Application: kwin (4.4.1 (KDE 4.4.1))
KDE Platform Version: 4.4.1 (KDE 4.4.1)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-16-generic x86_64
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
KWin just crashed. Prior to the crash I had noticed that my machine was swapping memory a lot, leading to major thrashing, with the digital clock stopping for almost a minute.

 -- Backtrace:
Application: KWin (kwin), signal: Bus error
[Current thread is 1 (Thread 0x7f58bc7bd820 (LWP 8813))]

Thread 2 (Thread 0x7f589d04a710 (LWP 8814)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007f589d0499e0 in ?? ()
#2  0x00007fff12ef6852 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 1 (Thread 0x7f58bc7bd820 (LWP 8813)):
[KCrash Handler]
#5  0x00007f58bbbd87b0 in KPixmapCache::Private::mmapFile (this=0x928990, filename=..., info=0x9289e0, newsize=33656832) at ../../kdeui/util/kpixmapcache.cpp:491
#6  0x00007f58bbbda0b4 in KPixmapCache::Private::mmapFiles (this=0x928990) at ../../kdeui/util/kpixmapcache.cpp:419
#7  0x00007f58bbbd9ed3 in KPixmapCache::Private::init (this=0x928990) at ../../kdeui/util/kpixmapcache.cpp:1061
#8  0x00007f58bbbdb94d in KPixmapCache::discard (this=0x905500) at ../../kdeui/util/kpixmapcache.cpp:1279
#9  0x00007f58bbbdc038 in KPixmapCache::deleteCache (name=...) at ../../kdeui/util/kpixmapcache.cpp:1255
#10 0x00007f58bb5f5add in Plasma::ThemePrivate::discardCache (this=0x903500) at ../../plasma/theme.cpp:221
#11 0x00007f58bb5f5f3d in Plasma::ThemePrivate::compositingChanged (this=0x903500) at ../../plasma/theme.cpp:213
#12 0x00007f58bb5fa912 in Plasma::Theme::qt_metacall (this=0x8ff2f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff12ef01c0) at ./theme.moc:108
#13 0x00007f58b7edddbf in QMetaObject::activate (sender=0x8eb280, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7f58bc04707d) at kernel/qobject.cpp:3293
#14 0x00007f58bbbd258d in KSelectionWatcher::Private::x11Event (this=<value optimized out>, ev_P=0x0) at ../../kdeui/util/kmanagerselection.cpp:395
#15 0x00007f58bbb58ce6 in KAppX11HackWidget::publicx11Event (this=<value optimized out>, _event=0x7fff12ef0890) at ../../kdeui/kernel/kapplication.cpp:903
#16 KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fff12ef0890) at ../../kdeui/kernel/kapplication.cpp:953
#17 0x00007f58b868c5e1 in qt_x11EventFilter (ev=0x7fff12ef0890) at kernel/qapplication_x11.cpp:399
#18 0x00007f58b869b111 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff12ef0890) at kernel/qapplication_x11.cpp:3231
#19 0x00007f58b86c7632 in x11EventSourceDispatch (s=0x7459b0, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#20 0x00007f58b244d492 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#21 0x00007f58b2451308 in ?? () from /lib/libglib-2.0.so.0
#22 0x00007f58b24514bc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#23 0x00007f58b7ef4483 in QEventDispatcherGlib::processEvents (this=0x741ad0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#24 0x00007f58b86c721e in QGuiEventDispatcherGlib::processEvents (this=0x952260, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#25 0x00007f58b7ec9902 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#26 0x00007f58b7ec9cdc in QEventLoop::exec (this=0x7fff12ef0bc0, flags=) at kernel/qeventloop.cpp:201
#27 0x00007f58b7ecda1b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#28 0x00007f58bc33f72e in kdemain () from /usr/lib/libkdeinit4_kwin.so
#29 0x00007f58bbf8dc4d in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fff12ef1188) at libc-start.c:226
#30 0x00000000004006b9 in _start ()

This bug may be a duplicate of or related to bug 182026.

Possible duplicates by query: bug 230368, bug 230119, bug 230103, bug 229868, bug 229726.

Reported using DrKonqi