Bug 288137

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic i686
Distribution: Ubuntu 11.10

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

clicked on desktop icon to top , chose add panel, kde crashed to black screen

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb76f2b20 (LWP 1717))]

Thread 3 (Thread 0xb1809b70 (LWP 1718)):
#0  0x05304d24 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x00929f54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x01d9887f in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x01d99637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x01d99c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x01baab37 in QEventDispatcherGlib::processEvents (this=0x9b53820, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x01b7b1dd in QEventLoop::processEvents (this=0xb18092a0, flags=...) at kernel/qeventloop.cpp:149
#7  0x01b7b421 in QEventLoop::exec (this=0xb18092a0, flags=...) at kernel/qeventloop.cpp:201
#8  0x01a7e90b in QThread::exec (this=0x9b50c18) at thread/qthread.cpp:498
#9  0x01b5be2d in QInotifyFileSystemWatcherEngine::run (this=0x9b50c18) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x01a817b3 in QThreadPrivate::start (arg=0x9b50c18) at thread/qthread_unix.cpp:331
#11 0x05301d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x0091c0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xae9ceb70 (LWP 1986)):
#0  0x002fc416 in __kernel_vsyscall ()
#1  0x05305a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x00929cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x06e7d9a9 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0x06e7d9ef in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0x05301d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x0091c0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb76f2b20 (LWP 1717)):
[KCrash Handler]
#7  0x02cf1154 in QGraphicsLayoutItem::graphicsItem (this=0x2a) at graphicsview/qgraphicslayoutitem.cpp:920
#8  0x02cf1225 in QGraphicsLayoutItemPrivate::hasHeightForWidth (this=0xa323540) at graphicsview/qgraphicslayoutitem.cpp:286
#9  0x02d3d458 in QGridLayoutItem::hasDynamicConstraint (this=0xa181488) at graphicsview/qgridlayoutengine.cpp:576
#10 0x02d3e44e in ensureDynamicConstraint (this=0xa20e7a0) at graphicsview/qgridlayoutengine.cpp:1657
#11 QGridLayoutEngine::ensureDynamicConstraint (this=0xa20e7a0) at graphicsview/qgridlayoutengine.cpp:1652
#12 0x02d3e4f0 in QGridLayoutEngine::hasDynamicConstraint (this=0xa20e7a0) at graphicsview/qgridlayoutengine.cpp:1677
#13 0x02d42942 in QGridLayoutEngine::sizeHint (this=0xa20e7a0, styleInfo=..., which=Qt::MaximumSize, constraint=...) at graphicsview/qgridlayoutengine.cpp:1134
#14 0x02cc342f in QGraphicsGridLayout::sizeHint (this=0xa3287f8, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicsgridlayout.cpp:656
#15 0x02cf0365 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0xa20e6b0, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:169
#16 0x02cf0d54 in effectiveSizeHint (constraint=..., which=Qt::MinimumSize, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#17 QGraphicsLayoutItem::effectiveSizeHint (this=0xa3287f8, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:810
#18 0x02d3339c in QGraphicsWidget::sizeHint (this=0xa17ba68, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicswidget.cpp:743
#19 0x02cf0417 in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0xa20e5b8, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#20 0x02cf0d54 in effectiveSizeHint (constraint=..., which=Qt::PreferredSize, this=<optimized out>) at graphicsview/qgraphicslayoutitem.cpp:818
#21 QGraphicsLayoutItem::effectiveSizeHint (this=0xa17ba78, which=Qt::PreferredSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:810
#22 0x05bb7331 in SystemTray::TaskArea::adjustHiddentTasksWidget (this=0xa17b540) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:452
#23 0x05bb9339 in SystemTray::TaskArea::addWidgetForTask (this=0xa17b540, task=0xa41d340) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:320
#24 0x05bb96df in SystemTray::TaskArea::addTask (this=0xa17b540, task=0xa41d340) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:196
#25 0x05bb9d8d in SystemTray::TaskArea::qt_metacall (this=0xa17b540, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfff1588) at ./taskarea.moc:89
#26 0x01b82b7d in metacall (argv=0xbfff1588, idx=23, cl=QMetaObject::InvokeMetaMethod, object=0xa17b540) at kernel/qmetaobject.cpp:237
