Application: kwin (4.6.3 (4.6.3))
KDE Platform Version: 4.6.3 (4.6.3)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-9-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:

I was move mouse to the corner of screen to present all windows

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7838720 (LWP 1488))]

Thread 3 (Thread 0xb34d2b70 (LWP 1537)):
#0  0x01298d41 in clock_gettime (clock_id=1, tp=0xb34d2120) at ../sysdeps/unix/clock_gettime.c:116
#1  0x055cddd8 in do_gettime () at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x0569a4f2 in updateCurrentTime (this=0xa1cd530, tm=...) at kernel/qeventdispatcher_unix.cpp:339
#4  QTimerInfoList::timerWait (this=0xa1cd530, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x0569c3a3 in QEventDispatcherUNIX::processEvents (this=0xa1f1ff8, flags=...) at kernel/qeventdispatcher_unix.cpp:906
#6  0x0566b289 in QEventLoop::processEvents (this=0xb34d2280, flags=...) at kernel/qeventloop.cpp:149
#7  0x0566b522 in QEventLoop::exec (this=0xb34d2280, flags=...) at kernel/qeventloop.cpp:201
#8  0x055752a0 in QThread::exec (this=0xa1ceb98) at thread/qthread.cpp:492
#9  0x0564cfdb in QInotifyFileSystemWatcherEngine::run (this=0xa1ceb98) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x05577da2 in QThreadPrivate::start (arg=0xa1ceb98) at thread/qthread_unix.cpp:320
#11 0x0818de99 in start_thread (arg=0xb34d2b70) at pthread_create.c:304
#12 0x001e073e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xb2affb70 (LWP 1538)):
#0  0x00456416 in __kernel_vsyscall ()
#1  0x0819248c in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x001ee3fd in __pthread_cond_wait (cond=0xeed2b0, mutex=0xeed298) at forward.c:139
#3  0x00dd4817 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0xee81c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x00dd4851 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0xee81c0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x0818de99 in start_thread (arg=0xb2affb70) at pthread_create.c:304
#6  0x001e073e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb7838720 (LWP 1488)):
[KCrash Handler]
#7  KWin::CloseWindowView::hide (this=0x0) at ../../../kwin/effects/presentwindows/presentwindows.cpp:2096
#8  0x027a2276 in KWin::PresentWindowsEffect::setHighlightedWindow (this=0x9ef5830, w=0x0) at ../../../kwin/effects/presentwindows/presentwindows.cpp:1776
#9  0x027ae104 in KWin::PresentWindowsEffect::windowClosed (this=0x9ef5830, w=0x9ed58a0) at ../../../kwin/effects/presentwindows/presentwindows.cpp:424
#10 0x0097a424 in KWin::EffectsHandlerImpl::windowClosed (this=0x9eca1e0, c=0x9ed58a0) at ../../kwin/effects.cpp:322
#11 0x008d8d7b in KWin::Client::releaseWindow (this=0xa239888, on_shutdown=false) at ../../kwin/client.cpp:238
#12 0x0090703d in KWin::Client::unmapNotifyEvent (this=0xa239888, e=0xbff4202c) at ../../kwin/events.cpp:809
#13 0x0090abec in KWin::Client::windowEvent (this=0xa239888, e=0xbff4202c) at ../../kwin/events.cpp:655
#14 0x0090ae9c in KWin::Workspace::workspaceEvent (this=0x9eb21c0, e=0xbff4202c) at ../../kwin/events.cpp:309
#15 0x008e4a22 in KWin::Application::x11EventFilter (this=0xbff42214, e=0xbff4202c) at ../../kwin/main.cpp:367
#16 0x05d71e14 in qt_x11EventFilter (ev=0xbff4202c) at kernel/qapplication_x11.cpp:440
#17 0x05d82c07 in QApplication::x11ProcessEvent (this=0xbff42214, event=0xbff4202c) at kernel/qapplication_x11.cpp:3390
#18 0x05daf6e0 in QEventDispatcherX11::processEvents (this=0x9d27aa8, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#19 0x0566b289 in QEventLoop::processEvents (this=0xbff42154, flags=...) at kernel/qeventloop.cpp:149
#20 0x0566b522 in QEventLoop::exec (this=0xbff42154, flags=...) at kernel/qeventloop.cpp:201
#21 0x0566fecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#22 0x05cf88e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#23 0x008e74d2 in kdemain (argc=3, argv=0xbff42494) at ../../kwin/main.cpp:542
#24 0x080485bb in main (argc=3, argv=0xbff42494) at kwin_dummy.cpp:3

This bug may be a duplicate of or related to bug 266364.

Possible duplicates by query: bug 271087, bug 270872, bug 269270, bug 266364.

Reported using DrKonqi