Bug 240767

Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-22-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
Dragging a folder from the QuickAccess Browser to the Desktop into a Widget made the Plasma Workspace Crash, yet it did come right back up.

The crash can be reproduced some of the time.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb786baa0 (LWP 1116))]

Thread 3 (Thread 0xaa402b70 (LWP 1119)):
#0  0x08188522 in g_main_context_check () from /lib/libglib-2.0.so.0
#1  0x081890ce in ?? () from /lib/libglib-2.0.so.0
#2  0x081894b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x04ba760f in QEventDispatcherGlib::processEvents (this=0x8b88658, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#4  0x04b7a059 in QEventLoop::processEvents (this=0xaa402290, flags=) at kernel/qeventloop.cpp:149
#5  0x04b7a4aa in QEventLoop::exec (this=0xaa402290, flags=...) at kernel/qeventloop.cpp:201
#6  0x04a765a8 in QThread::exec (this=0x8b72578) at thread/qthread.cpp:487
#7  0x04b59c1b in QInotifyFileSystemWatcherEngine::run (this=0x8b72578) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x04a7932e in QThreadPrivate::start (arg=0x8b72578) at thread/qthread_unix.cpp:248
#9  0x0011596e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0x00d35a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa9bf9b70 (LWP 1120)):
#0  0x00c67422 in __kernel_vsyscall ()
#1  0x0011a015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x06ce89d7 in ?? () from /usr/lib/libQtWebKit.so.4
#3  0x06ce8a21 in ?? () from /usr/lib/libQtWebKit.so.4
#4  0x0011596e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x00d35a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb786baa0 (LWP 1116)):
[KCrash Handler]
#6  QHashNode<QString, QRectF>::same_key (this=0x848a694, akey=..., ahp=0x0) at /usr/include/qt4/QtCore/qhash.h:225
#7  QHash<QString, QRectF>::findNode (this=0x848a694, akey=..., ahp=0x0) at /usr/include/qt4/QtCore/qhash.h:880
#8  0x013b6bd3 in QHash<QString, QRectF>::contains (this=0x848a688, elementId=...) at /usr/include/qt4/QtCore/qhash.h:867
#9  Plasma::SvgPrivate::elementRect (this=0x848a688, elementId=...) at ../../plasma/svg.cpp:329
#10 0x013b43a9 in Plasma::Svg::hasElement (this=0x9414e08, elementId=...) at ../../plasma/svg.cpp:532
#11 0x01345a05 in Plasma::FrameSvgPrivate::generateBackground (this=0x932e130, frame=0x8482090) at ../../plasma/framesvg.cpp:413
#12 0x013472a4 in Plasma::FrameSvg::paintFrame (this=0x9414e08, painter=0xbfbffd0c, pos=...) at ../../plasma/framesvg.cpp:346
#13 0x012eb2f1 in Plasma::Applet::paint (this=0x8ea90d8, painter=0xbfbffd0c, option=0x8534fe0, widget=0x0) at ../../plasma/applet.cpp:1314
#14 0x067c8f2c in _q_paintItem (item=<value optimized out>, painter=<value optimized out>, option=0x8534fe0, widget=0x0, useWindowOpacity=false, painterStateProtection=true)
    at graphicsview/qgraphicsscene.cpp:4243
#15 0x067cbb1a in _q_paintIntoCache (pix=<value optimized out>, item=<value optimized out>, pixmapExposed=..., itemToPixmap=..., renderHints=..., option=0x8534fe0, 
    painterStateProtection=<value optimized out>) at graphicsview/qgraphicsscene.cpp:4281
#16 0x067e5620 in QGraphicsScenePrivate::drawItemHelper (this=0x8534e80, item=0x8ea90e0, painter=0xbfc01134, option=0x8534fe0, widget=0x8daac80, painterStateProtection=true)
    at graphicsview/qgraphicsscene.cpp:4574
#17 0x067e6044 in QGraphicsScenePrivate::draw (this=0x8534e80, item=0x8ea90e0, painter=0xbfc01134, viewTransform=0xbfc00f6c, transformPtr=0xbfc006f0, exposedRegion=0x8dc3bdc, widget=0x8daac80, 
    opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4827
#18 0x067e6cb3 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x8534e80, item=0x8ea90e0, painter=0xbfc01134, viewTransform=0xbfc00f6c, exposedRegion=0x8dc3bdc, widget=0x8daac80, 
