Bug 281751

Application: knotify4 (4.0)
KDE Platform Version: 4.7.00 (4.7.0)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
I had GStreamer and VLC installed as phonon backends.
I changed the order (no matter which on top earlier), then I was trying to switch to another tab, after applying the change program crashes.

The crash can be reproduced every time.

-- Backtrace:
Application: KNotify (knotify4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fab0219d780 (LWP 1716))]

Thread 3 (Thread 0x7faaf090b700 (LWP 1719)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007faaf090aae0 in ?? ()
#2  0x00007fff305ff7b2 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 2 (Thread 0x7faab9e1d700 (LWP 2235)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007faaef4f3a30 in ?? () from /usr/lib/libvlccore.so.4
#2  0x00007faafcfc8d8c in start_thread (arg=0x7faab9e1d700) at pthread_create.c:304
#3  0x00007faaff3e204d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fab0219d780 (LWP 1716)):
[KCrash Handler]
#6  0x00007faaef9ec46c in node_create (this=0x226ef40) at /usr/include/qt4/QtCore/qmap.h:453
#7  QMap<Phonon::VLC::MediaController const*, QMap<int, int> >::detach_helper (this=0x226ef40) at /usr/include/qt4/QtCore/qmap.h:760
#8  0x00007faaef9e6c5e in detach (this=0x20b1d68) at /usr/include/qt4/QtCore/qmap.h:202
#9  end (this=0x20b1d68) at /usr/include/qt4/QtCore/qmap.h:373
#10 register_ (this=0x20b1d68) at /build/buildd/phonon-backend-vlc-0.4.0/vlc/globaldescriptioncontainer.h:96
#11 Phonon::VLC::MediaController::MediaController (this=0x20b1d68) at /build/buildd/phonon-backend-vlc-0.4.0/vlc/mediacontroller.cpp:40
#12 0x00007faaef9f2082 in Phonon::VLC::MediaObject::MediaObject (this=0x20b1d50, parent=<value optimized out>) at /build/buildd/phonon-backend-vlc-0.4.0/vlc/mediaobject.cpp:61
#13 0x00007faaef9d94c8 in Phonon::VLC::Backend::createObject (this=0x229beb0, c=<value optimized out>, parent=0x20a5220, args=<value optimized out>) at /build/buildd/phonon-backend-vlc-0.4.0/vlc/backend.cpp:152
#14 0x00007fab01726df1 in Phonon::Factory::createMediaObject (parent=0x20a5220) at ../../phonon/factory.cpp:349
#15 0x00007fab017328d6 in Phonon::MediaObjectPrivate::createBackendObject (this=0x20a54a0) at ../../phonon/mediaobject.cpp:58
#16 0x00007fab01726f59 in Phonon::FactoryPrivate::phononBackendChanged (this=0x20a51e0) at ../../phonon/factory.cpp:313
#17 0x00007fab017272b2 in Phonon::FactoryPrivate::qt_metacall (this=0x20a51e0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff305db0a0) at ./factory.moc:77
#18 0x00007faaffe469fa in QDBusConnectionPrivate::deliverCall (this=0x1fb5a50, object=0x20a51e0, msg=..., metaTypes=..., slotIdx=8) at qdbusintegrator.cpp:942
#19 0x00007faaffe50e4f in QDBusCallDeliveryEvent::placeMetaCall (this=<value optimized out>, object=<value optimized out>) at qdbusintegrator_p.h:103
#20 0x00007faaffb0549a in QObject::event (this=0x20a51e0, e=<value optimized out>) at kernel/qobject.cpp:1226
#21 0x00007fab007229f4 in QApplicationPrivate::notify_helper (this=0x1fc1ad0, receiver=0x20a51e0, e=0x7faab4007ee0) at kernel/qapplication.cpp:4462
#22 0x00007fab007273ba in QApplication::notify (this=<value optimized out>, receiver=0x20a51e0, e=0x7faab4007ee0) at kernel/qapplication.cpp:4341
#23 0x00007fab01b90796 in KApplication::notify (this=0x7fff305dbb20, receiver=0x20a51e0, event=0x7faab4007ee0) at ../../kdeui/kernel/kapplication.cpp:311
#24 0x00007faaffaf149c in QCoreApplication::notifyInternal (this=0x7fff305dbb20, receiver=0x20a51e0, event=0x7faab4007ee0) at kernel/qcoreapplication.cpp:731
#25 0x00007faaffaf4c25 in sendEvent (receiver=0x0, event_type=0, data=0x1f76890) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#26 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1f76890) at kernel/qcoreapplication.cpp:1372
#27 0x00007faaffb1c253 in sendPostedEvents (s=0x1fc45c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#28 postEventSourceDispatch (s=0x1fc45c0) at kernel/qeventdispatcher_glib.cpp:277
#29 0x00007faafcafcbcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007faafcafd3a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007faafcafd639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007faaffb1c3ef in QEventDispatcherGlib::processEvents (this=0x1f76490, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#33 0x00007fab007cc4de in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#34 0x00007faaffaf0882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#35 0x00007faaffaf0abc in QEventLoop::exec (this=0x7fff305dba80, flags=...) at kernel/qeventloop.cpp:201
#36 0x00007faaffaf4ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#37 0x00000000004099f5 in main (argc=1, argv=<value optimized out>) at ../../knotify/main.cpp:73

Reported using DrKonqi