Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.00 (4.7.0)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic x86_64
Distribution: Ubuntu 11.04

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

unlock widgets, then right click on the toolbox thing, and click "add panel", and then default panel.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f60a817b7c0 (LWP 1816))]

Thread 4 (Thread 0x7f60855a8700 (LWP 1838)):
#0  0x00007f60a7a73f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f609c4a0104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f609c4a0639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f60a4c90446 in QEventDispatcherGlib::processEvents (this=0x292dc70, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f60a4c64882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f60a4c64abc in QEventLoop::exec (this=0x7f60855a7cd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f60a4b7b924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f60a4c46c2f in QInotifyFileSystemWatcherEngine::run (this=0x29ab200) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f60a4b7e175 in QThreadPrivate::start (arg=0x29ab200) at thread/qthread_unix.cpp:320
#9  0x00007f609a5239e3 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f607999f700 (LWP 1849)):
#0  0x00007f609c49f10a in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f609c49ff9d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f609c4a0639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f60a4c90446 in QEventDispatcherGlib::processEvents (this=0x2c0b6d0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f60a4c64882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f60a4c64abc in QEventLoop::exec (this=0x7f607999ecd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f60a4b7b924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f60a4c46c2f in QInotifyFileSystemWatcherEngine::run (this=0x2c0a990) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f60a4b7e175 in QThreadPrivate::start (arg=0x2c0a990) at thread/qthread_unix.cpp:320
#9  0x00007f609a5239e3 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f60744fa700 (LWP 30545)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f60a20d92a2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f60a23f2180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f60a20d92d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f60a2400254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f609a5239e3 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#4  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f60a817b7c0 (LWP 1816)):
[KCrash Handler]
#6  QGraphicsLayoutItem::graphicsItem (this=0x0) at graphicsview/qgraphicslayoutitem.cpp:920
#7  0x00007f60a460dae1 in QGraphicsLayoutItemPrivate::hasHeightForWidth (this=<value optimized out>) at graphicsview/qgraphicslayoutitem.cpp:286
#8  0x00007f60a4652581 in QGridLayoutItem::hasDynamicConstraint (this=0x4819c20) at graphicsview/qgridlayoutengine.cpp:576
#9  0x00007f60a4653839 in QGridLayoutEngine::ensureDynamicConstraint (this=0x48329f0) at graphicsview/qgridlayoutengine.cpp:1657
#10 0x00007f60a46538e9 in QGridLayoutEngine::hasDynamicConstraint (this=0x48329f0) at graphicsview/qgridlayoutengine.cpp:1677
#11 0x00007f60a4657638 in QGridLayoutEngine::sizeHint (this=0x48329f0, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#12 0x00007f60a45e22ca in QGraphicsGridLayout::sizeHint (this=<value optimized out>, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#13 0x00007f60a460cd68 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x48328e0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#14 0x00007f60a460d651 in QGraphicsLayoutItem::effectiveSizeHint (this=<value optimized out>, which=<value optimized out>, constraint=<value optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#15 0x00007f60a4649b21 in QGraphicsWidget::sizeHint (this=<value optimized out>, which=<value optimized out>, constraint=<value optimized out>) at graphicsview/qgraphicswidget.cpp:729
#16 0x00007f60a460ce4b in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x48327f0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#17 0x00007f60a460d651 in QGraphicsLayoutItem::effectiveSizeHint (this=<value optimized out>, which=<value optimized out>, constraint=<value optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#18 0x00007f6086994065 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#19 0x00007f6086995f55 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#20 0x00007f6086996426 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#21 0x00007f6086996554 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#22 0x00007f60a4c7a5f8 in QMetaObject::activate (sender=0x24834f0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff6adfe420) at kernel/qobject.cpp:3287
#23 0x00007f608697975f in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#24 0x00007f60869798cd in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#25 0x00007f6086979a74 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#26 0x00007f60a4c7a5f8 in QMetaObject::activate (sender=0x2490880, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff6adfe5a0) at kernel/qobject.cpp:3287
#27 0x00007f608697a06f in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#28 0x00007f6086981385 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#29 0x00007f60869795b6 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#30 0x00007f608698b530 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#31 0x00007f608698c4bc in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#32 0x00007f60a4c7949a in QObject::event (this=0x4828920, e=<value optimized out>) at kernel/qobject.cpp:1226
#33 0x00007f60a464a1bb in QGraphicsWidget::event (this=0x4828920, event=0x48154b0) at graphicsview/qgraphicswidget.cpp:1423
#34 0x00007f60a40229f4 in QApplicationPrivate::notify_helper (this=0x1dbf9f0, receiver=0x4828920, e=0x48154b0) at kernel/qapplication.cpp:4462
#35 0x00007f60a40273ba in QApplication::notify (this=<value optimized out>, receiver=0x4828920, e=0x48154b0) at kernel/qapplication.cpp:4341
#36 0x00007f60a5905796 in KApplication::notify (this=0x1da1320, receiver=0x4828920, event=0x48154b0) at ../../kdeui/kernel/kapplication.cpp:311
#37 0x00007f60a4c6549c in QCoreApplication::notifyInternal (this=0x1da1320, receiver=0x4828920, event=0x48154b0) at kernel/qcoreapplication.cpp:731
#38 0x00007f60a4c68c25 in sendEvent (receiver=0x0, event_type=0, data=0x1ce8b00) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#39 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1ce8b00) at kernel/qcoreapplication.cpp:1372
#40 0x00007f60a4c90253 in sendPostedEvents (s=0x1dc49c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#41 postEventSourceDispatch (s=0x1dc49c0) at kernel/qeventdispatcher_glib.cpp:277
#42 0x00007f609c49fbcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007f609c4a03a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007f609c4a0639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f60a4c903ef in QEventDispatcherGlib::processEvents (this=0x1ce82e0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#46 0x00007f60a40cc4de in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#47 0x00007f60a4c64882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#48 0x00007f60a4c64abc in QEventLoop::exec (this=0x7fff6adff1d0, flags=...) at kernel/qeventloop.cpp:201
#49 0x00007f60a4c68ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#50 0x00007f60a7d6f9dc in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#51 0x00007f60a79b9eff in __libc_start_main (main=0x400740 <_start+256>, argc=1, ubp_av=0x7fff6adff5d8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff6adff5c8) at libc-start.c:226
#52 0x0000000000400669 in _start ()

Possible duplicates by query: bug 274819.

Reported using DrKonqi