Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic-pae i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
attempted to create a new default taskbar, while one already exists (is this not allowed?)

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb1f27b20 (LWP 1548))]

Thread 5 (Thread 0xb08f2b70 (LWP 1549)):
#0  0xb2ffcd10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0xb63e87d5 in do_gettime (frac=0xb08f2010, sec=0xb08f2008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb64bb4b6 in QTimerInfoList::updateCurrentTime (this=0x9e8acb4) at kernel/qeventdispatcher_unix.cpp:339
#4  0xb64bb80a in QTimerInfoList::timerWait (this=0x9e8acb4, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0xb64ba053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xb08f211c) at kernel/qeventdispatcher_glib.cpp:136
#6  0xb64ba0ed in timerSourcePrepare (source=0x9e8ac80, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0xb2f4188c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2f42637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb2f42c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb64bab37 in QEventDispatcherGlib::processEvents (this=0x9e89410, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0xb648b1dd in QEventLoop::processEvents (this=0xb08f22a0, flags=...) at kernel/qeventloop.cpp:149
#12 0xb648b421 in QEventLoop::exec (this=0xb08f22a0, flags=...) at kernel/qeventloop.cpp:201
#13 0xb638e90b in QThread::exec (this=0x9e87ce0) at thread/qthread.cpp:498
#14 0xb646be2d in QInotifyFileSystemWatcherEngine::run (this=0x9e87ce0) at io/qfilesystemwatcher_inotify.cpp:248
#15 0xb63917b3 in QThreadPrivate::start (arg=0x9e87ce0) at thread/qthread_unix.cpp:331
#16 0xb305cd31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0xb766f0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xa9bcab70 (LWP 1550)):
#0  0xb305fdf9 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb767cf54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2f4120b in g_main_context_release () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2f42906 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2f42c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb64bab37 in QEventDispatcherGlib::processEvents (this=0xa022188, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0xb648b1dd in QEventLoop::processEvents (this=0xa9bca2a0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb648b421 in QEventLoop::exec (this=0xa9bca2a0, flags=...) at kernel/qeventloop.cpp:201
#8  0xb638e90b in QThread::exec (this=0x9976cf0) at thread/qthread.cpp:498
#9  0xb646be2d in QInotifyFileSystemWatcherEngine::run (this=0x9976cf0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb63917b3 in QThreadPrivate::start (arg=0x9976cf0) at thread/qthread_unix.cpp:331
#11 0xb305cd31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb766f0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xa76a5b70 (LWP 1558)):
#0  0xb77aa424 in __kernel_vsyscall ()
#1  0xb766040e in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2f5134b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2f42896 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2f42f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xa7f85cea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0xb2f695f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb305cd31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0xb766f0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xa6b38b70 (LWP 1997)):
#0  0xb77aa424 in __kernel_vsyscall ()
#1  0xb3060a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb767ccfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb3f0c9a9 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb3f0c9ef in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb305cd31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb766f0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb1f27b20 (LWP 1548)):
[KCrash Handler]
#7  QGraphicsLayoutItemPrivate::hasHeightForWidth (this=0x40776000) at graphicsview/qgraphicslayoutitem.cpp:280
#8  0xb6080458 in QGridLayoutItem::hasDynamicConstraint (this=0xaec6378) at graphicsview/qgridlayoutengine.cpp:576
#9  0xb608144e in ensureDynamicConstraint (this=0xaf83970) at graphicsview/qgridlayoutengine.cpp:1657
#10 QGridLayoutEngine::ensureDynamicConstraint (this=0xaf83970) at graphicsview/qgridlayoutengine.cpp:1652
#11 0xb60814f0 in QGridLayoutEngine::hasDynamicConstraint (this=0xaf83970) at graphicsview/qgridlayoutengine.cpp:1677
#12 0xb6085942 in QGridLayoutEngine::sizeHint (this=0xaf83970, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#13 0xb600642f in QGraphicsGridLayout::sizeHint (this=0xaec2380, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#14 0xb6033365 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0xaf83880, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#15 0xb6033d54 in effectiveSizeHint (constraint=..., which=Qt::MinimumSize, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#16 QGraphicsLayoutItem::effectiveSizeHint (this=0xaec2380, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:810
