Application: kwin (4.11.9)
KDE Platform Version: 4.13.0
Qt Version: 4.8.6
Operating System: Linux 3.13.0-29-generic x86_64
Distribution: Ubuntu 14.04 LTS

-- Information about the crash:
- Unusual behavior I noticed:

then i try to open the kwin at my desktop with rigth click on window, and more action. kwin  stop respond for some secs and the panels restart

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin), signal: Bus error
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f68e444d800 (LWP 2510))]

Thread 3 (Thread 0x7f68c3352700 (LWP 2515)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f68e2e0affb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f68e2e0b039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f68db8e2182 in start_thread (arg=0x7f68c3352700) at pthread_create.c:312
#4  0x00007f68e3c1c30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f6830803700 (LWP 2762)):
#0  0x00007f68e3c13c33 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f68ddf372c7 in qt_safe_select (nfds=30, fdread=0x7f681c000ac8, fdwrite=0x7f681c000d60, fdexcept=0x7f681c000ff8, orig_timeout=0x0) at kernel/qcore_unix.cpp:79
#2  0x00007f68ddf3c824 in QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f681c000910, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:223
#3  0x00007f68ddf3cc92 in QEventDispatcherUNIX::processEvents (this=0x7f681c0008f0, flags=...) at kernel/qeventdispatcher_unix.cpp:936
#4  0x00007f68ddf0b0af in QEventLoop::processEvents (this=this@entry=0x7f6830802da0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f68ddf0b3a5 in QEventLoop::exec (this=this@entry=0x7f6830802da0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f68dde07c5f in QThread::exec (this=this@entry=0x1d01dd0) at thread/qthread.cpp:537
#7  0x00007f68ddeec823 in QInotifyFileSystemWatcherEngine::run (this=0x1d01dd0) at io/qfilesystemwatcher_inotify.cpp:265
#8  0x00007f68dde0a32f in QThreadPrivate::start (arg=0x1d01dd0) at thread/qthread_unix.cpp:349
#9  0x00007f68db8e2182 in start_thread (arg=0x7f6830803700) at pthread_create.c:312
#10 0x00007f68e3c1c30d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f68e444d800 (LWP 2510)):
[KCrash Handler]
#6  begin (this=0x7300656c696662ec) at ../../include/QtCore/../../src/corelib/tools/qlist.h:101
#7  contains (t=@0x7fff45de2f18: 0x34ae8e0, this=0x7300656c696662ec) at ../../include/QtCore/../../src/corelib/tools/qlist.h:882
#8  QActionGroup::addAction (this=0x42b1bd0, a=0x34ae8e0) at kernel/qactiongroup.cpp:180
#9  0x00007f68e3f88e9c in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#10 0x00007f68ddf2087a in QMetaObject::activate (sender=sender@entry=0x4306250, m=m@entry=0x7f68ddd5f340 <QMenu::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#11 0x00007f68dd6cf1c0 in QMenu::aboutToShow (this=this@entry=0x4306250) at .moc/release-shared/moc_qmenu.cpp:164
#12 0x00007f68dd6d20bd in QMenu::popup (this=0x4306250, p=..., atAction=atAction@entry=0x0) at widgets/qmenu.cpp:1844
#13 0x00007f68dd6d36fb in QMenu::internalDelayedPopup (this=this@entry=0x437bf10) at widgets/qmenu.cpp:3057
#14 0x00007f68dd6d5174 in QMenu::timerEvent (this=0x437bf10, e=<optimized out>) at widgets/qmenu.cpp:2917
#15 0x00007f68ddf24a31 in QObject::event (this=this@entry=0x437bf10, e=e@entry=0x7fff45de3790) at kernel/qobject.cpp:1156
#16 0x00007f68dd2f555b in QWidget::event (this=this@entry=0x437bf10, event=event@entry=0x7fff45de3790) at kernel/qwidget.cpp:8846
#17 0x00007f68dd6d77bb in QMenu::event (this=0x437bf10, e=0x7fff45de3790) at widgets/qmenu.cpp:2481