    parentOpacity=1, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4749
#19 0x067e60d4 in QGraphicsScenePrivate::draw (this=0x8534e80, item=0x8715d08, painter=0xbfc01134, viewTransform=0xbfc00f6c, transformPtr=0xbfc00bf0, exposedRegion=0x8dc3bdc, widget=0x8daac80, 
    opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4841
#20 0x067e6cb3 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x8534e80, item=0x8715d08, painter=0xbfc01134, viewTransform=0xbfc00f6c, exposedRegion=0x8dc3bdc, widget=0x8daac80, 
    parentOpacity=1, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4749
#21 0x067e76be in QGraphicsScenePrivate::drawItems (this=0x8534e80, painter=0xbfc01134, viewTransform=0xbfc00f6c, exposedRegion=0x8dc3bdc, widget=0x8daac80) at graphicsview/qgraphicsscene.cpp:4619
#22 0x06801beb in QGraphicsView::paintEvent (this=0x8dbe980, event=0xbfc01834) at graphicsview/qgraphicsview.cpp:3393
#23 0x061916b6 in QWidget::event (this=0x8dbe980, event=0xbfc01834) at kernel/qwidget.cpp:8144
#24 0x0658dfd3 in QFrame::event (this=0x8dbe980, e=0xbfc01834) at widgets/qframe.cpp:557
#25 0x06628382 in QAbstractScrollArea::viewportEvent (this=0x848a694, e=0x848a694) at widgets/qabstractscrollarea.cpp:1036
#26 0x067fe06b in QGraphicsView::viewportEvent (this=0x8dbe980, event=0xbfc01834) at graphicsview/qgraphicsview.cpp:2787
#27 0x0662ac65 in QAbstractScrollAreaPrivate::viewportEvent (this=0x8d91af0, o=0x8daac80, e=0xbfc01834) at widgets/qabstractscrollarea_p.h:100
#28 QAbstractScrollAreaFilter::eventFilter (this=0x8d91af0, o=0x8daac80, e=0xbfc01834) at widgets/qabstractscrollarea_p.h:116
#29 0x04b7acda in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x84398e8, receiver=0x8daac80, event=0xbfc01834) at kernel/qcoreapplication.cpp:819
#30 0x061334b9 in QApplicationPrivate::notify_helper (this=0x84398e8, receiver=0x8daac80, e=0xbfc01834) at kernel/qapplication.cpp:4296
#31 0x0613a0f9 in QApplication::notify (this=0x84337b8, receiver=0x8daac80, e=0xbfc01834) at kernel/qapplication.cpp:4265
#32 0x0104af2a in KApplication::notify (this=0x84337b8, receiver=0x8daac80, event=0xbfc01834) at ../../kdeui/kernel/kapplication.cpp:302
#33 0x04b7ba3b in QCoreApplication::notifyInternal (this=0x84337b8, receiver=0x8daac80, event=0xbfc01834) at kernel/qcoreapplication.cpp:704
#34 0x0619a9d6 in QCoreApplication::sendSpontaneousEvent (this=0x8daac98, pdev=0x8dab8bc, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x8dab6b0)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#35 QWidgetPrivate::drawWidget (this=0x8daac98, pdev=0x8dab8bc, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x8dab6b0) at kernel/qwidget.cpp:5339
#36 0x063717d7 in QWidgetBackingStore::sync (this=0x8dab6b0) at painting/qbackingstore.cpp:1283
#37 0x0618ab93 in QWidgetPrivate::syncBackingStore (this=0x8dc3878) at kernel/qwidget.cpp:1672
#38 0x06191e76 in QWidget::event (this=0x8dbe980, event=0x8477710) at kernel/qwidget.cpp:8291
#39 0x0658dfd3 in QFrame::event (this=0x8dbe980, e=0x8477710) at widgets/qframe.cpp:557
#40 0x06628d97 in QAbstractScrollArea::event (this=0x8dbe980, e=0x8477710) at widgets/qabstractscrollarea.cpp:989
#41 0x06800216 in QGraphicsView::event (this=0x8dbe980, event=0x8477710) at graphicsview/qgraphicsview.cpp:2666
#42 0x061334dc in QApplicationPrivate::notify_helper (this=0x84398e8, receiver=0x8dbe980, e=0x8477710) at kernel/qapplication.cpp:4300
#43 0x0613a0f9 in QApplication::notify (this=0x84337b8, receiver=0x8dbe980, e=0x8477710) at kernel/qapplication.cpp:4265
#44 0x0104af2a in KApplication::notify (this=0x84337b8, receiver=0x8dbe980, event=0x8477710) at ../../kdeui/kernel/kapplication.cpp:302
#45 0x04b7ba3b in QCoreApplication::notifyInternal (this=0x84337b8, receiver=0x8dbe980, event=0x8477710) at kernel/qcoreapplication.cpp:704
