 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fff648f2250) at kernel/qapplication.cpp:5565
#78 0x00007f006982a8ac in QGraphicsViewPrivate::mouseMoveEventHandler (this=this@entry=0x50b1070, event=event@entry=0x7fff648f28a0) at graphicsview/qgraphicsview.cpp:646
#79 0x00007f006982b7ba in QGraphicsView::mouseMoveEvent (this=0x5140af0, event=0x7fff648f28a0) at graphicsview/qgraphicsview.cpp:3276
#80 0x00007f0069280445 in QWidget::event (this=this@entry=0x5140af0, event=event@entry=0x7fff648f28a0) at kernel/qwidget.cpp:8360
#81 0x00007f00696215be in QFrame::event (this=0x5140af0, e=0x7fff648f28a0) at widgets/qframe.cpp:557
#82 0x00007f006982ce09 in QGraphicsView::viewportEvent (this=0x5140af0, event=0x7fff648f28a0) at graphicsview/qgraphicsview.cpp:2866
#83 0x00007f0069e93a26 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x1ce6bc0, receiver=receiver@entry=0x519f0e0, event=event@entry=0x7fff648f28a0) at kernel/qcoreapplication.cpp:1056
#84 0x00007f0069230ddc in QApplicationPrivate::notify_helper (this=this@entry=0x1ce6bc0, receiver=receiver@entry=0x519f0e0, e=e@entry=0x7fff648f28a0) at kernel/qapplication.cpp:4563
#85 0x00007f00692375ad in QApplication::notify (this=this@entry=0x1c91c90, receiver=receiver@entry=0x519f0e0, e=e@entry=0x7fff648f28a0) at kernel/qapplication.cpp:4110
#86 0x00007f006ab57a6a in KApplication::notify (this=0x1c91c90, receiver=0x519f0e0, event=0x7fff648f28a0) at ../../kdeui/kernel/kapplication.cpp:311
#87 0x00007f0069e938bd in QCoreApplication::notifyInternal (this=0x1c91c90, receiver=receiver@entry=0x519f0e0, event=event@entry=0x7fff648f28a0) at kernel/qcoreapplication.cpp:946
#88 0x00007f0069236d63 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#89 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x519f0e0, event=event@entry=0x7fff648f28a0, alienWidget=alienWidget@entry=0x519f0e0, nativeWidget=nativeWidget@entry=0x3f5fa70, buttonDown=buttonDown@entry=0x7f0069d152f8 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#90 0x00007f00692ab7db in QETWidget::translateMouseEvent (this=this@entry=0x3f5fa70, event=event@entry=0x7fff648f2c20) at kernel/qapplication_x11.cpp:4631
#91 0x00007f00692ab079 in QApplication::x11ProcessEvent (this=0x1c91c90, event=event@entry=0x7fff648f2c20) at kernel/qapplication_x11.cpp:3624
#92 0x00007f00692d2922 in x11EventSourceDispatch (s=0x1ce58e0, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#93 0x00007f00606573a6 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#94 0x00007f00606576f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#95 0x00007f006065779c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#96 0x00007f0069ec0a55 in QEventDispatcherGlib::processEvents (this=0x1bd6ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#97 0x00007f00692d29d6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#98 0x00007f0069e925ef in QEventLoop::processEvents (this=this@entry=0x7fff648f3000, flags=...) at kernel/qeventloop.cpp:149
#99 0x00007f0069e928e5 in QEventLoop::exec (this=this@entry=0x7fff648f3000, flags=...) at kernel/qeventloop.cpp:204
#100 0x00007f0069e97e5b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#101 0x00007f006922f34c in QApplication::exec () at kernel/qapplication.cpp:3828
#102 0x00007f006d5fe27c in kdemain (argc=1, argv=0x7fff648f3258) at ../../../../plasma/desktop/shell/main.cpp:126
#103 0x00007f006d21bde5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, ubp_av=0x7fff648f3258, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff648f3248) at libc-start.c:260
#104 0x000000000040070e in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 326140.

Possible duplicates by query: bug 326339, bug 326140, bug 320682.

Reported using DrKonqi