Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3) "release 10"
Qt Version: 4.7.4
Operating System: Linux 2.6.37.6-0.7-desktop x86_64
Distribution: "openSUSE 11.4 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:

After upgrading to KDE 4.7.3, plasma crashed. I logged out and back in and found myself without my panel. Now, each time I try to add the default panel, I get a crash. I can add the empty panel fine (but if I try to add the system tray widget to it, I get a crash every time).

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fa36b5f3760 (LWP 12628))]

Thread 3 (Thread 0x7fa34ad1f700 (LWP 12629)):
#0  0x00007fa368c7c4f3 in poll () from /lib64/libc.so.6
#1  0x00007fa365aaa114 in ?? () from /lib64/libglib-2.0.so.0
#2  0x00007fa365aaa650 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007fa36a27a636 in QEventDispatcherGlib::processEvents (this=0x11ee750, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fa36a24ec22 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fa36a24ee35 in QEventLoop::exec (this=0x7fa34ad1ede0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fa36a163be4 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:498
#7  0x00007fa36a230358 in QInotifyFileSystemWatcherEngine::run (this=0x11e6300) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fa36a1664d5 in QThreadPrivate::start (arg=0x11e6300) at thread/qthread_unix.cpp:331
#9  0x00007fa369ed5a3f in start_thread () from /lib64/libpthread.so.0
#10 0x00007fa368c8566d in clone () from /lib64/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fa342d9c700 (LWP 20874)):
#0  0x00007fa369eda38c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fa35f339174 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7fa35f653180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007fa35f3391a9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7fa35f661254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007fa369ed5a3f in start_thread () from /lib64/libpthread.so.0
#4  0x00007fa368c8566d in clone () from /lib64/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa36b5f3760 (LWP 12628)):
[KCrash Handler]
#6  0x00007fa3699d6185 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x1bc4ba0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#7  0x00007fa3699d6ab1 in QGraphicsLayoutItem::effectiveSizeHint (this=<value optimized out>, which=<value optimized out>, constraint=<value optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#8  0x00007fa369a1d8f3 in QGridLayoutItem::effectiveMaxSize (this=0x1b52600, constraint=...) at graphicsview/qgridlayoutengine.cpp:742
#9  0x00007fa369a1def2 in QGridLayoutItem::geometryWithin (this=0x1b52600, x=0, y=0, width=3.4028234663852886e+38, height=24, rowDescent=-1) at graphicsview/qgridlayoutengine.cpp:657
#10 0x00007fa369a20bef in QGridLayoutEngine::fillRowData (this=0x1bbf750, rowData=0x1bbf878, styleInfo=..., colPositions=0x0, colSizes=0x0, orientation=Qt::Vertical) at graphicsview/qgridlayoutengine.cpp:1579
#11 0x00007fa369a21773 in QGridLayoutEngine::ensureColumnAndRowData (this=<value optimized out>, rowData=0x1bbf878, totalBox=0x7fffd348f128, styleInfo=..., colPositions=<value optimized out>, colSizes=<value optimized out>, orientation=Qt::Vertical) at graphicsview/qgridlayoutengine.cpp:1641
#12 0x00007fa369a2255b in QGridLayoutEngine::sizeHint (this=0x1bbf750, styleInfo=..., which=Qt::MaximumSize, constraint=<value optimized out>) at graphicsview/qgridlayoutengine.cpp:1179
#13 0x00007fa3699aad6a in QGraphicsGridLayout::sizeHint (this=<value optimized out>, which=Qt::MaximumSize, constraint=<value optimized out>) at graphicsview/qgraphicsgridlayout.cpp:656
#14 0x00007fa3699d6188 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x1bbf640, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#15 0x00007fa3699d6ab1 in QGraphicsLayoutItem::effectiveSizeHint (this=<value optimized out>, which=<value optimized out>, constraint=<value optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#16 0x00007fa369a141a1 in QGraphicsWidget::sizeHint (this=<value optimized out>, which=<value optimized out>, constraint=<value optimized out>) at graphicsview/qgraphicswidget.cpp:743
