Application: akonadi_nepomuk_feeder (4.8)
KDE Platform Version: 4.8.5 (4.8.5)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-30-generic x86_64
Distribution: Ubuntu 12.04.1 LTS

-- Information about the crash:
feeder used in the background,
running through Kontact.
PC memory 16 GB,
System 64-bit Kubuntu 12.04, no code modification.

The crash can be reproduced every time.

-- Backtrace:
Application: Akonadi Nepomuk Feeder (akonadi_nepomuk_feeder), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#6  ref (this=0x85b1140) at /usr/include/qt4/QtCore/qatomic_x86_64.h:121
#7  QByteArray (a=..., this=0x7fff0f6d28d0) at /usr/include/qt4/QtCore/qbytearray.h:440
#8  Akonadi::NotificationMessage::sessionId (this=0x7f31e468a758) at ../../libs/notificationmessage.cpp:125
#9  0x00007f31f579bad0 in Akonadi::MonitorPrivate::acceptNotification (this=0x1569ad0, msg=...) at ../../akonadi/monitor_p.cpp:160
#10 0x00007f31f579e4f5 in Akonadi::MonitorPrivate::cleanOldNotifications (this=0x1569ad0) at ../../akonadi/monitor_p.cpp:219
#11 0x00007f31f579e58b in Akonadi::MonitorPrivate::emitNotification (this=0x1569ad0, msg=...) at ../../akonadi/monitor_p.cpp:292
#12 0x00007f31f56fcb31 in Akonadi::ChangeRecorderPrivate::emitNotification (this=0x1569ad0, msg=...) at ../../akonadi/changerecorder_p.h:60
#13 0x00007f31f579e7ed in Akonadi::MonitorPrivate::dispatchNotifications (this=0x1569ad0) at ../../akonadi/monitor_p.cpp:447
#14 0x00007f31f5312281 in QMetaObject::activate (sender=0x15713b0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#15 0x00007f31f570345d in Akonadi::EntityCache<Akonadi::Collection, Akonadi::CollectionFetchJob, Akonadi::CollectionFetchScope>::processResult (this=0x15713b0, job=<optimized out>) at ../../akonadi/entitycache_p.h:192
#16 0x00007f31f5312281 in QMetaObject::activate (sender=0x1534520, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff0f6d2ec0) at kernel/qobject.cpp:3547
#17 0x00007f31f5be5152 in KJob::result (this=<optimized out>, _t1=0x1534520) at ./kjob.moc:208
#18 0x00007f31f5be5190 in KJob::emitResult (this=0x1534520) at ../../kdecore/jobs/kjob.cpp:318
#19 0x00007f31f5317446 in QObject::event (this=0x1534520, e=<optimized out>) at kernel/qobject.cpp:1195
#20 0x00007f31f2ef2894 in notify_helper (e=0x156d180, receiver=0x1534520, this=0x13626b0) at kernel/qapplication.cpp:4559
#21 QApplicationPrivate::notify_helper (this=0x13626b0, receiver=0x1534520, e=0x156d180) at kernel/qapplication.cpp:4531
#22 0x00007f31f2ef7713 in QApplication::notify (this=0x7fff0f6d3860, receiver=0x1534520, e=0x156d180) at kernel/qapplication.cpp:4420
#23 0x00007f31f61c03f6 in KApplication::notify (this=0x7fff0f6d3860, receiver=0x1534520, event=0x156d180) at ../../kdeui/kernel/kapplication.cpp:311
#24 0x00007f31f52fde9c in QCoreApplication::notifyInternal (this=0x7fff0f6d3860, receiver=0x1534520, event=0x156d180) at kernel/qcoreapplication.cpp:876
#25 0x00007f31f5301c6a in sendEvent (event=0x156d180, receiver=0x1534520) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#26 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x133d060) at kernel/qcoreapplication.cpp:1500
#27 0x00007f31f532cf93 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#28 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#29 0x00007f31efdefd53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f31efdf00a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f31efdf0164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f31f532d3bf in QEventDispatcherGlib::processEvents (this=0x133e4d0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#33 0x00007f31f2f9ad5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0x00007f31f52fcc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#35 0x00007f31f52fced7 in QEventLoop::exec (this=0x7fff0f6d37e0, flags=...) at kernel/qeventloop.cpp:204
#36 0x00007f31f5301f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#37 0x00007f31f56d84d6 in Akonadi::AgentBase::init (r=0x1573910) at ../../akonadi/agentbase.cpp:564
#38 0x000000000040ac66 in Akonadi::AgentBase::init<Akonadi::NepomukFeederAgent> (argc=<optimized out>, argv=<optimized out>) at /usr/include/akonadi/agentbase.h:342
#39 0x00007f31f43e976d in __libc_start_main (main=0x407130 <main(int, char**)>, argc=3, ubp_av=0x7fff0f6d3978, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0f6d3968) at libc-start.c:226
#40 0x0000000000407161 in _start ()

Reported using DrKonqi