Bug 226454

Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.00 (KDE 4.4.0)
Qt Version: 4.6.1
Operating System: Linux 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

-- Information about the crash:
Just updated to KDE 4.4 and was messing around with it...

the first thing I noticed is it reset my panel to some minimal default widgets (and almost no notification icons on the system tray widget)... then while re-populating my panel with the widgets I find useful and re-organizing them I just lost the plasma desktop, the Crash Reporting Assistant appeared and plasma was automatically relaunched... with my original widgets all in place and all my regular notification icons on the system tray widget.

The crash can be reproduced some of the time.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#6  0x00000002 in ?? ()
#7  0x03abc14d in QGraphicsItem::sceneEvent (this=0x8fdad98, event=0xbf834c9c) at graphicsview/qgraphicsitem.cpp:6380
#8  0x03b0cdd7 in QGraphicsWidget::sceneEvent (this=0x8fdad98, event=0xbf834c9c) at graphicsview/qgraphicswidget.cpp:1129
#9  0x03ad1219 in QGraphicsScenePrivate::sendEvent (this=0x8cec320, item=0x8fdada0, event=0xbf834c9c) at graphicsview/qgraphicsscene.cpp:1158
#10 0x03ad1608 in QGraphicsScenePrivate::sendDragDropEvent (this=0x8cec320, item=0x8fdada0, dragDropEvent=0xbf834c9c) at graphicsview/qgraphicsscene.cpp:1187
#11 0x03ad168a in QGraphicsScene::dragLeaveEvent (this=0x8d8db30, event=0xbf834c9c) at graphicsview/qgraphicsscene.cpp:3648
#12 0x076999a4 in Plasma::Corona::dragLeaveEvent (this=0x8d8db30, event=0xbf834c9c) at ../../plasma/corona.cpp:701
#13 0x03ae6874 in QGraphicsScene::event (this=0x8d8db30, event=0xbf834c9c) at graphicsview/qgraphicsscene.cpp:3321
#14 0x0343c27c in QApplicationPrivate::notify_helper (this=0x8c7d210, receiver=0x8d8db30, e=0xbf834c9c) at kernel/qapplication.cpp:4298
#15 0x03442ede in QApplication::notify (this=0x8c77468, receiver=0x8d8db30, e=0xbf834c9c) at kernel/qapplication.cpp:3702
#16 0x00e951fa in KApplication::notify (this=0x8c77468, receiver=0x8d8db30, event=0xbf834c9c) at ../../kdeui/kernel/kapplication.cpp:302
#17 0x00b25cfb in QCoreApplication::notifyInternal (this=0x8c77468, receiver=0x8d8db30, event=0xbf834c9c) at kernel/qcoreapplication.cpp:704
#18 0x03b05521 in QCoreApplication::sendEvent (this=0x9124d60, event=0xbf835384) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QGraphicsView::dragLeaveEvent (this=0x9124d60, event=0xbf835384) at graphicsview/qgraphicsview.cpp:2912
#20 0x0146457a in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#21 0x0349a551 in QWidget::event (this=0x9124d60, event=0xbf835384) at kernel/qwidget.cpp:8180
#22 0x03895b23 in QFrame::event (this=0x9124d60, e=0xbf835384) at widgets/qframe.cpp:557
#23 0x0392fda2 in QAbstractScrollArea::viewportEvent (this=0x7816744, e=0xbf83463c) at widgets/qabstractscrollarea.cpp:1036
#24 0x03b04dfb in QGraphicsView::viewportEvent (this=0x9124d60, event=0xbf835384) at graphicsview/qgraphicsview.cpp:2788
#25 0x03932695 in QAbstractScrollAreaPrivate::viewportEvent (this=0x94b4610, o=0x92f8738, e=0xbf835384) at widgets/qabstractscrollarea_p.h:100
#26 QAbstractScrollAreaFilter::eventFilter (this=0x94b4610, o=0x92f8738, e=0xbf835384) at widgets/qabstractscrollarea_p.h:116
