Application: kded4 (4.12.0)
KDE Platform Version: 4.12.0
Qt Version: 4.8.4
Operating System: Linux 3.12.0-7-generic x86_64
Distribution: Ubuntu Trusty Tahr (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
just started my plasma-desktop session - the first thing a see after ksplash is the crashhandler, when i restart kded4, just after a little while it crashes again
tried with a new user and guestuser

system is kubuntu 14.04-dev

The crash can be reproduced every time.

-- Backtrace:
Application: KDE-Dienst (kded4), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
To enable execution of this file add
	add-auto-load-safe-path /lib/x86_64-linux-gnu/libglib-2.0.so.0.3902.0-gdb.py
line to your configuration file "/tmp/guest-dcvCEJ/.gdbinit".
To completely disable this security protection add
	set auto-load safe-path /
line to your configuration file "/tmp/guest-dcvCEJ/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
	info "(gdb)Auto-loading safe path"
[Current thread is 1 (Thread 0x7ff77dbd07c0 (LWP 5167))]

Thread 7 (Thread 0x7ff7623b8700 (LWP 5169)):
#0  0x00007ff77b437d5d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ff77857f3d0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff77853f824 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff77853fc8b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff77853fdfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff77c8706c6 in QEventDispatcherGlib::processEvents (this=0x7ff75c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007ff77c84227f in QEventLoop::processEvents (this=this@entry=0x7ff7623b7e20, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007ff77c842575 in QEventLoop::exec (this=this@entry=0x7ff7623b7e20, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007ff77c74185f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007ff77c743eff in QThreadPrivate::start (arg=0xdd3370) at thread/qthread_unix.cpp:338
#10 0x00007ff778c1b182 in start_thread (arg=0x7ff7623b8700) at pthread_create.c:312
#11 0x00007ff77b446a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7ff758f14700 (LWP 5176)):
#0  0x00007ff778c1e7ee in __pthread_mutex_unlock_usercnt (decr=1, mutex=0x7ff754000a60) at pthread_mutex_unlock.c:57
#1  __GI___pthread_mutex_unlock (mutex=0x7ff754000a60) at pthread_mutex_unlock.c:310
#2  0x00007ff778580151 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff77853f730 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff77853fc8b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff77853fdfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ff77c8706c6 in QEventDispatcherGlib::processEvents (this=0x7ff7540008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0x00007ff77c84227f in QEventLoop::processEvents (this=this@entry=0x7ff758f13de0, flags=...) at kernel/qeventloop.cpp:149
#8  0x00007ff77c842575 in QEventLoop::exec (this=this@entry=0x7ff758f13de0, flags=...) at kernel/qeventloop.cpp:204
#9  0x00007ff77c74185f in QThread::exec (this=this@entry=0xd931f0) at thread/qthread.cpp:542
#10 0x00007ff77c823ab3 in QInotifyFileSystemWatcherEngine::run (this=0xd931f0) at io/qfilesystemwatcher_inotify.cpp:265
#11 0x00007ff77c743eff in QThreadPrivate::start (arg=0xd931f0) at thread/qthread_unix.cpp:338
#12 0x00007ff778c1b182 in start_thread (arg=0x7ff758f14700) at pthread_create.c:312
#13 0x00007ff77b446a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7ff751b44700 (LWP 5185)):
#0  0x00007ff77b437d5d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ff77857f3d0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff77853f824 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff77853fc8b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff77853fdfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff77c8706c6 in QEventDispatcherGlib::processEvents (this=0x7ff73c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007ff77c84227f in QEventLoop::processEvents (this=this@entry=0x7ff751b43e20, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007ff77c842575 in QEventLoop::exec (this=this@entry=0x7ff751b43e20, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007ff77c74185f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007ff77c743eff in QThreadPrivate::start (arg=0xec1600) at thread/qthread_unix.cpp:338
#10 0x00007ff778c1b182 in start_thread (arg=0x7ff751b44700) at pthread_create.c:312
#11 0x00007ff77b446a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7ff743224700 (LWP 5249)):
#0  0x00007ff77857fddd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff778580149 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff77853fc06 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff77854015a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff74372ad26 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007ff778564ca5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ff778c1b182 in start_thread (arg=0x7ff743224700) at pthread_create.c:312
#7  0x00007ff77b446a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7ff742817700 (LWP 5250)):
#0  0x00007ff778c1d569 in __GI___pthread_mutex_lock (mutex=0x7ff730000a60) at ../nptl/pthread_mutex_lock.c:125
