Application: kwin (4.7.00 (4.7.0))
KDE Platform Version: 4.7.00 (4.7.0)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
I left my pc unattended for the night and on the morning I saw the indication that kwin crashed.

I run KDE 4.7.0 from PPA for kubuntu

The crash can be reproduced some of the time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f34130077c0 (LWP 3240))]

Thread 3 (Thread 0x7f33f2d60700 (LWP 3251)):
#0  0x00007f341284e143 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f340eba832c in qt_safe_select (nfds=23, fdread=0x1a5d510, fdwrite=0x1a5d7a8, fdexcept=0x1a5da40, orig_timeout=<value optimized out>) at kernel/qcore_unix.cpp:82
#2  0x00007f340ebad3d0 in QEventDispatcherUNIXPrivate::doSelect (this=0x1a5d350, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:219
#3  0x00007f340ebae04a in QEventDispatcherUNIX::processEvents (this=0x1a920c0, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#4  0x00007f340eb7f882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f340eb7fabc in QEventLoop::exec (this=0x7f33f2d5fcd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f340ea96924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f340eb61c2f in QInotifyFileSystemWatcherEngine::run (this=0x1a5c250) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f340ea99175 in QThreadPrivate::start (arg=0x1a5c250) at thread/qthread_unix.cpp:320
#9  0x00007f34100b6853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f3409199d8c in start_thread (arg=0x7f33f2d60700) at pthread_create.c:304
#11 0x00007f341285604d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f33f255f700 (LWP 3252)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f34116b62a2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f34119cf180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f34116b62d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f34119dd254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f34100b6853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#4  0x00007f3409199d8c in start_thread (arg=0x7f33f255f700) at pthread_create.c:304
#5  0x00007f341285604d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f34130077c0 (LWP 3240)):
[KCrash Handler]
#6  0x00007f3410cb0af8 in QVector<KWin::GLShader*>::realloc (this=0x16d2310, asize=134217726, aalloc=268435455) at /usr/include/qt4/QtCore/qvector.h:483
#7  0x00007f3410caeb9f in append (this=0x16d2310, shader=0x16d2d70) at /usr/include/qt4/QtCore/qvector.h:549
#8  push (this=0x16d2310, shader=0x16d2d70) at /usr/include/qt4/QtCore/qstack.h:59
#9  KWin::ShaderManager::pushShader (this=0x16d2310, shader=0x16d2d70) at ../../../kwin/libkwineffects/kwinglutils.cpp:1144
#10 0x00007f3410caec5f in KWin::ShaderManager::pushShader (this=0x16d2310, type=KWin::ShaderManager::GenericShader, reset=false) at ../../../kwin/libkwineffects/kwinglutils.cpp:1130
#11 0x00007f33f969cd85 in KWin::CubeEffect::paintWindow (this=0x18a5b60, w=0x34778a0, mask=9, region=..., data=...) at ../../../kwin/effects/cube/cube.cpp:1271
#12 0x00007f3412be67da in KWin::EffectsHandlerImpl::paintWindow (this=0x17e04a0, w=0x34778a0, mask=9, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:239
#13 0x00007f3410ca38fb in KWin::Effect::paintWindow (this=<value optimized out>, w=0x34778a0, mask=9, region=<value optimized out>, data=<value optimized out>) at ../../../kwin/libkwineffects/kwineffects.cpp:157
#14 0x00007f3412be67da in KWin::EffectsHandlerImpl::paintWindow (this=0x17e04a0, w=0x34778a0, mask=9, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:239
#15 0x00007f33f96724b3 in KWin::TranslucencyEffect::paintWindow (this=<value optimized out>, w=0x34778a0, mask=9, region=..., data=...) at ../../../kwin/effects/translucency/translucency.cpp:166
#16 0x00007f3412be67da in KWin::EffectsHandlerImpl::paintWindow (this=0x17e04a0, w=0x34778a0, mask=9, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:239
#17 0x00007f33f9673286 in KWin::MinimizeAnimationEffect::paintWindow (this=<value optimized out>, w=0x34778a0, mask=9, region=..., data=...) at ../../../kwin/effects/minimizeanimation/minimizeanimation.cpp:102
#18 0x00007f3412be67da in KWin::EffectsHandlerImpl::paintWindow (this=0x17e04a0, w=0x34778a0, mask=9, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:239
