Application: plasma-desktop (0.3)
KDE Platform Version: 4.5.2 (KDE 4.5.2)
Qt Version: 4.7.0
Operating System: Linux 2.6.35.6-45.fc14.x86_64 x86_64

-- Information about the crash:
crash kde desktop in panel tool box

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f26ca396840 (LWP 2338))]

Thread 2 (Thread 0x7f26a74c5700 (LWP 2339)):
#0  0x00007f26c536d8c4 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f26c9779d14 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f26c9a92540) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f26c9779d49 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f26c9aa0614) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f26c5368d5b in start_thread () from /lib64/libpthread.so.0
#4  0x00007f26c3a2027d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f26ca396840 (LWP 2338)):
[KCrash Handler]
#6  QWidget::mapToParent (this=0x0, pos=...) at kernel/qwidget.cpp:4148
#7  0x00007f26c48cdb8b in QWidget::mapTo (this=<value optimized out>, parent=0x1cc42a0, pos=<value optimized out>) at kernel/qwidget.cpp:4104
#8  0x00007f26c4a96fee in qt_flush (this=0x1cef240, widget=<value optimized out>, surface=<value optimized out>) at painting/qbackingstore.cpp:102
#9  QWidgetBackingStore::flush (this=0x1cef240, widget=<value optimized out>, surface=<value optimized out>) at painting/qbackingstore.cpp:1400
#10 0x00007f26c4a9804f in QWidgetBackingStore::sync (this=0x1cef240) at painting/qbackingstore.cpp:1331
#11 0x00007f26c48d13f0 in QWidgetPrivate::syncBackingStore (this=0x1cd11b0) at kernel/qwidget.cpp:1805
#12 0x00007f26c48de6e2 in QWidget::event (this=0x1cc42a0, event=0x2f18470) at kernel/qwidget.cpp:8480
#13 0x00007f26c4c823d6 in QFrame::event (this=0x1cc42a0, e=0x2f18470) at widgets/qframe.cpp:557
#14 0x00007f26c4d0359b in QAbstractScrollArea::event (this=0x1cc42a0, e=0x2f18470) at widgets/qabstractscrollarea.cpp:996
#15 0x00007f26c9f83120 in PanelView::event (this=0x1cc42a0, event=0x2f18470) at /usr/src/debug/kdebase-workspace-4.5.2/plasma/desktop/shell/panelview.cpp:1534
#16 0x00007f26c488cb64 in QApplicationPrivate::notify_helper (this=0x1873450, receiver=0x1cc42a0, e=0x2f18470) at kernel/qapplication.cpp:4396
#17 0x00007f26c48915da in QApplication::notify (this=<value optimized out>, receiver=0x1cc42a0, e=0x2f18470) at kernel/qapplication.cpp:4277
#18 0x00007f26c635f416 in KApplication::notify (this=0x1863210, receiver=0x1cc42a0, event=0x2f18470) at /usr/src/debug/kdelibs-4.5.2/kdeui/kernel/kapplication.cpp:310
#19 0x00007f26c56da7bc in QCoreApplication::notifyInternal (this=0x1863210, receiver=0x1cc42a0, event=0x2f18470) at kernel/qcoreapplication.cpp:732
#20 0x00007f26c56ddf65 in sendEvent (receiver=0x1cc42a0, event_type=77, data=0x1849ef0) at kernel/qcoreapplication.h:215
#21 QCoreApplicationPrivate::sendPostedEvents (receiver=0x1cc42a0, event_type=77, data=0x1849ef0) at kernel/qcoreapplication.cpp:1373
#22 0x00007f26c4e7e32a in dispatchPendingUpdateRequests (this=0x197be10) at ../../src/gui/graphicsview/qgraphicsview_p.h:189
#23 QGraphicsScenePrivate::_q_processDirtyItems (this=0x197be10) at graphicsview/qgraphicsscene.cpp:510
#24 0x00007f26c4e7e73a in QGraphicsScene::qt_metacall (this=0x1868e40, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x3058c50) at .moc/release-shared/moc_qgraphicsscene.cpp:130
#25 0x00007f26c8ab6d55 in Plasma::Corona::qt_metacall (this=0x1868e40, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x3058c50) at /usr/src/debug/kdelibs-4.5.2/x86_64-redhat-linux-gnu/plasma/corona.moc:109
#26 0x00007f26c9f78c95 in DesktopCorona::qt_metacall (this=0x1868e40, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x3058c50) at /usr/src/debug/kdebase-workspace-4.5.2/x86_64-redhat-linux-gnu/plasma/desktop/shell/desktopcorona.moc:101
#27 0x00007f26c56eeb3a in QObject::event (this=0x1868e40, e=<value optimized out>) at kernel/qobject.cpp:1211
#28 0x00007f26c4e8ad50 in QGraphicsScene::event (this=0x1868e40, event=0x28c57a0) at graphicsview/qgraphicsscene.cpp:3548
#29 0x00007f26c488cb64 in QApplicationPrivate::notify_helper (this=0x1873450, receiver=0x1868e40, e=0x28c57a0) at kernel/qapplication.cpp:4396
#30 0x00007f26c48915da in QApplication::notify (this=<value optimized out>, receiver=0x1868e40, e=0x28c57a0) at kernel/qapplication.cpp:4277
#31 0x00007f26c635f416 in KApplication::notify (this=0x1863210, receiver=0x1868e40, event=0x28c57a0) at /usr/src/debug/kdelibs-4.5.2/kdeui/kernel/kapplication.cpp:310
#32 0x00007f26c56da7bc in QCoreApplication::notifyInternal (this=0x1863210, receiver=0x1868e40, event=0x28c57a0) at kernel/qcoreapplication.cpp:732
#33 0x00007f26c56ddf65 in sendEvent (receiver=0x0, event_type=0, data=0x1849ef0) at kernel/qcoreapplication.h:215
#34 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1849ef0) at kernel/qcoreapplication.cpp:1373
#35 0x00007f26c5705743 in sendPostedEvents (s=<value optimized out>) at kernel/qcoreapplication.h:220
#36 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#37 0x00007f26bd0a7e33 in g_main_dispatch (context=0x1875d20) at gmain.c:2149
#38 g_main_context_dispatch (context=0x1875d20) at gmain.c:2702
#39 0x00007f26bd0a8610 in g_main_context_iterate (context=0x1875d20, block=1, dispatch=1, self=<value optimized out>) at gmain.c:2780
#40 0x00007f26bd0a88ad in g_main_context_iteration (context=0x1875d20, may_block=1) at gmain.c:2843
#41 0x00007f26c57058df in QEventDispatcherGlib::processEvents (this=0x1849700, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#42 0x00007f26c49307ae in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#43 0x00007f26c56d9b52 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#44 0x00007f26c56d9d9c in QEventLoop::exec (this=0x7fffe6f74e40, flags=...) at kernel/qeventloop.cpp:201
#45 0x00007f26c56de21b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#46 0x00007f26c9f7e00b in kdemain (argc=1, argv=0x7fffe6f75228) at /usr/src/debug/kdebase-workspace-4.5.2/plasma/desktop/shell/main.cpp:118
#47 0x00007f26c395ae7d in __libc_start_main (main=0x400900 <main(int, char**)>, argc=1, ubp_av=0x7fffe6f75228, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffe6f75218) at libc-start.c:226
#48 0x0000000000400829 in _start ()

Possible duplicates by query: bug 258503, bug 255168, bug 250517, bug 247520, bug 236202.

Reported using DrKonqi