Bug 274131

Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.35-27-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
just alt-tab from konsole to chromium

additional info:
m_melnikau@m-melnikau-vaio:~/Development/spa/trunk$ xrandr 
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 4096 x 4096
LVDS connected 1366x768+0+0 (normal left inverted right x axis y axis) 340mm x 190mm
   1366x768       59.9*+   50.0  
DFP1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 478mm x 269mm
   1920x1080      60.0*+

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fce429f77a0 (LWP 15830))]

Thread 4 (Thread 0x7fce1bfff700 (LWP 15833)):
#0  __libc_enable_asynccancel () at ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:66
#1  0x00007fce422edee8 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:85
#2  0x00007fce36cd0104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce36cd0639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fce3f4fc446 in QEventDispatcherGlib::processEvents (this=0x11b88e0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fce3f4d0882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fce3f4d0abc in QEventLoop::exec (this=0x7fce1bffedb0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007fce3f3e7924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#8  0x00007fce3f4b2c2f in QInotifyFileSystemWatcherEngine::run (this=0x11b7ee0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007fce3f3ea175 in QThreadPrivate::start (arg=0x11b7ee0) at thread/qthread_unix.cpp:320
#10 0x00007fce375d3d8c in start_thread (arg=0x7fce1bfff700) at pthread_create.c:304
#11 0x00007fce422fb04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fce1a217700 (LWP 15834)):
#0  0x00007fce422edf03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fce36cd0104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fce36cd0639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce3f4fc446 in QEventDispatcherGlib::processEvents (this=0x12633f0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fce3f4d0882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fce3f4d0abc in QEventLoop::exec (this=0x7fce1a216db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fce3f3e7924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007fce3f4b2c2f in QInotifyFileSystemWatcherEngine::run (this=0x11df450) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fce3f3ea175 in QThreadPrivate::start (arg=0x11df450) at thread/qthread_unix.cpp:320
#9  0x00007fce375d3d8c in start_thread (arg=0x7fce1a217700) at pthread_create.c:304
#10 0x00007fce422fb04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fce1636f700 (LWP 15842)):
#0  0x00007fce422edf03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fce36cd0104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fce36cd09f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce17486c44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fce36cf73e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fce375d3d8c in start_thread (arg=0x7fce1636f700) at pthread_create.c:304
#6  0x00007fce422fb04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fce429f77a0 (LWP 15830)):
[KCrash Handler]
#6  0x00007fce401305df in QString (this=0x20c0075, group=0, state=0) at /usr/include/qt4/QtCore/qstring.h:728
#7  KIconEffect::fingerprint (this=0x20c0075, group=0, state=0) at ../../kdeui/icons/kiconeffect.cpp:169
#8  0x00007fce40135feb in KIconLoaderPrivate::makeCacheKey (this=<value optimized out>, name=..., group=KIconLoader::Desktop, overlays=..., size=24, state=0) at ../../kdeui/icons/kiconloader.cpp:782
