Application: kwin (4.6.5 (4.6.5))
KDE Platform Version: 4.6.5 (4.6.5)
Qt Version: 4.7.4
Operating System: Linux 2.6.41.10-3.fc15.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
- What I was doing when the application crashed:
I left clicked the kickoff start button; nothing else special or unusual...

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f43ff5de840 (LWP 1450))]

Thread 2 (Thread 0x7f43f13f9700 (LWP 1486)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x0000003262f84d62 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x326327dc20) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x0000003262f84d99 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x0000003247a07b41 in start_thread (arg=0x7f43f13f9700) at pthread_create.c:305
#4  0x0000003246edf49d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f43ff5de840 (LWP 1450)):
[KCrash Handler]
#6  KWin::CloseWindowView::hide (this=0x0) at /usr/src/debug/kdebase-workspace-4.6.5/kwin/effects/presentwindows/presentwindows.cpp:2096
#7  0x00007f43f14f407f in setHighlightedWindow (w=0x0, this=0x5d10a10) at /usr/src/debug/kdebase-workspace-4.6.5/kwin/effects/presentwindows/presentwindows.cpp:1776
#8  KWin::PresentWindowsEffect::setHighlightedWindow (this=0x5d10a10, w=0x0) at /usr/src/debug/kdebase-workspace-4.6.5/kwin/effects/presentwindows/presentwindows.cpp:1771
#9  0x00007f43f14ffed3 in KWin::PresentWindowsEffect::windowClosed (this=0x5d10a10, w=0x157f5a0) at /usr/src/debug/kdebase-workspace-4.6.5/kwin/effects/presentwindows/presentwindows.cpp:424
#10 0x00000032620df020 in KWin::EffectsHandlerImpl::windowClosed (this=<optimized out>, c=0x157f5a0) at /usr/src/debug/kdebase-workspace-4.6.5/kwin/effects.cpp:322
#11 0x000000326204c81d in KWin::Client::releaseWindow (this=0x3afbcd0, on_shutdown=false) at /usr/src/debug/kdebase-workspace-4.6.5/kwin/client.cpp:238
#12 0x000000326207b929 in KWin::Client::windowEvent (this=0x3afbcd0, e=0x7fffcd787ff0) at /usr/src/debug/kdebase-workspace-4.6.5/kwin/events.cpp:655
#13 0x000000326207bf0d in KWin::Workspace::workspaceEvent (this=0x17d5190, e=0x7fffcd787ff0) at /usr/src/debug/kdebase-workspace-4.6.5/kwin/events.cpp:309
#14 0x0000003262057ad8 in KWin::Application::x11EventFilter (this=0x7fffcd788300, e=0x7fffcd787ff0) at /usr/src/debug/kdebase-workspace-4.6.5/kwin/main.cpp:367
#15 0x000000325502ad65 in qt_x11EventFilter (ev=0x7fffcd787ff0) at kernel/qapplication_x11.cpp:435
#16 qt_x11EventFilter (ev=0x7fffcd787ff0) at kernel/qapplication_x11.cpp:423
#17 0x0000003255037d88 in QApplication::x11ProcessEvent (this=0x7fffcd788300, event=0x7fffcd787ff0) at kernel/qapplication_x11.cpp:3305
#18 0x00000032550609ca in QEventDispatcherX11::processEvents (this=0x133e160, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#19 0x0000003251b59e02 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#20 0x0000003251b59fff in QEventLoop::exec (this=0x7fffcd788240, flags=...) at kernel/qeventloop.cpp:201
#21 0x0000003251b5e117 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#22 0x000000326205a02d in kdemain (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kdebase-workspace-4.6.5/kwin/main.cpp:542
#23 0x0000003246e2135d in __libc_start_main (main=0x400810 <main(int, char**)>, argc=1, ubp_av=0x7fffcd788998, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffcd788988) at libc-start.c:226
#24 0x0000000000400841 in _start ()

Possible duplicates by query: bug 283380, bug 280296, bug 275099, bug 273279, bug 271087.

Reported using DrKonqi