Application: kwin (4.4.92 (KDE 4.4.92 (KDE 4.5 RC2)))
KDE Platform Version: 4.4.92 (KDE 4.4.92 (KDE 4.5 RC2))
Qt Version: 4.7.0
Operating System: Linux 2.6.35-11-generic i686
Distribution: Ubuntu maverick (development branch)

-- Information about the crash:
Kwin crash, when i enable desktop effects. I use Gallium radeon driver, with mesa classic driver i haven't problems.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7826720 (LWP 1544))]

Thread 2 (Thread 0xaf80db70 (LWP 1548)):
#0  0x0033f416 in __kernel_vsyscall ()
#1  0x001d9411 in select () from /lib/libc.so.6
#2  0x074f11b2 in qt_safe_select (nfds=15, fdread=0x8648f50, fdwrite=0x8649164, fdexcept=0x8649378, orig_timeout=0x0) at kernel/qcore_unix.cpp:82
#3  0x074f5c59 in QEventDispatcherUNIX::select (this=0x85fbc48, nfds=15, readfds=0x8648f50, writefds=0x8649164, exceptfds=0x8649378, timeout=0x0) at kernel/qeventdispatcher_unix.cpp:632
#4  0x074f67dc in QEventDispatcherUNIXPrivate::doSelect (this=0x8648e58, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:219
#5  0x074f7555 in QEventDispatcherUNIX::processEvents (this=0x85fbc48, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#6  0x074c3f29 in QEventLoop::processEvents (this=0xaf80d280, flags=) at kernel/qeventloop.cpp:149
#7  0x074c43aa in QEventLoop::exec (this=0xaf80d280, flags=...) at kernel/qeventloop.cpp:201
#8  0x073c0a9e in QThread::exec (this=0x865ca40) at thread/qthread.cpp:490
#9  0x074a2eab in QInotifyFileSystemWatcherEngine::run (this=0x865ca40) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x073c3d19 in QThreadPrivate::start (arg=0x865ca40) at thread/qthread_unix.cpp:266
#11 0x00345cc9 in start_thread () from /lib/libpthread.so.0
#12 0x001e073e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb7826720 (LWP 1544)):
[KCrash Handler]
#7  dri2InvalidateBuffers (dpy=0x838cb78, drawable=65069641) at dri2_glx.c:621
#8  0x003c5adf in dri2SwapBuffers (pdraw=0x845b740, target_msc=0, divisor=0, remainder=0) at dri2_glx.c:488
#9  0x0039f0ff in glXSwapBuffers (dpy=0x838cb78, drawable=65069641) at glxcmds.c:1074
#10 0x00de3d1e in KWin::SceneOpenGL::flushBuffer (this=0x844f0b0, mask=0, damage=...) at ../../kwin/scene_opengl.cpp:831
#11 0x00de4db4 in KWin::SceneOpenGL::paint (this=0x844f0b0, damage=..., toplevels=...) at ../../kwin/scene_opengl.cpp:761
#12 0x00dccac4 in KWin::Workspace::performCompositing (this=0x83f6940) at ../../kwin/composite.cpp:455
#13 0x00d3dc0e in KWin::Workspace::qt_metacall (this=0x83f6940, _c=QMetaObject::InvokeMetaMethod, _id=190, _a=0xbfd61e6c) at ./workspace.moc:583
#14 0x074cb1ea in QMetaObject::metacall (object=0x83f6940, cl=458, idx=190, argv=0xbfd61e6c) at kernel/qmetaobject.cpp:237
#15 0x074ddfed in QMetaObject::activate (sender=0x83f6bf0, m=0x75f75a4, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3280
#16 0x0752fb17 in QTimer::timeout (this=0x83f6bf0) at .moc/release-shared/moc_qtimer.cpp:134
#17 0x074e3b0e in QTimer::timerEvent (this=0x83f6bf0, e=0xbfd623c0) at kernel/qtimer.cpp:271
#18 0x074d7e44 in QObject::event (this=0x83f6bf0, e=0x0) at kernel/qobject.cpp:1183
#19 0x05ef3a2c in QApplicationPrivate::notify_helper (this=0x837c798, receiver=0x83f6bf0, e=0xbfd623c0) at kernel/qapplication.cpp:4389
#20 0x05ef9a9e in QApplication::notify (this=0xbfd626c4, receiver=0x83f6bf0, e=0xbfd623c0) at kernel/qapplication.cpp:3791
#21 0x0063bd3a in KApplication::notify (this=0xbfd626c4, receiver=0x83f6bf0, event=0xbfd623c0) at ../../kdeui/kernel/kapplication.cpp:309
#22 0x00d5aa6f in KWin::Application::notify (this=0xbfd626c4, o=0x83f6bf0, e=0xbfd623c0) at ../../kwin/main.cpp:372
#23 0x074c545b in QCoreApplication::notifyInternal (this=0xbfd626c4, receiver=0x83f6bf0, event=0xbfd623c0) at kernel/qcoreapplication.cpp:732
#24 0x074f7406 in QCoreApplication::sendEvent (this=0x837cf78) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#25 QTimerInfoList::activateTimers (this=0x837cf78) at kernel/qeventdispatcher_unix.cpp:602
#26 0x074f7567 in QEventDispatcherUNIX::processEvents (this=0x837b2e8, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#27 0x05fb65d2 in QEventDispatcherX11::processEvents (this=0x837b2e8, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#28 0x074c3f29 in QEventLoop::processEvents (this=0xbfd62614, flags=) at kernel/qeventloop.cpp:149
#29 0x074c43aa in QEventLoop::exec (this=0xbfd62614, flags=...) at kernel/qeventloop.cpp:201
#30 0x074c892f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#31 0x05ef2857 in QApplication::exec () at kernel/qapplication.cpp:3665
#32 0x00d5cbd4 in kdemain (argc=3, argv=0xbfd62924) at ../../kwin/main.cpp:531
#33 0x080485ab in main (argc=3, argv=0xbfd62924) at kwin_dummy.cpp:3

Reported using DrKonqi