#46 0x04b7e473 in QCoreApplication::sendEvent (receiver=0x8dbe980, event_type=77, data=0x83ecfc8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#47 QCoreApplicationPrivate::sendPostedEvents (receiver=0x8dbe980, event_type=77, data=0x83ecfc8) at kernel/qcoreapplication.cpp:1345
#48 0x04b7e5dd in QCoreApplication::sendPostedEvents (receiver=0x8dbe980, event_type=77) at kernel/qcoreapplication.cpp:1238
#49 0x067e3326 in QGraphicsViewPrivate::dispatchPendingUpdateRequests (this=0x8534e80) at ../../include/QtGui/private/../../../src/gui/graphicsview/qgraphicsview_p.h:184
#50 QGraphicsScenePrivate::_q_processDirtyItems (this=0x8534e80) at graphicsview/qgraphicsscene.cpp:509
#51 0x067e3876 in QGraphicsScene::qt_metacall (this=0x8526788, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x8e4ad90) at .moc/release-shared/moc_qgraphicsscene.cpp:130
#52 0x01316d3a in Plasma::Corona::qt_metacall (this=0x8526788, _c=QMetaObject::InvokeMetaMethod, _id=18, _a=0x8e4ad90) at ./corona.moc:107
#53 0x04029fad in DesktopCorona::qt_metacall (this=0x8526788, _c=QMetaObject::InvokeMetaMethod, _id=18, _a=0x8e4ad90) at ./desktopcorona.moc:86
#54 0x04b80c9a in QMetaObject::metacall (object=0x8526788, cl=138978964, idx=18, argv=0x8e4ad90) at kernel/qmetaobject.cpp:237
#55 0x04b8b336 in QMetaCallEvent::placeMetaCall (this=0x90126b8, object=0x8526788) at kernel/qobject.cpp:561
#56 0x04b8c3fe in QObject::event (this=0x8526788, e=0x90126b8) at kernel/qobject.cpp:1248
#57 0x067df554 in QGraphicsScene::event (this=0x8526788, event=0x90126b8) at graphicsview/qgraphicsscene.cpp:3500
#58 0x061334dc in QApplicationPrivate::notify_helper (this=0x84398e8, receiver=0x8526788, e=0x90126b8) at kernel/qapplication.cpp:4300
#59 0x0613a05e in QApplication::notify (this=0x84337b8, receiver=0x8526788, e=0x90126b8) at kernel/qapplication.cpp:3704
#60 0x0104af2a in KApplication::notify (this=0x84337b8, receiver=0x8526788, event=0x90126b8) at ../../kdeui/kernel/kapplication.cpp:302
#61 0x04b7ba3b in QCoreApplication::notifyInternal (this=0x84337b8, receiver=0x8526788, event=0x90126b8) at kernel/qcoreapplication.cpp:704
#62 0x04b7e473 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x83ecfc8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#63 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x83ecfc8) at kernel/qcoreapplication.cpp:1345
#64 0x04b7e5dd in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#65 0x04ba7adf in QCoreApplication::sendPostedEvents (s=0x843b910) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#66 postEventSourceDispatch (s=0x843b910) at kernel/qeventdispatcher_glib.cpp:276
#67 0x081855e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#68 0x081892d8 in ?? () from /lib/libglib-2.0.so.0
#69 0x081894b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#70 0x04ba75d5 in QEventDispatcherGlib::processEvents (this=0x8439790, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#71 0x061f3135 in QGuiEventDispatcherGlib::processEvents (this=0x8439790, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#72 0x04b7a059 in QEventLoop::processEvents (this=0xbfc02d94, flags=) at kernel/qeventloop.cpp:149
#73 0x04b7a4aa in QEventLoop::exec (this=0xbfc02d94, flags=...) at kernel/qeventloop.cpp:201
#74 0x04b7e69f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#75 0x06133577 in QApplication::exec () at kernel/qapplication.cpp:3579
#76 0x0403205e in kdemain (argc=1, argv=0x841f548) at ../../../../plasma/desktop/shell/main.cpp:112
#77 0x0804e133 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x8402e60 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051465 "0") at ../../kinit/kinit.cpp:717
#78 0x0804ec6d in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#79 0x0804f190 in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1402
#80 0x0804fe4f in main (argc=4, argv=0xbfc03844, envp=0xbfc03858) at ../../kinit/kinit.cpp:1845

Reported using DrKonqi