Bug 274617

Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
Closing amarok and showing desktop grid
- Unusual behavior I noticed:
very slow performance in plasma... 64bits kubuntu with intel i5?

The crash can be reproduced some of the time.

-- Backtrace:
Application: Shell de escritorio Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fbc3170a7a0 (LWP 1491))]

Thread 4 (Thread 0x7fbc0ed7e700 (LWP 1494)):
#0  0x00007fbc30ffff03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fbc259e2104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbc259e2639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbc2e20e446 in QEventDispatcherGlib::processEvents (this=0x11860d0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fbc2e1e2882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fbc2e1e2abc in QEventLoop::exec (this=0x7fbc0ed7ddb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fbc2e0f9924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007fbc2e1c4c2f in QInotifyFileSystemWatcherEngine::run (this=0x1185c10) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fbc2e0fc175 in QThreadPrivate::start (arg=0x1185c10) at thread/qthread_unix.cpp:320
#9  0x00007fbc262e5d8c in start_thread (arg=0x7fbc0ed7e700) at pthread_create.c:304
#10 0x00007fbc3100d04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fbc0cb6b700 (LWP 1495)):
#0  0x00007fbc30ffff03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fbc259e2104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbc259e2639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbc2e20e446 in QEventDispatcherGlib::processEvents (this=0x12c0c90, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fbc2e1e2882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fbc2e1e2abc in QEventLoop::exec (this=0x7fbc0cb6adb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fbc2e0f9924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007fbc2e1c4c2f in QInotifyFileSystemWatcherEngine::run (this=0x12704e0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fbc2e0fc175 in QThreadPrivate::start (arg=0x12704e0) at thread/qthread_unix.cpp:320
#9  0x00007fbc262e5d8c in start_thread (arg=0x7fbc0cb6b700) at pthread_create.c:304
#10 0x00007fbc3100d04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fbc04958700 (LWP 1501)):
#0  0x00007fbc30ffff03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fbc259e2104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbc259e29f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbc05a6fc44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fbc25a093e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fbc262e5d8c in start_thread (arg=0x7fbc04958700) at pthread_create.c:304
#6  0x00007fbc3100d04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fbc3170a7a0 (LWP 1491)):
[KCrash Handler]
#6  0x00007fbc2ee425df in QString (this=0x1e40075, group=0, state=0) at /usr/include/qt4/QtCore/qstring.h:728
#7  KIconEffect::fingerprint (this=0x1e40075, group=0, state=0) at ../../kdeui/icons/kiconeffect.cpp:169
#8  0x00007fbc2ee47feb in KIconLoaderPrivate::makeCacheKey (this=<value optimized out>, name=..., group=KIconLoader::Desktop, overlays=..., size=24, state=0) at ../../kdeui/icons/kiconloader.cpp:782
#9  0x00007fbc2ee4ed03 in KIconLoader::loadIcon (this=0x1b09e20, _name=<value optimized out>, group=KIconLoader::Desktop, size=24, state=0, overlays=..., path_store=0x0, canReturnNull=false) at ../../kdeui/icons/kiconloader.cpp:1226
