Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.00 (4.6.0)
Qt Version: 4.7.1
Operating System: Linux 2.6.38-5-generic x86_64
Distribution: Ubuntu Natty (development branch)

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

Application has creashed after login on Ubuntu Maverick amd64, KDE 4.6.0.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f7bbb45b7a0 (LWP 1592))]

Thread 4 (Thread 0x7f7b9fa35700 (LWP 1601)):
#0  0x00007f7baf74f418 in g_main_context_iterate (context=0x2bb86a0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3091
#1  0x00007f7baf74f6a9 in g_main_context_iteration (context=0x2bb86a0, may_block=1) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3154
#2  0x00007f7bb816daa6 in QEventDispatcherGlib::processEvents (this=0x2b496e0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#3  0x00007f7bb8141f12 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#4  0x00007f7bb814214c in QEventLoop::exec (this=0x7f7b9fa34db0, flags=...) at kernel/qeventloop.cpp:201
#5  0x00007f7bb8059224 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#6  0x00007f7bb812446f in QInotifyFileSystemWatcherEngine::run (this=0x2b7a850) at io/qfilesystemwatcher_inotify.cpp:248
#7  0x00007f7bb805b9de in QThreadPrivate::start (arg=0x2b7a850) at thread/qthread_unix.cpp:285
#8  0x00007f7bb0052d8c in start_thread (arg=0x7f7b9fa35700) at pthread_create.c:304
#9  0x00007f7bbad5617d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f7b97733700 (LWP 1603)):
#0  0x00007f7bbad49003 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f7baf74f180 in g_main_context_poll (context=0x2c050d0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3404
#2  g_main_context_iterate (context=0x2c050d0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3086
#3  0x00007f7baf74f6a9 in g_main_context_iteration (context=0x2c050d0, may_block=1) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3154
#4  0x00007f7bb816daa6 in QEventDispatcherGlib::processEvents (this=0x2bfe9f0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#5  0x00007f7bb8141f12 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f7bb814214c in QEventLoop::exec (this=0x7f7b97732db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f7bb8059224 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#8  0x00007f7bb812446f in QInotifyFileSystemWatcherEngine::run (this=0x2bef3e0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f7bb805b9de in QThreadPrivate::start (arg=0x2bef3e0) at thread/qthread_unix.cpp:285
#10 0x00007f7bb0052d8c in start_thread (arg=0x7f7b97733700) at pthread_create.c:304
#11 0x00007f7bbad5617d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f7b95344700 (LWP 1608)):
#0  0x00007f7baf74e479 in g_main_context_query (context=0x2dc93c0, max_priority=2147483647, timeout=0x7f7b95343d88, fds=0x2dc9f30, n_fds=3) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:2825
#1  0x00007f7baf74f07d in g_main_context_iterate (context=0x2dc93c0, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3073
#2  0x00007f7baf74fa5a in g_main_loop_run (loop=0x2dc93a0) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3299
#3  0x00007f7b9601cc74 in gdbus_shared_thread_func (data=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./gio/gdbusprivate.c:276
#4  0x00007f7baf776394 in g_thread_create_proxy (data=0x2dc6150) at /build/buildd/glib2.0-2.28.1/./glib/gthread.c:1897
#5  0x00007f7bb0052d8c in start_thread (arg=0x7f7b95344700) at pthread_create.c:304
#6  0x00007f7bbad5617d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f7bbb45b7a0 (LWP 1592)):
[KCrash Handler]
#6  operator== (this=<value optimized out>) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#7  isNull (this=<value optimized out>) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:550
#8  operator! (this=<value optimized out>) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:556
#9  Plasma::Applet::extender (this=<value optimized out>) at ../../plasma/applet.cpp:773
#10 0x00007f7bba8a8303 in Plasma::ExtenderItem::returnToSource (this=0x2df3890) at ../../plasma/extenders/extenderitem.cpp:631
#11 0x00007f7bba8cb43f in Plasma::ExtenderApplet::~ExtenderApplet (this=0x2a902e0, __in_chrg=<value optimized out>) at ../../plasma/private/extenderapplet.cpp:42
#12 0x00007f7bba8cb4a9 in Plasma::ExtenderApplet::~ExtenderApplet (this=0x2a902e0, __in_chrg=<value optimized out>) at ../../plasma/private/extenderapplet.cpp:45
#13 0x00007f7bb8156ad8 in QObject::event (this=0x2a902e0, e=<value optimized out>) at kernel/qobject.cpp:1202
#14 0x00007f7bb7b2af2b in QGraphicsWidget::event (this=0x2a902e0, event=0x32a7a40) at graphicsview/qgraphicswidget.cpp:1407
#15 0x00007f7bb7508044 in QApplicationPrivate::notify_helper (this=0x24ca560, receiver=0x2a902e0, e=0x32a7a40) at kernel/qapplication.cpp:4445
#16 0x00007f7bb750c97a in QApplication::notify (this=<value optimized out>, receiver=0x2a902e0, e=0x32a7a40) at kernel/qapplication.cpp:4324
#17 0x00007f7bb8df96b6 in KApplication::notify (this=0x24bf9d0, receiver=0x2a902e0, event=0x32a7a40) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x00007f7bb8142b2c in QCoreApplication::notifyInternal (this=0x24bf9d0, receiver=0x2a902e0, event=0x32a7a40) at kernel/qcoreapplication.cpp:732
#19 0x00007f7bb81462b5 in sendEvent (receiver=0x0, event_type=0, data=0x2470b60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x2470b60) at kernel/qcoreapplication.cpp:1373
#21 0x00007f7bb816d8b3 in sendPostedEvents (s=0x24ccdc0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#22 postEventSourceDispatch (s=0x24ccdc0) at kernel/qeventdispatcher_glib.cpp:277
#23 0x00007f7baf74ec2d in g_main_dispatch (context=0x24ccce0) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:2440
#24 g_main_context_dispatch (context=0x24ccce0) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3013
#25 0x00007f7baf74f418 in g_main_context_iterate (context=0x24ccce0, block=<value optimized out>, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3091
#26 0x00007f7baf74f6a9 in g_main_context_iteration (context=0x24ccce0, may_block=1) at /build/buildd/glib2.0-2.28.1/./glib/gmain.c:3154
#27 0x00007f7bb816da4f in QEventDispatcherGlib::processEvents (this=0x2470250, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#28 0x00007f7bb75adeee in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007f7bb8141f12 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007f7bb814214c in QEventLoop::exec (this=0x7fff94025af0, flags=...) at kernel/qeventloop.cpp:201
#31 0x00007f7bb814655b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#32 0x00007f7bbb0545f7 in kdemain (argc=1, argv=0x7fff94025eb8) at ../../../../plasma/desktop/shell/main.cpp:118
#33 0x00007f7bbac8eefe in __libc_start_main (main=0x400740 <main(int, char**)>, argc=1, ubp_av=0x7fff94025eb8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff94025ea8) at libc-start.c:226
#34 0x0000000000400669 in _start ()

Possible duplicates by query: bug 242527.

Reported using DrKonqi