Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3) (Compiled from sources)
Qt Version: 4.8.0
Operating System: Linux 3.1.1-1.fc16.x86_64 x86_64
Distribution (Platform): Fedora RPMs

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

it happened everytime I want to make a new default panel.
can anyone help me please

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7fd3a4cd3840 (LWP 1551))]

Thread 2 (Thread 0x7fd389fe5700 (LWP 1775)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x00000035eeb84e52 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x35eee7e240) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00000035eeb84e89 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00000035cd007d90 in start_thread (arg=0x7fd389fe5700) at pthread_create.c:309
#4  0x00000035cc4eeddd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7fd3a4cd3840 (LWP 1551)):
[KCrash Handler]
#6  QGraphicsLayoutItemPrivate::hasHeightForWidth (this=0x740065006e002e) at graphicsview/qgraphicslayoutitem.cpp:280
#7  0x00000035da802e71 in QGridLayoutItem::hasDynamicConstraint (this=0x2da9220) at graphicsview/qgridlayoutengine.cpp:576
#8  0x00000035da803fd2 in ensureDynamicConstraint (this=0x2dc0510) at graphicsview/qgridlayoutengine.cpp:1666
#9  QGridLayoutEngine::ensureDynamicConstraint (this=0x2dc0510) at graphicsview/qgridlayoutengine.cpp:1661
#10 0x00000035da804089 in QGridLayoutEngine::hasDynamicConstraint (this=0x2dc0510) at graphicsview/qgridlayoutengine.cpp:1686
#11 0x00000035da807fd8 in QGridLayoutEngine::sizeHint (this=0x2dc0510, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1143
#12 0x00000035da791c6a in QGraphicsGridLayout::sizeHint (this=<optimized out>, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:670
#13 0x00000035da7bc6c9 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x2dc0400, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#14 0x00000035da7bcf71 in effectiveSizeHint (constraint=<optimized out>, which=<optimized out>, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:813
#15 QGraphicsLayoutItem::effectiveSizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:805
#16 0x00000035da7f98b1 in QGraphicsWidget::sizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicswidget.cpp:743
#17 0x00000035da7bc79f in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x2dc0310, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#18 0x00000035da7bcf71 in effectiveSizeHint (constraint=<optimized out>, which=<optimized out>, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:813
#19 QGraphicsLayoutItem::effectiveSizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:805
#20 0x00007fd3977c6af5 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0x2dbc100) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#21 0x00007fd3977c87c9 in SystemTray::TaskArea::addWidgetForTask (this=0x2dbc100, task=0x2da8d60) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#22 0x00007fd3977c8b16 in SystemTray::TaskArea::addTask (this=0x2dbc100, task=<optimized out>) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#23 0x00000035d798b7d1 in QMetaObject::activate (sender=0x1181af0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffffb753950) at kernel/qobject.cpp:3546
#24 0x00007fd3977abc9f in SystemTray::Manager::taskAdded (this=<optimized out>, _t1=0x2da8d60) at /usr/src/debug/kde-workspace-4.7.3/x86_64-redhat-linux-gnu/plasma/generic/applets/systemtray/manager.moc:113
#25 0x00007fd3977abeb5 in SystemTray::Manager::addTask (this=0x1181af0, task=0x2da8d60) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/core/manager.cpp:87
#26 0x00000035d798b7d1 in QMetaObject::activate (sender=0xf2eb40, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffffb753b00) at kernel/qobject.cpp:3546
#27 0x00007fd3977ac47f in SystemTray::Protocol::taskCreated (this=<optimized out>, _t1=0x2da8d60) at /usr/src/debug/kde-workspace-4.7.3/x86_64-redhat-linux-gnu/plasma/generic/applets/systemtray/protocol.moc:105
#28 0x00007fd3977b3568 in SystemTray::PlasmoidProtocol::addApplet (this=0xf2eb40, appletName=..., id=<optimized out>, parent=0x2dbb330) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#29 0x00007fd3977abaf6 in SystemTray::Manager::addApplet (this=<optimized out>, appletName=<optimized out>, parent=<optimized out>) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/core/manager.cpp:110
#30 0x00007fd3977bdbb0 in SystemTray::Applet::checkDefaultApplets (this=0x2dbb330) at /usr/src/debug/kde-workspace-4.7.3/plasma/generic/applets/systemtray/ui/applet.cpp:737
#31 0x00000035d79909e6 in QObject::event (this=0x2dbb330, e=<optimized out>) at kernel/qobject.cpp:1194
#32 0x00000035da7f9f1b in QGraphicsWidget::event (this=0x2dbb330, event=0x2d437e0) at graphicsview/qgraphicswidget.cpp:1461
#33 0x00000035da1c96f4 in notify_helper (e=0x2d437e0, receiver=0x2dbb330, this=0xc1d890) at kernel/qapplication.cpp:4518
#34 QApplicationPrivate::notify_helper (this=0xc1d890, receiver=0x2dbb330, e=0x2d437e0) at kernel/qapplication.cpp:4490
#35 0x00000035da1ce573 in QApplication::notify (this=0xc108f0, receiver=0x2dbb330, e=0x2d437e0) at kernel/qapplication.cpp:4379
#36 0x00007fd3a61be396 in KApplication::notify (this=0xc108f0, receiver=0x2dbb330, event=0x2d437e0) at /usr/src/debug/kdelibs-4.7.3/kdeui/kernel/kapplication.cpp:311
#37 0x00000035d7977b4c in QCoreApplication::notifyInternal (this=0xc108f0, receiver=0x2dbb330, event=0x2d437e0) at kernel/qcoreapplication.cpp:876
#38 0x00000035d797b5da in sendEvent (event=0x2d437e0, receiver=0x2dbb330) at kernel/qcoreapplication.h:231
#39 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xbba740) at kernel/qcoreapplication.cpp:1500
#40 0x00000035d79a6403 in sendPostedEvents () at kernel/qcoreapplication.h:236
#41 postEventSourceDispatch (s=0xc21530) at kernel/qeventdispatcher_glib.cpp:279
#42 0x00000035cc044a7d in g_main_dispatch (context=0xc21440) at gmain.c:2425
#43 g_main_context_dispatch (context=0xc21440) at gmain.c:2995
#44 0x00000035cc045278 in g_main_context_iterate (context=0xc21440, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3073
#45 0x00000035cc04544c in g_main_context_iteration (context=0xc21440, may_block=1) at gmain.c:3136
#46 0x00000035d79a682f in QEventDispatcherGlib::processEvents (this=0xbbbc00, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#47 0x00000035da26c43e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:207
#48 0x00000035d7976c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#49 0x00000035d7976ed7 in QEventLoop::exec (this=0x7ffffb7546e0, flags=...) at kernel/qeventloop.cpp:204
#50 0x00000035d797b8d5 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#51 0x00007fd3a89e5243 in kdemain (argc=1, argv=0x7ffffb754ac8) at /usr/src/debug/kde-workspace-4.7.3/plasma/desktop/shell/main.cpp:120
#52 0x00000035cc42169d in __libc_start_main (main=0x400850 <main(int, char**)>, argc=1, ubp_av=0x7ffffb754ac8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffffb754ab8) at libc-start.c:226
#53 0x0000000000400881 in _start ()

This bug may be a duplicate of or related to bug 286197.

Possible duplicates by query: bug 286802, bug 286242, bug 286197, bug 286195, bug 286181.

Reported using DrKonqi