Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
i was installing and trying to launch game in wine.. This bug happens sometimes but not always

The crash can be reproduced some of the time.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f7cb7e3e7c0 (LWP 2697))]

Thread 4 (Thread 0x7f7c9335d700 (LWP 2698)):
#0  0x00007f7cb7721773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f7cabcabf68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7cabcac429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7cb4912f3e in QEventDispatcherGlib::processEvents (this=0x2ac4f00, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f7cb48e6cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f7cb48e6ef7 in QEventLoop::exec (this=0x7f7c9335ccd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f7cb47fe27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f7cb48c9cbf in QInotifyFileSystemWatcherEngine::run (this=0x2ac3840) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f7cb4800d05 in QThreadPrivate::start (arg=0x2ac3840) at thread/qthread_unix.cpp:331
#9  0x00007f7ca8fc556c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f7cac7b8efc in start_thread (arg=0x7f7c9335d700) at pthread_create.c:304
#11 0x00007f7cb772d89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f7c90a10700 (LWP 2699)):
#0  0x00007f7cb7721773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f7cabcabf68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7cabcac429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7cb4912f3e in QEventDispatcherGlib::processEvents (this=0x2cdf740, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f7cb48e6cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f7cb48e6ef7 in QEventLoop::exec (this=0x7f7c90a0fcd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f7cb47fe27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f7cb48c9cbf in QInotifyFileSystemWatcherEngine::run (this=0x2cde9b0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f7cb4800d05 in QThreadPrivate::start (arg=0x2cde9b0) at thread/qthread_unix.cpp:331
#9  0x00007f7ca8fc556c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f7cac7b8efc in start_thread (arg=0x7f7c90a10700) at pthread_create.c:304
#11 0x00007f7cb772d89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f7c89795700 (LWP 2705)):
#0  0x00007f7cb7721773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f7cabcabf68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7cabcac792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7c8a273516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f7cabcd12b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7ca8fc556c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x00007f7cac7b8efc in start_thread (arg=0x7f7c89795700) at pthread_create.c:304
#7  0x00007f7cb772d89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f7cb7e3e7c0 (LWP 2697)):
[KCrash Handler]
#6  isNull (this=0x0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x37a5f80) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007f7c9c224112 in WindowTaskItem::publishIconGeometry (this=0x46cf560) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007f7c9c232b7c in AbstractTaskItem::timerEvent (this=0x46cf560, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007f7cb48fe789 in QObject::event (this=0x46cf560, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007f7cb42b689b in QGraphicsWidget::event (this=0x46cf560, event=0x7fff91918a50) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007f7cb3c98424 in notify_helper (e=0x7fff91918a50, receiver=0x46cf560, this=0x22afb40) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x22afb40, receiver=0x46cf560, e=0x7fff91918a50) at kernel/qapplication.cpp:4458
#15 0x00007f7cb3c9d291 in QApplication::notify (this=0x2294f30, receiver=0x46cf560, e=0x7fff91918a50) at kernel/qapplication.cpp:4365
#16 0x00007f7cb5596126 in KApplication::notify (this=0x2294f30, receiver=0x46cf560, event=0x7fff91918a50) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f7cb48e7afc in QCoreApplication::notifyInternal (this=0x2294f30, receiver=0x46cf560, event=0x7fff91918a50) at kernel/qcoreapplication.cpp:787
#18 0x00007f7cb4914d62 in sendEvent (event=0x7fff91918a50, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x22b4980) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f7cb4912538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f7cabcaba5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f7cabcac258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f7cabcac429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f7cb4912ed6 in QEventDispatcherGlib::processEvents (this=0x21eef40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007f7cb3d4007e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f7cb48e6cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f7cb48e6ef7 in QEventLoop::exec (this=0x7fff91918ce0, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f7cb48eb789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007f7cb7a2c1a3 in kdemain (argc=1, argv=0x7fff919190c8) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007f7cb766d30d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff919190c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff919190b8) at libc-start.c:226
#32 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 286299.

Possible duplicates by query: bug 288122, bug 288114, bug 288054, bug 288000, bug 287963.

Reported using DrKonqi