Application: kwin (4.9.97)
KDE Platform Version: 4.9.97
Qt Version: 4.8.3
Operating System: Linux 3.5.0-18-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
- What I was doing when the application crashed:
I changed the window decoration from Plasik QML to Oxygen. When I hit apply, KWin crashes reproducibly and restarts then with the Oxygen theme.

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 0x7f03d229f7c0 (LWP 7810))]

Thread 4 (Thread 0x7f03c4fd1700 (LWP 7821)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x0000003fd9d84cd7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x0000003fd9d84d09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x000000356de07e9a in start_thread (arg=0x7f03c4fd1700) at pthread_create.c:308
#4  0x000000356d6f3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f03cd3a1700 (LWP 9512)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:215
#1  0x0000003fce67bfa7 in wait (time=30000, this=0x104a300) at thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x104a2a8, time=30000) at thread/qwaitcondition_unix.cpp:158
#3  0x0000003fce66f54f in QThreadPoolThread::run (this=0x1090900) at concurrent/qthreadpool.cpp:141
#4  0x0000003fce67baec in QThreadPrivate::start (arg=0x1090900) at thread/qthread_unix.cpp:338
#5  0x000000356de07e9a in start_thread (arg=0x7f03cd3a1700) at pthread_create.c:308
#6  0x000000356d6f3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f03c7fff700 (LWP 9513)):
#0  0x000000356d6ed023 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x0000003fce7a4023 in qt_safe_select (nfds=20, fdread=0x7f03c0000ac8, fdwrite=0x7f03c0000d60, fdexcept=0x7f03c0000ff8, orig_timeout=0x0) at kernel/qcore_unix.cpp:83
#2  0x0000003fce7a89e4 in QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f03c0000910, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:223
#3  0x0000003fce7a9572 in QEventDispatcherUNIX::processEvents (this=0x7f03c00008f0, flags=...) at kernel/qeventdispatcher_unix.cpp:926
#4  0x0000003fce7772bf in QEventLoop::processEvents (this=this@entry=0x7f03c7ffed90, flags=...) at kernel/qeventloop.cpp:149
#5  0x0000003fce777548 in QEventLoop::exec (this=0x7f03c7ffed90, flags=...) at kernel/qeventloop.cpp:204
#6  0x0000003fce678b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x0000003fce7579af in QInotifyFileSystemWatcherEngine::run (this=0x1fa6fd0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x0000003fce67baec in QThreadPrivate::start (arg=0x1fa6fd0) at thread/qthread_unix.cpp:338
#9  0x000000356de07e9a in start_thread (arg=0x7f03c7fff700) at pthread_create.c:308
#10 0x000000356d6f3cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f03d229f7c0 (LWP 7810)):
[KCrash Handler]
#6  0x000000000101d290 in ?? ()
#7  0x0000003fdb756dd7 in QDeclarativeItem::~QDeclarativeItem (this=0x1d0ddf0, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#8  0x0000003fdb71a6ee in ~QDeclarativeElement (this=0x1d0ddf0, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#9  QDeclarativePrivate::QDeclarativeElement<QDeclarativeItem>::~QDeclarativeElement (this=0x1d0ddf0, __in_chrg=<optimized out>) at ../../include/QtDeclarative/../../src/declarative/qml/qdeclarativeprivate.h:87
#10 0x0000003fce78d468 in QObject::event (this=0x1d0ddf0, e=<optimized out>) at kernel/qobject.cpp:1176
#11 0x0000003fd03cbe9c in QApplicationPrivate::notify_helper (this=this@entry=0xe37730, receiver=receiver@entry=0x1d0ddf0, e=e@entry=0x1cd0eb0) at kernel/qapplication.cpp:4562
#12 0x0000003fd03d030a in QApplication::notify (this=0x7fff6f650d30, receiver=0x1d0ddf0, e=0x1cd0eb0) at kernel/qapplication.cpp:4423
#13 0x00000031db628626 in KApplication::notify (this=0x7fff6f650d30, receiver=0x1d0ddf0, event=0x1cd0eb0) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x0000003fce77856e in QCoreApplication::notifyInternal (this=0x7fff6f650d30, receiver=receiver@entry=0x1d0ddf0, event=event@entry=0x1cd0eb0) at kernel/qcoreapplication.cpp:915
#15 0x0000003fce77c3f1 in sendEvent (event=0x1cd0eb0, receiver=0x1d0ddf0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xdc91f0) at kernel/qcoreapplication.cpp:1539
#17 0x0000003fd047189c in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 QEventDispatcherX11::processEvents (this=0xdcaad0, flags=...) at kernel/qeventdispatcher_x11.cpp:75
#19 0x0000003fce7772bf in QEventLoop::processEvents (this=this@entry=0x7fff6f650a40, flags=...) at kernel/qeventloop.cpp:149
#20 0x0000003fce777548 in QEventLoop::exec (this=0x7fff6f650a40, flags=...) at kernel/qeventloop.cpp:204
#21 0x0000003fce77c708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#22 0x000000382366733a in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#23 0x000000356d62176d in __libc_start_main (main=0x4006a0, argc=1, ubp_av=0x7fff6f650e78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff6f650e68) at libc-start.c:226
#24 0x00000000004006d1 in _start ()

Possible duplicates by query: bug 312399, bug 312230, bug 311110, bug 311018, bug 304617.

Reported using DrKonqi