#18 0x00007f68dd2a5e2c in QApplicationPrivate::notify_helper (this=this@entry=0x1ca72d0, receiver=receiver@entry=0x437bf10, e=e@entry=0x7fff45de3790) at kernel/qapplication.cpp:4567
#19 0x00007f68dd2ac4a0 in QApplication::notify (this=this@entry=0x7fff45de5ec0, receiver=receiver@entry=0x437bf10, e=e@entry=0x7fff45de3790) at kernel/qapplication.cpp:4353
#20 0x00007f68e285fbaa in KApplication::notify (this=0x7fff45de5ec0, receiver=0x437bf10, event=0x7fff45de3790) at ../../kdeui/kernel/kapplication.cpp:311
#21 0x00007f68ddf0c4dd in QCoreApplication::notifyInternal (this=0x7fff45de5ec0, receiver=0x437bf10, event=0x7fff45de3790) at kernel/qcoreapplication.cpp:953
#22 0x00007f68ddf3c323 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#23 QTimerInfoList::activateTimers (this=0x1ca7ef8) at kernel/qeventdispatcher_unix.cpp:621
#24 0x00007f68ddf3c3a0 in QEventDispatcherUNIX::activateTimers (this=this@entry=0x1bdbaf0) at kernel/qeventdispatcher_unix.cpp:878
#25 0x00007f68ddf3cd20 in QEventDispatcherUNIX::processEvents (this=this@entry=0x1bdbaf0, flags=...) at kernel/qeventdispatcher_unix.cpp:940
#26 0x00007f68dd3484d6 in QEventDispatcherX11::processEvents (this=0x1bdbaf0, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#27 0x00007f68ddf0b0af in QEventLoop::processEvents (this=this@entry=0x7fff45de3ae0, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f68ddf0b3a5 in QEventLoop::exec (this=this@entry=0x7fff45de3ae0, flags=...) at kernel/qeventloop.cpp:204
#29 0x00007f68dd6d6587 in QMenu::exec (this=0x437bf10, p=..., action=0x0) at widgets/qmenu.cpp:2125
#30 0x00007f68e3f8578a in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#31 0x00007f68e3f8584b in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#32 0x00007f68e3f85fca in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#33 0x00007f68e3f6ac55 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#34 0x00007f68e3f6dbda in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#35 0x00007f68c335a6cf in ?? () from /usr/lib/kde4/kwin3_aurorae.so
#36 0x00007f68c335d0aa in ?? () from /usr/lib/kde4/kwin3_aurorae.so
#37 0x00007f68c335da53 in ?? () from /usr/lib/kde4/kwin3_aurorae.so
#38 0x00007f68e33782f8 in QDeclarativeObjectMethodScriptClass::callMethod (this=this@entry=0x1ef7710, object=object@entry=0x34210d0, index=<optimized out>, returnType=<optimized out>, argCount=<optimized out>, argTypes=0x7fff45de4220, ctxt=ctxt@entry=0x7f68c26520a8) at qml/qdeclarativeobjectscriptclass.cpp:970
#39 0x00007f68e3379f28 in QDeclarativeObjectMethodScriptClass::callPrecise (this=this@entry=0x1ef7710, object=0x34210d0, data=..., ctxt=ctxt@entry=0x7f68c26520a8) at qml/qdeclarativeobjectscriptclass.cpp:944
#40 0x00007f68e337a57d in QDeclarativeObjectMethodScriptClass::callOverloaded (this=0x1ef7710, method=0x342d6d0, ctxt=0x7f68c26520a8) at qml/qdeclarativeobjectscriptclass.cpp:1064
#41 0x00007f68e337a80f in QDeclarativeObjectMethodScriptClass::call (this=<optimized out>, o=<optimized out>, ctxt=<optimized out>) at qml/qdeclarativeobjectscriptclass.cpp:919
#42 0x00007f68e2e82124 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#43 0x00007f68e2d7d118 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#44 0x00007f68e2d5afc0 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#45 0x00007f68341b0d90 in ?? ()
#46 0xffff000000000002 in ?? ()
#47 0x00007f682142ab80 in ?? ()
#48 0x00007f680000000c in ?? ()
#49 0x4032000000000003 in ?? ()
#50 0x00007f68c2652058 in ?? ()
#51 0x0000000000000002 in ?? ()
#52 0x00007f68c2652000 in ?? ()
#53 0x00007fff45de4640 in ?? ()
#54 0x0000000000000200 in ?? ()
#55 0x00007f68341b07d8 in ?? ()
#56 0x00007f68c2a55750 in ?? ()
#57 0x00007f68c26520a8 in ?? ()
#58 0x00007f68c2a5ba88 in ?? ()