#27 0x00b24f9a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8c7d210, receiver=0x92f8738, event=0xbf835384) at kernel/qcoreapplication.cpp:819
#28 0x0343c259 in QApplicationPrivate::notify_helper (this=0x8c7d210, receiver=0x92f8738, e=0xbf835384) at kernel/qapplication.cpp:4294
#29 0x034433bd in QApplication::notify (this=0x8c77468, receiver=0x92f8738, e=0xbf835384) at kernel/qapplication.cpp:4106
#30 0x00e951fa in KApplication::notify (this=0x8c77468, receiver=0x92f8738, event=0xbf835384) at ../../kdeui/kernel/kapplication.cpp:302
#31 0x00b25cfb in QCoreApplication::notifyInternal (this=0x8c77468, receiver=0x92f8738, event=0xbf835384) at kernel/qcoreapplication.cpp:704
#32 0x034db8ba in QCoreApplication::sendEvent (this=0x8c80b68, w=0x9124d60, xe=0xbf8353dc) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#33 QX11Data::xdndHandleLeave (this=0x8c80b68, w=0x9124d60, xe=0xbf8353dc) at kernel/qdnd_x11.cpp:1058
#34 0x034dba5d in qt_xdnd_send_leave () at kernel/qdnd_x11.cpp:1097
#35 0x034dc55d in QDragManager::cancel (this=0x9ae38f8, deleteSource=false) at kernel/qdnd_x11.cpp:1384
#36 0x03454b10 in ~QDrag (this=0x9c27870, __in_chrg=<value optimized out>) at kernel/qdrag.cpp:132
#37 0x00b3547f in QObjectPrivate::deleteChildren (this=0xb43e598) at kernel/qobject.cpp:1986
#38 0x034a1627 in ~QWidget (this=0x9cd2b28, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1460
#39 0x00b3547f in QObjectPrivate::deleteChildren (this=0x8f51e70) at kernel/qobject.cpp:1986
#40 0x034a20c7 in ~QWidget (this=0x94d8648, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1460
#41 0x03895e21 in ~QFrame (this=0x94d8648, __in_chrg=<value optimized out>) at widgets/qframe.cpp:242
#42 0x03931b34 in ~QAbstractScrollArea (this=0x94d8648, __in_chrg=<value optimized out>) at widgets/qabstractscrollarea.cpp:524
#43 0x03affea1 in ~QGraphicsView (this=0x94d8648, __in_chrg=<value optimized out>) at graphicsview/qgraphicsview.cpp:1097
#44 0x0774af7c in ~View (this=0x94d8648, __in_chrg=<value optimized out>) at ../../plasma/view.cpp:170
#45 0x0144cf1b in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#46 0x00b35055 in qDeleteInEventHandler (o=0x94dc3b8) at kernel/qobject.cpp:3980
#47 0x00b36778 in QObject::event (this=0x9d1e2d0, e=0xbf83463c) at kernel/qobject.cpp:1231
#48 0x0349a0d6 in QWidget::event (this=0x9d1e2d0, event=0x8fc04b8) at kernel/qwidget.cpp:8435
#49 0x0343c27c in QApplicationPrivate::notify_helper (this=0x8c7d210, receiver=0x9d1e2d0, e=0x8fc04b8) at kernel/qapplication.cpp:4298
#50 0x03442f79 in QApplication::notify (this=0x8c77468, receiver=0x9d1e2d0, e=0x8fc04b8) at kernel/qapplication.cpp:4263
#51 0x00e951fa in KApplication::notify (this=0x8c77468, receiver=0x9d1e2d0, event=0x8fc04b8) at ../../kdeui/kernel/kapplication.cpp:302
#52 0x00b25cfb in QCoreApplication::notifyInternal (this=0x8c77468, receiver=0x9d1e2d0, event=0x8fc04b8) at kernel/qcoreapplication.cpp:704
#53 0x00b28733 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x8c2f658) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#54 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8c2f658) at kernel/qcoreapplication.cpp:1345