#10 0x00007fbc2ee46c99 in KIconEngine::pixmap (this=<value optimized out>, size=..., mode=<value optimized out>, state=<value optimized out>) at ../../kdeui/icons/kiconengine.cpp:93
#11 0x00007fbc2d64ddd5 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 0x00007fbc30bef099 in Plasma::IconWidgetPrivate::decoration (this=0x103b3f0, option=<value optimized out>, useHoverEffect=false, usePressedEffect=false) at ../../plasma/widgets/iconwidget.cpp:812
#13 0x00007fbc30bf4e51 in Plasma::IconWidget::paint (this=0x1e2ae60, painter=0x7fffc5b86cc0, option=0x9bfd68, widget=<value optimized out>) at ../../plasma/widgets/iconwidget.cpp:1128
#14 0x00007fbc175ff3e9 in SystemTray::DBusSystemTrayWidget::paint (this=0x1e2ae60, painter=0x7fffc5b86cc0, option=0x9bfd68, widget=<value optimized out>) at ../../../../../plasma/generic/applets/systemtray/protocols/dbussystemtray/dbussystemtraywidget.cpp:189
#15 0x00007fbc2db9419d in _q_paintItem (item=<value optimized out>, painter=0x7fffc5b86cc0, option=0x9bfd68, widget=0x0, useWindowOpacity=<value optimized out>, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4314
#16 0x00007fbc2db944b0 in _q_paintIntoCache (pix=0x7fffc5b871f0, item=0x1e2ae70, pixmapExposed=..., itemToPixmap=..., renderHints=..., option=0x9bfd68, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4352
#17 0x00007fbc2dba7ce8 in QGraphicsScenePrivate::drawItemHelper (this=0x9bfb40, item=0x1e2ae70, painter=0x7fffc5b89200, option=0x9bfd68, widget=<value optimized out>, painterStateProtection=true) at graphicsview/qgraphicsscene.cpp:4690
#18 0x00007fbc2dba88ba in QGraphicsScenePrivate::draw (this=0x9bfb40, item=0x1e2ae70, painter=0x7fffc5b89200, viewTransform=0x7fffc5b88f90, transformPtr=0x7fffc5b878b0, exposedRegion=0x18d1b90, widget=0x12192e0, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4962
#19 0x00007fbc2dba9565 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x9bfb40, item=0x1e2ae70, painter=0x7fffc5b89200, viewTransform=0x7fffc5b88f90, exposedRegion=0x18d1b90, widget=0x12192e0, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#20 0x00007fbc2dba8730 in QGraphicsScenePrivate::draw (this=0x9bfb40, item=0xbfdbf0, painter=0x7fffc5b89200, viewTransform=0x7fffc5b88f90, transformPtr=0x7fffc5b87eb0, exposedRegion=0x18d1b90, widget=0x12192e0, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4979
#21 0x00007fbc2dba9565 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x9bfb40, item=0xbfdbf0, painter=0x7fffc5b89200, viewTransform=0x7fffc5b88f90, exposedRegion=0x18d1b90, widget=0x12192e0, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#22 0x00007fbc2dba8730 in QGraphicsScenePrivate::draw (this=0x9bfb40, item=0xbfd610, painter=0x7fffc5b89200, viewTransform=0x7fffc5b88f90, transformPtr=0x7fffc5b884b0, exposedRegion=0x18d1b90, widget=0x12192e0, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4979
#23 0x00007fbc2dba9565 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x9bfb40, item=0xbfd610, painter=0x7fffc5b89200, viewTransform=0x7fffc5b88f90, exposedRegion=0x18d1b90, widget=0x12192e0, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#24 0x00007fbc2dba8730 in QGraphicsScenePrivate::draw (this=0x9bfb40, item=0xa67610, painter=0x7fffc5b89200, viewTransform=0x7fffc5b88f90, transformPtr=0x7fffc5b88ab0, exposedRegion=0x18d1b90, widget=0x12192e0, opacity=1, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4979
#25 0x00007fbc2dba9565 in QGraphicsScenePrivate::drawSubtreeRecursive (this=0x9bfb40, item=0xa67610, painter=0x7fffc5b89200, viewTransform=0x7fffc5b88f90, exposedRegion=0x18d1b90, widget=0x12192e0, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4853