#59 0x00007f68e3108dc8 in __bss_start () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#60 0x00007f68c2a5a800 in ?? ()
#61 0x00007f68c2652000 in ?? ()
#62 0x00007f68c2a5a800 in ?? ()
#63 0x00007f6821009230 in ?? ()
#64 0x0000000001da92a8 in ?? ()
#65 0x00007f68c2652048 in ?? ()
#66 0x00007f68c2a55738 in ?? ()
#67 0x00007f68e2d141f6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#68 0x00007f68e2da9286 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#69 0x00007f68e2d7d13f in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#70 0x00007f68e2e6463e in QScriptValue::call(QScriptValue const&, QList<QScriptValue> const&) () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#71 0x00007f68e32e45e5 in QDeclarativeQtScriptExpression::eval (this=this@entry=0x34887b8, secondaryScope=<optimized out>, isUndefined=0x0) at qml/qdeclarativeexpression.cpp:518
#72 0x00007f68e32e68fe in QDeclarativeQtScriptExpression::scriptValue (this=this@entry=0x34887b8, secondaryScope=secondaryScope@entry=0x39ecc80, isUndefined=isUndefined@entry=0x0) at qml/qdeclarativeexpression.cpp:470
#73 0x00007f68e32e6bfa in QDeclarativeExpressionPrivate::scriptValue (this=this@entry=0x3488730, secondaryScope=secondaryScope@entry=0x39ecc80, isUndefined=0x0) at qml/qdeclarativeexpression.cpp:653
#74 0x00007f68e32e6d21 in QDeclarativeExpressionPrivate::value (this=0x3488730, secondaryScope=0x39ecc80, isUndefined=isUndefined@entry=0x0) at qml/qdeclarativeexpression.cpp:667
#75 0x00007f68e331e2f5 in QDeclarativeBoundSignal::qt_metacall (this=0x34885e0, c=<optimized out>, id=<optimized out>, a=0x7fff45de4bd0) at qml/qdeclarativeboundsignal.cpp:199
#76 0x00007f68ddf20a78 in QMetaObject::activate (sender=sender@entry=0x3487700, m=m@entry=0x7f68e36cb900 <QDeclarativeMouseArea::staticMetaObject>, local_signal_index=local_signal_index@entry=8, argv=argv@entry=0x7fff45de4bd0) at kernel/qobject.cpp:3569
#77 0x00007f68e33d4292 in QDeclarativeMouseArea::pressed (this=this@entry=0x3487700, _t1=_t1@entry=0x7fff45de4c00) at .moc/release-shared/moc_qdeclarativemousearea_p.cpp:501
#78 0x00007f68e3287a07 in QDeclarativeMouseArea::setPressed (this=this@entry=0x3487700, p=p@entry=true) at graphicsitems/qdeclarativemousearea.cpp:920
#79 0x00007f68e3288343 in QDeclarativeMouseArea::mousePressEvent (this=0x3487700, event=0x7fff45de51d0) at graphicsitems/qdeclarativemousearea.cpp:494
#80 0x00007f68dd84f57f in QGraphicsItem::sceneEvent (this=this@entry=0x3487710, event=event@entry=0x7fff45de51d0) at graphicsview/qgraphicsitem.cpp:6752
#81 0x00007f68e327b7c4 in QDeclarativeItem::sceneEvent (this=this@entry=0x3487700, event=event@entry=0x7fff45de51d0) at graphicsitems/qdeclarativeitem.cpp:3081
#82 0x00007f68e3289231 in QDeclarativeMouseArea::sceneEvent (this=0x3487700, event=0x7fff45de51d0) at graphicsitems/qdeclarativemousearea.cpp:676
#83 0x00007f68dd8765af in QGraphicsScenePrivate::sendMouseEvent (this=0x3497150, mouseEvent=0x7fff45de51d0) at graphicsview/qgraphicsscene.cpp:1295
#84 0x00007f68dd881e26 in QGraphicsScenePrivate::mousePressEventHandler (this=this@entry=0x3497150, mouseEvent=mouseEvent@entry=0x7fff45de51d0) at graphicsview/qgraphicsscene.cpp:1422
#85 0x00007f68dd8822b9 in QGraphicsScene::mousePressEvent (this=<optimized out>, mouseEvent=0x7fff45de51d0) at graphicsview/qgraphicsscene.cpp:4074
#86 0x00007f68dd88b100 in QGraphicsScene::event (this=0x34257b0, event=0x7fff45de51d0) at graphicsview/qgraphicsscene.cpp:3455
#87 0x00007f68dd2a5e2c in QApplicationPrivate::notify_helper (this=this@entry=0x1ca72d0, receiver=receiver@entry=0x34257b0, e=e@entry=0x7fff45de51d0) at kernel/qapplication.cpp:4567