#19 0x00007f33f968bd11 in KWin::CoverSwitchEffect::paintWindow (this=<value optimized out>, w=0x34778a0, mask=9, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:531
#20 0x00007f3412be67da in KWin::EffectsHandlerImpl::paintWindow (this=0x17e04a0, w=0x34778a0, mask=9, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:239
#21 0x00007f33f96c3bfd in KWin::WobblyWindowsEffect::paintWindow (this=<value optimized out>, w=0x34778a0, mask=9, region=..., data=<value optimized out>) at ../../../kwin/effects/wobblywindows/wobblywindows.cpp:352
#22 0x00007f3412be67da in KWin::EffectsHandlerImpl::paintWindow (this=0x17e04a0, w=0x34778a0, mask=9, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:239
#23 0x00007f33f9656012 in KWin::SlidingPopupsEffect::paintWindow (this=<value optimized out>, w=0x34778a0, mask=9, region=<value optimized out>, data=...) at ../../../kwin/effects/slidingpopups/slidingpopups.cpp:146
#24 0x00007f3412be67da in KWin::EffectsHandlerImpl::paintWindow (this=0x17e04a0, w=0x34778a0, mask=9, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:239
#25 0x00007f33f9644951 in KWin::LoginEffect::paintWindow (this=<value optimized out>, w=0x34778a0, mask=9, region=<value optimized out>, data=<value optimized out>) at ../../../kwin/effects/login/login.cpp:66
#26 0x00007f3412be67da in KWin::EffectsHandlerImpl::paintWindow (this=0x17e04a0, w=0x34778a0, mask=9, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:239
#27 0x00007f3410ca38fb in KWin::Effect::paintWindow (this=<value optimized out>, w=0x34778a0, mask=9, region=<value optimized out>, data=<value optimized out>) at ../../../kwin/libkwineffects/kwineffects.cpp:157
#28 0x00007f3412be67da in KWin::EffectsHandlerImpl::paintWindow (this=0x17e04a0, w=0x34778a0, mask=9, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:239
#29 0x00007f3412bc32fa in KWin::Scene::paintWindow (this=<value optimized out>, w=0x680a910, mask=9, region=..., quads=<value optimized out>) at ../../kwin/scene.cpp:306
#30 0x00007f3412bc3c4a in KWin::Scene::paintSimpleScreen (this=0x15d4130, orig_mask=8, region=...) at ../../kwin/scene.cpp:278
#31 0x00007f3412bc28f1 in KWin::Scene::finalPaintScreen (this=0x15d4130, mask=8, region=<value optimized out>, data=<value optimized out>) at ../../kwin/scene.cpp:177
#32 0x00007f3412be6969 in KWin::EffectsHandlerImpl::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:215
#33 0x00007f33f96bbe06 in KWin::StartupFeedbackEffect::paintScreen (this=0x188dde0, mask=8, region=<value optimized out>, data=...) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:174
#34 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#35 0x00007f33f9644db6 in KWin::OutlineEffect::paintScreen (this=0x1876e30, mask=8, region=<value optimized out>, data=...) at ../../../kwin/effects/outline/outline.cpp:44
#36 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#37 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#38 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#39 0x00007f33f968560d in KWin::LogoutEffect::paintScreen (this=0x18879e0, mask=8, region=..., data=...) at ../../../kwin/effects/logout/logout.cpp:200
#40 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#41 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#42 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#43 0x00007f33f96450a9 in KWin::PresentWindowsEffect::paintScreen (this=0x187a8d0, mask=8, region=..., data=...) at ../../../kwin/effects/presentwindows/presentwindows.cpp:216
#44 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#45 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#46 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#47 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#48 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#49 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#50 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#51 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#52 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#53 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#54 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#55 0x00007f33f966231d in KWin::DesktopGridEffect::paintScreen (this=<value optimized out>, mask=8, region=..., data=...) at ../../../kwin/effects/desktopgrid/desktopgrid.cpp:161
