Application: plasma-desktop (4.10.95)
KDE Platform Version: 4.10.95
Qt Version: 4.8.4
Operating System: Linux 3.8.0-26-generic x86_64
Distribution: Ubuntu 13.04

-- Information about the crash:
Plasma desktop crashed after logging into the system, then restarted automatically.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4e5958b7c0 (LWP 2679))]

Thread 4 (Thread 0x7f4e28422700 (LWP 2708)):
#0  0x00007f4e4c9a2075 in __GI___pthread_mutex_lock (mutex=0x7f4e20000a60) at pthread_mutex_lock.c:95
#1  0x00007f4e4c2dc5c1 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4e4c29d1c2 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4e4c29d304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4e55a5a036 in QEventDispatcherGlib::processEvents (this=0x7f4e200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007f4e55a2a38f in QEventLoop::processEvents (this=this@entry=0x7f4e28421d90, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f4e55a2a618 in QEventLoop::exec (this=this@entry=0x7f4e28421d90, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f4e5592c410 in QThread::exec (this=this@entry=0x297b3e0) at thread/qthread.cpp:542
#8  0x00007f4e55a0bedf in QInotifyFileSystemWatcherEngine::run (this=0x297b3e0) at io/qfilesystemwatcher_inotify.cpp:256
#9  0x00007f4e5592ebec in QThreadPrivate::start (arg=0x297b3e0) at thread/qthread_unix.cpp:338
#10 0x00007f4e4c99ff8e in start_thread (arg=0x7f4e28422700) at pthread_create.c:311
#11 0x00007f4e58e7be1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7f4e0f944700 (LWP 2755)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4e522bdb27 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f4e522bdb59 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f4e4c99ff8e in start_thread (arg=0x7f4e0f944700) at pthread_create.c:311
#4  0x00007f4e58e7be1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f4e25dfc700 (LWP 3262)):
#0  0x00007f4e4c9a2071 in __GI___pthread_mutex_lock (mutex=0x7f4e140026c0) at pthread_mutex_lock.c:95
#1  0x00007f4e4c2dc5c1 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4e4c29d2f0 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4e55a5a036 in QEventDispatcherGlib::processEvents (this=0x7f4e14002d20, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007f4e55a2a38f in QEventLoop::processEvents (this=this@entry=0x7f4e25dfbd90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f4e55a2a618 in QEventLoop::exec (this=this@entry=0x7f4e25dfbd90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f4e5592c410 in QThread::exec (this=this@entry=0x29696e0) at thread/qthread.cpp:542
#7  0x00007f4e55a0bedf in QInotifyFileSystemWatcherEngine::run (this=0x29696e0) at io/qfilesystemwatcher_inotify.cpp:256
#8  0x00007f4e5592ebec in QThreadPrivate::start (arg=0x29696e0) at thread/qthread_unix.cpp:338
#9  0x00007f4e4c99ff8e in start_thread (arg=0x7f4e25dfc700) at pthread_create.c:311
#10 0x00007f4e58e7be1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f4e5958b7c0 (LWP 2679)):
[KCrash Handler]
#6  0x00007f4e38d985f2 in agiName (i=i@entry=0x563e140) at ../../../applets/icontasks/taskgroupitem.cpp:1260
#7  0x00007f4e38d998e2 in TaskGroupItem::matchingItem (this=<optimized out>, from=from@entry=0x1779ec0) at ../../../applets/icontasks/taskgroupitem.cpp:1278
#8  0x00007f4e38d95a2d in AbstractTaskItem::paint (this=0x9f82ad0, painter=0x7fffb54e5150, option=0x16ca7c8) at ../../../applets/icontasks/abstracttaskitem.cpp:1232
#9  0x00007f4e553b5b79 in _q_paintItem (item=item@entry=0x9f82ae0, painter=painter@entry=0x7fffb54e5150, option=option@entry=0x16ca7c8, widget=widget@entry=0x19811b0, useWindowOpacity=useWindowOpacity@entry=true, painterStateProtection=painterStateProtection@entry=true) at graphicsview/qgraphicsscene.cpp:4335
