Bug 285471

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic i686
Distribution: Ubuntu 11.10

-- Information about the crash:
I just worked with Tasks and inserted multiple test tasks into the task area in Kontact. When deleting finished tasks, the plasma desktop crashes. I have the akonadi_gcal_resource_2 installed.

Programs open:
Kontact
Kopete
Chrome

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb6ac6730 (LWP 1575))]

Thread 5 (Thread 0xb081db70 (LWP 1576)):
#0  0x00a53d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x0335f7d5 in do_gettime (frac=0xb081d000, sec=0xb081cff8) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x034324b6 in QTimerInfoList::updateCurrentTime (this=0xaff01a7c) at kernel/qeventdispatcher_unix.cpp:339
#4  0x0343280a in QTimerInfoList::timerWait (this=0xaff01a7c, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x03431053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xb081d10c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x034310ed in timerSourcePrepare (source=0xaff01a48, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x0957588c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x09576637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x09576c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x03431b37 in QEventDispatcherGlib::processEvents (this=0xa37b9d0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x034021dd in QEventLoop::processEvents (this=0xb081d290, flags=...) at kernel/qeventloop.cpp:149
#12 0x03402421 in QEventLoop::exec (this=0xb081d290, flags=...) at kernel/qeventloop.cpp:201
#13 0x0330590b in QThread::exec (this=0xa378ed0) at thread/qthread.cpp:498
#14 0x033e2e2d in QInotifyFileSystemWatcherEngine::run (this=0xa378ed0) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x033087b3 in QThreadPrivate::start (arg=0xa378ed0) at thread/qthread_unix.cpp:331
#16 0x01c99d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0x0038b0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 4 (Thread 0xaef3fb70 (LWP 1577)):
#0  0x01c9cd44 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x00398f54 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x09575f1f in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x095768f0 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x09576c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x03431b37 in QEventDispatcherGlib::processEvents (this=0xa4d4e60, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x034021dd in QEventLoop::processEvents (this=0xaef3f290, flags=...) at kernel/qeventloop.cpp:149
#7  0x03402421 in QEventLoop::exec (this=0xaef3f290, flags=...) at kernel/qeventloop.cpp:201
#8  0x0330590b in QThread::exec (this=0x9da7b00) at thread/qthread.cpp:498
#9  0x033e2e2d in QInotifyFileSystemWatcherEngine::run (this=0x9da7b00) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x033087b3 in QThreadPrivate::start (arg=0x9da7b00) at thread/qthread_unix.cpp:331
#11 0x01c99d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x0038b0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xaccbdb70 (LWP 1585)):
#0  0x004a7416 in __kernel_vsyscall ()
#1  0x0037c40e in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0x0958534b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x09576896 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x09576f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x038c8cea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0x0959d5f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0x01c99d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0x0038b0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xac4bcb70 (LWP 1586)):
#0  0x004a7416 in __kernel_vsyscall ()
#1  0x01c9da5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x00398cfc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0x015a49a9 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0x015a49ef in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0x01c99d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0x0038b0ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb6ac6730 (LWP 1575)):
[KCrash Handler]
#7  0x003d2c78 in ?? () from /lib/i386-linux-gnu/libc.so.6
#8  0x03328fd3 in QListData::remove (this=0xadd7040, i=-1) at /usr/include/i386-linux-gnu/bits/string3.h:58
#9  0x02d69e07 in takeAt (i=<optimized out>, this=<optimized out>) at /usr/include/qt4/QtCore/qlist.h:474
#10 Akonadi::EntityTreeModelPrivate::monitoredItemRemoved (this=0xa8e8338, item=...) at ../../akonadi/entitytreemodel_p.cpp:1022
#11 0x02d594d2 in Akonadi::EntityTreeModel::qt_metacall (this=0xa2a5608, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbff44af8) at ./entitytreemodel.moc:168
#12 0x02b8c233 in CalendarSupport::CalendarModel::qt_metacall (this=0xa2a5608, _c=QMetaObject::InvokeMetaMethod, _id=50, _a=0xbff44af8) at moc_calendarmodel.cpp:66
