Bug 269428

Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.1 (4.6.1)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-28-generic i686
Distribution: Dream Studio 10.10

-- Information about the crash:
Hi. My name is Grayson Peddie and while I'm not that used to filing bug reports (I'm just a bit used to it in Launchpad since I am using Ubuntu), this is my first time reporting a bug here, so please bear with me as I'm trying to do the best I can to tell you what happened before the crash.

- What I was doing when the application crashed: Since I am using KDE Search and Launch, I am trying to open the KDE Menu Editor by right-clicking in the K launcher and click in "Edit Application..." The menu editor won't open and it looked like panel froze but I was able to close the application (rekonq) that I was using.

- Unusual behavior I noticed: When I right-click in the K Launcher and choose to "Edit Application," the top and bottom panel seems to freeze for about less than a minute. I closed the rekonq web browser and the task bar still makes it look like the browser is still running, so I went ahead and poke around the panel in the bottom of the screen (my task bar is at the top since I have an Applecation Menu widget in the bottom panel) and while doing so, after I click a couple of times, the plasma desktop crashed and it has been restarted automatically.

This is strange to me, but after the crash, KDE Menu Editor opened and it is able to respond to my mouse clicks. 

I might try to reproduce the bug again, but I might try to reproduce the bug either tomorrow or Sunday (I'm in Eastern Time Zone). Plus, I don't know what distribution method to specify, but I'm running Kubuntu 10.10 with Kubuntu PPA -- I think it's a backport but I couldn't remember, but I can tell you that I've running KDE 4.6.1 since recently (today). I can try to provide more info about what's going on, but that's all I can give you for now.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb76ed720 (LWP 2587))]

Thread 3 (Thread 0xb0262b70 (LWP 2589)):
#0  0x00ef0e36 in clock_gettime () from /lib/librt.so.1
#1  0x05f6c50b in do_gettime () at tools/qelapsedtimer_unix.cpp:105
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:119
#3  0x060436e5 in QTimerInfoList::updateCurrentTime (this=0x8bd638c) at kernel/qeventdispatcher_unix.cpp:339
#4  0x0604372a in QTimerInfoList::timerWait (this=0x8bd638c, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x060417a8 in timerSourcePrepareHelper (src=<value optimized out>, timeout=0xb02620ac) at kernel/qeventdispatcher_glib.cpp:136
#6  0x0604183d in timerSourcePrepare (source=0x0, timeout=0xef4ff4) at kernel/qeventdispatcher_glib.cpp:169
#7  0x02c79e6a in g_main_context_prepare () from /lib/libglib-2.0.so.0
#8  0x02c7a279 in ?? () from /lib/libglib-2.0.so.0
#9  0x02c7a848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#10 0x0604159f in QEventDispatcherGlib::processEvents (this=0x8bc8e08, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#11 0x06011609 in QEventLoop::processEvents (this=0xb0262280, flags=) at kernel/qeventloop.cpp:149
#12 0x06011a8a in QEventLoop::exec (this=0xb0262280, flags=...) at kernel/qeventloop.cpp:201
#13 0x05f0db7e in QThread::exec (this=0x8bd3970) at thread/qthread.cpp:490
#14 0x05ff035b in QInotifyFileSystemWatcherEngine::run (this=0x8bd3970) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x05f10df9 in QThreadPrivate::start (arg=0x8bd3970) at thread/qthread_unix.cpp:266
#16 0x02c24cc9 in start_thread () from /lib/libpthread.so.0
#17 0x0066269e in clone () from /lib/libc.so.6