#10 0x00007f4e553c5765 in QGraphicsScenePrivate::drawItemHelper (this=this@entry=0x16ca5a0, item=item@entry=0x9f82ae0, painter=painter@entry=0x7fffb54e5150, option=option@entry=0x16ca7c8, widget=widget@entry=0x19811b0, painterStateProtection=<optimized out>) at graphicsview/qgraphicsscene.cpp:4431
#11 0x00007f4e553c8100 in QGraphicsScenePrivate::draw (this=this@entry=0x16ca5a0, item=item@entry=0x9f82ae0, painter=painter@entry=0x7fffb54e5150, viewTransform=viewTransform@entry=0x7fffb54e52e0, transformPtr=transformPtr@entry=0x7fffb54e3fb0, exposedRegion=exposedRegion@entry=0x19b47e8, widget=0x19811b0, opacity=opacity@entry=1, effectTransform=effectTransform@entry=0x0, wasDirtyParentSceneTransform=wasDirtyParentSceneTransform@entry=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4966
#12 0x00007f4e553c87d5 in QGraphicsScenePrivate::drawSubtreeRecursive (this=this@entry=0x16ca5a0, item=0x9f82ae0, painter=painter@entry=0x7fffb54e5150, viewTransform=viewTransform@entry=0x7fffb54e52e0, exposedRegion=exposedRegion@entry=0x19b47e8, widget=widget@entry=0x19811b0, parentOpacity=parentOpacity@entry=1, effectTransform=effectTransform@entry=0x0) at graphicsview/qgraphicsscene.cpp:4857
#13 0x00007f4e553c7c65 in QGraphicsScenePrivate::draw (this=this@entry=0x16ca5a0, item=item@entry=0x31154e0, painter=painter@entry=0x7fffb54e5150, viewTransform=viewTransform@entry=0x7fffb54e52e0, transformPtr=transformPtr@entry=0x7fffb54e4470, exposedRegion=exposedRegion@entry=0x19b47e8, widget=0x19811b0, opacity=opacity@entry=1, effectTransform=effectTransform@entry=0x0, wasDirtyParentSceneTransform=wasDirtyParentSceneTransform@entry=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4996
#14 0x00007f4e553c87d5 in QGraphicsScenePrivate::drawSubtreeRecursive (this=this@entry=0x16ca5a0, item=0x31154e0, painter=painter@entry=0x7fffb54e5150, viewTransform=viewTransform@entry=0x7fffb54e52e0, exposedRegion=exposedRegion@entry=0x19b47e8, widget=widget@entry=0x19811b0, parentOpacity=parentOpacity@entry=1, effectTransform=effectTransform@entry=0x0) at graphicsview/qgraphicsscene.cpp:4857
#15 0x00007f4e553c7c65 in QGraphicsScenePrivate::draw (this=this@entry=0x16ca5a0, item=item@entry=0x1b8dfc0, painter=painter@entry=0x7fffb54e5150, viewTransform=viewTransform@entry=0x7fffb54e52e0, transformPtr=transformPtr@entry=0x7fffb54e4930, exposedRegion=exposedRegion@entry=0x19b47e8, widget=0x19811b0, opacity=opacity@entry=1, effectTransform=effectTransform@entry=0x0, wasDirtyParentSceneTransform=wasDirtyParentSceneTransform@entry=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4996
#16 0x00007f4e553c87d5 in QGraphicsScenePrivate::drawSubtreeRecursive (this=this@entry=0x16ca5a0, item=0x1b8dfc0, painter=painter@entry=0x7fffb54e5150, viewTransform=viewTransform@entry=0x7fffb54e52e0, exposedRegion=exposedRegion@entry=0x19b47e8, widget=widget@entry=0x19811b0, parentOpacity=parentOpacity@entry=1, effectTransform=effectTransform@entry=0x0) at graphicsview/qgraphicsscene.cpp:4857
#17 0x00007f4e553c7c65 in QGraphicsScenePrivate::draw (this=this@entry=0x16ca5a0, item=item@entry=0x1bbbd40, painter=painter@entry=0x7fffb54e5150, viewTransform=viewTransform@entry=0x7fffb54e52e0, transformPtr=transformPtr@entry=0x7fffb54e4df0, exposedRegion=exposedRegion@entry=0x19b47e8, widget=0x19811b0, opacity=opacity@entry=1, effectTransform=effectTransform@entry=0x0, wasDirtyParentSceneTransform=wasDirtyParentSceneTransform@entry=false, drawItem=true) at graphicsview/qgraphicsscene.cpp:4996
#18 0x00007f4e553c87d5 in QGraphicsScenePrivate::drawSubtreeRecursive (this=this@entry=0x16ca5a0, item=0x1bbbd40, painter=painter@entry=0x7fffb54e5150, viewTransform=viewTransform@entry=0x7fffb54e52e0, exposedRegion=exposedRegion@entry=0x19b47e8, widget=widget@entry=0x19811b0, parentOpacity=parentOpacity@entry=1, effectTransform=effectTransform@entry=0x0) at graphicsview/qgraphicsscene.cpp:4857
