Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic-pae i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
removed the Pannel who show the running application, and traing to add back the default pannel, 

- Unusual behavior I noticed:

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb0574720 (LWP 8849))]

Thread 5 (Thread 0xa9929b70 (LWP 8850)):
#0  0xb2faad10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0xb63957d5 in do_gettime (frac=0xa9928f60, sec=0xa9928f58) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb64684b6 in QTimerInfoList::updateCurrentTime (this=0x8fa8a2c) at kernel/qeventdispatcher_unix.cpp:339
#4  0xb646880a in QTimerInfoList::timerWait (this=0x8fa8a2c, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0xb6467053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa992906c) at kernel/qeventdispatcher_glib.cpp:136
#6  0xb64670ed in timerSourcePrepare (source=0x8fa89f8, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0xb2eef88c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2ef0637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb2ef0c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb6467b37 in QEventDispatcherGlib::processEvents (this=0x8fa8820, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0xb64381dd in QEventLoop::processEvents (this=0xa99291f0, flags=...) at kernel/qeventloop.cpp:149
#12 0xb6438421 in QEventLoop::exec (this=0xa99291f0, flags=...) at kernel/qeventloop.cpp:201
#13 0xb633b90b in QThread::exec (this=0x8fa6430) at thread/qthread.cpp:498
#14 0xb6418e2d in QInotifyFileSystemWatcherEngine::run (this=0x8fa6430) at io/qfilesystemwatcher_inotify.cpp:248
#15 0xb633e7b3 in QThreadPrivate::start (arg=0x8fa6430) at thread/qthread_unix.cpp:331
#16 0xb265a9cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#17 0xb761a0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xa7cc5b70 (LWP 8851)):
#0  0xb7627ef1 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#1  0xb2eeeeda in g_main_context_acquire () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb2ef056d in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2ef0c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb6467b37 in QEventDispatcherGlib::processEvents (this=0x913ad50, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0xb64381dd in QEventLoop::processEvents (this=0xa7cc51f0, flags=...) at kernel/qeventloop.cpp:149
#6  0xb6438421 in QEventLoop::exec (this=0xa7cc51f0, flags=...) at kernel/qeventloop.cpp:201
#7  0xb633b90b in QThread::exec (this=0x8c44588) at thread/qthread.cpp:498
#8  0xb6418e2d in QInotifyFileSystemWatcherEngine::run (this=0x8c44588) at io/qfilesystemwatcher_inotify.cpp:248
#9  0xb633e7b3 in QThreadPrivate::start (arg=0x8c44588) at thread/qthread_unix.cpp:331
#10 0xb265a9cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#11 0xb761a0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xa62ffb70 (LWP 8857)):
#0  0xb7761424 in __kernel_vsyscall ()
#1  0xb760b40e in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2eff34b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2ef0896 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2ef0f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xa6bdfcea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0xb2f175f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb265a9cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#8  0xb761a0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xa6b00b70 (LWP 9488)):
#0  0xb7761424 in __kernel_vsyscall ()
#1  0xb300ea5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb7627cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb3eb99a9 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb3eb99ef in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb265a9cd in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0xb761a0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb0574720 (LWP 8849)):
[KCrash Handler]
#7  0xb5fe1154 in QGraphicsLayoutItem::graphicsItem (this=0x6c0000) at graphicsview/qgraphicslayoutitem.cpp:920
#8  0xb5fe1225 in QGraphicsLayoutItemPrivate::hasHeightForWidth (this=0xa154e88) at graphicsview/qgraphicslayoutitem.cpp:286
#9  0xb602d458 in QGridLayoutItem::hasDynamicConstraint (this=0x985d0d8) at graphicsview/qgridlayoutengine.cpp:576
#10 0xb602e44e in ensureDynamicConstraint (this=0xa0fd868) at graphicsview/qgridlayoutengine.cpp:1657
#11 QGridLayoutEngine::ensureDynamicConstraint (this=0xa0fd868) at graphicsview/qgridlayoutengine.cpp:1652
#12 0xb602e4f0 in QGridLayoutEngine::hasDynamicConstraint (this=0xa0fd868) at graphicsview/qgridlayoutengine.cpp:1677
#13 0xb6032942 in QGridLayoutEngine::sizeHint (this=0xa0fd868, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#14 0xb5fb342f in QGraphicsGridLayout::sizeHint (this=0xa1496a8, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#15 0xb5fe0365 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0xa0fd778, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#16 0xb5fe0d54 in effectiveSizeHint (constraint=..., which=Qt::MinimumSize, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#17 QGraphicsLayoutItem::effectiveSizeHint (this=0xa1496a8, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:810
#18 0xb602339c in QGraphicsWidget::sizeHint (this=0xa0fc988, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicswidget.cpp:743
