Bug 281441

Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic-pae i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
Plasma often crashes at certain instances. These include:
1. When my wallpaper is set to "slideshow" and it changes.
2. When I open the plasma dashboard

- Custom settings of the application:
1. Desktop wallpaper set to slideshow

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[KCrash Handler]
#7  0xb35e6942 in ?? () from /usr/lib/i386-linux-gnu/libfontconfig.so.1
#8  0xb35e6cee in FcStrCmpIgnoreCase () from /usr/lib/i386-linux-gnu/libfontconfig.so.1
#9  0xb35d3610 in ?? () from /usr/lib/i386-linux-gnu/libfontconfig.so.1
#10 0xb35d4382 in FcConfigSubstituteWithPat () from /usr/lib/i386-linux-gnu/libfontconfig.so.1
#11 0xb35d48e7 in FcConfigSubstitute () from /usr/lib/i386-linux-gnu/libfontconfig.so.1
#12 0xb5e3d1b9 in tryPatternLoad (p=<value optimized out>, screen=0, request=..., script=0, matchedPattern=0xbfccbbe4) at text/qfontdatabase_x11.cpp:1602
#13 0xb5e459bd in loadFc (d=0x8ea1ae0, script=0) at text/qfontdatabase_x11.cpp:1709
#14 QFontDatabase::load (d=0x8ea1ae0, script=0) at text/qfontdatabase_x11.cpp:1960
#15 0xb5e2172f in QFontPrivate::engineForScript (this=0x8ea1ae0, script=0) at text/qfont.cpp:270
#16 0xb5e5a14a in QTextEngine::fontEngine (this=0x8ea0d58, si=..., ascent=0x8ea1ab8, descent=0x8ea1ab4, leading=0x8ea1abc) at text/qtextengine.cpp:1802
#17 0xb5e5aafc in QTextEngine::shapeTextWithHarfbuzz (this=0x8ea0d58, item=0) at text/qtextengine.cpp:1135
#18 0xb5e5bad5 in QTextEngine::shapeText (this=0x8ea0d58, item=0) at text/qtextengine.cpp:874
#19 0xb5e5bf14 in QTextEngine::shape (this=0x8ea0d58, item=0) at text/qtextengine.cpp:1381
#20 0xb5e66fea in QTextLine::layout_helper (this=0xbfccc940, maxGlyphs=2147483647) at text/qtextlayout.cpp:1836
#21 0xb5e67eb3 in QTextLine::setLineWidth (this=0xbfccc940, width=<value optimized out>) at text/qtextlayout.cpp:1624
#22 0xb5ea6cfa in QTextDocumentLayoutPrivate::layoutBlock (this=0x8e9ee28, bl=..., blockPosition=0, blockFormat=..., layoutStruct=0xbfcccd70, layoutFrom=0, layoutTo=2147483647, previousBlockFormat=0x0) at text/qtextdocumentlayout.cpp:2600
#23 0xb5eafc1a in QTextDocumentLayoutPrivate::layoutFlow (this=0x8e9ee28, it=..., layoutStruct=0xbfcccd70, layoutFrom=0, layoutTo=2147483647, width=...) at text/qtextdocumentlayout.cpp:2404
#24 0xb5eade8d in QTextDocumentLayoutPrivate::layoutFrame (this=0x8e9ee28, f=0x8e50190, layoutFrom=0, layoutTo=2147483647, frameWidth=..., frameHeight=..., parentY=...) at text/qtextdocumentlayout.cpp:2145
#25 0xb5eae960 in QTextDocumentLayoutPrivate::layoutFrame (this=0x8e9ee28, f=0x8e50190, layoutFrom=0, layoutTo=2147483647, parentY=...) at text/qtextdocumentlayout.cpp:2051
#26 0xb5eb1bc7 in QTextDocumentLayout::doLayout (this=0x8ed8598, from=0, oldLength=0, length=2147483647) at text/qtextdocumentlayout.cpp:2914
#27 0xb5eb2083 in QTextDocumentLayoutPrivate::ensureLayoutedByPosition (this=0x8e9ee28, position=1000) at text/qtextdocumentlayout.cpp:3076
#28 0xb5eb27d2 in QTextDocumentLayoutPrivate::layoutStep (this=0x8e9ee28) at text/qtextdocumentlayout.cpp:3082
#29 0xb5eb33b8 in QTextDocumentLayout::documentChanged (this=0x8ed8598, from=0, oldLength=0, length=11) at text/qtextdocumentlayout.cpp:2874
#30 0xb5e8c051 in QTextDocumentPrivate::finishEdit (this=0x8e9f0a8) at text/qtextdocument_p.cpp:1218
#31 0xb5e7d9c1 in QTextDocument::setHtml (this=0x8e3fe18, html=...) at text/qtextdocument.cpp:1201
#32 0xb6039922 in QLabelPrivate::ensureTextPopulated (this=0x8e9d4a8) at widgets/qlabel.cpp:1540
#33 0xb6039a90 in QLabelPrivate::ensureTextLayouted (this=0x8e9d4a8) at widgets/qlabel.cpp:1574
#34 0xb6039eee in QLabelPrivate::sizeForWidth (this=0x8e9d4a8, w=-1) at widgets/qlabel.cpp:652
#35 0xb603a5d9 in QLabel::minimumSizeHint (this=0x8e9d490) at widgets/qlabel.cpp:899