#19 0x00007f4e553c92be in QGraphicsScenePrivate::drawItems (this=0x16ca5a0, painter=painter@entry=0x7fffb54e5150, viewTransform=viewTransform@entry=0x7fffb54e52e0, exposedRegion=exposedRegion@entry=0x19b47e8, widget=0x19811b0) at graphicsview/qgraphicsscene.cpp:4739
#20 0x00007f4e553e5c38 in QGraphicsView::paintEvent (this=0x197f9e0, event=<optimized out>) at graphicsview/qgraphicsview.cpp:3471
#21 0x00007f4e54e1ea3e in QWidget::event (this=this@entry=0x197f9e0, event=event@entry=0x7fffb54e5da0) at kernel/qwidget.cpp:8532
#22 0x00007f4e551d1466 in QFrame::event (this=0x197f9e0, e=0x7fffb54e5da0) at widgets/qframe.cpp:557
#23 0x00007f4e553e922b in QGraphicsView::viewportEvent (this=0x197f9e0, event=0x7fffb54e5da0) at graphicsview/qgraphicsview.cpp:2866
#24 0x00007f4e55a2b7a6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x15f3d00, receiver=receiver@entry=0x19811b0, event=event@entry=0x7fffb54e5da0) at kernel/qcoreapplication.cpp:1056
#25 0x00007f4e54dd18bc in QApplicationPrivate::notify_helper (this=this@entry=0x15f3d00, receiver=receiver@entry=0x19811b0, e=e@entry=0x7fffb54e5da0) at kernel/qapplication.cpp:4563
#26 0x00007f4e54dd425b in QApplication::notify (this=this@entry=0x15931a0, receiver=receiver@entry=0x19811b0, e=e@entry=0x7fffb54e5da0) at kernel/qapplication.cpp:4428
#27 0x00007f4e566ed916 in KApplication::notify (this=0x15931a0, receiver=0x19811b0, event=0x7fffb54e5da0) at ../../kdeui/kernel/kapplication.cpp:311
#28 0x00007f4e55a2b63e in QCoreApplication::notifyInternal (this=0x15931a0, receiver=receiver@entry=0x19811b0, event=event@entry=0x7fffb54e5da0) at kernel/qcoreapplication.cpp:946
#29 0x00007f4e54e236b4 in sendSpontaneousEvent (event=0x7fffb54e5da0, receiver=0x19811b0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#30 QWidgetPrivate::drawWidget (this=this@entry=0x5a5a660, pdev=pdev@entry=0x53eceb0, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x5a5ade0) at kernel/qwidget.cpp:5598
#31 0x00007f4e54e241af in QWidgetPrivate::paintSiblingsRecursive (this=this@entry=0x19b4360, pdev=pdev@entry=0x53eceb0, siblings=..., index=<optimized out>, rgn=..., offset=..., flags=flags@entry=4, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x5a5ade0) at kernel/qwidget.cpp:5807
#32 0x00007f4e54e23243 in QWidgetPrivate::drawWidget (this=0x19b4360, pdev=0x53eceb0, rgn=..., offset=..., flags=flags@entry=5, sharedPainter=sharedPainter@entry=0x0, backingStore=backingStore@entry=0x5a5ade0) at kernel/qwidget.cpp:5651
#33 0x00007f4e54fe8f48 in QWidgetBackingStore::sync (this=0x5a5ade0) at painting/qbackingstore.cpp:1373
#34 0x00007f4e54e12060 in QWidgetPrivate::syncBackingStore (this=this@entry=0x19b4360) at kernel/qwidget.cpp:1896
#35 0x00007f4e54e1eee4 in QWidget::event (this=this@entry=0x197f9e0, event=event@entry=0x9dc6160) at kernel/qwidget.cpp:8679
#36 0x00007f4e551d1466 in QFrame::event (this=this@entry=0x197f9e0, e=e@entry=0x9dc6160) at widgets/qframe.cpp:557
#37 0x00007f4e55251a2b in QAbstractScrollArea::event (this=0x197f9e0, e=0x9dc6160) at widgets/qabstractscrollarea.cpp:996
#38 0x00007f4e54dd18ec in QApplicationPrivate::notify_helper (this=this@entry=0x15f3d00, receiver=receiver@entry=0x197f9e0, e=e@entry=0x9dc6160) at kernel/qapplication.cpp:4567
#39 0x00007f4e54dd425b in QApplication::notify (this=this@entry=0x15931a0, receiver=receiver@entry=0x197f9e0, e=e@entry=0x9dc6160) at kernel/qapplication.cpp:4428
#40 0x00007f4e566ed916 in KApplication::notify (this=0x15931a0, receiver=0x197f9e0, event=0x9dc6160) at ../../kdeui/kernel/kapplication.cpp:311
