Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2) "release 5"
Qt Version: 4.7.4
Operating System: Linux 3.1.9-1.4-desktop x86_64
Distribution: "openSUSE 12.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
I was clcking on an icon on tool bar
- Unusual behavior I noticed:
the whole tool bar concerning icons of applications was glutted on the mouse, and moved right and left as the mouse was moving, then disapeared : So, no icons representing actives applications (firefox, libreoffice...and so on) were no more visibles.
The clock icon and other system icons, previously staying on the right of the tool bar, moved to the left of the toolbar, as occuping the empty space left by the disparition of application icons.
Rebooting the system made nothing : No more application icions are visible, though they are still runing (as show "ps -edf|grep libreoffice" on a terminal

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7ff14fe9a760 (LWP 1780))]

Thread 3 (Thread 0x7ff12d857700 (LWP 1781)):
#0  0x00007ff14d50cff3 in poll () from /lib64/libc.so.6
#1  0x00007ff14a300a98 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ff14a300f59 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff14eb1e586 in QEventDispatcherGlib::processEvents (this=0x7ff1280008c0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007ff14eaf2a32 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007ff14eaf2c2f in QEventLoop::exec (this=0x7ff12d856df0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007ff14ea0a5df in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007ff14ead5aff in QInotifyFileSystemWatcherEngine::run (this=0xf88bf0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007ff14ea0d025 in QThreadPrivate::start (arg=0xf88bf0) at thread/qthread_unix.cpp:331
#9  0x00007ff14e77cf05 in start_thread () from /lib64/libpthread.so.0
#10 0x00007ff14d51610d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7ff126df6700 (LWP 2489)):
#0  0x00007ff14e780e6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff1435c5852 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7ff1438bde80) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007ff1435c5889 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007ff14e77cf05 in start_thread () from /lib64/libpthread.so.0
#4  0x00007ff14d51610d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7ff14fe9a760 (LWP 1780)):
[KCrash Handler]
#6  QGraphicsLayoutItemPrivate::hasHeightForWidth (this=0x0) at graphicsview/qgraphicslayoutitem.cpp:280
#7  0x00007ff14e2c8021 in QGridLayoutItem::hasDynamicConstraint (this=<optimized out>) at graphicsview/qgridlayoutengine.cpp:576
#8  0x00007ff14e2c9132 in ensureDynamicConstraint (this=0x179baf0) at graphicsview/qgridlayoutengine.cpp:1657
#9  QGridLayoutEngine::ensureDynamicConstraint (this=0x179baf0) at graphicsview/qgridlayoutengine.cpp:1652
#10 0x00007ff14e2c91e9 in QGridLayoutEngine::hasDynamicConstraint (this=0x179baf0) at graphicsview/qgridlayoutengine.cpp:1677
#11 0x00007ff14e2cd598 in QGridLayoutEngine::sizeHint (this=0x179baf0, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#12 0x00007ff14e256dca in QGraphicsGridLayout::sizeHint (this=<optimized out>, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#13 0x00007ff14e28187a in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x179b9e0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#14 0x00007ff14e282131 in effectiveSizeHint (constraint=<optimized out>, which=<optimized out>, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#15 QGraphicsLayoutItem::effectiveSizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:810
#16 0x00007ff14e2becb1 in QGraphicsWidget::sizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicswidget.cpp:743
#17 0x00007ff14e281950 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x179b8f0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#18 0x00007ff14e282131 in effectiveSizeHint (constraint=<optimized out>, which=<optimized out>, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#19 QGraphicsLayoutItem::effectiveSizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:810
#20 0x00007ff1347c9e45 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0x17978c0) at /usr/src/debug/kde-workspace-4.7.2/plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#21 0x00007ff1347cbb19 in SystemTray::TaskArea::addWidgetForTask (this=0x17978c0, task=0x1876670) at /usr/src/debug/kde-workspace-4.7.2/plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#22 0x00007ff1347cbe66 in SystemTray::TaskArea::addTask (this=0x17978c0, task=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#23 0x00007ff1347cc664 in SystemTray::TaskArea::qt_metacall (this=0x17978c0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff9f8dbaa0) at /usr/src/debug/kde-workspace-4.7.2/build/plasma/generic/applets/systemtray/taskarea.moc:89