#55 0x00b2889d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#56 0x00b51def in QCoreApplication::sendPostedEvents (s=0x8c7f2c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#57 postEventSourceDispatch (s=0x8c7f2c0) at kernel/qeventdispatcher_glib.cpp:276
#58 0x010c9e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#59 0x010cd730 in ?? () from /lib/libglib-2.0.so.0
#60 0x010cd863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#61 0x00b518e5 in QEventDispatcherGlib::processEvents (this=0x8c7cee0, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#62 0x034fb485 in QGuiEventDispatcherGlib::processEvents (this=0x8c7cee0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#63 0x00b24319 in QEventLoop::processEvents (this=0xa029b90, flags=) at kernel/qeventloop.cpp:149
#64 0x00b2476a in QEventLoop::exec (this=0xa029b90, flags=...) at kernel/qeventloop.cpp:201
#65 0x034e1848 in QDragManager::drag (this=0x9ae38f8, o=0x9c27870) at kernel/qdnd_x11.cpp:1960
#66 0x034548be in QDrag::exec (this=0x9c27870, supportedActions=..., defaultDropAction=Qt::IgnoreAction) at kernel/qdrag.cpp:282
#67 0x03454974 in QDrag::exec (this=0x9c27870, supportedActions=...) at kernel/qdrag.cpp:239
#68 0x0174e56d in ?? () from /usr/lib/libplasmagenericshell.so.4
#69 0x03abc220 in QGraphicsItem::sceneEvent (this=0xbf836140, event=0x97a84e8) at graphicsview/qgraphicsitem.cpp:6395
#70 0x03b0cdd7 in QGraphicsWidget::sceneEvent (this=0x97a84e8, event=0xbf836974) at graphicsview/qgraphicswidget.cpp:1129
#71 0x03ad1219 in QGraphicsScenePrivate::sendEvent (this=0x8cec320, item=0x97a84f0, event=0xbf836974) at graphicsview/qgraphicsscene.cpp:1158
#72 0x03ad399b in QGraphicsScenePrivate::sendMouseEvent (this=0x8cec320, mouseEvent=0xbf836974) at graphicsview/qgraphicsscene.cpp:1232
#73 0x03ad74ed in QGraphicsScene::mouseMoveEvent (this=0x8d8db30, mouseEvent=0xbf836974) at graphicsview/qgraphicsscene.cpp:4006
#74 0x03ae69ed in QGraphicsScene::event (this=0x8d8db30, event=0xbf836974) at graphicsview/qgraphicsscene.cpp:3366
#75 0x0343c27c in QApplicationPrivate::notify_helper (this=0x8c7d210, receiver=0x8d8db30, e=0xbf836974) at kernel/qapplication.cpp:4298
#76 0x03442ede in QApplication::notify (this=0x8c77468, receiver=0x8d8db30, e=0xbf836974) at kernel/qapplication.cpp:3702
#77 0x00e951fa in KApplication::notify (this=0x8c77468, receiver=0x8d8db30, event=0xbf836974) at ../../kdeui/kernel/kapplication.cpp:302
#78 0x00b25cfb in QCoreApplication::notifyInternal (this=0x8c77468, receiver=0x8d8db30, event=0xbf836974) at kernel/qcoreapplication.cpp:704
#79 0x0343d15e in QCoreApplication::sendSpontaneousEvent (receiver=0x8d8db30, event=0xbf83463c) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#80 qt_sendSpontaneousEvent (receiver=0x8d8db30, event=0xbf83463c) at kernel/qapplication.cpp:5277
#81 0x03b07382 in QGraphicsViewPrivate::mouseMoveEventHandler (this=0x8f51e70, event=0xbf8371b0) at graphicsview/qgraphicsview.cpp:645
#82 0x03b075c6 in QGraphicsView::mouseMoveEvent (this=0x94d8648, event=0xbf8371b0) at graphicsview/qgraphicsview.cpp:3198
#83 0x0349a44a in QWidget::event (this=0x94d8648, event=0xbf8371b0) at kernel/qwidget.cpp:7963
#84 0x03895b23 in QFrame::event (this=0x94d8648, e=0xbf8371b0) at widgets/qframe.cpp:557
#85 0x0392fda2 in QAbstractScrollArea::viewportEvent (this=0x7816744, e=0xbf83463c) at widgets/qabstractscrollarea.cpp:1036