#36 0xb6243fbd in QGraphicsProxyWidget::sizeHint (this=0x8e44d28, which=Qt::MinimumSize, constraint=...) at graphicsview/qgraphicsproxywidget.cpp:1439
#37 0xb74cc0b5 in Plasma::Label::sizeHint (this=0x8e44d28, which=Qt::MinimumSize, constraint=...) at ../../plasma/widgets/label.cpp:339
#38 0xb6241d5e in QGraphicsLayoutItemPrivate::effectiveSizeHints (this=0x8e9d370, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:175
#39 0xb6242634 in QGraphicsLayoutItem::effectiveSizeHint (this=0x8e44d38, which=Qt::MaximumSize, constraint=...) at graphicsview/qgraphicslayoutitem.cpp:818
#40 0xb6283963 in QGraphicsWidget::setGeometry (this=0x8e44d28, rect=...) at graphicsview/qgraphicswidget.cpp:356
#41 0xb6244294 in QGraphicsProxyWidget::setGeometry (this=0x8e44d28, rect=...) at graphicsview/qgraphicsproxywidget.cpp:771
#42 0xb6281b01 in QGraphicsWidget::resize (this=0x8e44d28, size=...) at graphicsview/qgraphicswidget.cpp:309
#43 0xb6284713 in QGraphicsWidget::updateGeometry (this=0x8e44d28) at graphicsview/qgraphicswidget.cpp:1063
#44 0xb62422a2 in QGraphicsLayoutItem::setSizePolicy (this=0x8e44d38, policy=...) at graphicsview/qgraphicslayoutitem.cpp:466
#45 0xb5c3ba09 in QWidget::setSizePolicy (this=0x8e9d490, policy=...) at kernel/qwidget.cpp:9768
#46 0xb603859b in QLabelPrivate::updateLabel (this=0x8e9d4a8) at widgets/qlabel.cpp:1194
#47 0xb74cd1c1 in Plasma::Label::setText (this=0x8e44d28, text=...) at ../../plasma/widgets/label.cpp:115
#48 0xafe88704 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#49 0xafe89d8c in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#50 0xafe81299 in ?? () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#51 0xb743b4ea in Plasma::PopupAppletPrivate::popupConstraintsEvent (this=0x8ee7d18, constraints=...) at ../../plasma/popupapplet.cpp:247
#52 0xb73dd452 in Plasma::Applet::flushPendingConstraintsEvents (this=0x8eb1538) at ../../plasma/applet.cpp:1341
#53 0xb011af10 in SystemTray::PlasmoidTask::createWidget (this=0x8e4ce30, host=0x8bb9660) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtask.cpp:104
#54 0xb0111e6f in SystemTray::Task::widget (this=0x8e4ce30, host=0x8bb9660, createIfNecessary=true) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:78
#55 0xb012f2cb in SystemTray::TaskArea::addWidgetForTask (this=0x8bbe480, task=0x8e4ce30) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:257
#56 0xb01304de in SystemTray::TaskArea::addTask (this=0x8bbe480, task=0x8e4ce30) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:221
#57 0xb013085f in SystemTray::TaskArea::qt_metacall (this=0x8bbe480, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbfcce0c8) at ./taskarea.moc:89
#58 0xb66966ba in QMetaObject::metacall (object=0x8bbe480, cl=QMetaObject::InvokeMetaMethod, idx=22, argv=0xbfcce0c8) at kernel/qmetaobject.cpp:237
#59 0xb66a64ff in QMetaObject::activate (sender=0x8b2afc0, m=0xb0137028, local_signal_index=0, argv=0xbfcce0c8) at kernel/qobject.cpp:3287
#60 0xb0110c13 in SystemTray::Manager::taskAdded (this=0x8b2afc0, _t1=0x8e4ce30) at ./manager.moc:99
#61 0xb0110e1f in SystemTray::Manager::addTask (this=0x8b2afc0, task=0x8e4ce30) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:87
#62 0xb011100f in SystemTray::Manager::qt_metacall (this=0x8b2afc0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbfcce258) at ./manager.moc:86
#63 0xb66966ba in QMetaObject::metacall (object=0x8b2afc0, cl=QMetaObject::InvokeMetaMethod, idx=7, argv=0xbfcce258) at kernel/qmetaobject.cpp:237
#64 0xb66a64ff in QMetaObject::activate (sender=0x8b24ee8, m=0xb0137084, local_signal_index=0, argv=0xbfcce258) at kernel/qobject.cpp:3287
#65 0xb0111793 in SystemTray::Protocol::taskCreated (this=0x8b24ee8, _t1=0x8e4ce30) at ./protocol.moc:91
#66 0xb011950b in SystemTray::PlasmoidProtocol::addApplet (this=0x8b24ee8, appletName=..., id=3, parent=0x8bb9660) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:114
