Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3) (Compiled from sources)
Qt Version: 4.8.0
Operating System: Linux 3.1.0-4-ARCH i686
Distribution (Platform): Archlinux Packages

-- Information about the crash:
I am getting crashes closing windows when grouping is set to always.
this is in kde/4.7 branch after 275286 was fixed.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xafa5aae0 (LWP 3550))]

Thread 2 (Thread 0xa7974b70 (LWP 3551)):
#0  0xb775e424 in __kernel_vsyscall ()
#1  0xb75cf1ae in poll () from /lib/libc.so.6
#2  0xb24f609b in g_poll () from /usr/lib/libglib-2.0.so.0
#3  0xb24e75e6 in ?? () from /usr/lib/libglib-2.0.so.0
#4  0xb24e797a in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#5  0xb6262b37 in QEventDispatcherGlib::processEvents (this=0xa63e868, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0xb622a85d in QEventLoop::processEvents (this=0xa79741c0, flags=...) at kernel/qeventloop.cpp:149
#7  0xb622aaf9 in QEventLoop::exec (this=0xa79741c0, flags=...) at kernel/qeventloop.cpp:204
#8  0xb6106c6d in QThread::exec (this=0xa63ebc8) at thread/qthread.cpp:501
#9  0xb6205663 in QInotifyFileSystemWatcherEngine::run (this=0xa63ebc8) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb6109fba in QThreadPrivate::start (arg=0xa63ebc8) at thread/qthread_unix.cpp:298
#11 0xb20de70c in ?? () from /usr/lib/libGL.so.1
#12 0x00000000 in ?? ()

Thread 1 (Thread 0xafa5aae0 (LWP 3550)):
[KCrash Handler]
#7  0xad0fc684 in QWeakPointer<TaskManager::Task>::isNull (this=0xf) at /usr/include/QtCore/qsharedpointer_impl.h:580
#8  0xad0fb4ce in TaskManager::TaskItem::task (this=0xa329778) at /home/hussam/packages/kdebase-workspace/src/kde-workspace/libs/taskmanager/taskitem.cpp:113
#9  0xad094e30 in WindowTaskItem::publishIconGeometry (this=0xbff0e60) at /home/hussam/packages/kdebase-workspace/src/kde-workspace/plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0xad0a4340 in AbstractTaskItem::timerEvent (this=0xbff0e60, event=0xbfafe5ac) at /home/hussam/packages/kdebase-workspace/src/kde-workspace/plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0xb6249a94 in QObject::event (this=0xbff0e60, e=0xbfafe5ac) at kernel/qobject.cpp:1156
#12 0xb5d9bb64 in QGraphicsWidget::event (this=0xbff0e60, event=0xbfafe5ac) at graphicsview/qgraphicswidget.cpp:1461
#13 0xb561ea9c in notify_helper (e=0xbfafe5ac, receiver=0xbff0e60, this=0xa0f1570) at kernel/qapplication.cpp:4518
#14 QApplicationPrivate::notify_helper (this=0xa0f1570, receiver=0xbff0e60, e=0xbfafe5ac) at kernel/qapplication.cpp:4490
#15 0xb5624b1d in QApplication::notify (this=0xa0f1570, receiver=0xbff0e60, e=0xbfafe5ac) at kernel/qapplication.cpp:4379
#16 0xb68fdb88 in KApplication::notify (this=0xa0b9418, receiver=0xbff0e60, event=0xbfafe5ac) at /home/hussam/packages/kdelibs/src/kdelibs/kdeui/kernel/kapplication.cpp:311
#17 0xb622c4fe in QCoreApplication::notifyInternal (this=0xa0b9418, receiver=0xbff0e60, event=0xbfafe5ac) at kernel/qcoreapplication.cpp:876
#18 0xb6265378 in sendEvent (event=0xbfafe5ac, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#19 QTimerInfoList::activateTimers (this=0xa0ede34) at kernel/qeventdispatcher_unix.cpp:611
#20 0xb62620e8 in timerSourceDispatch (source=0xa0ede00) at kernel/qeventdispatcher_glib.cpp:186
#21 timerSourceDispatch (source=0xa0ede00) at kernel/qeventdispatcher_glib.cpp:180
#22 0xb6262122 in idleTimerSourceDispatch (source=0xa0ede68) at kernel/qeventdispatcher_glib.cpp:233
#23 0xb24e6faf in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0xb24e76e0 in ?? () from /usr/lib/libglib-2.0.so.0
#25 0xb24e797a in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0xb6262b37 in QEventDispatcherGlib::processEvents (this=0xa01e8a0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#27 0xb56e1a6a in QGuiEventDispatcherGlib::processEvents (this=0xa01e8a0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0xb622a85d in QEventLoop::processEvents (this=0xbfafe844, flags=...) at kernel/qeventloop.cpp:149
#29 0xb622aaf9 in QEventLoop::exec (this=0xbfafe844, flags=...) at kernel/qeventloop.cpp:204
#30 0xb623073a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#31 0xb561c854 in QApplication::exec () at kernel/qapplication.cpp:3779
#32 0xb76d2311 in kdemain (argc=1, argv=0xbfafea54) at /home/hussam/packages/kdebase-workspace/src/kde-workspace/plasma/desktop/shell/main.cpp:120
#33 0x0804852b in main (argc=1, argv=0xbfafea54) at /home/hussam/packages/kdebase-workspace/src/build/plasma/desktop/shell/plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 285862, bug 285368, bug 272495.

Reported using DrKonqi