#24 0x00007ff14eb065aa in QMetaObject::activate (sender=0xcb6920, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff9f8dbaa0) at kernel/qobject.cpp:3287
#25 0x00007ff1347aee4f in SystemTray::Manager::taskAdded (this=<optimized out>, _t1=0x1876670) at /usr/src/debug/kde-workspace-4.7.2/build/plasma/generic/applets/systemtray/manager.moc:99
#26 0x00007ff1347af065 in SystemTray::Manager::addTask (this=0xcb6920, task=0x1876670) at /usr/src/debug/kde-workspace-4.7.2/plasma/generic/applets/systemtray/core/manager.cpp:87
#27 0x00007ff1347af1b4 in SystemTray::Manager::qt_metacall (this=0xcb6920, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fff9f8dbc10) at /usr/src/debug/kde-workspace-4.7.2/build/plasma/generic/applets/systemtray/manager.moc:86
#28 0x00007ff14eb065aa in QMetaObject::activate (sender=0xcae110, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff9f8dbc10) at kernel/qobject.cpp:3287
#29 0x00007ff1347af65f in SystemTray::Protocol::taskCreated (this=<optimized out>, _t1=0x1876670) at /usr/src/debug/kde-workspace-4.7.2/build/plasma/generic/applets/systemtray/protocol.moc:91
#30 0x00007ff1347b6748 in SystemTray::PlasmoidProtocol::addApplet (this=0xcae110, appletName=..., id=<optimized out>, parent=0x1796780) at /usr/src/debug/kde-workspace-4.7.2/plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#31 0x00007ff1347aeca6 in SystemTray::Manager::addApplet (this=<optimized out>, appletName=<optimized out>, parent=<optimized out>) at /usr/src/debug/kde-workspace-4.7.2/plasma/generic/applets/systemtray/core/manager.cpp:110
#32 0x00007ff1347c0d70 in SystemTray::Applet::checkDefaultApplets (this=0x1796780) at /usr/src/debug/kde-workspace-4.7.2/plasma/generic/applets/systemtray/ui/applet.cpp:737
#33 0x00007ff1347c1f8c in SystemTray::Applet::qt_metacall (this=0x1796780, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x17b4030) at /usr/src/debug/kde-workspace-4.7.2/build/plasma/generic/applets/systemtray/applet.moc:91
#34 0x00007ff14eb0a15a in QObject::event (this=0x1796780, e=<optimized out>) at kernel/qobject.cpp:1226
#35 0x00007ff14e2bf31b in QGraphicsWidget::event (this=0x1796780, event=0x17b5800) at graphicsview/qgraphicswidget.cpp:1455
#36 0x00007ff14dca5c34 in notify_helper (e=0x17b5800, receiver=0x1796780, this=0x6e6f40) at kernel/qapplication.cpp:4481
#37 QApplicationPrivate::notify_helper (this=0x6e6f40, receiver=0x1796780, e=0x17b5800) at kernel/qapplication.cpp:4453
#38 0x00007ff14dcaaac1 in QApplication::notify (this=0x6d8390, receiver=0x1796780, e=0x17b5800) at kernel/qapplication.cpp:4360
#39 0x00007ff14f885e36 in KApplication::notify (this=0x6d8390, receiver=0x1796780, event=0x17b5800) at /usr/src/debug/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#40 0x00007ff14eaf382c in QCoreApplication::notifyInternal (this=0x6d8390, receiver=0x1796780, event=0x17b5800) at kernel/qcoreapplication.cpp:787
#41 0x00007ff14eaf6c08 in sendEvent (event=0x17b5800, receiver=0x1796780) at kernel/qcoreapplication.h:215
#42 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x615800) at kernel/qcoreapplication.cpp:1428
#43 0x00007ff14eb1e0c3 in sendPostedEvents () at kernel/qcoreapplication.h:220
#44 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#45 0x00007ff14a30058d in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#46 0x00007ff14a300d88 in ?? () from /usr/lib64/libglib-2.0.so.0
#47 0x00007ff14a300f59 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#48 0x00007ff14eb1e51f in QEventDispatcherGlib::processEvents (this=0x6e4730, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#49 0x00007ff14dd48f9e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#50 0x00007ff14eaf2a32 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#51 0x00007ff14eaf2c2f in QEventLoop::exec (this=0x7fff9f8dc810, flags=...) at kernel/qeventloop.cpp:201
#52 0x00007ff14eaf6df7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#53 0x00007ff13d64a773 in kdemain (argc=1, argv=0x670b50) at /usr/src/debug/kde-workspace-4.7.2/plasma/desktop/shell/main.cpp:120
#54 0x0000000000408897 in _start ()

Possible duplicates by query: bug 297984, bug 297268, bug 296168, bug 294899, bug 294171.

Reported using DrKonqi