Application: kwin (4.8.2 (4.8.2))
KDE Platform Version: 4.8.2 (4.8.2)
Qt Version: 4.8.1
Operating System: Linux 3.3.2-1.fc16.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
- What I was doing when the application crashed:
The crashed happened when I switched windows. Though I didn't notice any strange behavior compared to before. I have KDE SC 4.8.2 from fedora since a few days but is the first time this occurs.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f0c5f632840 (LWP 1374))]

Thread 2 (Thread 0x7f0c4adfb700 (LWP 1378)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:165
#1  0x000000323c784db2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x323ca7e140) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x000000323c784de9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00000035f9a07d90 in start_thread (arg=0x7f0c4adfb700) at pthread_create.c:309
#4  0x00000035f96f0f5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f0c5f632840 (LWP 1374)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007f0c5057e728 in KWin::CoverSwitchEffect::postPaintScreen (this=0x1856470) at /usr/src/debug/kde-workspace-4.8.2/kwin/effects/coverswitch/coverswitch.cpp:411
#8  0x00000032414d12f8 in KWin::EffectsHandlerImpl::postPaintScreen (this=0x15f61d0) at /usr/src/debug/kde-workspace-4.8.2/kwin/effects.cpp:228
#9  0x00000032414d12f8 in KWin::EffectsHandlerImpl::postPaintScreen (this=0x15f61d0) at /usr/src/debug/kde-workspace-4.8.2/kwin/effects.cpp:228
#10 0x00000032414b0d1d in KWin::Scene::paintScreen (this=0x11b5db0, mask=0x7fffd841b1e8, region=0x7fffd841b2b0) at /usr/src/debug/kde-workspace-4.8.2/kwin/scene.cpp:159
#11 0x00000032414c6b3d in KWin::SceneOpenGL::paint (this=0x11b5db0, damage=..., toplevels=<optimized out>) at /usr/src/debug/kde-workspace-4.8.2/kwin/scene_opengl_glx.cpp:459
#12 0x00000032414aa8ac in KWin::Workspace::performCompositing (this=0x107b250) at /usr/src/debug/kde-workspace-4.8.2/kwin/composite.cpp:412
#13 0x00000032353924d9 in QObject::event (this=0x107b250, e=<optimized out>) at kernel/qobject.cpp:1157
#14 0x00000032359c9bc4 in notify_helper (e=0x7fffd841b9b0, receiver=0x107b250, this=0xfca8c0) at kernel/qapplication.cpp:4554
#15 QApplicationPrivate::notify_helper (this=0xfca8c0, receiver=0x107b250, e=0x7fffd841b9b0) at kernel/qapplication.cpp:4526
#16 0x00000032359cea43 in QApplication::notify (this=0x7fffd841bdd0, receiver=0x107b250, e=0x7fffd841b9b0) at kernel/qapplication.cpp:4415
#17 0x0000003238251f96 in KApplication::notify (this=0x7fffd841bdd0, receiver=0x107b250, event=0x7fffd841b9b0) at /usr/src/debug/kdelibs-4.8.2/kdeui/kernel/kapplication.cpp:311
#18 0x00000032353798dc in QCoreApplication::notifyInternal (this=0x7fffd841bdd0, receiver=0x107b250, event=0x7fffd841b9b0) at kernel/qcoreapplication.cpp:876
#19 0x00000032353aa392 in sendEvent (event=0x7fffd841b9b0, receiver=<optimized out>) at kernel/qcoreapplication.h:231
#20 QTimerInfoList::activateTimers (this=0xfcb2b8) at kernel/qeventdispatcher_unix.cpp:611
#21 0x00000032353aae54 in QEventDispatcherUNIX::processEvents (this=0xf3bb60, flags=...) at kernel/qeventdispatcher_unix.cpp:930
#22 0x0000003235a6d788 in QEventDispatcherX11::processEvents (this=0xf3bb60, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#23 0x0000003235378a12 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#24 0x0000003235378c67 in QEventLoop::exec (this=0x7fffd841bd10, flags=...) at kernel/qeventloop.cpp:204
#25 0x000000323537d665 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#26 0x0000003241460796 in kdemain (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kde-workspace-4.8.2/kwin/main.cpp:541
#27 0x00000035f962169d in __libc_start_main (main=0x400860 <main(int, char**)>, argc=3, ubp_av=0x7fffd841c4f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffd841c4e8) at libc-start.c:226
#28 0x0000000000400891 in _start ()

This bug may be a duplicate of or related to bug 292614.

Possible duplicates by query: bug 292614.

Reported using DrKonqi