#26 0x00007fbc2dba9d94 in QGraphicsScenePrivate::drawItems (this=0x9bfb40, painter=0x7fffc5b89200, viewTransform=0x7fffc5b88f90, exposedRegion=0x18d1b90, widget=0x12192e0) at graphicsview/qgraphicsscene.cpp:4735
#27 0x00007fbc2dbc6bd2 in QGraphicsView::paintEvent (this=<value optimized out>, event=<value optimized out>) at graphicsview/qgraphicsview.cpp:3469
#28 0x00007fbc2d5f5c6a in QWidget::event (this=0x17165e0, event=0x7fffc5b89b20) at kernel/qwidget.cpp:8405
#29 0x00007fbc2d9a5a66 in QFrame::event (this=0x17165e0, e=0x7fffc5b89b20) at widgets/qframe.cpp:557
#30 0x00007fbc2dbc7e8b in QGraphicsView::viewportEvent (this=0x17165e0, event=0x7fffc5b89b20) at graphicsview/qgraphicsview.cpp:2864
#31 0x00007fbc2e1e3627 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x12192e0, event=0x7fffc5b89b20) at kernel/qcoreapplication.cpp:846
#32 0x00007fbc2d5a49b1 in QApplicationPrivate::notify_helper (this=0x943f70, receiver=0x12192e0, e=0x7fffc5b89b20) at kernel/qapplication.cpp:4458
#33 0x00007fbc2d5a93aa in QApplication::notify (this=<value optimized out>, receiver=0x12192e0, e=0x7fffc5b89b20) at kernel/qapplication.cpp:4341
#34 0x00007fbc2ee9b866 in KApplication::notify (this=0x9147e0, receiver=0x12192e0, event=0x7fffc5b89b20) at ../../kdeui/kernel/kapplication.cpp:311
#35 0x00007fbc2e1e349c in QCoreApplication::notifyInternal (this=0x9147e0, receiver=0x12192e0, event=0x7fffc5b89b20) at kernel/qcoreapplication.cpp:731
#36 0x00007fbc2d5f2abd in sendSpontaneousEvent (this=0x18d1c80, pdev=0x115fdf8, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x132e850) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#37 QWidgetPrivate::drawWidget (this=0x18d1c80, pdev=0x115fdf8, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x132e850) at kernel/qwidget.cpp:5492
#38 0x00007fbc2d5f36d2 in QWidgetPrivate::paintSiblingsRecursive (this=0x18d1700, pdev=0x115fdf8, siblings=..., index=<value optimized out>, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x132e850) at kernel/qwidget.cpp:5699
#39 0x00007fbc2d5f358a in QWidgetPrivate::paintSiblingsRecursive (this=0x18d1700, pdev=0x115fdf8, siblings=..., index=4, rgn=..., offset=..., flags=4, sharedPainter=0x0, backingStore=0x132e850) at kernel/qwidget.cpp:5686
#40 0x00007fbc2d5f27fc in QWidgetPrivate::drawWidget (this=0x18d1700, pdev=0x115fdf8, rgn=..., offset=..., flags=<value optimized out>, sharedPainter=0x0, backingStore=0x132e850) at kernel/qwidget.cpp:5545
#41 0x00007fbc2d7b72fb in QWidgetBackingStore::sync (this=0x132e850) at painting/qbackingstore.cpp:1333
#42 0x00007fbc2d5e8f50 in QWidgetPrivate::syncBackingStore (this=0x18d1700) at kernel/qwidget.cpp:1842
#43 0x00007fbc2d5f6184 in QWidget::event (this=0x17165e0, event=0x1b09e20) at kernel/qwidget.cpp:8552
#44 0x00007fbc2d9a5a66 in QFrame::event (this=0x17165e0, e=0x1b09e20) at widgets/qframe.cpp:557
#45 0x00007fbc2da271fb in QAbstractScrollArea::event (this=0x17165e0, e=0x1b09e20) at widgets/qabstractscrollarea.cpp:996
#46 0x00007fbc312fefe6 in PanelView::event (this=0x17165e0, event=0x1b09e20) at ../../../../plasma/desktop/shell/panelview.cpp:1604
#47 0x00007fbc2d5a49e4 in QApplicationPrivate::notify_helper (this=0x943f70, receiver=0x17165e0, e=0x1b09e20) at kernel/qapplication.cpp:4462
#48 0x00007fbc2d5a93aa in QApplication::notify (this=<value optimized out>, receiver=0x17165e0, e=0x1b09e20) at kernel/qapplication.cpp:4341
#49 0x00007fbc2ee9b866 in KApplication::notify (this=0x9147e0, receiver=0x17165e0, event=0x1b09e20) at ../../kdeui/kernel/kapplication.cpp:311
