[Bug 157476] plasma crashes on removing/adding plasmoids frequently

[Oliver Putz]

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http://bugs.kde.org/show_bug.cgi?id=157476         
Regnaron web de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |Regnaron web de



------- Additional Comments From Regnaron web de  2008-02-11 04:33 -------
Hm, I am not 100% sure, but I think I just experienced this bug (kdelibs r772899, kdebase r772956, no compositing). I added several widgets and then subsequently removed them until I only had the analog clock and the application launcher menu widget left. As I then removed the application launcher menu, plasma crashed with the following backtrace:

Application: Plasma Workspace (plasma), signal SIGSEGV
Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 0xb62736e0 (LWP 10344)]
[New Thread 0xb4b11b90 (LWP 10345)]
[KCrash handler]
#6  QTimer::stop (this=0x0) at kernel/qtimer.cpp:244
#7  0xb7e6533b in Plasma::AppletHandle::startFading (this=0x85ab348, 
    anim=Plasma::AppletHandle::FadeIn)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/libs/plasma/applethandle.cpp:619
#8  0xb7e7200b in Plasma::Containment::sceneEventFilter (this=0x8137a68, 
    watched=0x81e42c0, event=0xbfb7da10)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/libs/plasma/containment.cpp:831
#9  0xb700a34c in QGraphicsScenePrivate::filterEvent (this=0x8107d28, 
    item=0x81e42c0, event=0xbfb7da10) at graphicsview/qgraphicsscene.cpp:716
#10 0xb700a3a5 in QGraphicsScenePrivate::sendEvent (this=0x8107d28, 
    item=0x81e42c0, event=0xbfb7da10) at graphicsview/qgraphicsscene.cpp:728
#11 0xb700ae21 in QGraphicsScenePrivate::sendHoverEvent (this=0x8107d28, 
    type=QEvent::GraphicsSceneHoverEnter, item=0x81e42c0, 
    hoverEvent=0xbfb7db30) at graphicsview/qgraphicsscene.cpp:773
#12 0xb7010b01 in QGraphicsScenePrivate::dispatchHoverEvent (this=0x8107d28, 
    hoverEvent=0xbfb7db30) at graphicsview/qgraphicsscene.cpp:2901
#13 0xb7010ea4 in QGraphicsScene::event (this=0x8110f80, event=0xbfb7df80)
    at graphicsview/qgraphicsscene.cpp:2555
#14 0xb6a7ce8a in QApplicationPrivate::notify_helper (this=0x8075080, 
    receiver=0x8110f80, e=0xbfb7df80) at kernel/qapplication.cpp:3556
#15 0xb6a7e77a in QApplication::notify (this=0x8057118, receiver=0x8110f80, 
    e=0xbfb7df80) at kernel/qapplication.cpp:3115
#16 0xb7998763 in KApplication::notify (this=0x8057118, receiver=0x8110f80, 
    event=0xbfb7df80)
    at /var/tmp/portage/kde-base/kdelibs-9999.4/work/kdelibs-9999.4/kdeui/kernel/kapplication.cpp:311
#17 0xb73dbd7b in QCoreApplication::notifyInternal (this=0x8057118, 
    receiver=0x8110f80, event=0xbfb7df80) at kernel/qcoreapplication.cpp:530
#18 0xb7027753 in QGraphicsView::mouseMoveEvent (this=0x80ff908, 
    event=0xbfb7e6d4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:200
#19 0xb6acf7cf in QWidget::event (this=0x80ff908, event=0xbfb7e6d4)
    at kernel/qwidget.cpp:6123
#20 0xb6e12073 in QFrame::event (this=0x80ff908, e=0xbfb7e6d4)
    at widgets/qframe.cpp:655
#21 0xb6eaa7ec in QAbstractScrollArea::viewportEvent (this=0xbfb7d874, e=0x0)
    at widgets/qabstractscrollarea.cpp:924
#22 0xb70223a2 in QGraphicsView::viewportEvent (this=0x80ff908, 
    event=0xbfb7e6d4) at graphicsview/qgraphicsview.cpp:2338
#23 0xb6eac6b2 in QAbstractScrollAreaFilter::eventFilter (this=0x816b130, 
    o=0x8165ae8, e=0xbfb7e6d4) at widgets/qabstractscrollarea_p.h:93
#24 0xb6a7cd9b in QApplicationPrivate::notify_helper (this=0x8075080, 
    receiver=0x8165ae8, e=0xbfb7e6d4) at kernel/qapplication.cpp:3548
#25 0xb6a7ea2c in QApplication::notify (this=0x8057118, receiver=0x8165ae8, 
    e=0xbfb7e6d4) at kernel/qapplication.cpp:3255
#26 0xb7998763 in KApplication::notify (this=0x8057118, receiver=0x8165ae8, 
    event=0xbfb7e6d4)
    at /var/tmp/portage/kde-base/kdelibs-9999.4/work/kdelibs-9999.4/kdeui/kernel/kapplication.cpp:311
#27 0xb73dbd7b in QCoreApplication::notifyInternal (this=0x8057118, 
    receiver=0x8165ae8, event=0xbfb7e6d4) at kernel/qcoreapplication.cpp:530
#28 0xb6ae2628 in QETWidget::translateMouseEvent (this=0x8165ae8, 
    event=0xbfb7ea98)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:203
#29 0xb6ae0e8e in QApplication::x11ProcessEvent (this=0x8057118, 
    event=0xbfb7ea98) at kernel/qapplication_x11.cpp:2913
#30 0xb6b06c45 in QEventDispatcherX11::processEvents (this=0x8074a80, 
    flags= 0xbfb7eb84) at kernel/qeventdispatcher_x11.cpp:125
#31 0xb73db191 in QEventLoop::processEvents (this=0xbfb7ebf0, 
    flags= 0xbfb7ebb8) at kernel/qeventloop.cpp:140
#32 0xb73db29a in QEventLoop::exec (this=0xbfb7ebf0, flags= 0xbfb7ebf8)
    at kernel/qeventloop.cpp:186
#33 0xb73dd626 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:759
#34 0xb6a7c487 in QApplication::exec () at kernel/qapplication.cpp:3053
#35 0xb7f59d54 in kdemain (argc=1, argv=0xbfb7edf4)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase-9999.4/workspace/plasma/plasma/main.cpp:54
#36 0x080487e2 in main (argc=138759800, argv=0x8436b68)
    at /var/tmp/portage/kde-base/kdebase-9999.4/work/kdebase_build/workspace/plasma/plasma/plasma-qgv_dummy.cpp:3
#37 0xb6505fdc in __libc_start_main (main=0x80487c0 <main>, argc=1, 
    ubp_av=0xbfb7edf4, init=0x8048810 <__libc_csu_init>, 
    fini=0x8048800 <__libc_csu_fini>, rtld_fini=0xb7f74100 <_dl_fini>, 
    stack_end=0xbfb7edec) at libc-start.c:229
#38 0x08048731 in _start ()
#0  0xffffe410 in __kernel_vsyscall ()