#19 0xb5fe0417 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0xa0fd680, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#20 0xb5fe0d54 in effectiveSizeHint (constraint=..., which=Qt::PreferredSize, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#21 QGraphicsLayoutItem::effectiveSizeHint (this=0xa0fc998, which=Qt::PreferredSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:810
#22 0xaf0df331 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0xa0fa110) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#23 0xaf0e1339 in SystemTray::TaskArea::addWidgetForTask (this=0xa0fa110, task=0x9ef9bd0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#24 0xaf0e16df in SystemTray::TaskArea::addTask (this=0xa0fa110, task=0x9ef9bd0) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#25 0xaf0e1d8d in SystemTray::TaskArea::qt_metacall (this=0xa0fa110, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbff62b58) at ./taskarea.moc:89
#26 0xb643fb7d in metacall (argv=0xbff62b58, idx=23, cl=QMetaObject::InvokeMetaMethod, object=0xa0fa110) at kernel/qmetaobject.cpp:237
#27 QMetaObject::metacall (object=0xa0fa110, cl=QMetaObject::InvokeMetaMethod, idx=23, argv=0xbff62b58) at kernel/qmetaobject.cpp:232
#28 0xb644ea6a in QMetaObject::activate (sender=0x8c446e8, m=0xaf0ee038, local_signal_index=0, argv=0xbff62b58) at kernel/qobject.cpp:3278
#29 0xaf0c0e85 in SystemTray::Manager::taskAdded (this=0x8c446e8, _t1=0x9ef9bd0) at ./manager.moc:99
#30 0xaf0c1128 in SystemTray::Manager::addTask (this=0x8c446e8, task=0x9ef9bd0) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:87
#31 0xaf0c12cd in SystemTray::Manager::qt_metacall (this=0x8c446e8, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbff62cd8) at ./manager.moc:86
#32 0xb643fb7d in metacall (argv=0xbff62cd8, idx=7, cl=QMetaObject::InvokeMetaMethod, object=0x8c446e8) at kernel/qmetaobject.cpp:237
#33 QMetaObject::metacall (object=0x8c446e8, cl=QMetaObject::InvokeMetaMethod, idx=7, argv=0xbff62cd8) at kernel/qmetaobject.cpp:232
#34 0xb644ea6a in QMetaObject::activate (sender=0x8ad2788, m=0xaf0ee09c, local_signal_index=0, argv=0xbff62cd8) at kernel/qobject.cpp:3278
#35 0xaf0c1875 in SystemTray::Protocol::taskCreated (this=0x8ad2788, _t1=0x9ef9bd0) at ./protocol.moc:91
#36 0xaf0c9816 in SystemTray::PlasmoidProtocol::addApplet (this=0x8ad2788, appletName=..., id=0, parent=0xa102a68) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#37 0xaf0c0c29 in SystemTray::Manager::addApplet (this=0x8c446e8, appletName=..., parent=0xa102a68) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:110
#38 0xaf0d54fb in SystemTray::Applet::checkDefaultApplets (this=0xa102a68) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:737
#39 0xaf0d66ac in SystemTray::Applet::qt_metacall (this=0xa102a68, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xa155970) at ./applet.moc:91
#40 0xb643fb7d in metacall (argv=0xa155970, idx=83, cl=QMetaObject::InvokeMetaMethod, object=0xa102a68) at kernel/qmetaobject.cpp:237
#41 QMetaObject::metacall (object=0xa102a68, cl=QMetaObject::InvokeMetaMethod, idx=83, argv=0xa155970) at kernel/qmetaobject.cpp:232
#42 0xb644a685 in QMetaCallEvent::placeMetaCall (this=0x9ac82b8, object=0xa102a68) at kernel/qobject.cpp:535
#43 0xb6451b52 in QObject::event (this=0xa102a68, e=0x9ac82b8) at kernel/qobject.cpp:1217
#44 0xb6023bd4 in QGraphicsWidget::event (this=0xa102a68, event=0x9ac82b8) at graphicsview/qgraphicswidget.cpp:1455
#45 0xb5964d54 in notify_helper (e=0x9ac82b8, receiver=0xa102a68, this=0x887b0e8) at kernel/qapplication.cpp:4486
#46 QApplicationPrivate::notify_helper (this=0x887b0e8, receiver=0xa102a68, e=0x9ac82b8) at kernel/qapplication.cpp:4458
#47 0xb596a103 in QApplication::notify (this=0x9ac82b8, receiver=0xa102a68, e=0x9ac82b8) at kernel/qapplication.cpp:3886
#48 0xb6a9e681 in KApplication::notify (this=0x886a408, receiver=0xa102a68, event=0x9ac82b8) at ../../kdeui/kernel/kapplication.cpp:311
#49 0xb643919e in QCoreApplication::notifyInternal (this=0x886a408, receiver=0xa102a68, event=0x9ac82b8) at kernel/qcoreapplication.cpp:787
#50 0xb643cf93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#51 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x87eb2e0) at kernel/qcoreapplication.cpp:1428
#52 0xb643d0ec in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1321
#53 0xb64676a4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#54 postEventSourceDispatch (s=0x887e0d0) at kernel/qeventdispatcher_glib.cpp:277
#55 0xb2ef025f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#56 0xb2ef0990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#57 0xb2ef0c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#58 0xb6467ada in QEventDispatcherGlib::processEvents (this=0x87ec218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#59 0xb5a1ce3a in QGuiEventDispatcherGlib::processEvents (this=0x87ec218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#60 0xb64381dd in QEventLoop::processEvents (this=0xbff63584, flags=...) at kernel/qeventloop.cpp:149
#61 0xb6438421 in QEventLoop::exec (this=0xbff63584, flags=...) at kernel/qeventloop.cpp:201
#62 0xb643d19d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#63 0xb59628f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#64 0xb771618b in kdemain (argc=1, argv=0xbff63784) at ../../../../plasma/desktop/shell/main.cpp:120
#65 0x0804850b in main (argc=1, argv=0xbff63784) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 264750.

Possible duplicates by query: bug 283798, bug 282922, bug 282680, bug 282552, bug 281782.

Reported using DrKonqi