#9  0x00007fce4013cd03 in KIconLoader::loadIcon (this=0x206f600, _name=<value optimized out>, group=KIconLoader::Desktop, size=24, state=0, overlays=..., path_store=0x0, canReturnNull=false) at ../../kdeui/icons/kiconloader.cpp:1226
#10 0x00007fce40134c99 in KIconEngine::pixmap (this=<value optimized out>, size=..., mode=<value optimized out>, state=<value optimized out>) at ../../kdeui/icons/kiconengine.cpp:93
#11 0x00007fce3e93bdd5 in QIcon::pixmap (this=<value optimized out>, size=<value optimized out>, mode=<value optimized out>, state=<value optimized out>) at image/qicon.cpp:676
#12 0x00007fce41edd099 in Plasma::IconWidgetPrivate::decoration (this=0x1e26180, option=<value optimized out>, useHoverEffect=false, usePressedEffect=false) at ../../plasma/widgets/iconwidget.cpp:812
#13 0x00007fce41ee2e51 in Plasma::IconWidget::paint (this=0x20183d0, painter=0x7fffcd5ba9d0, option=0x8e66b8, widget=<value optimized out>) at ../../plasma/widgets/iconwidget.cpp:1128
#14 0x00007fce2923a3e9 in SystemTray::DBusSystemTrayWidget::paint (this=0x20183d0, painter=0x7fffcd5ba9d0, option=0x8e66b8, widget=<value optimized out>) at ../../../../../plasma/generic/applets/systemtray/protocols/dbussystemtray/dbussystemtraywidget.cpp:189
#15 0x00007fce3ee8219d in _q_paintItem (item=<value optimized out>, painter=0x7fffcd5ba9d0, option=0x8e66b8, widget=0x0, useWindowOpacity=<value optimized out>, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4314
#16 0x00007fce3ee824b0 in _q_paintIntoCache (pix=0x7fffcd5baf00, item=0x20183e0, pixmapExposed=..., itemToPixmap=..., renderHints=..., option=0x8e66b8, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4352
#17 0x00007fce3ee95ce8 in QGraphicsScenePrivate::drawItemHelper (this=0x8e6490, item=0x20183e0, painter=0x7fffcd5bcf10, option=0x8e66b8, widget=<value optimized out>, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4690
#18 0x00007fce3ee968ba in QGraphicsScenePrivate::draw (this=0x8e6490, item=0x20183e0, painter=0x7fffcd5bcf10, viewTransform=0x7fffcd5bcca0, transformPtr=0x7fffcd5bb5c0, exposedRegion=0x1785770, widget=0x12108c0, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4962
#19 0x00007fce3ee97565 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x8e6490, item=0x20183e0, painter=0x7fffcd5bcf10, viewTransform=0x7fffcd5bcca0, exposedRegion=0x1785770, widget=0x12108c0, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#20 0x00007fce3ee96730 in QGraphicsScenePrivate::draw (this=0x8e6490, item=0xba9870, painter=0x7fffcd5bcf10, viewTransform=0x7fffcd5bcca0, transformPtr=0x7fffcd5bbbc0, exposedRegion=0x1785770, widget=0x12108c0, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4979
#21 0x00007fce3ee97565 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x8e6490, item=0xba9870, painter=0x7fffcd5bcf10, viewTransform=0x7fffcd5bcca0, exposedRegion=0x1785770, widget=0x12108c0, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#22 0x00007fce3ee96730 in QGraphicsScenePrivate::draw (this=0x8e6490, item=0xbd9970, painter=0x7fffcd5bcf10, viewTransform=0x7fffcd5bcca0, transformPtr=0x7fffcd5bc1c0, exposedRegion=0x1785770, widget=0x12108c0, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4979
#23 0x00007fce3ee97565 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x8e6490, item=0xbd9970, painter=0x7fffcd5bcf10, viewTransform=0x7fffcd5bcca0, exposedRegion=0x1785770, widget=0x12108c0, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#24 0x00007fce3ee96730 in QGraphicsScenePrivate::draw (this=0x8e6490, item=0xa1ffa0, painter=0x7fffcd5bcf10, viewTransform=0x7fffcd5bcca0, transformPtr=0x7fffcd5bc7c0, exposedRegion=0x1785770, widget=0x12108c0, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4979
