Application: nepomukservicestub (0.2)
KDE Platform Version: 4.7.00 (4.7.0)
Qt Version: 4.7.3
Operating System: Linux 3.0.0-10-generic x86_64
Distribution: Ubuntu oneiric (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
Nothing special, usualy crash appears when I ulocked my screen, I searced for duplicated reports but stacktrace was different.

The crash can be reproduced every time.

-- Backtrace:
Application: Nepomuk Service Stub (nepomukservicestub), signal: Aborted
__lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
	in ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
[Current thread is 1 (Thread 0x7f24f3794780 (LWP 3819))]

Thread 2 (Thread 0x7f24e343e700 (LWP 3831)):
[KCrash Handler]
#6  0x00007f24f0d4f3a5 in __GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#7  0x00007f24f0d52b0b in __GI_abort () at abort.c:92
#8  0x00007f24f0d87113 in __libc_message (do_abort=2, fmt=0x7f24f0e780d8 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
#9  0x00007f24f0d91a96 in malloc_printerr (action=3, str=0x7f24f0e78210 "double free or corruption (fasttop)", ptr=<optimized out>) at malloc.c:6283
#10 0x00007f24f0d95d7c in __GI___libc_free (mem=<optimized out>) at malloc.c:3738
#11 0x00007f24f31d704c in QString::free (d=0x7f24dc044a30) at tools/qstring.cpp:1185
#12 0x00007f24f31d75a2 in QString::operator= (this=0x215bf78, other=...) at tools/qstring.cpp:1359
#13 0x00007f24e3c88769 in ?? () from /usr/lib/kde4/nepomukstrigiservice.so
#14 0x00007f24e3c8b18b in ?? () from /usr/lib/kde4/nepomukstrigiservice.so
#15 0x00007f24f328ce5a in QMetaObject::activate (sender=0x7f24dc044b10, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7f24e343d430) at kernel/qobject.cpp:3278
#16 0x00007f24f2af38ff in KJob::finished (this=<optimized out>, _t1=0x7f24dc044b10) at ./kjob.moc:173
#17 0x00007f24f2af3ad5 in KJob::emitResult (this=0x7f24dc044b10) at ../../kdecore/jobs/kjob.cpp:310
#18 0x00007f24e3c915aa in ?? () from /usr/lib/kde4/nepomukstrigiservice.so
#19 0x00007f24e3c9169f in ?? () from /usr/lib/kde4/nepomukstrigiservice.so
#20 0x00007f24f328ce5a in QMetaObject::activate (sender=0x7f24dc050240, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7f24e343d590) at kernel/qobject.cpp:3278
#21 0x00007f24f3219641 in QProcess::finished (this=<optimized out>, _t1=0) at .moc/release-shared/moc_qprocess.cpp:135
#22 0x00007f24f321e382 in QProcessPrivate::_q_processDied (this=0x7f24dc03eda0) at io/qprocess.cpp:1050
#23 0x00007f24f321e999 in QProcess::qt_metacall (this=0x7f24dc050240, _c=QMetaObject::InvokeMetaMethod, _id=13, _a=0x7f24e343d710) at .moc/release-shared/moc_qprocess.cpp:115
#24 0x00007f24f2adbfd8 in KProcess::qt_metacall (this=0x7f24dc050240, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=<optimized out>) at ./kprocess.moc:69
#25 0x00007f24f328ce5a in QMetaObject::activate (sender=0x7f24dc0420f0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7f24e343d710) at kernel/qobject.cpp:3278
#26 0x00007f24f32d654e in QSocketNotifier::activated (this=<optimized out>, _t1=41) at .moc/release-shared/moc_qsocketnotifier.cpp:89
#27 0x00007f24f3294b0b in QSocketNotifier::event (this=0x7f24dc0420f0, e=0x7f24e343dbf0) at kernel/qsocketnotifier.cpp:317
#28 0x00007f24f15b9154 in notify_helper (e=0x7f24e343dbf0, receiver=0x7f24dc0420f0, this=0x1f2fa60) at kernel/qapplication.cpp:4467
#29 QApplicationPrivate::notify_helper (this=0x1f2fa60, receiver=0x7f24dc0420f0, e=0x7f24e343dbf0) at kernel/qapplication.cpp:4439
#30 0x00007f24f15bdfc1 in QApplication::notify (this=0x7fff3e34f460, receiver=0x7f24dc0420f0, e=0x7f24e343dbf0) at kernel/qapplication.cpp:4346
#31 0x00007f24f2593e36 in KApplication::notify (this=0x7fff3e34f460, receiver=0x7f24dc0420f0, event=0x7f24e343dbf0) at ../../kdeui/kernel/kapplication.cpp:311
#32 0x00007f24f3279b5c in QCoreApplication::notifyInternal (this=0x7fff3e34f460, receiver=0x7f24dc0420f0, event=0x7f24e343dbf0) at kernel/qcoreapplication.cpp:731
#33 0x00007f24f32a45c7 in sendEvent (event=0x7f24e343dbf0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#34 socketNotifierSourceDispatch (source=0x209d280) at kernel/qeventdispatcher_glib.cpp:110
#35 0x00007f24f0020e5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f24f0021658 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f24f0021829 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f24f32a4ee6 in QEventDispatcherGlib::processEvents (this=0x20cafa0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#39 0x00007f24f3278d52 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#40 0x00007f24f3278f57 in QEventLoop::exec (this=0x7f24e343de00, flags=...) at kernel/qeventloop.cpp:201