#27 QMetaObject::metacall (object=0xa17b540, cl=QMetaObject::InvokeMetaMethod, idx=23, argv=0xbfff1588) at kernel/qmetaobject.cpp:232
#28 0x01b91a6a in QMetaObject::activate (sender=0x99455c8, m=0x5bc6038, local_signal_index=0, argv=0xbfff1588) at kernel/qobject.cpp:3278
#29 0x05b98e85 in SystemTray::Manager::taskAdded (this=0x99455c8, _t1=0xa41d340) at ./manager.moc:99
#30 0x05b99128 in SystemTray::Manager::addTask (this=0x99455c8, task=0xa41d340) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:87
#31 0x05b992cd in SystemTray::Manager::qt_metacall (this=0x99455c8, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfff1708) at ./manager.moc:86
#32 0x01b82b7d in metacall (argv=0xbfff1708, idx=7, cl=QMetaObject::InvokeMetaMethod, object=0x99455c8) at kernel/qmetaobject.cpp:237
#33 QMetaObject::metacall (object=0x99455c8, cl=QMetaObject::InvokeMetaMethod, idx=7, argv=0xbfff1708) at kernel/qmetaobject.cpp:232
#34 0x01b91a6a in QMetaObject::activate (sender=0x98626e8, m=0x5bc609c, local_signal_index=0, argv=0xbfff1708) at kernel/qobject.cpp:3278
#35 0x05b99875 in SystemTray::Protocol::taskCreated (this=0x98626e8, _t1=0xa41d340) at ./protocol.moc:91
#36 0x05ba1816 in SystemTray::PlasmoidProtocol::addApplet (this=0x98626e8, appletName=..., id=0, parent=0xa15e488) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:112
#37 0x05b98c29 in SystemTray::Manager::addApplet (this=0x99455c8, appletName=..., parent=0xa15e488) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:110
#38 0x05bad4fb in SystemTray::Applet::checkDefaultApplets (this=0xa15e488) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:737
#39 0x05bae6ac in SystemTray::Applet::qt_metacall (this=0xa15e488, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xa31c780) at ./applet.moc:91
#40 0x01b82b7d in metacall (argv=0xa31c780, idx=83, cl=QMetaObject::InvokeMetaMethod, object=0xa15e488) at kernel/qmetaobject.cpp:237
#41 QMetaObject::metacall (object=0xa15e488, cl=QMetaObject::InvokeMetaMethod, idx=83, argv=0xa31c780) at kernel/qmetaobject.cpp:232
#42 0x01b8d685 in QMetaCallEvent::placeMetaCall (this=0xa31dbb0, object=0xa15e488) at kernel/qobject.cpp:535
#43 0x01b94b52 in QObject::event (this=0xa15e488, e=0xa31dbb0) at kernel/qobject.cpp:1217
#44 0x02d33bd4 in QGraphicsWidget::event (this=0xa15e488, event=0xa31dbb0) at graphicsview/qgraphicswidget.cpp:1455
#45 0x02674d54 in notify_helper (e=0xa31dbb0, receiver=0xa15e488, this=0x9580bc0) at kernel/qapplication.cpp:4486
#46 QApplicationPrivate::notify_helper (this=0x9580bc0, receiver=0xa15e488, e=0xa31dbb0) at kernel/qapplication.cpp:4458
#47 0x0267a103 in QApplication::notify (this=0xa31dbb0, receiver=0xa15e488, e=0xa31dbb0) at kernel/qapplication.cpp:3886
#48 0x0118f681 in KApplication::notify (this=0x9571370, receiver=0xa15e488, event=0xa31dbb0) at ../../kdeui/kernel/kapplication.cpp:311
#49 0x01b7c19e in QCoreApplication::notifyInternal (this=0x9571370, receiver=0xa15e488, event=0xa31dbb0) at kernel/qcoreapplication.cpp:787
#50 0x01b7ff93 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=0x95382e0) at kernel/qcoreapplication.cpp:1428
#52 0x01b800ec in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1321
#53 0x01baa6a4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#54 postEventSourceDispatch (s=0x95807b0) at kernel/qeventdispatcher_glib.cpp:277
#55 0x01d9925f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#56 0x01d99990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#57 0x01d99c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#58 0x01baaada in QEventDispatcherGlib::processEvents (this=0x9539218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#59 0x0272ce3a in QGuiEventDispatcherGlib::processEvents (this=0x9539218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#60 0x01b7b1dd in QEventLoop::processEvents (this=0xbfff1fb4, flags=...) at kernel/qeventloop.cpp:149
#61 0x01b7b421 in QEventLoop::exec (this=0xbfff1fb4, flags=...) at kernel/qeventloop.cpp:201
#62 0x01b8019d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#63 0x026728f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#64 0x0054b18b in kdemain (argc=1, argv=0xbfff21b4) at ../../../../plasma/desktop/shell/main.cpp:120
#65 0x0804850b in main (argc=1, argv=0xbfff21b4) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 287313, bug 286802, bug 286242, bug 286181, bug 285926.

Reported using DrKonqi