Application: kwin (4.8.2 (4.8.2))
KDE Platform Version: 4.8.2 (4.8.2) (Compiled from sources)
Qt Version: 4.8.1
Operating System: Linux 3.3.1 i686
Distribution: "Gentoo Base System release 2.0.3"

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

I pressed the restart button of KDE and the crash occured suddenly.
:-(

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0xb1d679b0 (LWP 3207))]

Thread 4 (Thread 0xaf486b70 (LWP 3228)):
#0  0xb7708424 in __kernel_vsyscall ()
#1  0x4ee1645c in pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x4ed8934e in __pthread_cond_wait (cond=0x9114044, mutex=0x911402c) at forward.c:139
#3  0xaf5efe5c in pipe_semaphore_wait (sema=0x911402c) at ../../../../src/gallium/auxiliary/os/os_thread.h:432
#4  thread_func (init_data=0x9113fe4) at lp_rast.c:805
#5  0x4ee11e73 in start_thread (arg=0xaf486b70) at pthread_create.c:301
#6  0x4ed7bc8e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133

Thread 3 (Thread 0xaec85b70 (LWP 3229)):
#0  0xb7708424 in __kernel_vsyscall ()
#1  0x4ee1645c in pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x4ed8934e in __pthread_cond_wait (cond=0x9114124, mutex=0x911410c) at forward.c:139
#3  0xaf5efe5c in pipe_semaphore_wait (sema=0x911410c) at ../../../../src/gallium/auxiliary/os/os_thread.h:432
#4  thread_func (init_data=0x91140c4) at lp_rast.c:805
#5  0x4ee11e73 in start_thread (arg=0xaec85b70) at pthread_create.c:301
#6  0x4ed7bc8e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133

Thread 2 (Thread 0xad765b70 (LWP 3245)):
#0  0xb7708424 in __kernel_vsyscall ()
#1  0x4ee1645c in pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:169
#2  0x4ed8934e in __pthread_cond_wait (cond=0xb6acb290, mutex=0xb6acb278) at forward.c:139
#3  0xb69b2307 in ?? () from /usr/lib/qt4/libQtScript.so.4
#4  0xb69b2351 in ?? () from /usr/lib/qt4/libQtScript.so.4
#5  0x4ee11e73 in start_thread (arg=0xad765b70) at pthread_create.c:301
#6  0x4ed7bc8e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133

Thread 1 (Thread 0xb1d679b0 (LWP 3207)):
[KCrash Handler]
#7  0xb5d4d503 in QRegion::operator=(QRegion const&) () from /usr/lib/qt4/libQtGui.so.4
#8  0xb765d2f4 in KWin::Toplevel::copyToDeleted (this=0x91c98a8, c=0x95b3ab0) at /var/tmp/portage/kde-base/kwin-4.8.2/work/kwin-4.8.2/kwin/toplevel.cpp:131
#9  0xb767fbf7 in KWin::Deleted::copyToDeleted (this=0x91c98a8, c=0x95b3ab0) at /var/tmp/portage/kde-base/kwin-4.8.2/work/kwin-4.8.2/kwin/deleted.cpp:68
#10 0xb767fecb in KWin::Deleted::create (c=0x95b3ab0) at /var/tmp/portage/kde-base/kwin-4.8.2/work/kwin-4.8.2/kwin/deleted.cpp:53
#11 0xb765e660 in KWin::Unmanaged::release (this=0x95b3ab0) at /var/tmp/portage/kde-base/kwin-4.8.2/work/kwin-4.8.2/kwin/unmanaged.cpp:85
#12 0xb75e93f5 in KWin::Workspace::~Workspace (this=0x91ec890, __in_chrg=<optimized out>) at /var/tmp/portage/kde-base/kwin-4.8.2/work/kwin-4.8.2/kwin/workspace.cpp:533
#13 0xb75e9ab3 in KWin::Workspace::~Workspace (this=0x91ec890, __in_chrg=<optimized out>) at /var/tmp/portage/kde-base/kwin-4.8.2/work/kwin-4.8.2/kwin/workspace.cpp:563
#14 0xb7603bea in KWin::Application::~Application (this=0xbf897ac8, __in_chrg=<optimized out>) at /var/tmp/portage/kde-base/kwin-4.8.2/work/kwin-4.8.2/kwin/main.cpp:340
#15 0xb7606900 in kdemain (argc=3, argv=0xbf897d74) at /var/tmp/portage/kde-base/kwin-4.8.2/work/kwin-4.8.2/kwin/main.cpp:511
#16 0x080486cb in main (argc=3, argv=0xbf897d74) at /var/tmp/portage/kde-base/kwin-4.8.2/work/kwin-4.8.2_build/kwin/kwin_dummy.cpp:3

This bug may be a duplicate of or related to bug 282933.

Possible duplicates by query: bug 286637.

Reported using DrKonqi