#50 0x00007fbc2e1e349c in QCoreApplication::notifyInternal (this=0x9147e0, receiver=0x17165e0, event=0x1b09e20) at kernel/qcoreapplication.cpp:731
#51 0x00007fbc2e1e6c25 in sendEvent (receiver=0x17165e0, event_type=77, data=0x8c0b60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#52 QCoreApplicationPrivate::sendPostedEvents (receiver=0x17165e0, event_type=77, data=0x8c0b60) at kernel/qcoreapplication.cpp:1372
#53 0x00007fbc2dba088a in dispatchPendingUpdateRequests (this=0x9bfb40) at ../../include/QtGui/private/../../../src/gui/graphicsview/qgraphicsview_p.h:189
#54 QGraphicsScenePrivate::_q_processDirtyItems (this=0x9bfb40) at graphicsview/qgraphicsscene.cpp:510
#55 0x00007fbc2dba0caa in QGraphicsScene::qt_metacall (this=0xa26f60, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x2c69de0) at .moc/release-shared/moc_qgraphicsscene.cpp:130
#56 0x00007fbc30b42b65 in Plasma::Corona::qt_metacall (this=0xa26f60, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x2c69de0) at ./corona.moc:109
#57 0x00007fbc312f3065 in DesktopCorona::qt_metacall (this=0xa26f60, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x2c69de0) at ./desktopcorona.moc:101
#58 0x00007fbc2e1f749a in QObject::event (this=0xa26f60, e=<value optimized out>) at kernel/qobject.cpp:1226
#59 0x00007fbc2dbad58b in QGraphicsScene::event (this=0xa26f60, event=0x1e324e0) at graphicsview/qgraphicsscene.cpp:3544
#60 0x00007fbc2d5a49e4 in QApplicationPrivate::notify_helper (this=0x943f70, receiver=0xa26f60, e=0x1e324e0) at kernel/qapplication.cpp:4462
#61 0x00007fbc2d5a93aa in QApplication::notify (this=<value optimized out>, receiver=0xa26f60, e=0x1e324e0) at kernel/qapplication.cpp:4341
#62 0x00007fbc2ee9b866 in KApplication::notify (this=0x9147e0, receiver=0xa26f60, event=0x1e324e0) at ../../kdeui/kernel/kapplication.cpp:311
#63 0x00007fbc2e1e349c in QCoreApplication::notifyInternal (this=0x9147e0, receiver=0xa26f60, event=0x1e324e0) at kernel/qcoreapplication.cpp:731
#64 0x00007fbc2e1e6c25 in sendEvent (receiver=0x0, event_type=0, data=0x8c0b60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#65 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8c0b60) at kernel/qcoreapplication.cpp:1372
#66 0x00007fbc2e20e253 in sendPostedEvents (s=0x946960) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#67 postEventSourceDispatch (s=0x946960) at kernel/qeventdispatcher_glib.cpp:277
#68 0x00007fbc259e1bcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#69 0x00007fbc259e23a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#70 0x00007fbc259e2639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#71 0x00007fbc2e20e3ef in QEventDispatcherGlib::processEvents (this=0x8c0340, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#72 0x00007fbc2d64bdfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#73 0x00007fbc2e1e2882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#74 0x00007fbc2e1e2abc in QEventLoop::exec (this=0x7fffc5b8bc80, flags=...) at kernel/qeventloop.cpp:201
#75 0x00007fbc2e1e6ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#76 0x00007fbc312f9897 in kdemain (argc=1, argv=0x7fffc5b8c048) at ../../../../plasma/desktop/shell/main.cpp:118
#77 0x00007fbc30f45eff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=1, ubp_av=0x7fffc5b8c048, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffc5b8c038) at libc-start.c:226
#78 0x0000000000400669 in _start ()

This bug may be a duplicate of or related to bug 258706.

Possible duplicates by query: bug 274582, bug 274548, bug 274516, bug 274515, bug 274348.

Reported using DrKonqi