#56 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#57 0x00007f33f967a97f in KWin::SlideEffect::paintScreen (this=<value optimized out>, mask=8, region=..., data=...) at ../../../kwin/effects/slide/slide.cpp:81
#58 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#59 0x00007f33f965c06d in KWin::BoxSwitchEffect::paintScreen (this=0x1878000, mask=8, region=..., data=...) at ../../../kwin/effects/boxswitch/boxswitch.cpp:137
#60 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#61 0x00007f33f969be16 in KWin::CubeEffect::paintScreen (this=<value optimized out>, mask=8, region=..., data=...) at ../../../kwin/effects/cube/cube.cpp:578
#62 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#63 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#64 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#65 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#66 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#67 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#68 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#69 0x00007f33f968ed76 in KWin::CoverSwitchEffect::paintScreen (this=0x186bf20, mask=8, region=..., data=...) at ../../../kwin/effects/coverswitch/coverswitch.cpp:136
#70 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#71 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#72 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#73 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#74 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#75 0x00007f3410ca3968 in KWin::Effect::paintScreen (this=<value optimized out>, mask=8, region=<value optimized out>, data=...) at ../../../kwin/libkwineffects/kwineffects.cpp:142
#76 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#77 0x00007f33f9681abd in KWin::ZoomEffect::paintScreen (this=0x18c06f0, mask=8, region=..., data=...) at ../../../kwin/effects/zoom/zoom.cpp:324
#78 0x00007f3412be69f3 in KWin::EffectsHandlerImpl::paintScreen (this=0x17e04a0, mask=8, region=<value optimized out>, data=...) at ../../kwin/effects.cpp:212
#79 0x00007f3412bc4d8f in KWin::Scene::paintScreen (this=0x15d4130, mask=0x7fff3ca8303c, region=0x7fff3ca83140) at ../../kwin/scene.cpp:136
#80 0x00007f3412bdce23 in KWin::SceneOpenGL::paint (this=0x15d4130, damage=..., toplevels=<value optimized out>) at ../../kwin/scene_opengl_glx.cpp:455
#81 0x00007f3412bbf765 in KWin::Workspace::performCompositing (this=0x123dbf0) at ../../kwin/composite.cpp:427
#82 0x00007f340eb941c9 in QObject::event (this=0x123dbf0, e=<value optimized out>) at kernel/qobject.cpp:1190
#83 0x00007f340df3d9f4 in QApplicationPrivate::notify_helper (this=0x12abf50, receiver=0x123dbf0, e=0x7fff3ca838a0) at kernel/qapplication.cpp:4462
#84 0x00007f340df423ba in QApplication::notify (this=<value optimized out>, receiver=0x123dbf0, e=0x7fff3ca838a0) at kernel/qapplication.cpp:4341
#85 0x00007f3412344796 in KApplication::notify (this=0x7fff3ca83ca0, receiver=0x123dbf0, event=0x7fff3ca838a0) at ../../kdeui/kernel/kapplication.cpp:311
#86 0x00007f340eb8049c in QCoreApplication::notifyInternal (this=0x7fff3ca83ca0, receiver=0x123dbf0, event=0x7fff3ca838a0) at kernel/qcoreapplication.cpp:731
#87 0x00007f340ebadf12 in sendEvent (this=0x12ae3d0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#88 QTimerInfoList::activateTimers (this=0x12ae3d0) at kernel/qeventdispatcher_unix.cpp:604
#89 0x00007f340ebae05b in QEventDispatcherUNIX::processEvents (this=0x12052e0, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#90 0x00007f340dfe82ec in QEventDispatcherX11::processEvents (this=0x12052e0, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#91 0x00007f340eb7f882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#92 0x00007f340eb7fabc in QEventLoop::exec (this=0x7fff3ca83be0, flags=...) at kernel/qeventloop.cpp:201
#93 0x00007f340eb83ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#94 0x00007f3412b5ebfe in kdemain (argc=<value optimized out>, argv=0x7fff3ca84308) at ../../kwin/main.cpp:514
#95 0x00007f341278eeff in __libc_start_main (main=0x400730 <main(int, char**)>, argc=3, ubp_av=0x7fff3ca84308, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff3ca842f8) at libc-start.c:226
#96 0x0000000000400659 in _start ()

Possible duplicates by query: bug 280455.

Reported using DrKonqi