#88 0x00007f68dd2ac4a0 in QApplication::notify (this=this@entry=0x7fff45de5ec0, receiver=receiver@entry=0x34257b0, e=e@entry=0x7fff45de51d0) at kernel/qapplication.cpp:4353
#89 0x00007f68e285fbaa in KApplication::notify (this=0x7fff45de5ec0, receiver=0x34257b0, event=0x7fff45de51d0) at ../../kdeui/kernel/kapplication.cpp:311
#90 0x00007f68ddf0c4dd in QCoreApplication::notifyInternal (this=0x7fff45de5ec0, receiver=0x34257b0, event=event@entry=0x7fff45de51d0) at kernel/qcoreapplication.cpp:953
#91 0x00007f68dd2a4556 in sendSpontaneousEvent (event=event@entry=0x7fff45de51d0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#92 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7fff45de51d0) at kernel/qapplication.cpp:5565
#93 0x00007f68dd8a1a5f in QGraphicsView::mousePressEvent (this=0x347c740, event=0x7fff45de5740) at graphicsview/qgraphicsview.cpp:3164
#94 0x00007f68dd2f537b in QWidget::event (this=this@entry=0x347c740, event=event@entry=0x7fff45de5740) at kernel/qwidget.cpp:8372
#95 0x00007f68dd696fce in QFrame::event (this=0x347c740, e=0x7fff45de5740) at widgets/qframe.cpp:557
#96 0x00007f68dd8a27b9 in QGraphicsView::viewportEvent (this=0x347c740, event=0x7fff45de5740) at graphicsview/qgraphicsview.cpp:2866
#97 0x00007f68ddf0c646 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x1ca72d0, receiver=receiver@entry=0x36053d0, event=event@entry=0x7fff45de5740) at kernel/qcoreapplication.cpp:1063
#98 0x00007f68dd2a5e0c in QApplicationPrivate::notify_helper (this=this@entry=0x1ca72d0, receiver=receiver@entry=0x36053d0, e=e@entry=0x7fff45de5740) at kernel/qapplication.cpp:4563
#99 0x00007f68dd2ac5dd in QApplication::notify (this=this@entry=0x7fff45de5ec0, receiver=receiver@entry=0x36053d0, e=e@entry=0x7fff45de5740) at kernel/qapplication.cpp:4110
#100 0x00007f68e285fbaa in KApplication::notify (this=0x7fff45de5ec0, receiver=0x36053d0, event=0x7fff45de5740) at ../../kdeui/kernel/kapplication.cpp:311
#101 0x00007f68ddf0c4dd in QCoreApplication::notifyInternal (this=0x7fff45de5ec0, receiver=receiver@entry=0x36053d0, event=event@entry=0x7fff45de5740) at kernel/qcoreapplication.cpp:953
#102 0x00007f68dd2abd93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#103 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x36053d0, event=event@entry=0x7fff45de5740, alienWidget=alienWidget@entry=0x0, nativeWidget=nativeWidget@entry=0x36053d0, buttonDown=buttonDown@entry=0x7f68ddd8b318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#104 0x00007f68dd3209cb in QETWidget::translateMouseEvent (this=this@entry=0x36053d0, event=event@entry=0x7fff45de5ad0) at kernel/qapplication_x11.cpp:4634
#105 0x00007f68dd320269 in QApplication::x11ProcessEvent (this=0x7fff45de5ec0, event=event@entry=0x7fff45de5ad0) at kernel/qapplication_x11.cpp:3627
#106 0x00007f68dd348470 in QEventDispatcherX11::processEvents (this=0x1bdbaf0, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#107 0x00007f68ddf0b0af in QEventLoop::processEvents (this=this@entry=0x7fff45de5d30, flags=...) at kernel/qeventloop.cpp:149
#108 0x00007f68ddf0b3a5 in QEventLoop::exec (this=this@entry=0x7fff45de5d30, flags=...) at kernel/qeventloop.cpp:204
#109 0x00007f68ddf10b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#110 0x00007f68e3f62906 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#111 0x00007f68e3b42ec5 in __libc_start_main (main=0x4006d0, argc=3, argv=0x7fff45de6008, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff45de5ff8) at libc-start.c:287
#112 0x00000000004006fe in _start ()

Possible duplicates by query: bug 335459, bug 335244, bug 335215, bug 334539, bug 334152.

Reported using DrKonqi