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 i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed: No program was running. I selected Add Panel from the top-right, selected Default, and it crashed. It does this every time without fail (if you take my meaning!). Recently upgraded to Ubuntu 11.10 from Ubuntu 11.04, and as I dislike Unity I installed the KDE packages. Not a very stable system afterwards and have experienced several crashes with this feature, and even when trying to add a printer.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77d7b20 (LWP 13872))]

Thread 5 (Thread 0xb185db70 (LWP 13873)):
#0  0x08e20d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x014d17d5 in do_gettime (frac=0xb185d010, sec=0xb185d008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x015a44b6 in QTimerInfoList::updateCurrentTime (this=0xa93499c) at kernel/qeventdispatcher_unix.cpp:339
#4  0x015a480a in QTimerInfoList::timerWait (this=0xa93499c, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x015a3053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xb185d11c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x015a30ed in timerSourcePrepare (source=0xa934968, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x047f588c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x047f6637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x047f6c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x015a3b37 in QEventDispatcherGlib::processEvents (this=0xa938418, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x015741dd in QEventLoop::processEvents (this=0xb185d2a0, flags=...) at kernel/qeventloop.cpp:149
#12 0x01574421 in QEventLoop::exec (this=0xb185d2a0, flags=...) at kernel/qeventloop.cpp:201
#13 0x0147790b in QThread::exec (this=0xa92f588) at thread/qthread.cpp:498
#14 0x01554e2d in QInotifyFileSystemWatcherEngine::run (this=0xa92f588) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x0147a7b3 in QThreadPrivate::start (arg=0xa92f588) at thread/qthread_unix.cpp:331
#16 0x09db4d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0x00d030ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xafeb6b70 (LWP 13874)):
#0  0x047f5cd0 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0x047f68f0 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x047f6c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x015a3b37 in QEventDispatcherGlib::processEvents (this=0xaa378b0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x015741dd in QEventLoop::processEvents (this=0xafeb62a0, flags=...) at kernel/qeventloop.cpp:149
#5  0x01574421 in QEventLoop::exec (this=0xafeb62a0, flags=...) at kernel/qeventloop.cpp:201
#6  0x0147790b in QThread::exec (this=0xa0748c8) at thread/qthread.cpp:498
#7  0x01554e2d in QInotifyFileSystemWatcherEngine::run (this=0xa0748c8) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x0147a7b3 in QThreadPrivate::start (arg=0xa0748c8) at thread/qthread_unix.cpp:331
#9  0x09db4d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#10 0x00d030ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xadc34b70 (LWP 13887)):
#0  0x00d3eb66 in ?? () from /lib/i386-linux-gnu/libc.so.6
#1  0x00d10f28 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x047f6565 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x047f6f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x05ee3cea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#5  0x0481d5f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0x09db4d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#7  0x00d030ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xad04bb70 (LWP 15411)):
#0  0x00fd5416 in __kernel_vsyscall ()
#1  0x09db8a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x00d10cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x091569a9 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0x091569ef in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0x09db4d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x00d030ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb77d7b20 (LWP 13872)):
[KCrash Handler]
#7  0x05b01154 in QGraphicsLayoutItem::graphicsItem (this=0x71600000) at graphicsview/qgraphicslayoutitem.cpp:920
#8  0x05b01225 in QGraphicsLayoutItemPrivate::hasHeightForWidth (this=0x66006e) at graphicsview/qgraphicslayoutitem.cpp:286
#9  0x05b4d458 in QGridLayoutItem::hasDynamicConstraint (this=0xbd36510) at graphicsview/qgridlayoutengine.cpp:576
#10 0x05b4e44e in ensureDynamicConstraint (this=0xc89d860) at graphicsview/qgridlayoutengine.cpp:1657
#11 QGridLayoutEngine::ensureDynamicConstraint (this=0xc89d860) at graphicsview/qgridlayoutengine.cpp:1652
#12 0x05b4e4f0 in QGridLayoutEngine::hasDynamicConstraint (this=0xc89d860) at graphicsview/qgridlayoutengine.cpp:1677
#13 0x05b52942 in QGridLayoutEngine::sizeHint (this=0xc89d860, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#14 0x05ad342f in QGraphicsGridLayout::sizeHint (this=0xc89c2d0, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#15 0x05b00365 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0xc89d770, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#16 0x05b00d54 in effectiveSizeHint (constraint=..., which=Qt::MinimumSize, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#17 QGraphicsLayoutItem::effectiveSizeHint (this=0xc89c2d0, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:810
#18 0x05b4339c in QGraphicsWidget::sizeHint (this=0xc851e08, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicswidget.cpp:743
