Application: plasma-desktop (0.3)
KDE Platform Version: 4.3.95 (KDE 4.3.95 (KDE 4.4 RC2))
Qt Version: 4.6.0
Operating System: Linux 2.6.31-18-generic i686
Distribution: Ubuntu 9.10

-- Information about the crash:
Plasma crashes in black screen when I create a new activity desktop, zoom out activities and delete the new activity.

The crash can be reproduced every time.

 -- Backtrace:
Application: Spazio di lavoro di Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb76f2760 (LWP 2190))]

Thread 2 (Thread 0xac308b70 (LWP 2192)):
#0  0x00b63422 in __kernel_vsyscall ()
#1  0x00379e15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x008a8307 in QWaitConditionPrivate::wait (this=0xa8cee68, mutex=0xa8cee64, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#3  QWaitCondition::wait (this=0xa8cee68, mutex=0xa8cee64, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#4  0x01295102 in QHostInfoAgent::run (this=0xa8cee58) at kernel/qhostinfo.cpp:252
#5  0x008a73ae in QThreadPrivate::start (arg=0xa8cee58) at thread/qthread_unix.cpp:244
#6  0x0037580e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x00c308de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb76f2760 (LWP 2190)):
[KCrash Handler]
#6  0x0732f916 in QGraphicsSceneIndexPrivate::recursive_items_helper (this=0xa073638, item=0xb2b8668, exposeRect=..., intersector=0xa0b75b0, items=0xbfcd540c, viewTransform=..., 
    mode=Qt::IntersectsItemShape, parentOpacity=1) at graphicsview/qgraphicssceneindex.cpp:278
#7  0x07330aae in QGraphicsSceneIndexPrivate::items_helper (this=0xa079038, rect=..., mode=Qt::IntersectsItemShape, order=Qt::DescendingOrder, deviceTransform=...)
    at graphicsview/qgraphicssceneindex_p.h:159
#8  QGraphicsSceneIndex::items (this=0xa079038, rect=..., mode=Qt::IntersectsItemShape, order=Qt::DescendingOrder, deviceTransform=...) at graphicsview/qgraphicssceneindex.cpp:457
#9  0x0730531b in QGraphicsScene::items (this=0xa0891d0, rect=..., mode=Qt::IntersectsItemShape, order=Qt::DescendingOrder, deviceTransform=...) at graphicsview/qgraphicsscene.cpp:2024
#10 0x0730ca55 in QGraphicsScenePrivate::itemsAtPosition (this=0xa07c9b0, screenPos=..., scenePos=..., widget=0xaa48900) at graphicsview/qgraphicsscene.cpp:1023
#11 0x0730cf20 in QGraphicsScenePrivate::dispatchHoverEvent (this=0xa07c9b0, hoverEvent=0xbfcd545c) at graphicsview/qgraphicsscene.cpp:3768
#12 0x0730d1d8 in QGraphicsScene::mouseMoveEvent (this=0xa0891d0, mouseEvent=0xbfcd5974) at graphicsview/qgraphicsscene.cpp:3976
#13 0x0731c3cd in QGraphicsScene::event (this=0xa0891d0, event=0xbfcd5974) at graphicsview/qgraphicsscene.cpp:3341
#14 0x06c7719c in QApplicationPrivate::notify_helper (this=0xa01c5c0, receiver=0xa0891d0, e=0xbfcd5974) at kernel/qapplication.cpp:4242
#15 0x06c7ddf7 in QApplication::notify (this=0xa016518, receiver=0xa0891d0, e=0xbfcd5974) at kernel/qapplication.cpp:3661
#16 0x0103da1a in KApplication::notify (this=0xa016518, receiver=0xa0891d0, event=0xbfcd5974) at ../../kdeui/kernel/kapplication.cpp:302
#17 0x009a8eab in QCoreApplication::notifyInternal (this=0xa016518, receiver=0xa0891d0, event=0xbfcd5974) at kernel/qcoreapplication.cpp:704
#18 0x06c7807e in QCoreApplication::sendSpontaneousEvent (receiver=0xa0891d0, event=0x0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#19 qt_sendSpontaneousEvent (receiver=0xa0891d0, event=0x0) at kernel/qapplication.cpp:5219
#20 0x0733c852 in QGraphicsViewPrivate::mouseMoveEventHandler (this=0xaa37038, event=0xbfcd6140) at graphicsview/qgraphicsview.cpp:617