Thread 2 (Thread 0xae301b70 (LWP 2591)):
#0  0x00ef0e36 in clock_gettime () from /lib/librt.so.1
#1  0x05f6c50b in do_gettime () at tools/qelapsedtimer_unix.cpp:105
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:119
#3  0x060436e5 in QTimerInfoList::updateCurrentTime (this=0x8ceee34) at kernel/qeventdispatcher_unix.cpp:339
#4  0x0604372a in QTimerInfoList::timerWait (this=0x8ceee34, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x060417a8 in timerSourcePrepareHelper (src=<value optimized out>, timeout=0xae3010ac) at kernel/qeventdispatcher_glib.cpp:136
#6  0x0604183d in timerSourcePrepare (source=0x0, timeout=0xef4ff4) at kernel/qeventdispatcher_glib.cpp:169
#7  0x02c79e6a in g_main_context_prepare () from /lib/libglib-2.0.so.0
#8  0x02c7a279 in ?? () from /lib/libglib-2.0.so.0
#9  0x02c7a848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#10 0x0604159f in QEventDispatcherGlib::processEvents (this=0x8cc63f0, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#11 0x06011609 in QEventLoop::processEvents (this=0xae301280, flags=) at kernel/qeventloop.cpp:149
#12 0x06011a8a in QEventLoop::exec (this=0xae301280, flags=...) at kernel/qeventloop.cpp:201
#13 0x05f0db7e in QThread::exec (this=0x8ce9428) at thread/qthread.cpp:490
#14 0x05ff035b in QInotifyFileSystemWatcherEngine::run (this=0x8ce9428) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x05f10df9 in QThreadPrivate::start (arg=0x8ce9428) at thread/qthread_unix.cpp:266
#16 0x02c24cc9 in start_thread () from /lib/libpthread.so.0
#17 0x0066269e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb76ed720 (LWP 2587)):
[KCrash Handler]
#7  0x060265c0 in QMetaObject::changeGuard (ptr=0x9972d00, o=0x94ba690) at kernel/qobject.cpp:455
#8  0x07c39805 in operator= (this=0x9972ba8, event=0xbf9450fc) at ../../include/QtCore/../../src/corelib/kernel/qpointer.h:68
#9  QGraphicsProxyWidgetPrivate::sendWidgetMouseEvent (this=0x9972ba8, event=0xbf9450fc) at graphicsview/qgraphicsproxywidget.cpp:284
#10 0x07c241e4 in QGraphicsItem::sceneEvent (this=0x9723ed0, event=0xbf9450fc) at graphicsview/qgraphicsitem.cpp:6669
#11 0x07c7b4d7 in QGraphicsWidget::sceneEvent (this=0x9723ec8, event=0xbf9450fc) at graphicsview/qgraphicswidget.cpp:1173
#12 0x07c3c569 in QGraphicsScenePrivate::sendEvent (this=0x857b808, item=0x9723ed0, event=0xbf9450fc) at graphicsview/qgraphicsscene.cpp:1211
#13 0x07c3e8b3 in QGraphicsScenePrivate::sendMouseEvent (this=0x857b808, mouseEvent=0xbf9450fc) at graphicsview/qgraphicsscene.cpp:1285
#14 0x07c42c94 in QGraphicsScene::mouseReleaseEvent (this=0x85cb8d8, mouseEvent=0xbf9450fc) at graphicsview/qgraphicsscene.cpp:4111
#15 0x07c574fc in QGraphicsScene::event (this=0x85cb8d8, event=0xbf9450fc) at graphicsview/qgraphicsscene.cpp:3444
#16 0x07571fdc in QApplicationPrivate::notify_helper (this=0x85209b0, receiver=0x85cb8d8, e=0xbf9450fc) at kernel/qapplication.cpp:4396
#17 0x0757804e in QApplication::notify (this=0x8516a98, receiver=0x85cb8d8, e=0xbf9450fc) at kernel/qapplication.cpp:3798
#18 0x011957da in KApplication::notify (this=0x8516a98, receiver=0x85cb8d8, event=0xbf9450fc) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x06012b3b in QCoreApplication::notifyInternal (this=0x8516a98, receiver=0x85cb8d8, event=0xbf9450fc) at kernel/qcoreapplication.cpp:732
#20 0x07571b9e in sendSpontaneousEvent (receiver=0x85cb8d8, event=0x854dab8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#21 qt_sendSpontaneousEvent (receiver=0x85cb8d8, event=0x854dab8) at kernel/qapplication.cpp:5388
#22 0x07c74965 in QGraphicsView::mouseReleaseEvent (this=0x8ccef08, event=0xbf945880) at graphicsview/qgraphicsview.cpp:3334