#41 0x00007f24f319021f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:492
#42 0x00007f24f3192ca5 in QThreadPrivate::start (arg=0x210f2c0) at thread/qthread_unix.cpp:320
#43 0x00007f24f0b03edc in start_thread (arg=0x7f24e343e700) at pthread_create.c:304
#44 0x00007f24f0dfa89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#45 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f24f3794780 (LWP 3819)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f24f0d979df in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f24f0d95d71 in __GI___libc_free (mem=0x7f24dc000020) at malloc.c:3736
#3  0x00007f24f31d704c in QString::free (d=0x7f24dc03d9e0) at tools/qstring.cpp:1185
#4  0x00007f24f3299a19 in ~QString (this=0x7f24dc039760, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qstring.h:883
#5  v_clear<QString> (d=0x7f24dc039760) at ../../include/QtCore/private/../../../src/corelib/kernel/qvariant_p.h:144
#6  clear (d=0x7f24dc039760) at kernel/qvariant.cpp:199
#7  0x00007f24f2ead194 in node_destruct (to=0x7f24dc042108, from=0x7f24dc042108, this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:418
#8  free (data=0x7f24dc0420f0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:742
#9  ~QList (this=<optimized out>, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:717
#10 QList<QVariant>::~QList (this=<optimized out>, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:714
#11 0x00007f24f2eb6072 in QDBusConnectionPrivate::deliverCall (this=0x2041800, object=0x2169ba0, msg=..., metaTypes=..., slotIdx=18) at qdbusintegrator.cpp:917
#12 0x00007f24f2eb719c in QDBusConnectionPrivate::activateCall (this=0x2041800, object=0x2169ba0, flags=337, msg=...) at qdbusintegrator.cpp:852
#13 0x00007f24f2eb7a62 in QDBusConnectionPrivate::activateObject (this=0x2041800, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1410
#14 0x00007f24f2eb7b38 in QDBusActivateObjectEvent::placeMetaCall (this=0x7f24dc03be70) at qdbusintegrator.cpp:1524
#15 0x00007f24f32909fe in QObject::event (this=0x21533c0, e=<optimized out>) at kernel/qobject.cpp:1217
#16 0x00007f24f15b9154 in notify_helper (e=0x7f24dc03be70, receiver=0x21533c0, this=0x1f2fa60) at kernel/qapplication.cpp:4467
#17 QApplicationPrivate::notify_helper (this=0x1f2fa60, receiver=0x21533c0, e=0x7f24dc03be70) at kernel/qapplication.cpp:4439
#18 0x00007f24f15bdfc1 in QApplication::notify (this=0x7fff3e34f460, receiver=0x21533c0, e=0x7f24dc03be70) at kernel/qapplication.cpp:4346
#19 0x00007f24f2593e36 in KApplication::notify (this=0x7fff3e34f460, receiver=0x21533c0, event=0x7f24dc03be70) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007f24f3279b5c in QCoreApplication::notifyInternal (this=0x7fff3e34f460, receiver=0x21533c0, event=0x7f24dc03be70) at kernel/qcoreapplication.cpp:731
#21 0x00007f24f327d57f in sendEvent (event=0x7f24dc03be70, receiver=0x21533c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#22 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1f12620) at kernel/qcoreapplication.cpp:1372
#23 0x00007f24f32a4a83 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#24 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277
#25 0x00007f24f0020e5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f24f0021658 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f24f0021829 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f24f32a4ee6 in QEventDispatcherGlib::processEvents (this=0x1f13ce0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#29 0x00007f24f16607ae in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007f24f3278d52 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007f24f3278f57 in QEventLoop::exec (this=0x7fff3e34f2d0, flags=...) at kernel/qeventloop.cpp:201
#32 0x00007f24f327d7e9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#33 0x00000000004039a9 in ?? ()
#34 0x00007f24f0d3a30d in __libc_start_main (main=0x403080, argc=2, ubp_av=0x7fff3e34f908, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff3e34f8f8) at libc-start.c:226
#35 0x0000000000403cc9 in _start ()

Possible duplicates by query: bug 281042, bug 280516, bug 280443, bug 275298, bug 257248.

Reported using DrKonqi