#1  0x00007ff778580121 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff77853f58b in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff77853fc62 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff77853fdfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff77c8706c6 in QEventDispatcherGlib::processEvents (this=0x7ff7300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007ff77c84227f in QEventLoop::processEvents (this=this@entry=0x7ff742816de0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007ff77c842575 in QEventLoop::exec (this=this@entry=0x7ff742816de0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007ff77c74185f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007ff75b9880c7 in KCupsConnection::run() () from /usr/lib/libkcupslib.so
#10 0x00007ff77c743eff in QThreadPrivate::start (arg=0xddc280) at thread/qthread_unix.cpp:338
#11 0x00007ff778c1b182 in start_thread (arg=0x7ff742817700) at pthread_create.c:312
#12 0x00007ff77b446a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7ff742016700 (LWP 5251)):
#0  0x00007ff77857fdd0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff778580119 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff77853ef88 in g_main_context_release () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff77853fca1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff77853fdfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff77c8706c6 in QEventDispatcherGlib::processEvents (this=0x7ff7340008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007ff77c84227f in QEventLoop::processEvents (this=this@entry=0x7ff742015e20, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007ff77c842575 in QEventLoop::exec (this=this@entry=0x7ff742015e20, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007ff77c74185f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007ff77c743eff in QThreadPrivate::start (arg=0xee2120) at thread/qthread_unix.cpp:338
#10 0x00007ff778c1b182 in start_thread (arg=0x7ff742016700) at pthread_create.c:312
#11 0x00007ff77b446a6d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7ff77dbd07c0 (LWP 5167)):
[KCrash Handler]
#6  nl_object_get_id_attrs (obj=0x7ff740bdd3c0 <route_obj_ops>) at /build/buildd/libnl3-3.2.21/./lib/object.c:523
#7  0x00007ff740be2ba1 in ?? () from /usr/lib/ntrack/modules/ntrack-libnl3_x.so
#8  0x00007ff740be318d in _ntrack_arch_process_data () from /usr/lib/ntrack/modules/ntrack-libnl3_x.so
#9  0x00007ff740fef08b in QNtrack::socketActivated(int) () from /usr/lib/libntrack-qt4.so.1
#10 0x00007ff77c8576d8 in QMetaObject::activate (sender=sender@entry=0x106c690, m=m@entry=0x7ff77cba6a40 <QSocketNotifier::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7fff5115e800) at kernel/qobject.cpp:3539
#11 0x00007ff77c8a1f7e in QSocketNotifier::activated (this=this@entry=0x106c690, _t1=32) at .moc/release-shared/moc_qsocketnotifier.cpp:103
#12 0x00007ff77c86044b in QSocketNotifier::event (this=0x106c690, e=0x7fff5115eb30) at kernel/qsocketnotifier.cpp:317
#13 0x00007ff77bbe0dac in QApplicationPrivate::notify_helper (this=this@entry=0xc13990, receiver=receiver@entry=0x106c690, e=e@entry=0x7fff5115eb30) at kernel/qapplication.cpp:4567
#14 0x00007ff77bbe7420 in QApplication::notify (this=this@entry=0x7fff5115eea0, receiver=receiver@entry=0x106c690, e=e@entry=0x7fff5115eb30) at kernel/qapplication.cpp:4353
#15 0x00007ff77d5c1a8a in KApplication::notify (this=0x7fff5115eea0, receiver=0x106c690, event=0x7fff5115eb30) at ../../kdeui/kernel/kapplication.cpp:311
#16 0x00007ff77c84354d in QCoreApplication::notifyInternal (this=0x7fff5115eea0, receiver=0x106c690, event=event@entry=0x7fff5115eb30) at kernel/qcoreapplication.cpp:946
#17 0x00007ff77c8711e0 in sendEvent (event=0x7fff5115eb30, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#18 socketNotifierSourceDispatch (source=0xc13050) at kernel/qeventdispatcher_glib.cpp:110
#19 0x00007ff77853fb14 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007ff77853fd58 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007ff77853fdfc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007ff77c8706c6 in QEventDispatcherGlib::processEvents (this=0xb7f670, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#23 0x00007ff77bc828c6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007ff77c84227f in QEventLoop::processEvents (this=this@entry=0x7fff5115ed70, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007ff77c842575 in QEventLoop::exec (this=this@entry=0x7fff5115ed70, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007ff77c847ad9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#27 0x00007ff77bbdf2fc in QApplication::exec () at kernel/qapplication.cpp:3828
#28 0x00007ff76854694b in kdemain (argc=1, argv=0xbe5fb0) at ../../kded/kded.cpp:925
#29 0x00000000004083f7 in launch (argc=argc@entry=1, _name=_name@entry=0x40afe5 "kded4", args=args@entry=0x0, cwd=cwd@entry=0x0, envc=envc@entry=0, envs=<optimized out>, envs@entry=0x0, reset_env=reset_env@entry=false, tty=tty@entry=0x0, avoid_loops=avoid_loops@entry=false, startup_id_str=startup_id_str@entry=0x40aecd "0") at ../../kinit/kinit.cpp:738
#30 0x00000000004059a3 in main (argc=4, argv=<optimized out>, envp=0x7fff5115f600) at ../../kinit/kinit.cpp:1853


Reproducible: Always