#17 0xb607639c in QGraphicsWidget::sizeHint (this=0xa1d4048, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicswidget.cpp:743
#18 0xb6033417 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0xafe68f8, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#19 0xb6033d54 in effectiveSizeHint (constraint=..., which=Qt::PreferredSize, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#20 QGraphicsLayoutItem::effectiveSizeHint (this=0xa1d4058, which=Qt::PreferredSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:810
#21 0xb0b52331 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#22 0xb0b54339 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#23 0xb0b546df in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#24 0xb0b54d8d in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#25 0xb6492b7d in metacall (argv=0xbfa5dee8, idx=23, cl=QMetaObject::InvokeMetaMethod, object=0xaf780b8) at kernel/qmetaobject.cpp:237
#26 QMetaObject::metacall (object=0xaf780b8, cl=QMetaObject::InvokeMetaMethod, idx=23, argv=0xbfa5dee8) at kernel/qmetaobject.cpp:232
#27 0xb64a1a6a in QMetaObject::activate (sender=0x9b9dcf8, m=0xb0b61038, local_signal_index=0, argv=0xbfa5dee8) at kernel/qobject.cpp:3278
#28 0xb0b33e85 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#29 0xb0b34128 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#30 0xb0b342cd in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#31 0xb6492b7d in metacall (argv=0xbfa5e068, idx=7, cl=QMetaObject::InvokeMetaMethod, object=0x9b9dcf8) at kernel/qmetaobject.cpp:237
#32 QMetaObject::metacall (object=0x9b9dcf8, cl=QMetaObject::InvokeMetaMethod, idx=7, argv=0xbfa5e068) at kernel/qmetaobject.cpp:232
#33 0xb64a1a6a in QMetaObject::activate (sender=0x9b3e488, m=0xb0b6109c, local_signal_index=0, argv=0xbfa5e068) at kernel/qobject.cpp:3278
#34 0xb0b34875 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#35 0xb0b3c816 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#36 0xb0b33c29 in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#37 0xb0b484fb in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#38 0xb0b496ac in ?? () from /usr/lib/kde4/plasma_applet_systemtray.so
#39 0xb6492b7d in metacall (argv=0xaec0150, idx=83, cl=QMetaObject::InvokeMetaMethod, object=0xafa06e8) at kernel/qmetaobject.cpp:237
#40 QMetaObject::metacall (object=0xafa06e8, cl=QMetaObject::InvokeMetaMethod, idx=83, argv=0xaec0150) at kernel/qmetaobject.cpp:232
#41 0xb649d685 in QMetaCallEvent::placeMetaCall (this=0xafa77c8, object=0xafa06e8) at kernel/qobject.cpp:535
#42 0xb64a4b52 in QObject::event (this=0xafa06e8, e=0xafa77c8) at kernel/qobject.cpp:1217
#43 0xb6076bd4 in QGraphicsWidget::event (this=0xafa06e8, event=0xafa77c8) at graphicsview/qgraphicswidget.cpp:1455
#44 0xb59b7d54 in notify_helper (e=0xafa77c8, receiver=0xafa06e8, this=0x9793ac8) at kernel/qapplication.cpp:4486
#45 QApplicationPrivate::notify_helper (this=0x9793ac8, receiver=0xafa06e8, e=0xafa77c8) at kernel/qapplication.cpp:4458
#46 0xb59bd103 in QApplication::notify (this=0xafa77c8, receiver=0xafa06e8, e=0xafa77c8) at kernel/qapplication.cpp:3886
#47 0xb6af1681 in KApplication::notify (this=0x9787a90, receiver=0xafa06e8, event=0xafa77c8) at ../../kdeui/kernel/kapplication.cpp:311
#48 0xb648c19e in QCoreApplication::notifyInternal (this=0x9787a90, receiver=0xafa06e8, event=0xafa77c8) at kernel/qcoreapplication.cpp:787
#49 0xb648ff93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#50 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x97482e0) at kernel/qcoreapplication.cpp:1428
#51 0xb64900ec in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1321
#52 0xb64ba6a4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#53 postEventSourceDispatch (s=0x9796700) at kernel/qeventdispatcher_glib.cpp:277
#54 0xb2f4225f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#55 0xb2f42990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#56 0xb2f42c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#57 0xb64baada in QEventDispatcherGlib::processEvents (this=0x9749218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#58 0xb5a6fe3a in QGuiEventDispatcherGlib::processEvents (this=0x9749218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#59 0xb648b1dd in QEventLoop::processEvents (this=0xbfa5e914, flags=...) at kernel/qeventloop.cpp:149
#60 0xb648b421 in QEventLoop::exec (this=0xbfa5e914, flags=...) at kernel/qeventloop.cpp:201
#61 0xb649019d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#62 0xb59b58f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#63 0xb775f18b in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#64 0x0804850b in ?? ()
#65 0xb75b6113 in __libc_start_main () from /lib/i386-linux-gnu/libc.so.6
#66 0x08048531 in _start ()

This bug may be a duplicate of or related to bug 291859.

Possible duplicates by query: bug 291859, bug 291307, bug 291246, bug 291207, bug 290919.

Reported using DrKonqi