Application: kwin (4.10.00)
KDE Platform Version: 4.10.00
Qt Version: 4.8.3
Operating System: Linux 3.7.0-7-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
- What I was doing when the application crashed:
I tried to change the window decoration
- Unusual behavior I noticed:
absolutely nothing. The app itself was restarted

Sorry, I'm from Russia and I know English is very bad. Therefore used a translator.

The crash can be reproduced some of the 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 0x7f04b21a57c0 (LWP 2164))]

Thread 3 (Thread 0x7f0495d4b700 (LWP 2168)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f04ae2afcd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f04ae2afd09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f04a5d92e9a in start_thread (arg=0x7f0495d4b700) at pthread_create.c:308
#4  0x00007f04b19b8cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f048796a700 (LWP 2290)):
#0  0x00007f04b19b2023 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f04acdff023 in qt_safe_select (nfds=22, fdread=0x7f047c000ac8, fdwrite=0x7f047c000d60, fdexcept=0x7f047c000ff8, orig_timeout=0x0) at kernel/qcore_unix.cpp:83
#2  0x00007f04ace039e4 in QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f047c000910, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:223
#3  0x00007f04ace04572 in QEventDispatcherUNIX::processEvents (this=0x7f047c0008f0, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#4  0x00007f04acdd22bf in QEventLoop::processEvents (this=this@entry=0x7f0487969d90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f04acdd2548 in QEventLoop::exec (this=0x7f0487969d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f04accd3b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007f04acdb29af in QInotifyFileSystemWatcherEngine::run (this=0x25fe350) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f04accd6aec in QThreadPrivate::start (arg=0x25fe350) at thread/qthread_unix.cpp:338
#9  0x00007f04a5d92e9a in start_thread (arg=0x7f048796a700) at pthread_create.c:308
#10 0x00007f04b19b8cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f04b21a57c0 (LWP 2164)):
[KCrash Handler]
#6  0x00007f04b0939dd4 in QDeclarativeItem::~QDeclarativeItem (this=0x2b10740, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007f04b08fd6ee in ~QDeclarativeElement (this=0x2b10740, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<QDeclarativeItem>::~QDeclarativeElement (this=0x2b10740, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#9  0x00007f04acde8468 in QObject::event (this=0x2b10740, e=<optimized out>) at kernel/qobject.cpp:1176
#10 0x00007f04ac17ae9c in QApplicationPrivate::notify_helper (this=this@entry=0x19b80d0, receiver=receiver@entry=0x2b10740, e=e@entry=0x2839400) at kernel/qapplication.cpp:4562
#11 0x00007f04ac17f30a in QApplication::notify (this=0x7fffbe48acd0, receiver=0x2b10740, e=0x2839400) at kernel/qapplication.cpp:4423
#12 0x00007f04b14a6636 in KApplication::notify (this=0x7fffbe48acd0, receiver=0x2b10740, event=0x2839400) at ../../kdeui/kernel/kapplication.cpp:311
#13 0x00007f04acdd356e in QCoreApplication::notifyInternal (this=0x7fffbe48acd0, receiver=receiver@entry=0x2b10740, event=event@entry=0x2839400) at kernel/qcoreapplication.cpp:915
#14 0x00007f04acdd73f1 in sendEvent (event=0x2839400, receiver=0x2b10740) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#15 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x19491f0) at kernel/qcoreapplication.cpp:1539
#16 0x00007f04ac22089c in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#17 QEventDispatcherX11::processEvents (this=0x194aad0, flags=...) at kernel/qeventdispatcher_x11.cpp:75
#18 0x00007f04acdd22bf in QEventLoop::processEvents (this=this@entry=0x7fffbe48a9e0, flags=...) at kernel/qeventloop.cpp:149
#19 0x00007f04acdd2548 in QEventLoop::exec (this=0x7fffbe48a9e0, flags=...) at kernel/qeventloop.cpp:204
#20 0x00007f04acdd7708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#21 0x00007f04b1cebd5a in kdemain (argc=1, argv=0x7fffbe48ae18) at ../../kwin/main.cpp:537
#22 0x00007f04b18e676d in __libc_start_main (main=0x4006a0 <main(int, char**)>, argc=1, ubp_av=0x7fffbe48ae18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffbe48ae08) at libc-start.c:226
#23 0x00000000004006d1 in _start ()

This bug may be a duplicate of or related to bug 311018.

Possible duplicates by query: bug 314891, bug 314758, bug 314737, bug 314716, bug 314606.

Reported using DrKonqi