Bug 235707

Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-21-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
Fresh Kubuntu Lucid install.  After playing around with plasma widgets for a while, tried to open "add widgets to panel" dialog and plasma crashed.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7726aa0 (LWP 1349))]

Thread 3 (Thread 0xa86b9b70 (LWP 1353)):
#0  0x00667344 in __pthread_mutex_unlock_usercnt () from /lib/tls/i686/cmov/libpthread.so.0
#1  0x0568bc4e in g_main_context_prepare () from /lib/libglib-2.0.so.0
#2  0x0568bee9 in ?? () from /lib/libglib-2.0.so.0
#3  0x0568c4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#4  0x03afb60f in QEventDispatcherGlib::processEvents (this=0x905f6a0, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#5  0x03ace059 in QEventLoop::processEvents (this=0xa86b9290, flags=) at kernel/qeventloop.cpp:149
#6  0x03ace4aa in QEventLoop::exec (this=0xa86b9290, flags=...) at kernel/qeventloop.cpp:201
#7  0x039ca5a8 in QThread::exec (this=0x9043f58) at thread/qthread.cpp:487
#8  0x03aadc1b in QInotifyFileSystemWatcherEngine::run (this=0x9043f58) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x039cd32e in QThreadPrivate::start (arg=0x9043f58) at thread/qthread_unix.cpp:248
#10 0x0066396e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#11 0x00744a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa5e86b70 (LWP 14484)):
#0  0x00920422 in __kernel_vsyscall ()
#1  0x00668015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb68159d7 in ?? () from /usr/lib/libQtWebKit.so.4
#3  0xb6815a21 in ?? () from /usr/lib/libQtWebKit.so.4
#4  0x0066396e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x00744a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7726aa0 (LWP 1349)):
[KCrash Handler]
#6  0x06418012 in QGraphicsScene::addItem (this=0x8ae5b08, item=0x99f1718) at graphicsview/qgraphicsscene.cpp:2596
#7  0x011d7f26 in Plasma::Corona::addOffscreenWidget (this=0x8ae5b08, widget=0x99f1710) at ../../plasma/corona.cpp:501
#8  0x055787ef in ControllerWindow::showWidgetExplorer (this=0xb8c0610) at ../../../../plasma/desktop/shell/controllerwindow.cpp:247
#9  0x0559f60e in PlasmaApp::showWidgetExplorer (this=0x8a87658, screen=0, containment=0xbb06688) at ../../../../plasma/desktop/shell/plasmaapp.cpp:469
#10 0x05590289 in PanelView::showWidgetExplorer (this=0xa34c920) at ../../../../plasma/desktop/shell/panelview.cpp:1056
#11 0x055957db in PanelView::qt_metacall (this=0xa34c920, _c=QMetaObject::InvokeMetaMethod, _id=59, _a=0xbfc321d8) at ./panelview.moc:122
#12 0x03ad4c9a in QMetaObject::metacall (object=0xa34c920, cl=199619240, idx=59, argv=0xbfc321d8) at kernel/qmetaobject.cpp:237
#13 0x03ae33d5 in QMetaObject::activate (sender=0xbb06688, m=0x137b948, local_signal_index=6, argv=0xbfc321d8) at kernel/qobject.cpp:3293
#14 0x011bd0c3 in Plasma::Containment::showAddWidgetsInterface (this=0xbb06688, _t1=...) at ./containment.moc:213
#15 0x011bd0fe in Plasma::ContainmentPrivate::triggerShowAddWidgets (this=0xa2bf280) at ../../plasma/containment.cpp:2167
#16 0x011cdc24 in Plasma::Containment::qt_metacall (this=0xbb06688, _c=QMetaObject::InvokeMetaMethod, _id=74, _a=0xbfc32388) at ./containment.moc:150
#17 0x07decb2a in Panel::qt_metacall (this=0xbb06688, _c=QMetaObject::InvokeMetaMethod, _id=74, _a=0xbfc32388) at ./panel.moc:79
#18 0x03ad4c9a in QMetaObject::metacall (object=0xbb06688, cl=199619240, idx=74, argv=0xbfc32388) at kernel/qmetaobject.cpp:237
#19 0x03ae33d5 in QMetaObject::activate (sender=0xadd5298, m=0x669ad58, local_signal_index=1, argv=0xbfc32388) at kernel/qobject.cpp:3293
#20 0x05d6bbd9 in QAction::triggered (this=0xadd5298, _t1=false) at .moc/release-shared/moc_qaction.cpp:263
#21 0x05d6ddcc in QAction::activate (this=0xadd5298, event=QAction::Trigger) at kernel/qaction.cpp:1255
#22 0x0621160c in QMenuPrivate::activateCausedStack (this=0xb884dd0, causedStack=..., action=0xadd5298, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1011
