Bug 289873

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:
- Fermeture d'une machine virtuelle Windows XP sous Virtual Box

- Installation des additions .iso sur la machine hôte.

-- Backtrace:
Application: Outil de gestion de fenêtres Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f3d161d87c0 (LWP 1697))]

Thread 3 (Thread 0x7f3cf0855700 (LWP 1698)):
#0  0x00007f3d0ab531fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x10e4588) at pthread_mutex_unlock.c:290
#2  0x00007f3d0a041fe4 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3d0a042dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3d0a043429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f3d12ca9f3e in QEventDispatcherGlib::processEvents (this=0x10e3b70, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f3d12c7dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f3d12c7def7 in QEventLoop::exec (this=0x7f3cf0854cd0, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007f3d12b9527f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007f3d12c60cbf in QInotifyFileSystemWatcherEngine::run (this=0x10e2420) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f3d12b97d05 in QThreadPrivate::start (arg=0x10e2420) at thread/qthread_unix.cpp:331
#11 0x00007f3d0735c56c in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#12 0x00007f3d0ab4fefc in start_thread (arg=0x7f3cf0855700) at pthread_create.c:304
#13 0x00007f3d15ac489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f3ce9fa8700 (LWP 1699)):
#0  0x00007f3d15ab8773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f3d0a042f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3d0a043429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3d12ca9f3e in QEventDispatcherGlib::processEvents (this=0x12fbe30, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f3d12c7dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f3d12c7def7 in QEventLoop::exec (this=0x7f3ce9fa7cd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f3d12b9527f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f3d12c60cbf in QInotifyFileSystemWatcherEngine::run (this=0x12fb040) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f3d12b97d05 in QThreadPrivate::start (arg=0x12fb040) at thread/qthread_unix.cpp:331
#9  0x00007f3d0735c56c in ?? () from /usr/lib/nvidia-current-updates/libGL.so.1
#10 0x00007f3d0ab4fefc in start_thread (arg=0x7f3ce9fa8700) at pthread_create.c:304
#11 0x00007f3d15ac489d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3d161d87c0 (LWP 1697)):
[KCrash Handler]
#6  isNull (this=0x4d0000) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x4d0000) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x35f2890) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007f3cfb87a112 in WindowTaskItem::publishIconGeometry (this=0x2cb8c80) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007f3cfb888b7c in AbstractTaskItem::timerEvent (this=0x2cb8c80, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007f3d12c95789 in QObject::event (this=0x2cb8c80, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007f3d1264d89b in QGraphicsWidget::event (this=0x2cb8c80, event=0x7fff8ad547c0) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007f3d1202f424 in notify_helper (e=0x7fff8ad547c0, receiver=0x2cb8c80, this=0x6ef060) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x6ef060, receiver=0x2cb8c80, e=0x7fff8ad547c0) at kernel/qapplication.cpp:4458
#15 0x00007f3d12034291 in QApplication::notify (this=0x6d2e80, receiver=0x2cb8c80, e=0x7fff8ad547c0) at kernel/qapplication.cpp:4365
#16 0x00007f3d1392d126 in KApplication::notify (this=0x6d2e80, receiver=0x2cb8c80, event=0x7fff8ad547c0) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f3d12c7eafc in QCoreApplication::notifyInternal (this=0x6d2e80, receiver=0x2cb8c80, event=0x7fff8ad547c0) at kernel/qcoreapplication.cpp:787
#18 0x00007f3d12cabd62 in sendEvent (event=0x7fff8ad547c0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x6f6a90) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f3d12ca9538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f3d0a042a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f3d0a043258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f3d0a043429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f3d12ca9ed6 in QEventDispatcherGlib::processEvents (this=0x632f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007f3d120d707e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f3d12c7dcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f3d12c7def7 in QEventLoop::exec (this=0x7fff8ad54a50, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f3d12c82789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007f3d15dc31a3 in kdemain (argc=1, argv=0x7fff8ad54e38) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007f3d15a0430d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff8ad54e38, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff8ad54e28) at libc-start.c:226
#32 0x0000000000400671 in _start ()

Possible duplicates by query: bug 289826, bug 289757, bug 289752, bug 289738, bug 289736.

Reported using DrKonqi