#41 0x00007f4e55a2b63e in QCoreApplication::notifyInternal (this=0x15931a0, receiver=receiver@entry=0x197f9e0, event=event@entry=0x9dc6160) at kernel/qcoreapplication.cpp:946
#42 0x00007f4e55a2f171 in sendEvent (event=0x9dc6160, receiver=0x197f9e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#43 QCoreApplicationPrivate::sendPostedEvents (receiver=0x197f9e0, event_type=event_type@entry=77, data=0x14cf1f0) at kernel/qcoreapplication.cpp:1570
#44 0x00007f4e55a2f4a3 in QCoreApplication::sendPostedEvents (receiver=<optimized out>, event_type=event_type@entry=77) at kernel/qcoreapplication.cpp:1463
#45 0x00007f4e553beb42 in dispatchPendingUpdateRequests (this=0x19b4360) at ../../include/QtGui/private/../../../src/gui/graphicsview/qgraphicsview_p.h:200
#46 QGraphicsScenePrivate::_q_processDirtyItems (this=0x16ca5a0) at graphicsview/qgraphicsscene.cpp:515
#47 0x00007f4e553cbde9 in qt_static_metacall (_a=<optimized out>, _id=<optimized out>, _o=<optimized out>, _c=<optimized out>) at .moc/release-shared/moc_qgraphicsscene.cpp:107
#48 QGraphicsScene::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at .moc/release-shared/moc_qgraphicsscene.cpp:86
#49 0x00007f4e55a455be in QObject::event (this=this@entry=0x180c040, e=e@entry=0x9d87c50) at kernel/qobject.cpp:1194
#50 0x00007f4e553cf209 in QGraphicsScene::event (this=0x180c040, event=0x9d87c50) at graphicsview/qgraphicsscene.cpp:3565
#51 0x00007f4e54dd18ec in QApplicationPrivate::notify_helper (this=this@entry=0x15f3d00, receiver=receiver@entry=0x180c040, e=e@entry=0x9d87c50) at kernel/qapplication.cpp:4567
#52 0x00007f4e54dd425b in QApplication::notify (this=this@entry=0x15931a0, receiver=receiver@entry=0x180c040, e=e@entry=0x9d87c50) at kernel/qapplication.cpp:4428
#53 0x00007f4e566ed916 in KApplication::notify (this=0x15931a0, receiver=0x180c040, event=0x9d87c50) at ../../kdeui/kernel/kapplication.cpp:311
#54 0x00007f4e55a2b63e in QCoreApplication::notifyInternal (this=0x15931a0, receiver=receiver@entry=0x180c040, event=event@entry=0x9d87c50) at kernel/qcoreapplication.cpp:946
#55 0x00007f4e55a2f171 in sendEvent (event=0x9d87c50, receiver=0x180c040) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#56 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x14cf1f0) at kernel/qcoreapplication.cpp:1570
#57 0x00007f4e55a2f4a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#58 0x00007f4e55a59e83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#59 postEventSourceDispatch (s=0x15f8570) at kernel/qeventdispatcher_glib.cpp:279
#60 0x00007f4e4c29cf05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#61 0x00007f4e4c29d248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#62 0x00007f4e4c29d304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#63 0x00007f4e55a5a016 in QEventDispatcherGlib::processEvents (this=0x14d0ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#64 0x00007f4e54e7713e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#65 0x00007f4e55a2a38f in QEventLoop::processEvents (this=this@entry=0x7fffb54e77b0, flags=...) at kernel/qeventloop.cpp:149
#66 0x00007f4e55a2a618 in QEventLoop::exec (this=this@entry=0x7fffb54e77b0, flags=...) at kernel/qeventloop.cpp:204
#67 0x00007f4e55a2fcf6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#68 0x00007f4e54dcfffc in QApplication::exec () at kernel/qapplication.cpp:3828
#69 0x00007f4e591873fb in kdemain (argc=1, argv=0x7fffb54e7aa8) at ../../../../plasma/desktop/shell/main.cpp:126
#70 0x00007f4e58da3ea5 in __libc_start_main (main=0x4006e0 <main(int, char**)>, argc=1, ubp_av=0x7fffb54e7aa8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb54e7a98) at libc-start.c:260
#71 0x0000000000400711 in _start ()

This bug may be a duplicate of or related to bug 321855.

Possible duplicates by query: bug 321855, bug 320744, bug 318647.

Reported using DrKonqi