#23 0x075cfe08 in QWidget::event (this=0x8ccef08, event=0xbf945880) at kernel/qwidget.cpp:8187
#24 0x079f1763 in QFrame::event (this=0x8ccef08, e=0xbf945880) at widgets/qframe.cpp:557
#25 0x07a8ea82 in QAbstractScrollArea::viewportEvent (this=0x94ba690, e=0x854dab8) at widgets/qabstractscrollarea.cpp:1043
#26 0x07c72ccb in QGraphicsView::viewportEvent (this=0x8ccef08, event=0xbf945880) at graphicsview/qgraphicsview.cpp:2862
#27 0x07a914d5 in viewportEvent (this=0x8b80270, o=0x8a08ab8, e=0xbf945880) at widgets/qabstractscrollarea_p.h:100
#28 QAbstractScrollAreaFilter::eventFilter (this=0x8b80270, o=0x8a08ab8, e=0xbf945880) at widgets/qabstractscrollarea_p.h:116
#29 0x0601229a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x85209b0, receiver=0x8a08ab8, event=0xbf945880) at kernel/qcoreapplication.cpp:847
#30 0x07571fb9 in QApplicationPrivate::notify_helper (this=0x85209b0, receiver=0x8a08ab8, e=0xbf945880) at kernel/qapplication.cpp:4392
#31 0x07578c2e in QApplication::notify (this=0x8516a98, receiver=0x8a08ab8, e=0xbf945880) at kernel/qapplication.cpp:3959
#32 0x011957da in KApplication::notify (this=0x8516a98, receiver=0x8a08ab8, event=0xbf945880) at ../../kdeui/kernel/kapplication.cpp:311
#33 0x06012b3b in QCoreApplication::notifyInternal (this=0x8516a98, receiver=0x8a08ab8, event=0xbf945880) at kernel/qcoreapplication.cpp:732
#34 0x07577094 in sendEvent (receiver=0x8a08ab8, event=0xbf945880, alienWidget=0x8a08ab8, nativeWidget=0x8ccef08, buttonDown=0x7f0c3c0, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#35 QApplicationPrivate::sendMouseEvent (receiver=0x8a08ab8, event=0xbf945880, alienWidget=0x8a08ab8, nativeWidget=0x8ccef08, buttonDown=0x7f0c3c0, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3058
#36 0x07605d10 in QETWidget::translateMouseEvent (this=0x8ccef08, event=0xbf945d9c) at kernel/qapplication_x11.cpp:4403
#37 0x07605151 in QApplication::x11ProcessEvent (this=0x8516a98, event=0xbf945d9c) at kernel/qapplication_x11.cpp:3414
#38 0x0763436a in x11EventSourceDispatch (s=0x8523450, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#39 0x02c76855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#40 0x02c7a668 in ?? () from /lib/libglib-2.0.so.0
#41 0x02c7a848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#42 0x06041565 in QEventDispatcherGlib::processEvents (this=0x84e7ba0, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#43 0x07633be5 in QGuiEventDispatcherGlib::processEvents (this=0x84e7ba0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#44 0x06011609 in QEventLoop::processEvents (this=0xbf946090, flags=) at kernel/qeventloop.cpp:149
#45 0x06011a8a in QEventLoop::exec (this=0xbf946090, flags=...) at kernel/qeventloop.cpp:201
#46 0x07a3aefe in QMenu::exec (this=0xbf946108, p=..., action=0x0) at widgets/qmenu.cpp:2054
#47 0x009fce75 in Plasma::Containment::contextMenuEvent (this=0x86466d8, event=0xbf9467cc) at ../../plasma/containment.cpp:663
#48 0x07c241b8 in QGraphicsItem::sceneEvent (this=0x86466e0, event=0xbf9467cc) at graphicsview/qgraphicsitem.cpp:6639
#49 0x07c7b4d7 in QGraphicsWidget::sceneEvent (this=0x86466d8, event=0xbf9467cc) at graphicsview/qgraphicswidget.cpp:1173
#50 0x07c3c569 in QGraphicsScenePrivate::sendEvent (this=0x857b808, item=0x86466e0, event=0xbf9467cc) at graphicsview/qgraphicsscene.cpp:1211
#51 0x07c411b8 in QGraphicsScene::contextMenuEvent (this=0x85cb8d8, contextMenuEvent=0xbf9467cc) at graphicsview/qgraphicsscene.cpp:3600
#52 0x07c574cc in QGraphicsScene::event (this=0x85cb8d8, event=0xbf9467cc) at graphicsview/qgraphicsscene.cpp:3398