#17 0x00007fa3699d6276 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x1bbf550, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#18 0x00007fa3699d6ab1 in QGraphicsLayoutItem::effectiveSizeHint (this=<value optimized out>, which=<value optimized out>, constraint=<value optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#19 0x00007fa3524fc955 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0x1bbb470) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#20 0x00007fa3524fe52f in SystemTray::TaskArea::addWidgetForTask (this=0x1bbb470, task=<value optimized out>) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#21 0x00007fa3524feaa6 in SystemTray::TaskArea::addTask (this=0x1bbb470, task=<value optimized out>) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#22 0x00007fa3524ff034 in SystemTray::TaskArea::qt_metacall (this=0x1bbb470, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd348f7f0) at /usr/src/debug/kde-workspace-4.7.3/build/plasma/generic/applets/systemtray/taskarea.moc:89
#23 0x00007fa36a263e8f in QMetaObject::activate (sender=0xd336c0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffd348f7f0) at kernel/qobject.cpp:3287
#24 0x00007fa3524e1daf in SystemTray::Manager::taskAdded (this=<value optimized out>, _t1=0x1d7b920) at /usr/src/debug/kde-workspace-4.7.3/build/plasma/generic/applets/systemtray/manager.moc:99
#25 0x00007fa3524e1f33 in SystemTray::Manager::addTask (this=0xd336c0, task=0x1d7b920) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/core/manager.cpp:87
#26 0x00007fa3524e20f4 in SystemTray::Manager::qt_metacall (this=0xd336c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd348f9a0) at /usr/src/debug/kde-workspace-4.7.3/build/plasma/generic/applets/systemtray/manager.moc:86
#27 0x00007fa36a263e8f in QMetaObject::activate (sender=0xcd7b80, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffd348f9a0) at kernel/qobject.cpp:3287
#28 0x00007fa3524e272f in SystemTray::Protocol::taskCreated (this=<value optimized out>, _t1=0x1d7b920) at /usr/src/debug/kde-workspace-4.7.3/build/plasma/generic/applets/systemtray/protocol.moc:91
#29 0x00007fa3524e9ee5 in SystemTray::PlasmoidProtocol::addApplet (this=0xcd7b80, appletName=..., id=<value optimized out>, parent=0x1b38e70) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#30 0x00007fa3524e1c06 in SystemTray::Manager::addApplet (this=<value optimized out>, appletName=<value optimized out>, parent=<value optimized out>) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/core/manager.cpp:110
#31 0x00007fa3524f3b70 in SystemTray::Applet::checkDefaultApplets (this=0x1b38e70) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/ui/applet.cpp:737
#32 0x00007fa3524f4f4c in SystemTray::Applet::qt_metacall (this=0x1b38e70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x1b4ca60) at /usr/src/debug/kde-workspace-4.7.3/build/plasma/generic/applets/systemtray/applet.moc:91
#33 0x00007fa36a2637aa in QObject::event (this=0x1b38e70, e=<value optimized out>) at kernel/qobject.cpp:1226
#34 0x00007fa369a1487b in QGraphicsWidget::event (this=0x1b38e70, event=0x1b5fc90) at graphicsview/qgraphicswidget.cpp:1455
#35 0x00007fa3693f5264 in QApplicationPrivate::notify_helper (this=0x6c8bd0, receiver=0x1b38e70, e=0x1b5fc90) at kernel/qapplication.cpp:4481
#36 0x00007fa3693fd81a in QApplication::notify (this=<value optimized out>, receiver=0x1b38e70, e=0x1b5fc90) at kernel/qapplication.cpp:4360
#37 0x00007fa36afdaae6 in KApplication::notify (this=0x6b5460, receiver=0x1b38e70, event=0x1b5fc90) at /usr/src/debug/kdelibs-4.7.3/kdeui/kernel/kapplication.cpp:311
#38 0x00007fa36a24f7cc in QCoreApplication::notifyInternal (this=0x6b5460, receiver=0x1b38e70, event=0x1b5fc90) at kernel/qcoreapplication.cpp:787
#39 0x00007fa36a252fc5 in sendEvent (receiver=0x0, event_type=0, data=0x615a70) at kernel/qcoreapplication.h:215
#40 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x615a70) at kernel/qcoreapplication.cpp:1428
#41 0x00007fa36a27a443 in sendPostedEvents (s=<value optimized out>) at kernel/qcoreapplication.h:220
#42 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#43 0x00007fa365aa9bd3 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#44 0x00007fa365aaa3b0 in ?? () from /lib64/libglib-2.0.so.0
#45 0x00007fa365aaa650 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#46 0x00007fa36a27a5df in QEventDispatcherGlib::processEvents (this=0x6c6cb0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#47 0x00007fa36949b1ae in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#48 0x00007fa36a24ec22 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#49 0x00007fa36a24ee35 in QEventLoop::exec (this=0x7fffd3490640, flags=...) at kernel/qeventloop.cpp:201
#50 0x00007fa36a25327b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#51 0x00007fa35ac5325d in kdemain (argc=1, argv=0x673a20) at /usr/src/debug/kde-workspace-4.7.3/plasma/desktop/shell/main.cpp:120
#52 0x0000000000407279 in _start ()

Reported using DrKonqi