#19 0x05b00417 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0xc89d678, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#20 0x05b00d54 in effectiveSizeHint (constraint=..., which=Qt::PreferredSize, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#21 QGraphicsLayoutItem::effectiveSizeHint (this=0xc851e18, which=Qt::PreferredSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:810
#22 0x09a1f331 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0xc851d40) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#23 0x09a21339 in SystemTray::TaskArea::addWidgetForTask (this=0xc851d40, task=0xc9bbd80) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#24 0x09a216df in SystemTray::TaskArea::addTask (this=0xc851d40, task=0xc9bbd80) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#25 0x09a21d8d in SystemTray::TaskArea::qt_metacall (this=0xc851d40, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfd56fb8) at ./taskarea.moc:89
#26 0x0157bb7d in metacall (argv=0xbfd56fb8, idx=23, cl=QMetaObject::InvokeMetaMethod, object=0xc851d40) at kernel/qmetaobject.cpp:237
#27 QMetaObject::metacall (object=0xc851d40, cl=QMetaObject::InvokeMetaMethod, idx=23, argv=0xbfd56fb8) at kernel/qmetaobject.cpp:232
#28 0x0158aa6a in QMetaObject::activate (sender=0xa4456f0, m=0x9a2e038, local_signal_index=0, argv=0xbfd56fb8) at kernel/qobject.cpp:3278
#29 0x09a00e85 in SystemTray::Manager::taskAdded (this=0xa4456f0, _t1=0xc9bbd80) at ./manager.moc:99
#30 0x09a01128 in SystemTray::Manager::addTask (this=0xa4456f0, task=0xc9bbd80) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:87
#31 0x09a012cd in SystemTray::Manager::qt_metacall (this=0xa4456f0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfd57138) at ./manager.moc:86
#32 0x0157bb7d in metacall (argv=0xbfd57138, idx=7, cl=QMetaObject::InvokeMetaMethod, object=0xa4456f0) at kernel/qmetaobject.cpp:237
#33 QMetaObject::metacall (object=0xa4456f0, cl=QMetaObject::InvokeMetaMethod, idx=7, argv=0xbfd57138) at kernel/qmetaobject.cpp:232
#34 0x0158aa6a in QMetaObject::activate (sender=0xa4241a8, m=0x9a2e09c, local_signal_index=0, argv=0xbfd57138) at kernel/qobject.cpp:3278
#35 0x09a01875 in SystemTray::Protocol::taskCreated (this=0xa4241a8, _t1=0xc9bbd80) at ./protocol.moc:91
#36 0x09a09816 in SystemTray::PlasmoidProtocol::addApplet (this=0xa4241a8, appletName=..., id=0, parent=0xc899e90) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#37 0x09a00c29 in SystemTray::Manager::addApplet (this=0xa4456f0, appletName=..., parent=0xc899e90) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:110
#38 0x09a15421 in SystemTray::Applet::checkDefaultApplets (this=0xc899e90) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:750
#39 0x09a166ac in SystemTray::Applet::qt_metacall (this=0xc899e90, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbd350d0) at ./applet.moc:91
#40 0x0157bb7d in metacall (argv=0xbd350d0, idx=83, cl=QMetaObject::InvokeMetaMethod, object=0xc899e90) at kernel/qmetaobject.cpp:237
#41 QMetaObject::metacall (object=0xc899e90, cl=QMetaObject::InvokeMetaMethod, idx=83, argv=0xbd350d0) at kernel/qmetaobject.cpp:232
#42 0x01586685 in QMetaCallEvent::placeMetaCall (this=0xbd36008, object=0xc899e90) at kernel/qobject.cpp:535
#43 0x0158db52 in QObject::event (this=0xc899e90, e=0xbd36008) at kernel/qobject.cpp:1217
#44 0x05b43bd4 in QGraphicsWidget::event (this=0xc899e90, event=0xbd36008) at graphicsview/qgraphicswidget.cpp:1455
#45 0x05484d54 in notify_helper (e=0xbd36008, receiver=0xc899e90, this=0xa06bcc8) at kernel/qapplication.cpp:4486
#46 QApplicationPrivate::notify_helper (this=0xa06bcc8, receiver=0xc899e90, e=0xbd36008) at kernel/qapplication.cpp:4458
#47 0x0548a103 in QApplication::notify (this=0xbd36008, receiver=0xc899e90, e=0xbd36008) at kernel/qapplication.cpp:3886
#48 0x011bd681 in KApplication::notify (this=0xa0618c8, receiver=0xc899e90, event=0xbd36008) at ../../kdeui/kernel/kapplication.cpp:311
#49 0x0157519e in QCoreApplication::notifyInternal (this=0xa0618c8, receiver=0xc899e90, event=0xbd36008) at kernel/qcoreapplication.cpp:787
#50 0x01578f93 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=0xa0222e0) at kernel/qcoreapplication.cpp:1428
#52 0x015790ec in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1321
#53 0x015a36a4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#54 postEventSourceDispatch (s=0xa06ece0) at kernel/qeventdispatcher_glib.cpp:277
#55 0x047f625f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#56 0x047f6990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#57 0x047f6c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#58 0x015a3ada in QEventDispatcherGlib::processEvents (this=0xa023200, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#59 0x0553ce3a in QGuiEventDispatcherGlib::processEvents (this=0xa023200, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#60 0x015741dd in QEventLoop::processEvents (this=0xbfd579e4, flags=...) at kernel/qeventloop.cpp:149
#61 0x01574421 in QEventLoop::exec (this=0xbfd579e4, flags=...) at kernel/qeventloop.cpp:201
#62 0x0157919d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#63 0x054828f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#64 0x0014518b in kdemain (argc=1, argv=0xbfd57be4) at ../../../../plasma/desktop/shell/main.cpp:120
#65 0x0804850b in main (argc=1, argv=0xbfd57be4) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 284112.

Possible duplicates by query: bug 284115, bug 284112, bug 284086, bug 283798, bug 282922.

Reported using DrKonqi