Application: kwin (4.4.00 (KDE 4.4.0))
KDE Platform Version: 4.4.00 (KDE 4.4.0) (Compiled from sources)
Qt Version: 4.6.2
Operating System: Linux 2.6.31-tuxonice-091003 x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
The Crash Reporting Assistant is started at every desktop switching

The crash can be reproduced every time.

 -- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib64/libgobject-2.0.so.0.2200.4-gdb.py", line 9, in <module>
    from gobject import register
  File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in <module>
    import gdb.backtrace
ImportError: No module named backtrace
The current source language is "auto; currently asm".
[KCrash Handler]
#5  0x0000000000000020 in ?? ()
#6  0x00007f5712a7b3c5 in KWin::TabBox::ClientModel::data (this=0x1d01140, index=..., role=37) at /var/tmp/portage/kde-base/kwin-4.4.0/work/kwin-4.4.0/kwin/tabbox/clientmodel.cpp:77
#7  0x00007f5712a807ed in KWin::TabBox::TabBoxHandlerPrivate::updateHighlightWindows (this=0x1d037a0) at /var/tmp/portage/kde-base/kwin-4.4.0/work/kwin-4.4.0/kwin/tabbox/tabboxhandler.cpp:237
#8  0x00007f5712a75850 in KWin::TabBox::TabBox::qt_metacall (this=0x1cc5ea0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>)
    at /var/tmp/portage/kde-base/kwin-4.4.0/work/kwin-4.4.0_build/kwin/tabbox.moc:72
#9  0x00007f5710c2539f in QMetaObject::activate (sender=0x1cc5ee8, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xfffffffffff834bc) at kernel/qobject.cpp:3285
#10 0x00007f5710c22013 in QObject::event (this=0x1cc5ee8, e=0x7fffecf38410) at kernel/qobject.cpp:1204
#11 0x00007f570fb5bf5c in QApplicationPrivate::notify_helper (this=0x1b56fe0, receiver=0x1cc5ee8, e=0x7fffecf38d10) at kernel/qapplication.cpp:4300
#12 0x00007f570fb6258b in QApplication::notify (this=0x7fffecf39070, receiver=0x1cc5ee8, e=0x7fffecf38d10) at kernel/qapplication.cpp:4183
#13 0x00007f5711866ac6 in KApplication::notify (this=0x7fffecf39070, receiver=0x1cc5ee8, event=0x7fffecf38d10)
    at /var/tmp/portage/kde-base/kdelibs-4.4.0/work/kdelibs-4.4.0/kdeui/kernel/kapplication.cpp:302
#14 0x00007f5710c126bb in QCoreApplication::notifyInternal (this=0x7fffecf39070, receiver=0x1cc5ee8, event=0x7fffecf38d10) at kernel/qcoreapplication.cpp:704
#15 0x00007f5710c3efc2 in QCoreApplication::sendEvent (this=0x1b5ad10) at kernel/qcoreapplication.h:215
#16 QTimerInfoList::activateTimers (this=0x1b5ad10) at kernel/qeventdispatcher_unix.cpp:603
#17 0x00007f5710c3bdc8 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#18 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#19 0x00007f570c60b4cd in g_main_dispatch (context=0x1b599f0) at gmain.c:1960
#20 IA__g_main_context_dispatch (context=0x1b599f0) at gmain.c:2513
#21 0x00007f570c60ee88 in g_main_context_iterate (context=0x1b599f0, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2591
#22 0x00007f570c60efb0 in IA__g_main_context_iteration (context=0x1b599f0, may_block=1) at gmain.c:2654
#23 0x00007f5710c3ba93 in QEventDispatcherGlib::processEvents (this=0x1b56fa0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#24 0x00007f570fc0b3ce in QGuiEventDispatcherGlib::processEvents (this=0x1e57490, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#25 0x00007f5710c11012 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#26 0x00007f5710c113e4 in QEventLoop::exec (this=0x7fffecf38fb0, flags=) at kernel/qeventloop.cpp:201
#27 0x00007f5710c150cb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#28 0x00007f5712a7363e in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /var/tmp/portage/kde-base/kwin-4.4.0/work/kwin-4.4.0/kwin/main.cpp:526
#29 0x00007f570ccdfbbd in __libc_start_main () from /lib/libc.so.6
#30 0x0000000000400949 in _start ()

This bug may be a duplicate of or related to bug 223432.

Possible duplicates by query: bug 225917, bug 223432.

Reported using DrKonqi