#86 0x03b04dfb in QGraphicsView::viewportEvent (this=0x94d8648, event=0xbf8371b0) at graphicsview/qgraphicsview.cpp:2788
#87 0x03932695 in QAbstractScrollAreaPrivate::viewportEvent (this=0x99a95d0, o=0x9cd2b28, e=0xbf8371b0) at widgets/qabstractscrollarea_p.h:100
#88 QAbstractScrollAreaFilter::eventFilter (this=0x99a95d0, o=0x9cd2b28, e=0xbf8371b0) at widgets/qabstractscrollarea_p.h:116
#89 0x00b24f9a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8c7d210, receiver=0x9cd2b28, event=0xbf8371b0) at kernel/qcoreapplication.cpp:819
#90 0x0343c259 in QApplicationPrivate::notify_helper (this=0x8c7d210, receiver=0x9cd2b28, e=0xbf8371b0) at kernel/qapplication.cpp:4294
#91 0x03443877 in QApplication::notify (this=0x8c77468, receiver=0x9cd2b28, e=0xbf8371b0) at kernel/qapplication.cpp:3863
#92 0x00e951fa in KApplication::notify (this=0x8c77468, receiver=0x9cd2b28, event=0xbf8371b0) at ../../kdeui/kernel/kapplication.cpp:302
#93 0x00b25cfb in QCoreApplication::notifyInternal (this=0x8c77468, receiver=0x9cd2b28, event=0xbf8371b0) at kernel/qcoreapplication.cpp:704
#94 0x034427cf in QCoreApplication::sendEvent (receiver=0x9cd2b28, event=0xbf8371b0, alienWidget=0x9cd2b28, nativeWidget=0x9d1e2d0, buttonDown=0x3d7d058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#95 QApplicationPrivate::sendMouseEvent (receiver=0x9cd2b28, event=0xbf8371b0, alienWidget=0x9cd2b28, nativeWidget=0x9d1e2d0, buttonDown=0x3d7d058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2963
#96 0x034cd618 in QETWidget::translateMouseEvent (this=0x9d1e2d0, event=0xbf8376cc) at kernel/qapplication_x11.cpp:4368
#97 0x034ccaf1 in QApplication::x11ProcessEvent (this=0x8c77468, event=0xbf8376cc) at kernel/qapplication_x11.cpp:3379
#98 0x034fb95a in x11EventSourceDispatch (s=0x8c7ff00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#99 0x010c9e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#100 0x010cd730 in ?? () from /lib/libglib-2.0.so.0
#101 0x010cd863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#102 0x00b518e5 in QEventDispatcherGlib::processEvents (this=0x8c7cee0, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#103 0x034fb485 in QGuiEventDispatcherGlib::processEvents (this=0x8c7cee0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#104 0x00b24319 in QEventLoop::processEvents (this=0xbf8379c4, flags=) at kernel/qeventloop.cpp:149
#105 0x00b2476a in QEventLoop::exec (this=0xbf8379c4, flags=...) at kernel/qeventloop.cpp:201
#106 0x00b2895f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#107 0x0343c317 in QApplication::exec () at kernel/qapplication.cpp:3577
#108 0x0145d17e in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#109 0x0804dff7 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x8c4df48 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051405 "0") at ../../kinit/kinit.cpp:717
#110 0x0804ec15 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#111 0x0804f08c in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1402
#112 0x0804fe2f in main (argc=4, argv=0xbf838474, envp=0xbf838488) at ../../kinit/kinit.cpp:1841

This bug may be a duplicate of or related to bug 187251.

Possible duplicates by query: bug 225123, bug 224924, bug 224427, bug 224220, bug 223914.

Reported using DrKonqi