#23 0x06217abb in QMenuPrivate::activateAction (this=0xb884dd0, action=0xadd5298, action_e=QAction::Trigger, self=<value optimized out>) at widgets/qmenu.cpp:1103
#24 0x06218ac7 in QMenu::mouseReleaseEvent (this=0xbfc3348c, e=0xbfc32c20) at widgets/qmenu.cpp:2312
#25 0x00fccf65 in KMenu::mouseReleaseEvent (this=0xbfc3348c, e=0xbfc32c20) at ../../kdeui/widgets/kmenu.cpp:471
#26 0x05dd07f8 in QWidget::event (this=0xbfc3348c, event=0xbfc32c20) at kernel/qwidget.cpp:7998
#27 0x0621a0cc in QMenu::event (this=0xbfc3348c, e=0xbfc32c20) at widgets/qmenu.cpp:2414
#28 0x05d724dc in QApplicationPrivate::notify_helper (this=0x8a8d728, receiver=0xbfc3348c, e=0xbfc32c20) at kernel/qapplication.cpp:4300
#29 0x05d799f7 in QApplication::notify (this=0x8a87658, receiver=0xbfc3348c, e=0xbfc32c20) at kernel/qapplication.cpp:3865
#30 0x00ed6f2a in KApplication::notify (this=0x8a87658, receiver=0xbfc3348c, event=0xbfc32c20) at ../../kdeui/kernel/kapplication.cpp:302
#31 0x03acfa3b in QCoreApplication::notifyInternal (this=0x8a87658, receiver=0xbfc3348c, event=0xbfc32c20) at kernel/qcoreapplication.cpp:704
#32 0x05d78952 in QCoreApplication::sendEvent (receiver=0xbfc3348c, event=0xbfc32c20, alienWidget=0x0, nativeWidget=0xbfc3348c, buttonDown=0x66b6058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#33 QApplicationPrivate::sendMouseEvent (receiver=0xbfc3348c, event=0xbfc32c20, alienWidget=0x0, nativeWidget=0xbfc3348c, buttonDown=0x66b6058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2965
#34 0x05e045cf in QETWidget::translateMouseEvent (this=0xbfc3348c, event=0xbfc3313c) at kernel/qapplication_x11.cpp:4302
#35 0x05e03511 in QApplication::x11ProcessEvent (this=0x8a87658, event=0xbfc3313c) at kernel/qapplication_x11.cpp:3379
#36 0x05e3260a in x11EventSourceDispatch (s=0x8a90440, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#37 0x056885e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#38 0x0568c2d8 in ?? () from /lib/libglib-2.0.so.0
#39 0x0568c4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#40 0x03afb5d5 in QEventDispatcherGlib::processEvents (this=0x8a8d5d0, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#41 0x05e32135 in QGuiEventDispatcherGlib::processEvents (this=0x8a8d5d0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#42 0x03ace059 in QEventLoop::processEvents (this=0xbfc33430, flags=) at kernel/qeventloop.cpp:149
#43 0x03ace4aa in QEventLoop::exec (this=0xbfc33430, flags=...) at kernel/qeventloop.cpp:201
#44 0x06214dde in QMenu::exec (this=0xbfc3348c, p=..., action=0x0) at widgets/qmenu.cpp:2063
#45 0x015cd821 in ContextMenu::contextEvent (this=0xa5a6098, event=0xbfc33dd4) at ../../../../../plasma/generic/containmentactions/contextmenu/menu.cpp:139
#46 0x011c3be6 in Plasma::Containment::mousePressEvent (this=0xbb06688, event=0xbfc33dd4) at ../../plasma/containment.cpp:577
#47 0x063f363a in QGraphicsItem::sceneEvent (this=0xbb06690, event=0xbfc33dd4) at graphicsview/qgraphicsitem.cpp:6496
#48 0x06445057 in QGraphicsWidget::sceneEvent (this=0xbb06688, event=0xbfc33dd4) at graphicsview/qgraphicswidget.cpp:1129
#49 0x06408d99 in QGraphicsScenePrivate::sendEvent (this=0x8b2b8d8, item=0xbb06690, event=0xbfc33dd4) at graphicsview/qgraphicsscene.cpp:1181
#50 0x0640b26b in QGraphicsScenePrivate::sendMouseEvent (this=0x8b2b8d8, mouseEvent=0xbfc33dd4) at graphicsview/qgraphicsscene.cpp:1255
#51 0x064199f2 in QGraphicsScenePrivate::mousePressEventHandler (this=0x8b2b8d8, mouseEvent=0xbfc33dd4) at graphicsview/qgraphicsscene.cpp:1378
#52 0x0641a01d in QGraphicsScene::mousePressEvent (this=0x8ae5b08, mouseEvent=0xbfc33dd4) at graphicsview/qgraphicsscene.cpp:4003
#53 0x0641e6f4 in QGraphicsScene::event (this=0x8ae5b08, event=0xbfc33dd4) at graphicsview/qgraphicsscene.cpp:3395
#54 0x05d724dc in QApplicationPrivate::notify_helper (this=0x8a8d728, receiver=0x8ae5b08, e=0xbfc33dd4) at kernel/qapplication.cpp:4300
#55 0x05d7905e in QApplication::notify (this=0x8a87658, receiver=0x8ae5b08, e=0xbfc33dd4) at kernel/qapplication.cpp:3704
#56 0x00ed6f2a in KApplication::notify (this=0x8a87658, receiver=0x8ae5b08, event=0xbfc33dd4) at ../../kdeui/kernel/kapplication.cpp:302
