Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic x86_64
Distribution: Ubuntu 11.10

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

Plasma Desktop has crashed when sending an e-mail in Kontact.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fa0cdb907a0 (LWP 2038))]

Thread 3 (Thread 0x7fa0af757700 (LWP 2039)):
#0  0x00007fa0cd480773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fa0c1a0af68 in g_main_context_poll (n_fds=1, fds=0x7fa0a8001260, timeout=-1, context=0x2b1d050, priority=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3402
#2  g_main_context_iterate (context=0x2b1d050, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3084
#3  0x00007fa0c1a0b429 in g_main_context_iteration (context=0x2b1d050, may_block=1) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3152
#4  0x00007fa0ca671f3e in QEventDispatcherGlib::processEvents (this=0x2b1c640, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fa0ca645cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fa0ca645ef7 in QEventLoop::exec (this=0x7fa0af756db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007fa0ca55d27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007fa0ca628cbf in QInotifyFileSystemWatcherEngine::run (this=0x2b195b0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007fa0ca55fd05 in QThreadPrivate::start (arg=0x2b195b0) at thread/qthread_unix.cpp:331
#10 0x00007fa0c2517efc in start_thread (arg=0x7fa0af757700) at pthread_create.c:304
#11 0x00007fa0cd48c89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fa09ff61700 (LWP 2042)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007fa09ff60ad0 in ?? ()
#2  0x00007fffa97537e7 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 1 (Thread 0x7fa0cdb907a0 (LWP 2038)):
[KCrash Handler]
#6  operator== (value=0, this=0x130000000e) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#7  isNull (this=0x3cd5ca0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x3cd5ca0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=<optimized out>) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0x00007fa0ad80f068 in WindowTaskItem::publishIconGeometry (this=0x382aed0, rect=...) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:130
#11 0x00007fa0ad81ed24 in TaskGroupItem::publishIconGeometry (this=<optimized out>, rect=...) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1432
#12 0x00007fa0ad81eaa5 in publishIconGeometry (this=0x3ab8980) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1424
#13 TaskGroupItem::publishIconGeometry (this=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1416
#14 0x00007fa0ad81db7c in AbstractTaskItem::timerEvent (this=0x3ab8980, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#15 0x00007fa0ca65d789 in QObject::event (this=0x3ab8980, e=<optimized out>) at kernel/qobject.cpp:1181
#16 0x00007fa0ca01589b in QGraphicsWidget::event (this=0x3ab8980, event=0x7fffa96844e0) at graphicsview/qgraphicswidget.cpp:1455
#17 0x00007fa0c99f7424 in notify_helper (e=0x7fffa96844e0, receiver=0x3ab8980, this=0x2473430) at kernel/qapplication.cpp:4486
#18 QApplicationPrivate::notify_helper (this=0x2473430, receiver=0x3ab8980, e=0x7fffa96844e0) at kernel/qapplication.cpp:4458
#19 0x00007fa0c99fc291 in QApplication::notify (this=0x2460340, receiver=0x3ab8980, e=0x7fffa96844e0) at kernel/qapplication.cpp:4365
#20 0x00007fa0cb2f5126 in KApplication::notify (this=0x2460340, receiver=0x3ab8980, event=0x7fffa96844e0) at ../../kdeui/kernel/kapplication.cpp:311
#21 0x00007fa0ca646afc in QCoreApplication::notifyInternal (this=0x2460340, receiver=0x3ab8980, event=0x7fffa96844e0) at kernel/qcoreapplication.cpp:787
#22 0x00007fa0ca673d62 in sendEvent (event=0x7fffa96844e0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#23 QTimerInfoList::activateTimers (this=0x247a730) at kernel/qeventdispatcher_unix.cpp:603
#24 0x00007fa0ca671514 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#25 0x00007fa0c1a0aa5d in g_main_dispatch (context=0x24794e0) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:2441
#26 g_main_context_dispatch (context=0x24794e0) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3011
#27 0x00007fa0c1a0b258 in g_main_context_iterate (context=0x24794e0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3089
#28 0x00007fa0c1a0b429 in g_main_context_iteration (context=0x24794e0, may_block=1) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3152
#29 0x00007fa0ca671ed6 in QEventDispatcherGlib::processEvents (this=0x23f1f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#30 0x00007fa0c9a9f07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#31 0x00007fa0ca645cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#32 0x00007fa0ca645ef7 in QEventLoop::exec (this=0x7fffa9684770, flags=...) at kernel/qeventloop.cpp:201
#33 0x00007fa0ca64a789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#34 0x00007fa0cd78b1a3 in kdemain (argc=1, argv=0x7fffa9684b58) at ../../../../plasma/desktop/shell/main.cpp:120
#35 0x00007fa0cd3cc30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fffa9684b58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffa9684b48) at libc-start.c:226
#36 0x0000000000400671 in _start ()

Possible duplicates by query: bug 287059, bug 287014, bug 286968, bug 286963, bug 286920.

Reported using DrKonqi