#53 0x07571fdc in QApplicationPrivate::notify_helper (this=0x85209b0, receiver=0x85cb8d8, e=0xbf9467cc) at kernel/qapplication.cpp:4396
#54 0x0757804e in QApplication::notify (this=0x8516a98, receiver=0x85cb8d8, e=0xbf9467cc) at kernel/qapplication.cpp:3798
#55 0x011957da in KApplication::notify (this=0x8516a98, receiver=0x85cb8d8, event=0xbf9467cc) at ../../kdeui/kernel/kapplication.cpp:311
#56 0x06012b3b in QCoreApplication::notifyInternal (this=0x8516a98, receiver=0x85cb8d8, event=0xbf9467cc) at kernel/qcoreapplication.cpp:732
#57 0x07c739f0 in sendEvent (this=0x8ccef08, event=0xbf946f28) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#58 QGraphicsView::contextMenuEvent (this=0x8ccef08, event=0xbf946f28) at graphicsview/qgraphicsview.cpp:2888
#59 0x075d0528 in QWidget::event (this=0x8ccef08, event=0xbf946f28) at kernel/qwidget.cpp:8354
#60 0x079f1763 in QFrame::event (this=0x8ccef08, e=0xbf946f28) at widgets/qframe.cpp:557
#61 0x07a8ea82 in QAbstractScrollArea::viewportEvent (this=0x94ba690, e=0x854dab8) at widgets/qabstractscrollarea.cpp:1043
#62 0x07c72ccb in QGraphicsView::viewportEvent (this=0x8ccef08, event=0xbf946f28) at graphicsview/qgraphicsview.cpp:2862
#63 0x07a914d5 in viewportEvent (this=0x8b80270, o=0x8a08ab8, e=0xbf946f28) at widgets/qabstractscrollarea_p.h:100
#64 QAbstractScrollAreaFilter::eventFilter (this=0x8b80270, o=0x8a08ab8, e=0xbf946f28) at widgets/qabstractscrollarea_p.h:116
#65 0x0601229a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x85209b0, receiver=0x8a08ab8, event=0xbf946f28) at kernel/qcoreapplication.cpp:847
#66 0x07571fb9 in QApplicationPrivate::notify_helper (this=0x85209b0, receiver=0x8a08ab8, e=0xbf946f28) at kernel/qapplication.cpp:4392
#67 0x07578458 in QApplication::notify (this=0x8516a98, receiver=0x8a08ab8, e=0xbf946f28) at kernel/qapplication.cpp:4038
#68 0x011957da in KApplication::notify (this=0x8516a98, receiver=0x8a08ab8, event=0xbf946f28) at ../../kdeui/kernel/kapplication.cpp:311
#69 0x06012b3b in QCoreApplication::notifyInternal (this=0x8516a98, receiver=0x8a08ab8, event=0xbf946f28) at kernel/qcoreapplication.cpp:732
#70 0x0760a62e in QCoreApplication::sendSpontaneousEvent (receiver=0x8a08ab8, event=0x854dab8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#71 0x07605d7c in QETWidget::translateMouseEvent (this=0x8ccef08, event=0xbf94741c) at kernel/qapplication_x11.cpp:4408
#72 0x07605151 in QApplication::x11ProcessEvent (this=0x8516a98, event=0xbf94741c) at kernel/qapplication_x11.cpp:3414
#73 0x0763436a in x11EventSourceDispatch (s=0x8523450, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#74 0x02c76855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#75 0x02c7a668 in ?? () from /lib/libglib-2.0.so.0
#76 0x02c7a848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#77 0x06041565 in QEventDispatcherGlib::processEvents (this=0x84e7ba0, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#78 0x07633be5 in QGuiEventDispatcherGlib::processEvents (this=0x84e7ba0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#79 0x06011609 in QEventLoop::processEvents (this=0xbf947714, flags=) at kernel/qeventloop.cpp:149
#80 0x06011a8a in QEventLoop::exec (this=0xbf947714, flags=...) at kernel/qeventloop.cpp:201
#81 0x0601600f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#82 0x07570e07 in QApplication::exec () at kernel/qapplication.cpp:3672
#83 0x00510f97 in kdemain (argc=1, argv=0xbf947924) at ../../../../plasma/desktop/shell/main.cpp:118
#84 0x080485bb in main (argc=1, argv=0xbf947924) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 267463, bug 261998, bug 261513, bug 258005, bug 257217.

Reported using DrKonqi