#21 0x0733ca96 in QGraphicsView::mouseMoveEvent (this=0xaa37b28, event=0xbfcd6140) at graphicsview/qgraphicsview.cpp:3157
#22 0x06cd3fd6 in QWidget::event (this=0xaa37b28, event=0xbfcd6140) at kernel/qwidget.cpp:7959
#23 0x070cd433 in QFrame::event (this=0xaa37b28, e=0xbfcd6140) at widgets/qframe.cpp:557
#24 0x07166cf2 in QAbstractScrollArea::viewportEvent (this=0xa073638, e=0x0) at widgets/qabstractscrollarea.cpp:1032
#25 0x0733a39b in QGraphicsView::viewportEvent (this=0xaa37b28, event=0xbfcd6140) at graphicsview/qgraphicsview.cpp:2747
#26 0x071695e5 in QAbstractScrollAreaPrivate::viewportEvent (this=0xaa48750, o=0xaa48900, e=0xbfcd6140) at widgets/qabstractscrollarea_p.h:100
#27 QAbstractScrollAreaFilter::eventFilter (this=0xaa48750, o=0xaa48900, e=0xbfcd6140) at widgets/qabstractscrollarea_p.h:116
#28 0x009a814a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0xa01c5c0, receiver=0xaa48900, event=0xbfcd6140) at kernel/qcoreapplication.cpp:819
#29 0x06c77179 in QApplicationPrivate::notify_helper (this=0xa01c5c0, receiver=0xaa48900, e=0xbfcd6140) at kernel/qapplication.cpp:4238
#30 0x06c7e76b in QApplication::notify (this=0xa016518, receiver=0xaa48900, e=0xbfcd6140) at kernel/qapplication.cpp:3822
#31 0x0103da1a in KApplication::notify (this=0xa016518, receiver=0xaa48900, event=0xbfcd6140) at ../../kdeui/kernel/kapplication.cpp:302
#32 0x009a8eab in QCoreApplication::notifyInternal (this=0xa016518, receiver=0xaa48900, event=0xbfcd6140) at kernel/qcoreapplication.cpp:704
#33 0x06c7d71f in QCoreApplication::sendEvent (receiver=0xaa48900, event=0xbfcd6140, alienWidget=0x0, nativeWidget=0xaa48900, buttonDown=0x75b2060, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#34 QApplicationPrivate::sendMouseEvent (receiver=0xaa48900, event=0xbfcd6140, alienWidget=0x0, nativeWidget=0xaa48900, buttonDown=0x75b2060, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2956
#35 0x06d06d18 in QETWidget::translateMouseEvent (this=0xaa48900, event=0xbfcd665c) at kernel/qapplication_x11.cpp:4368
#36 0x06d05d14 in QApplication::x11ProcessEvent (this=0xa016518, event=0xbfcd665c) at kernel/qapplication_x11.cpp:3501
#37 0x06d3504a in x11EventSourceDispatch (s=0xa01e6c0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#38 0x0766ee88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#39 0x07672730 in ?? () from /lib/libglib-2.0.so.0
#40 0x07672863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#41 0x009d4bd5 in QEventDispatcherGlib::processEvents (this=0xa01c3b0, flags=...) at kernel/qeventdispatcher_glib.cpp:407
#42 0x06d34b75 in QGuiEventDispatcherGlib::processEvents (this=0xa01c3b0, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#43 0x009a74c9 in QEventLoop::processEvents (this=0xbfcd6954, flags=) at kernel/qeventloop.cpp:149
#44 0x009a791a in QEventLoop::exec (this=0xbfcd6954, flags=...) at kernel/qeventloop.cpp:201
#45 0x009abb0f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#46 0x06c77237 in QApplication::exec () at kernel/qapplication.cpp:3570
#47 0x07ae31ee in kdemain (argc=1, argv=0xa009330) at ../../../../plasma/desktop/shell/main.cpp:112
#48 0x0804dff7 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x9febd88 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051429 "0") at ../../kinit/kinit.cpp:706
#49 0x0804ec15 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1198
#50 0x0804f08c in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1391
#51 0x0804fe27 in main (argc=4, argv=0xbfcd7404, envp=0xbfcd7418) at ../../kinit/kinit.cpp:1830

Possible duplicates by query: bug 224249, bug 224166, bug 223580, bug 222905, bug 222293.

Reported using DrKonqi