#25 0x00007fce3ee97565 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x8e6490, item=0xa1ffa0, painter=0x7fffcd5bcf10, viewTransform=0x7fffcd5bcca0, exposedRegion=0x1785770, widget=0x12108c0, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#26 0x00007fce3ee97d94 in QGraphicsScenePrivate::drawItems (this=0x8e6490, painter=0x7fffcd5bcf10, viewTransform=0x7fffcd5bcca0, exposedRegion=0x1785770, widget=0x12108c0) at graphicsview/qgraphicsscene.cpp:4735
#27 0x00007fce3eeb4bd2 in QGraphicsView::paintEvent (this=<value optimized out>, event=<value optimized out>) at graphicsview/qgraphicsview.cpp:3469
#28 0x00007fce3e8e3c6a in QWidget::event (this=0x1770000, event=0x7fffcd5bd830) at kernel/qwidget.cpp:8405
#29 0x00007fce3ec93a66 in QFrame::event (this=0x1770000, e=0x7fffcd5bd830) at widgets/qframe.cpp:557
#30 0x00007fce3eeb5e8b in QGraphicsView::viewportEvent (this=0x1770000, event=0x7fffcd5bd830) at graphicsview/qgraphicsview.cpp:2864
#31 0x00007fce3f4d1627 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x12108c0, event=0x7fffcd5bd830) at kernel/qcoreapplication.cpp:846
#32 0x00007fce3e8929b1 in QApplicationPrivate::notify_helper (this=0x8e77d0, receiver=0x12108c0, e=0x7fffcd5bd830) at kernel/qapplication.cpp:4458
#33 0x00007fce3e8973aa in QApplication::notify (this=<value optimized out>, receiver=0x12108c0, e=0x7fffcd5bd830) at kernel/qapplication.cpp:4341
#34 0x00007fce40189866 in KApplication::notify (this=0x8d72b0, receiver=0x12108c0, event=0x7fffcd5bd830) at ../../kdeui/kernel/kapplication.cpp:311
#35 0x00007fce3f4d149c in QCoreApplication::notifyInternal (this=0x8d72b0, receiver=0x12108c0, event=0x7fffcd5bd830) at kernel/qcoreapplication.cpp:731
#36 0x00007fce3e8e0abd in sendSpontaneousEvent (this=0x1754f00, pdev=0x105e888, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x15a65d0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#37 QWidgetPrivate::drawWidget (this=0x1754f00, pdev=0x105e888, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x15a65d0) at kernel/qwidget.cpp:5492
#38 0x00007fce3e8e16d2 in QWidgetPrivate::paintSiblingsRecursive (this=0x17852e0, pdev=0x105e888, siblings=..., index=<value optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x15a65d0) at kernel/qwidget.cpp:5699
#39 0x00007fce3e8e07fc in QWidgetPrivate::drawWidget (this=0x17852e0, pdev=0x105e888, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x15a65d0) at kernel/qwidget.cpp:5545
#40 0x00007fce3eaa52fb in QWidgetBackingStore::sync (this=0x15a65d0) at painting/qbackingstore.cpp:1333
#41 0x00007fce3e8d6f50 in QWidgetPrivate::syncBackingStore (this=0x17852e0) at kernel/qwidget.cpp:1842
#42 0x00007fce3e8e4184 in QWidget::event (this=0x1770000, event=0x206f600) at kernel/qwidget.cpp:8552
#43 0x00007fce3ec93a66 in QFrame::event (this=0x1770000, e=0x206f600) at widgets/qframe.cpp:557
#44 0x00007fce3ed151fb in QAbstractScrollArea::event (this=0x1770000, e=0x206f600) at widgets/qabstractscrollarea.cpp:996
#45 0x00007fce425ecfe6 in PanelView::event (this=0x1770000, event=0x206f600) at ../../../../plasma/desktop/shell/panelview.cpp:1604
#46 0x00007fce3e8929e4 in QApplicationPrivate::notify_helper (this=0x8e77d0, receiver=0x1770000, e=0x206f600) at kernel/qapplication.cpp:4462
#47 0x00007fce3e8973aa in QApplication::notify (this=<value optimized out>, receiver=0x1770000, e=0x206f600) at kernel/qapplication.cpp:4341
#48 0x00007fce40189866 in KApplication::notify (this=0x8d72b0, receiver=0x1770000, event=0x206f600) at ../../kdeui/kernel/kapplication.cpp:311
