Version:           unspecified (using KDE 4.7.3) 
OS:                Linux




Reproducible: Always

Steps to Reproduce:
right click desktop -> add panel -> default panel

Actual Results:  
plasma crashes

Expected Results:  
default panel gets added

Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fe8e21cf7a0 (LWP 3002))]

Thread 4 (Thread 0x7fe8c15db700 (LWP 3003)):
#0  0x00007fe8e1aab773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fe8d6035f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe8d6036429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe8dec9cf3e in QEventDispatcherGlib::processEvents (this=0x1f4d150, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fe8dec70cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fe8dec70ef7 in QEventLoop::exec (this=0x7fe8c15dadb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fe8deb8827f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fe8dec53cbf in QInotifyFileSystemWatcherEngine::run (this=0x1f37ad0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fe8deb8ad05 in QThreadPrivate::start (arg=0x1f37ad0) at thread/qthread_unix.cpp:331
#9  0x00007fe8d6b42efc in start_thread (arg=0x7fe8c15db700) at pthread_create.c:304
#10 0x00007fe8e1ab789d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fe8baa18700 (LWP 3004)):                                                                                                                                                                                                                                   
#0  __GI___poll (fds=0x20fefa0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:85                                                                                                                                                                                    
#1  0x00007fe8d6035f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0                                                                                                                                                                                                    
#2  0x00007fe8d6036429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0                                                                                                                                                                              
#3  0x00007fe8dec9cf3e in QEventDispatcherGlib::processEvents (this=0x20fd3f0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424                                                                                                                                  
#4  0x00007fe8dec70cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149                                                                                                                                                             
#5  0x00007fe8dec70ef7 in QEventLoop::exec (this=0x7fe8baa17db0, flags=...) at kernel/qeventloop.cpp:201                                                                                                                                                                       
#6  0x00007fe8deb8827f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fe8dec53cbf in QInotifyFileSystemWatcherEngine::run (this=0x20fc7f0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fe8deb8ad05 in QThreadPrivate::start (arg=0x20fc7f0) at thread/qthread_unix.cpp:331
#9  0x00007fe8d6b42efc in start_thread (arg=0x7fe8baa18700) at pthread_create.c:304
#10 0x00007fe8e1ab789d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fe8b5e70700 (LWP 3148)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe8dbca1fe2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fe8dbca2019 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fe8d6b42efc in start_thread (arg=0x7fe8b5e70700) at pthread_create.c:304
#4  0x00007fe8e1ab789d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe8e21cf7a0 (LWP 3002)):
[KCrash Handler]
#6  QGraphicsLayoutItemPrivate::hasHeightForWidth (this=0x740065006e002e) at graphicsview/qgraphicslayoutitem.cpp:280
#7  0x00007fe8de649591 in QGridLayoutItem::hasDynamicConstraint (this=<optimized out>) at graphicsview/qgridlayoutengine.cpp:576
#8  0x00007fe8de64a6b2 in ensureDynamicConstraint (this=0x34cd470) at graphicsview/qgridlayoutengine.cpp:1657
#9  QGridLayoutEngine::ensureDynamicConstraint (this=0x34cd470) at graphicsview/qgridlayoutengine.cpp:1652
#10 0x00007fe8de64a769 in QGridLayoutEngine::hasDynamicConstraint (this=0x34cd470) at graphicsview/qgridlayoutengine.cpp:1677
#11 0x00007fe8de64ea98 in QGridLayoutEngine::sizeHint (this=0x34cd470, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#12 0x00007fe8de5d801a in QGraphicsGridLayout::sizeHint (this=<optimized out>, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#13 0x00007fe8de602bd9 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x34cd360, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#14 0x00007fe8de603491 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 0x00007fe8de640231 in QGraphicsWidget::sizeHint (this=<optimized out>, which=<optimized out>, constraint=<optimized out>) at graphicsview/qgraphicswidget.cpp:743
