Application: polkit-kde-authentication-agent-1 (0.99.0)
KDE Platform Version: 4.6.00 (4.6.0)
Qt Version: 4.7.1
Operating System: Linux 2.6.38-1-generic x86_64
Distribution: Ubuntu natty (development branch)

-- Information about the crash:
- What I was doing when the application crashed:

i had this crash when i rebooting my system (i had this crash when i do logout too)

The crash can be reproduced some of the time.

-- Backtrace:
Application: PolicyKit1-KDE (polkit-kde-authentication-agent-1), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f289e428820 (LWP 2141))]

Thread 4 (Thread 0x7f288c75f700 (LWP 2194)):
#0  __libc_enable_asynccancel () at ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:66
#1  0x00007f289b7a7268 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:85
#2  0x00007f28997b92a0 in g_main_context_iterate (context=0x23c22b0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.27.93/glib/gmain.c:3097
#3  0x00007f28997b9b7a in g_main_loop_run (loop=0x23c2270) at /build/buildd/glib2.0-2.27.93/glib/gmain.c:3307
#4  0x00000000022a7f80 in ?? ()
#5  0x00000000023c2390 in ?? ()
#6  0x00007f289b7c3790 in ?? () at forward.c:182 from /lib/libc.so.6
#7  0x00007f2899a637e0 in ?? () from /lib/libglib-2.0.so.0
#8  0x00007f2899a637a8 in test_run_name () from /lib/libglib-2.0.so.0
#9  0x00007f289b7c3760 in ?? () at forward.c:178 from /lib/libc.so.6
#10 0x0000000000000003 in ?? ()
#11 0x00007f28992aab54 in gdbus_shared_thread_func (data=<value optimized out>) at /build/buildd/glib2.0-2.27.93/gio/gdbusprivate.c:277
#12 0x00007f28997e06d4 in g_thread_create_proxy (data=0x7f289b7c3760) at /build/buildd/glib2.0-2.27.93/glib/gthread.c:1895
#13 0x00007f289856bd8c in start_thread (arg=0x7f288c75f700) at pthread_create.c:304
#14 0x00007f289b7b439d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#15 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f288b557700 (LWP 2932)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:39
#1  0x00007f289b4d165a in v4l1_read () from /usr/lib/libv4l1.so.0
#2  0x00007f289e04b949 in read () from /usr/lib/libv4l/v4l1compat.so
#3  0x00007f28997babfb in child_watch_helper_thread (data=<value optimized out>) at /build/buildd/glib2.0-2.27.93/glib/gmain.c:4309
#4  0x00007f28997e06d4 in g_thread_create_proxy (data=0x23ea860) at /build/buildd/glib2.0-2.27.93/glib/gthread.c:1895
#5  0x00007f289856bd8c in start_thread (arg=0x7f288b557700) at pthread_create.c:304
#6  0x00007f289b7b439d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f28892bb700 (LWP 2939)):
#0  __pthread_mutex_lock (mutex=0x286f488) at pthread_mutex_lock.c:47
#1  0x00007f28997b77e9 in g_main_context_acquire (context=<value optimized out>) at /build/buildd/glib2.0-2.27.93/glib/gmain.c:2547
#2  0x00007f28997b90a4 in g_main_context_iterate (context=0x286f480, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.27.93/glib/gmain.c:3057
#3  0x00007f28997b97c9 in g_main_context_iteration (context=0x286f480, may_block=<value optimized out>) at /build/buildd/glib2.0-2.27.93/glib/gmain.c:3155
#4  0x00007f289cb7ba26 in QEventDispatcherGlib::processEvents (this=0x246f930, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#5  0x00007f289cb4fed2 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f289cb5010c in QEventLoop::exec (this=0x7f28892bad30, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f289ca67214 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#8  0x00007f289cb323df in QInotifyFileSystemWatcherEngine::run (this=0x286ef70) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f289ca699ce in QThreadPrivate::start (arg=0x286ef70) at thread/qthread_unix.cpp:285
#10 0x00007f289856bd8c in start_thread (arg=0x7f28892bb700) at pthread_create.c:304
#11 0x00007f289b7b439d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f289e428820 (LWP 2141)):
[KCrash Handler]
#6  0x00007f2899557a88 in type_node_check_conformities_UorL (type_instance=<value optimized out>, iface_type=<value optimized out>) at /build/buildd/glib2.0-2.27.93/gobject/gtype.c:3433
#7  type_node_conforms_to_U (type_instance=<value optimized out>, iface_type=<value optimized out>) at /build/buildd/glib2.0-2.27.93/gobject/gtype.c:3475
#8  g_type_check_instance_is_a (type_instance=<value optimized out>, iface_type=<value optimized out>) at /build/buildd/glib2.0-2.27.93/gobject/gtype.c:3957
#9  0x00007f2899532ceb in g_object_unref (_object=0x23c3d20) at /build/buildd/glib2.0-2.27.93/gobject/gobject.c:2668
#10 0x00007f2898dd12ab in ?? () from /usr/lib/libpolkit-agent-1.so.0
#11 0x00007f2899532e34 in g_object_unref (_object=0x240baa0) at /build/buildd/glib2.0-2.27.93/gobject/gobject.c:2734
#12 0x00007f289d5d0be4 in PolkitQt1::Agent::Session::~Session() () from /usr/lib/libpolkit-qt-agent-1.so.1
#13 0x00007f289d5d0c29 in PolkitQt1::Agent::Session::~Session() () from /usr/lib/libpolkit-qt-agent-1.so.1
#14 0x00007f289cb64a78 in QObject::event (this=0x24a0180, e=<value optimized out>) at kernel/qobject.cpp:1202
#15 0x00007f289bf15024 in QApplicationPrivate::notify_helper (this=0x22a4710, receiver=0x24a0180, e=0x2810ce0) at kernel/qapplication.cpp:4445
#16 0x00007f289bf1995a in QApplication::notify (this=<value optimized out>, receiver=0x24a0180, e=0x2810ce0) at kernel/qapplication.cpp:4324
#17 0x00007f289dc2c6d6 in KApplication::notify (this=0x7fff78277320, receiver=0x24a0180, event=0x2810ce0) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f289cb50aec in QCoreApplication::notifyInternal (this=0x7fff78277320, receiver=0x24a0180, event=0x2810ce0) at kernel/qcoreapplication.cpp:732
#19 0x00007f289cb54275 in sendEvent (receiver=0x0, event_type=52, data=0x22818a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=52, data=0x22818a0) at kernel/qcoreapplication.cpp:1373
#21 0x00007f289cb5455e in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1016
#22 0x000000000040a573 in _start ()

Reported using DrKonqi