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 3.2.0-24-generic-pae i686
Distribution: Ubuntu 12.04 LTS

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

But crash reporting assistant can show.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb1aa3740 (LWP 3215))]

Thread 3 (Thread 0xadb33b40 (LWP 3456)):
#0  0xb2a43dcd in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0xb5e74315 in do_gettime (frac=0xadb330c0, sec=0xadb330b8) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0xb5f5e226 in QTimerInfoList::updateCurrentTime (this=0xad200b34) at kernel/qeventdispatcher_unix.cpp:343
#4  0xb5f5e57a in QTimerInfoList::timerWait (this=0xad200b34, tm=...) at kernel/qeventdispatcher_unix.cpp:450
#5  0xb5f6027e in QEventDispatcherUNIX::processEvents (this=0xad200488, flags=...) at kernel/qeventdispatcher_unix.cpp:913
#6  0xb5f2950d in QEventLoop::processEvents (this=0xadb33240, flags=...) at kernel/qeventloop.cpp:149
#7  0xb5f297a9 in QEventLoop::exec (this=0xadb33240, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5e1294c in QThread::exec (this=0x95f95b8) at thread/qthread.cpp:501
#9  0xb5f06b5d in QInotifyFileSystemWatcherEngine::run (this=0x95f95b8) at io/qfilesystemwatcher_inotify.cpp:248
#10 0xb5e15de0 in QThreadPrivate::start (arg=0x95f95b8) at thread/qthread_unix.cpp:298
#11 0xb29fad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb757aace in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xad1ffb40 (LWP 3458)):
#0  0xb77ac424 in __kernel_vsyscall ()
#1  0xb29fe96b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb75883dc in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb6697029 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb669706f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb29fad4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb757aace in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb1aa3740 (LWP 3215)):
[KCrash Handler]
#7  ref (this=0x70) at ../../include/QtCore/../../src/corelib/arch/qatomic_i386.h:120
#8  QRegion::operator= (this=0x9bedc28, r=...) at painting/qregion.cpp:3934
#9  0xb76fea0c in KWin::Toplevel::copyToDeleted (this=0x9bedbc0, c=0x97b0658) at ../../kwin/toplevel.cpp:131
#10 0xb77215dc in KWin::Deleted::copyToDeleted (this=0x9bedbc0, c=0x97b0658) at ../../kwin/deleted.cpp:68
#11 0xb77218cb in KWin::Deleted::create (c=0x97b0658) at ../../kwin/deleted.cpp:53
#12 0xb76fff6a in KWin::Unmanaged::release (this=0x97b0658) at ../../kwin/unmanaged.cpp:85
#13 0xb768afde in KWin::Workspace::~Workspace (this=0x9575500, __in_chrg=<optimized out>) at ../../kwin/workspace.cpp:533
#14 0xb768b8a2 in KWin::Workspace::~Workspace (this=0x9575500, __in_chrg=<optimized out>) at ../../kwin/workspace.cpp:563
#15 0xb76a543e in KWin::Application::~Application (this=0xbfb60a78, __in_chrg=<optimized out>) at ../../kwin/main.cpp:340
#16 0xb76a861d in kdemain (argc=3, argv=0xbfb60d24) at ../../kwin/main.cpp:541
#17 0x0804850b in main (argc=3, argv=0xbfb60d24) at kwin_dummy.cpp:3

Possible duplicates by query: bug 297893, bug 286637, bug 282933.

Reported using DrKonqi