#17 0x00007fe8de602caf in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x34cd270, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#18 0x00007fe8de603491 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 0x00007fe8c88a1905 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0x3507650) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#21 0x00007fe8c88a35d9 in SystemTray::TaskArea::addWidgetForTask (this=0x3507650, task=0x44715b0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#22 0x00007fe8c88a3926 in SystemTray::TaskArea::addTask (this=0x3507650, task=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#23 0x00007fe8c88a4124 in SystemTray::TaskArea::qt_metacall (this=0x3507650, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffb2e090d0) at ./taskarea.moc:89
#24 0x00007fe8dec84eba in QMetaObject::activate (sender=0x1a98b20, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffb2e090d0) at kernel/qobject.cpp:3278
#25 0x00007fe8c888687f in SystemTray::Manager::taskAdded (this=<optimized out>, _t1=0x44715b0) at ./manager.moc:99
#26 0x00007fe8c8886a95 in SystemTray::Manager::addTask (this=0x1a98b20, task=0x44715b0) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:87
#27 0x00007fe8c8886be4 in SystemTray::Manager::qt_metacall (this=0x1a98b20, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x7fffb2e09240) at ./manager.moc:86
#28 0x00007fe8dec84eba in QMetaObject::activate (sender=0x1adac80, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffb2e09240) at kernel/qobject.cpp:3278
#29 0x00007fe8c888708f in SystemTray::Protocol::taskCreated (this=<optimized out>, _t1=0x44715b0) at ./protocol.moc:91
#30 0x00007fe8c888e178 in SystemTray::PlasmoidProtocol::addApplet (this=0x1adac80, appletName=..., id=<optimized out>, parent=0x3a06f20) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#31 0x00007fe8c88866d6 in SystemTray::Manager::addApplet (this=<optimized out>, appletName=<optimized out>, parent=<optimized out>) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:110
#32 0x00007fe8c8898a30 in SystemTray::Applet::checkDefaultApplets (this=0x3a06f20) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:737
#33 0x00007fe8c8899a4c in SystemTray::Applet::qt_metacall (this=0x3a06f20, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0x350ca40) at ./applet.moc:91
#34 0x00007fe8dec88a5e in QObject::event (this=0x3a06f20, e=<optimized out>) at kernel/qobject.cpp:1217
#35 0x00007fe8de64089b in QGraphicsWidget::event (this=0x3a06f20, event=0x34e47f0) at graphicsview/qgraphicswidget.cpp:1455
#36 0x00007fe8de022424 in notify_helper (e=0x34e47f0, receiver=0x3a06f20, this=0x17fc030) at kernel/qapplication.cpp:4486
#37 QApplicationPrivate::notify_helper (this=0x17fc030, receiver=0x3a06f20, e=0x34e47f0) at kernel/qapplication.cpp:4458
#38 0x00007fe8de027291 in QApplication::notify (this=0x17ec0c0, receiver=0x3a06f20, e=0x34e47f0) at kernel/qapplication.cpp:4365
#39 0x00007fe8df920126 in KApplication::notify (this=0x17ec0c0, receiver=0x3a06f20, event=0x34e47f0) at ../../kdeui/kernel/kapplication.cpp:311
#40 0x00007fe8dec71afc in QCoreApplication::notifyInternal (this=0x17ec0c0, receiver=0x3a06f20, event=0x34e47f0) at kernel/qcoreapplication.cpp:787
#41 0x00007fe8dec7551f in sendEvent (event=0x34e47f0, receiver=0x3a06f20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#42 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x178e430) at kernel/qcoreapplication.cpp:1428
#43 0x00007fe8dec9ca73 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#44 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#45 0x00007fe8d6035a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007fe8d6036258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007fe8d6036429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007fe8dec9ced6 in QEventDispatcherGlib::processEvents (this=0x178ff40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#49 0x00007fe8de0ca07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#50 0x00007fe8dec70cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#51 0x00007fe8dec70ef7 in QEventLoop::exec (this=0x7fffb2e09ca0, flags=...) at kernel/qeventloop.cpp:201
#52 0x00007fe8dec75789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#53 0x00007fe8e1db61a3 in kdemain (argc=1, argv=0x7fffb2e0a088) at ../../../../plasma/desktop/shell/main.cpp:120
#54 0x00007fe8e19f730d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffb2e0a088, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb2e0a078) at libc-start.c:226
#55 0x0000000000400671 in _start ()