Application: kwin (4.9.3)
KDE Platform Version: 4.9.3
Qt Version: 4.8.3
Operating System: Linux 3.5.0-19-generic i686
Distribution: Ubuntu 12.10

-- Information about the crash:
- What I was doing when the application crashed:
every time i log out, restart, turn off, ect. the cpu kwin crashes.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb1d08980 (LWP 1661))]

Thread 3 (Thread 0xabb50b40 (LWP 1668)):
#0  0xb7751424 in __kernel_vsyscall ()
#1  0xb2cb296b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb753e64c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb66961cd in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb66961ff in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb2caed4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb7530d3e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xaf70db40 (LWP 3294)):
#0  0xb2cf4dcd in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0xb5f29fb5 in do_gettime (frac=0xaf70d090, sec=0xaf70d088) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb601136e in QTimerInfoList::updateCurrentTime (this=0xaee00b34) at kernel/qeventdispatcher_unix.cpp:343
#4  0xaf70d19c in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0xb1d08980 (LWP 1661)):
[KCrash Handler]
#7  PUSH_RESRC (tor=<optimized out>, data=<optimized out>, r=<optimized out>, bin=<optimized out>, mthd=<optimized out>, push=<optimized out>, subc=<optimized out>, access=<optimized out>, vor=<optimized out>) at nv30_winsys.h:107
#8  nv30_vbo_validate (nv30=0x9574f80) at nv30_vbo.c:239
#9  0xadd7a802 in nv30_state_validate (nv30=nv30@entry=0x9574f80, hwtnl=hwtnl@entry=1 '\001') at nv30_state_validate.c:487
#10 0xadd584d5 in nv30_clear (pipe=0x9574f80, buffers=1, color=0xbfde4acc, depth=1, stencil=0) at nv30_clear.c:61
#11 0xadf973b0 in st_Clear (ctx=0x95b57b8, mask=2) at ../../../../src/mesa/state_tracker/st_cb_clear.c:548
#12 0xadf53d27 in _mesa_Clear (mask=16384) at ../../../../src/mesa/main/clear.c:233
#13 0xb76c4ef5 in KWin::SceneOpenGL::paintBackground (this=this@entry=0x95349f8, region=...) at ../../kwin/scene_opengl.cpp:186
#14 0xb76af6e2 in KWin::Scene::paintGenericScreen (this=0x95349f8, orig_mask=32) at ../../kwin/scene.cpp:200
#15 0xb76be0b5 in KWin::SceneOpenGL::paintGenericScreen (this=0x95349f8, mask=32, data=...) at ../../kwin/scene_opengl.cpp:173
#16 0xb76ae0e4 in KWin::Scene::finalPaintScreen (this=0x95349f8, mask=32, region=..., data=...) at ../../kwin/scene.cpp:190
#17 0xb76d21a8 in KWin::EffectsHandlerImpl::paintScreen (this=0x96d6b28, mask=32, region=..., data=...) at ../../kwin/effects.cpp:246
#18 0xabbb8019 in KWin::LogoutEffect::paintScreen (this=0x97dbc40, mask=32, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:193
#19 0xb76d214b in KWin::EffectsHandlerImpl::paintScreen (this=0x96d6b28, mask=mask@entry=32, region=..., data=...) at ../../kwin/effects.cpp:243
#20 0xb694b9ea in KWin::Effect::paintScreen (this=0x9794ea0, mask=32, region=..., data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#21 0xb76d214b in KWin::EffectsHandlerImpl::paintScreen (this=0x96d6b28, mask=32, region=..., data=...) at ../../kwin/effects.cpp:243
#22 0xb76af955 in KWin::Scene::paintScreen (this=0x95349f8, mask=0xbfde51dc, region=0xbfde5248) at ../../kwin/scene.cpp:146
#23 0xb76c6e19 in KWin::SceneOpenGL::paint (this=0x95349f8, damage=..., toplevels=...) at ../../kwin/scene_opengl_glx.cpp:499
#24 0xb76a8666 in KWin::Workspace::performCompositing (this=0x94c6820) at ../../kwin/composite.cpp:443
#25 0xb5ff4d34 in QObject::event (this=0x94c6820, e=0xbfde5740) at kernel/qobject.cpp:1157
#26 0xb54cf39c in QApplicationPrivate::notify_helper (this=0x9401bb8, receiver=0x94c6820, e=0xbfde5740) at kernel/qapplication.cpp:4562
#27 0xb54d3daf in QApplication::notify (this=0xbfde5740, receiver=0x94c6820, e=0xbfde5740) at kernel/qapplication.cpp:3944
#28 0xb71ede91 in KApplication::notify (this=0xbfde5b08, receiver=0x94c6820, event=0xbfde5740) at ../../kdeui/kernel/kapplication.cpp:311
#29 0xb76547ff in notify (e=0xbfde5740, o=0x94c6820, this=0xbfde5b08) at ../../kwin/main.cpp:371
#30 KWin::Application::notify (this=0xbfde5b08, o=0x94c6820, e=0xbfde5740) at ../../kwin/main.cpp:367
#31 0xb5fde78e in QCoreApplication::notifyInternal (this=0xbfde5b08, receiver=0x94c6820, event=0xbfde5740) at kernel/qcoreapplication.cpp:915
#32 0xb6013280 in sendEvent (event=0xbfde5740, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#33 QTimerInfoList::activateTimers (this=0x940245c) at kernel/qeventdispatcher_unix.cpp:611
#34 0xb6013305 in QEventDispatcherUNIX::activateTimers (this=0x940245c, this@entry=0x93c1eb8) at kernel/qeventdispatcher_unix.cpp:868
#35 0xb6013478 in QEventDispatcherUNIX::processEvents (this=0x93c1eb8, flags=...) at kernel/qeventdispatcher_unix.cpp:930
#36 0xb55869f3 in QEventDispatcherX11::processEvents (this=0x93c1eb8, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#37 0xb5fdd26c in QEventLoop::processEvents (this=this@entry=0xbfde5988, flags=...) at kernel/qeventloop.cpp:149
#38 0xb5fdd561 in QEventLoop::exec (this=0xbfde5988, flags=...) at kernel/qeventloop.cpp:204
#39 0xb5fe2cba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#40 0xb54ccfc4 in QApplication::exec () at kernel/qapplication.cpp:3823
#41 0xb7657169 in kdemain (argc=1, argv=0xbfde5bf4) at ../../kwin/main.cpp:545
#42 0x0804855b in main (argc=1, argv=0xbfde5bf4) at kwin_dummy.cpp:3

Possible duplicates by query: bug 311036, bug 309701, bug 309280.

Reported using DrKonqi