Application: kwin (4.8.4 (4.8.4))
KDE Platform Version: 4.8.4 (4.8.4)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-23-generic x86_64
Distribution: Ubuntu 12.04.1 LTS

-- Information about the crash:
Every time I either log out or restart the system, kwin crashes with the attached exception.  Using Kubuntu.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9a5bfff780 (LWP 2158))]

Thread 3 (Thread 0x7f9a3bb7c700 (LWP 2248)):
#0  0x00007f9a5b80c823 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f9a57005366 in qt_safe_select (nfds=18, fdread=0x7f9a34000ac8, fdwrite=0x7f9a34000d60, fdexcept=0x7f9a34000ff8, orig_timeout=<optimized out>) at kernel/qcore_unix.cpp:83
#2  0x00007f9a5700a7b2 in QEventDispatcherUNIXPrivate::doSelect (this=0x7f9a34000910, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:223
#3  0x00007f9a5700aca3 in QEventDispatcherUNIX::processEvents (this=0x7f9a340008f0, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#4  0x00007f9a56fd7c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f9a56fd7ed7 in QEventLoop::exec (this=0x7f9a3bb7bdd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f9a56ed6fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f9a56fb79ff in QInotifyFileSystemWatcherEngine::run (this=0xe6afc0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f9a56ed9fcb in QThreadPrivate::start (arg=0xe6afc0) at thread/qthread_unix.cpp:298
#9  0x00007f9a500ffe9a in start_thread (arg=0x7f9a3bb7c700) at pthread_create.c:308
#10 0x00007f9a5b8134bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f9a3b37b700 (LWP 2251)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f9a582c9222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f9a582c9259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f9a500ffe9a in start_thread (arg=0x7f9a3b37b700) at pthread_create.c:308
#4  0x00007f9a5b8134bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f9a5bfff780 (LWP 2158)):
[KCrash Handler]
#6  0x00007f9a5bad7978 in main_arena () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007f9a5bbaa92a in KWin::Deleted::copyToDeleted (this=0x186bd30, c=0x1874c60) at ../../kwin/deleted.cpp:78
#8  0x00007f9a5bbaabad in KWin::Deleted::create (c=0x1874c60) at ../../kwin/deleted.cpp:53
#9  0x00007f9a5bb8c570 in KWin::Unmanaged::release (this=0x1874c60) at ../../kwin/unmanaged.cpp:85
#10 0x00007f9a5bb24ced in KWin::Workspace::~Workspace (this=0xd4db10, __in_chrg=<optimized out>) at ../../kwin/workspace.cpp:533
#11 0x00007f9a5bb25559 in KWin::Workspace::~Workspace (this=0xd4db10, __in_chrg=<optimized out>) at ../../kwin/workspace.cpp:563
#12 0x00007f9a5bb3c305 in KWin::Application::~Application (this=0x7fffa09632f0, __in_chrg=<optimized out>) at ../../kwin/main.cpp:340
#13 0x00007f9a5bb3ec94 in kdemain (argc=<optimized out>, argv=<optimized out>) at ../../kwin/main.cpp:541
#14 0x00007f9a5b74276d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=3, ubp_av=0x7fffa0963a18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffa0963a08) at libc-start.c:226
#15 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 293182, bug 282933.

Possible duplicates by query: bug 302768, bug 301165, bug 299933, bug 299076, bug 298011.

Reported using DrKonqi