#57 0x03acfa3b in QCoreApplication::notifyInternal (this=0x8a87658, receiver=0x8ae5b08, event=0xbfc33dd4) at kernel/qcoreapplication.cpp:704
#58 0x05d732be in QCoreApplication::sendSpontaneousEvent (receiver=0x8ae5b08, event=0x8b2b8d8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#59 qt_sendSpontaneousEvent (receiver=0x8ae5b08, event=0x8b2b8d8) at kernel/qapplication.cpp:5279
#60 0x064404f5 in QGraphicsView::mousePressEvent (this=0xa34c920, event=0xbfc34540) at graphicsview/qgraphicsview.cpp:3085
#61 0x05dd07dc in QWidget::event (this=0xa34c920, event=0xbfc34540) at kernel/qwidget.cpp:7994
#62 0x061ccfd3 in QFrame::event (this=0xa34c920, e=0xbfc34540) at widgets/qframe.cpp:557
#63 0x06267382 in QAbstractScrollArea::viewportEvent (this=0xbe5f2a8, e=0x8b2b8d8) at widgets/qabstractscrollarea.cpp:1036
#64 0x0643d06b in QGraphicsView::viewportEvent (this=0xa34c920, event=0xbfc34540) at graphicsview/qgraphicsview.cpp:2787
#65 0x06269c65 in QAbstractScrollAreaPrivate::viewportEvent (this=0xa9009c0, o=0xa3fdfc0, e=0xbfc34540) at widgets/qabstractscrollarea_p.h:100
#66 QAbstractScrollAreaFilter::eventFilter (this=0xa9009c0, o=0xa3fdfc0, e=0xbfc34540) at widgets/qabstractscrollarea_p.h:116
#67 0x03acecda in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8a8d728, receiver=0xa3fdfc0, event=0xbfc34540) at kernel/qcoreapplication.cpp:819
#68 0x05d724b9 in QApplicationPrivate::notify_helper (this=0x8a8d728, receiver=0xa3fdfc0, e=0xbfc34540) at kernel/qapplication.cpp:4296
#69 0x05d799f7 in QApplication::notify (this=0x8a87658, receiver=0xa3fdfc0, e=0xbfc34540) at kernel/qapplication.cpp:3865
#70 0x00ed6f2a in KApplication::notify (this=0x8a87658, receiver=0xa3fdfc0, event=0xbfc34540) at ../../kdeui/kernel/kapplication.cpp:302
#71 0x03acfa3b in QCoreApplication::notifyInternal (this=0x8a87658, receiver=0xa3fdfc0, event=0xbfc34540) at kernel/qcoreapplication.cpp:704
#72 0x05d78952 in QCoreApplication::sendEvent (receiver=0xa3fdfc0, event=0xbfc34540, alienWidget=0xa3fdfc0, nativeWidget=0xa34c920, buttonDown=0x66b6058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#73 QApplicationPrivate::sendMouseEvent (receiver=0xa3fdfc0, event=0xbfc34540, alienWidget=0xa3fdfc0, nativeWidget=0xa34c920, buttonDown=0x66b6058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2965
#74 0x05e04088 in QETWidget::translateMouseEvent (this=0xa34c920, event=0xbfc34a5c) at kernel/qapplication_x11.cpp:4368
#75 0x05e03511 in QApplication::x11ProcessEvent (this=0x8a87658, event=0xbfc34a5c) at kernel/qapplication_x11.cpp:3379
#76 0x05e3260a in x11EventSourceDispatch (s=0x8a90440, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#77 0x056885e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#78 0x0568c2d8 in ?? () from /lib/libglib-2.0.so.0
#79 0x0568c4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#80 0x03afb5d5 in QEventDispatcherGlib::processEvents (this=0x8a8d5d0, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#81 0x05e32135 in QGuiEventDispatcherGlib::processEvents (this=0x8a8d5d0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#82 0x03ace059 in QEventLoop::processEvents (this=0xbfc34d54, flags=) at kernel/qeventloop.cpp:149
#83 0x03ace4aa in QEventLoop::exec (this=0xbfc34d54, flags=...) at kernel/qeventloop.cpp:201
#84 0x03ad269f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#85 0x05d72577 in QApplication::exec () at kernel/qapplication.cpp:3579
#86 0x0558805e in kdemain (argc=1, argv=0x8a7e2a8) at ../../../../plasma/desktop/shell/main.cpp:112
#87 0x0804e133 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x8a5d628 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051465 "0") at ../../kinit/kinit.cpp:717
#88 0x0804ec6d in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#89 0x0804f190 in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1402
#90 0x0804fe4f in main (argc=4, argv=0xbfc35804, envp=0xbfc35818) at ../../kinit/kinit.cpp:1845

Possible duplicates by query: bug 226012.

Reported using DrKonqi