#67 0xb0119eee in SystemTray::PlasmoidProtocol::loadFromConfig (this=0x8b24ee8, parent=0x8bb9660) at ../../../../../plasma/generic/applets/systemtray/protocols/plasmoid/plasmoidtaskprotocol.cpp:83
#68 0xb011096a in SystemTray::Manager::loadApplets (this=0x8b2afc0, parent=0x8bb9660) at ../../../../../plasma/generic/applets/systemtray/core/manager.cpp:105
#69 0xb0125f57 in SystemTray::Applet::configChanged (this=0x8bb9660) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:207
#70 0xb0121d61 in SystemTray::Applet::init (this=0x8bb9660) at ../../../../../plasma/generic/applets/systemtray/ui/applet.cpp:162
#71 0xb73f08ce in Plasma::ContainmentPrivate::initApplets (this=0x8a9ee58) at ../../plasma/containment.cpp:463
#72 0xb740484b in Plasma::CoronaPrivate::importLayout (this=0x899e178, conf=..., mergeConfig=false) at ../../plasma/corona.cpp:1035
#73 0xb74054ec in Plasma::Corona::loadLayout (this=0x8a3ef80, configName=...) at ../../plasma/corona.cpp:278
#74 0xb74055be in Plasma::Corona::initializeLayout (this=0x8a3ef80, configName=...) at ../../plasma/corona.cpp:181
#75 0xb778b1b7 in PlasmaApp::corona (this=0x8993268) at ../../../../plasma/desktop/shell/plasmaapp.cpp:797
#76 0xb778b4fb in PlasmaApp::setupDesktop (this=0x8993268) at ../../../../plasma/desktop/shell/plasmaapp.cpp:299
#77 0xb778ce42 in PlasmaApp::qt_metacall (this=0x8993268, _c=QMetaObject::InvokeMetaMethod, _id=18, _a=0x8a1deb0) at ./plasmaapp.moc:155
#78 0xb66966ba in QMetaObject::metacall (object=0x8993268, cl=QMetaObject::InvokeMetaMethod, idx=45, argv=0x8a1deb0) at kernel/qmetaobject.cpp:237
#79 0xb66a0e16 in QMetaCallEvent::placeMetaCall (this=0x8a2c268, object=0x8993268) at kernel/qobject.cpp:535
#80 0xb66a53b7 in QObject::event (this=0x8993268, e=0x8a2c268) at kernel/qobject.cpp:1226
#81 0xb66906ab in QCoreApplication::event (this=0x8993268, e=0x8a2c268) at kernel/qcoreapplication.cpp:1560
#82 0xb5beb23f in QApplication::event (this=0x8993268, e=0x8a2c268) at kernel/qapplication.cpp:2503
#83 0xb5be8d24 in QApplicationPrivate::notify_helper (this=0x89a1e60, receiver=0x8993268, e=0x8a2c268) at kernel/qapplication.cpp:4462
#84 0xb5bed8ce in QApplication::notify (this=0x8993268, receiver=0x8993268, e=0x8a2c268) at kernel/qapplication.cpp:3862
#85 0xb6c973ca in KApplication::notify (this=0x8993268, receiver=0x8993268, event=0x8a2c268) at ../../kdeui/kernel/kapplication.cpp:311
#86 0xb66900bb in QCoreApplication::notifyInternal (this=0x8993268, receiver=0x8993268, event=0x8a2c268) at kernel/qcoreapplication.cpp:731
#87 0xb6693c79 in sendEvent (receiver=0x0, event_type=0, data=0x8942f50) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#88 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8942f50) at kernel/qcoreapplication.cpp:1372
#89 0xb6693e0d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1265
#90 0xb66bd3c4 in sendPostedEvents (s=0x89a2a38) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#91 postEventSourceDispatch (s=0x89a2a38) at kernel/qeventdispatcher_glib.cpp:277
#92 0xb363baa8 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#93 0xb363c270 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#94 0xb363c524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#95 0xb66bd53c in QEventDispatcherGlib::processEvents (this=0x8942aa8, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#96 0xb5c9f1e5 in QGuiEventDispatcherGlib::processEvents (this=0x8942aa8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#97 0xb668f289 in QEventLoop::processEvents (this=0xbfccf264, flags=...) at kernel/qeventloop.cpp:149
#98 0xb668f522 in QEventLoop::exec (this=0xbfccf264, flags=...) at kernel/qeventloop.cpp:201
#99 0xb6693ecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#100 0xb5be68e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#101 0xb77705a5 in kdemain (argc=1, argv=0xbfccf474) at ../../../../plasma/desktop/shell/main.cpp:118
#102 0x080485cb in main (argc=1, argv=0xbfccf474) at plasma-desktop_dummy.cpp:3

Reported using DrKonqi