#49 0x00007fce3f4d149c in QCoreApplication::notifyInternal (this=0x8d72b0, receiver=0x1770000, event=0x206f600) at kernel/qcoreapplication.cpp:731
#50 0x00007fce3f4d4c25 in sendEvent (receiver=0x1770000, event_type=77, data=0x863b60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#51 QCoreApplicationPrivate::sendPostedEvents (receiver=0x1770000, event_type=77, data=0x863b60) at kernel/qcoreapplication.cpp:1372
#52 0x00007fce3ee8e88a in dispatchPendingUpdateRequests (this=0x8e6490) at ../../include/QtGui/private/../../../src/gui/graphicsview/qgraphicsview_p.h:189
#53 QGraphicsScenePrivate::_q_processDirtyItems (this=0x8e6490) at graphicsview/qgraphicsscene.cpp:510
#54 0x00007fce3ee8ecaa in QGraphicsScene::qt_metacall (this=0x8e4a00, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x2b57eb0) at .moc/release-shared/moc_qgraphicsscene.cpp:130
#55 0x00007fce41e30b65 in Plasma::Corona::qt_metacall (this=0x8e4a00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x2b57eb0) at ./corona.moc:109
#56 0x00007fce425e1065 in DesktopCorona::qt_metacall (this=0x8e4a00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x2b57eb0) at ./desktopcorona.moc:101
#57 0x00007fce3f4e549a in QObject::event (this=0x8e4a00, e=<value optimized out>) at kernel/qobject.cpp:1226
#58 0x00007fce3ee9b58b in QGraphicsScene::event (this=0x8e4a00, event=0x20d9370) at graphicsview/qgraphicsscene.cpp:3544
#59 0x00007fce3e8929e4 in QApplicationPrivate::notify_helper (this=0x8e77d0, receiver=0x8e4a00, e=0x20d9370) at kernel/qapplication.cpp:4462
#60 0x00007fce3e8973aa in QApplication::notify (this=<value optimized out>, receiver=0x8e4a00, e=0x20d9370) at kernel/qapplication.cpp:4341
#61 0x00007fce40189866 in KApplication::notify (this=0x8d72b0, receiver=0x8e4a00, event=0x20d9370) at ../../kdeui/kernel/kapplication.cpp:311
#62 0x00007fce3f4d149c in QCoreApplication::notifyInternal (this=0x8d72b0, receiver=0x8e4a00, event=0x20d9370) at kernel/qcoreapplication.cpp:731
#63 0x00007fce3f4d4c25 in sendEvent (receiver=0x0, event_type=0, data=0x863b60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#64 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x863b60) at kernel/qcoreapplication.cpp:1372
#65 0x00007fce3f4fc253 in sendPostedEvents (s=0x8ebec0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#66 postEventSourceDispatch (s=0x8ebec0) at kernel/qeventdispatcher_glib.cpp:277
#67 0x00007fce36ccfbcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#68 0x00007fce36cd03a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#69 0x00007fce36cd0639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#70 0x00007fce3f4fc3ef in QEventDispatcherGlib::processEvents (this=0x863340, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#71 0x00007fce3e939dfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#72 0x00007fce3f4d0882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#73 0x00007fce3f4d0abc in QEventLoop::exec (this=0x7fffcd5bf7d0, flags=...) at kernel/qeventloop.cpp:201
#74 0x00007fce3f4d4ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#75 0x00007fce425e7897 in kdemain (argc=1, argv=0x7fffcd5bfb98) at ../../../../plasma/desktop/shell/main.cpp:118
#76 0x00007fce42233eff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=1, ubp_av=0x7fffcd5bfb98, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffcd5bfb88) at libc-start.c:226
#77 0x0000000000400669 in _start ()

Possible duplicates by query: bug 273988, bug 273972, bug 273943, bug 273832, bug 273740.

Reported using DrKonqi