#13 0x03409b7d in metacall (argv=0xbff44af8, idx=50, cl=QMetaObject::InvokeMetaMethod, object=0xa2a5608) at kernel/qmetaobject.cpp:237
#14 QMetaObject::metacall (object=0xa2a5608, cl=QMetaObject::InvokeMetaMethod, idx=50, argv=0xbff44af8) at kernel/qmetaobject.cpp:232
#15 0x03418a6a in QMetaObject::activate (sender=0xa61f5c0, m=0x2ead618, local_signal_index=3, argv=0xbff44af8) at kernel/qobject.cpp:3278
#16 0x02da91a5 in Akonadi::Monitor::itemRemoved (this=0xa61f5c0, _t1=...) at ./monitor.moc:190
#17 0x02dae317 in Akonadi::MonitorPrivate::emitItemNotification (this=0xa9752b0, msg=..., item=..., collection=..., collectionDest=...) at ../../akonadi/monitor_p.cpp:525
#18 0x02daf559 in Akonadi::MonitorPrivate::emitNotification (this=0xa9752b0, msg=...) at ../../akonadi/monitor_p.cpp:284
#19 0x02d06729 in Akonadi::ChangeRecorderPrivate::emitNotification (this=0xa9752b0, msg=...) at ../../akonadi/changerecorder_p.h:60
#20 0x02daf6c4 in Akonadi::MonitorPrivate::dispatchNotifications (this=0xa9752b0) at ../../akonadi/monitor_p.cpp:443
#21 0x02db0349 in Akonadi::MonitorPrivate::slotNotify (this=0xa9752b0, msgs=...) at ../../akonadi/monitor_p.cpp:414
#22 0x02d06ffc in Akonadi::ChangeRecorderPrivate::slotNotify (this=0xa9752b0, msgs=...) at ../../akonadi/changerecorder_p.h:51
#23 0x02da9ae2 in Akonadi::Monitor::qt_metacall (this=0xa61f5c0, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbff44f28) at ./monitor.moc:155
#24 0x02d0592e in Akonadi::ChangeRecorder::qt_metacall (this=0xa61f5c0, _c=QMetaObject::InvokeMetaMethod, _id=26, _a=0xbff44f28) at ./changerecorder.moc:72
#25 0x03409b7d in metacall (argv=0xbff44f28, idx=26, cl=QMetaObject::InvokeMetaMethod, object=0xa61f5c0) at kernel/qmetaobject.cpp:237
#26 QMetaObject::metacall (object=0xa61f5c0, cl=QMetaObject::InvokeMetaMethod, idx=26, argv=0xbff44f28) at kernel/qmetaobject.cpp:232
#27 0x03418a6a in QMetaObject::activate (sender=0xab0df68, m=0x2eaf718, local_signal_index=0, argv=0xbff44f28) at kernel/qobject.cpp:3278
#28 0x02e2ff25 in OrgFreedesktopAkonadiNotificationSourceInterface::notify (this=0xab0df68, _t1=...) at notificationsourceinterface.moc:91
#29 0x02e2ff93 in OrgFreedesktopAkonadiNotificationSourceInterface::qt_metacall (this=0xab0df68, _c=QMetaObject::InvokeMetaMethod, _id=192647116, _a=0xbff4505c) at notificationsourceinterface.moc:77
#30 0x008a5d87 in QDBusConnectionPrivate::deliverCall (this=0x9b88c98, object=0xab0df68, msg=..., metaTypes=..., slotIdx=192647116) at qdbusintegrator.cpp:942
#31 0x008afc26 in QDBusCallDeliveryEvent::placeMetaCall (this=0xaf2a860, object=0xab0df68) at qdbusintegrator_p.h:103
#32 0x0341bb52 in QObject::event (this=0xab0df68, e=0xaf2a860) at kernel/qobject.cpp:1217
#33 0x08b75d54 in notify_helper (e=0xaf2a860, receiver=0xab0df68, this=0x9b9cf10) at kernel/qapplication.cpp:4486
#34 QApplicationPrivate::notify_helper (this=0x9b9cf10, receiver=0xab0df68, e=0xaf2a860) at kernel/qapplication.cpp:4458
#35 0x08b7b103 in QApplication::notify (this=0xaf2a860, receiver=0xab0df68, e=0xaf2a860) at kernel/qapplication.cpp:3886
#36 0x011de681 in KApplication::notify (this=0x9b8d570, receiver=0xab0df68, event=0xaf2a860) at ../../kdeui/kernel/kapplication.cpp:311
#37 0x0340319e in QCoreApplication::notifyInternal (this=0x9b8d570, receiver=0xab0df68, event=0xaf2a860) at kernel/qcoreapplication.cpp:787
#38 0x03406f93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#39 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9b422e0) at kernel/qcoreapplication.cpp:1428
#40 0x034070ec in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1321
#41 0x034316a4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#42 postEventSourceDispatch (s=0x9b99c90) at kernel/qeventdispatcher_glib.cpp:277
#43 0x0957625f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#44 0x09576990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#45 0x09576c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#46 0x03431ada in QEventDispatcherGlib::processEvents (this=0x9b43218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#47 0x08c2de3a in QGuiEventDispatcherGlib::processEvents (this=0x9b43218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#48 0x034021dd in QEventLoop::processEvents (this=0xbff456f4, flags=...) at kernel/qeventloop.cpp:149
#49 0x03402421 in QEventLoop::exec (this=0xbff456f4, flags=...) at kernel/qeventloop.cpp:201
#50 0x0340719d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#51 0x08b738f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#52 0x00b6218b in kdemain (argc=1, argv=0xbff458f4) at ../../../../plasma/desktop/shell/main.cpp:120
#53 0x0804850b in main (argc=1, argv=0xbff458f4) at plasma-desktop_dummy.cpp:3

This bug may be a duplicate of or related to bug 279101.

Possible duplicates by query: bug 284223, bug 283111, bug 279101.

Reported using DrKonqi