Application: kwin (4.11.9)
KDE Platform Version: 4.13.1
Qt Version: 4.8.6
Operating System: Linux 3.14-1-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

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

pushed window menu and selected "activities", just after that kwin crashed and even did not show me my activities

-- 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 0x7f7294c55940 (LWP 24950))]

Thread 2 (Thread 0x7f7272075700 (LWP 24961)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f729363f7fa in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f729363f829 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f728c0af0ca in start_thread (arg=0x7f7272075700) at pthread_create.c:309
#4  0x00007f729444306d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f7294c55940 (LWP 24950)):
[KCrash Handler]
#5  begin (this=0xb9) at ../../include/QtCore/../../src/corelib/tools/qlist.h:101
#6  contains (t=@0x7ffff2217308: 0x28a0000, this=0xb9) at ../../include/QtCore/../../src/corelib/tools/qlist.h:882
#7  QActionGroup::addAction (this=0x1b965b0, a=0x28a0000) at kernel/qactiongroup.cpp:180
#8  0x00007f72947a7f1c in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#9  0x00007f728e6fda0a in QMetaObject::activate (sender=sender@entry=0x1ee1310, m=m@entry=0x7f728e53fd20 <QMenu::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3567
#10 0x00007f728deaad20 in QMenu::aboutToShow (this=this@entry=0x1ee1310) at .moc/release-shared/moc_qmenu.cpp:164
#11 0x00007f728deadc7c in QMenu::popup (this=0x1ee1310, p=..., atAction=atAction@entry=0x0) at widgets/qmenu.cpp:1843
#12 0x00007f728deaf3ab in QMenu::internalDelayedPopup (this=this@entry=0x24fa6b0) at widgets/qmenu.cpp:3063
#13 0x00007f728deb0e04 in QMenu::timerEvent (this=0x24fa6b0, e=<optimized out>) at widgets/qmenu.cpp:2923
#14 0x00007f728e701d9b in QObject::event (this=0x24fa6b0, e=<optimized out>) at kernel/qobject.cpp:1253
#15 0x00007f728dace093 in QWidget::event (this=0x28a0000, this@entry=0x24fa6b0, event=0x28a0000, event@entry=0x7ffff2217ab0) at kernel/qwidget.cpp:8859
#16 0x00007f728deb34ab in QMenu::event (this=0x24fa6b0, e=0x7ffff2217ab0) at widgets/qmenu.cpp:2480
#17 0x00007f728da7dc0c in QApplicationPrivate::notify_helper (this=this@entry=0x19c88c0, receiver=receiver@entry=0x24fa6b0, e=e@entry=0x7ffff2217ab0) at kernel/qapplication.cpp:4570
#18 0x00007f728da84360 in QApplication::notify (this=0x7ffff2218c80, receiver=0x24fa6b0, e=0x7ffff2217ab0) at kernel/qapplication.cpp:4356
#19 0x00007f72930858da in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#20 0x00007f728e6e97fd in QCoreApplication::notifyInternal (this=0x7ffff2218c80, receiver=0x24fa6b0, event=event@entry=0x7ffff2217ab0) at kernel/qcoreapplication.cpp:953
#21 0x00007f728e71949b in sendEvent (event=0x7ffff2217ab0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QTimerInfoList::activateTimers (this=0x19c9338) at kernel/qeventdispatcher_unix.cpp:621
#23 0x00007f728e719570 in QEventDispatcherUNIX::activateTimers (this=this@entry=0x18a0b30) at kernel/qeventdispatcher_unix.cpp:878
#24 0x00007f728e719ef8 in QEventDispatcherUNIX::processEvents (this=this@entry=0x18a0b30, flags=...) at kernel/qeventdispatcher_unix.cpp:940
#25 0x00007f728db1dbdf in QEventDispatcherX11::processEvents (this=0x18a0b30, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#26 0x00007f728e6e8481 in QEventLoop::processEvents (this=this@entry=0x7ffff2217e00, flags=...) at kernel/qeventloop.cpp:149
#27 0x00007f728e6e8795 in QEventLoop::exec (this=this@entry=0x7ffff2217e00, flags=...) at kernel/qeventloop.cpp:204
#28 0x00007f728deb21c7 in QMenu::exec (this=<optimized out>, p=..., action=0x0) at widgets/qmenu.cpp:2124
#29 0x00007f72947a4770 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#30 0x00007f72947a48cb in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#31 0x00007f7294152770 in KCommonDecoration::doShowWindowMenu() () from /usr/lib/libkdecorations.so.4abi2
#32 0x00007f7294153dc3 in KCommonDecoration::menuButtonPressed() () from /usr/lib/libkdecorations.so.4abi2
#33 0x00007f7294154075 in ?? () from /usr/lib/libkdecorations.so.4abi2
#34 0x00007f728e6fda0a in QMetaObject::activate (sender=sender@entry=0x1c39940, m=m@entry=0x7f728e558b60 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3567
#35 0x00007f728e0d11f0 in QAbstractButton::pressed (this=this@entry=0x1c39940) at .moc/release-shared/moc_qabstractbutton.cpp:206
#36 0x00007f728de332f6 in QAbstractButtonPrivate::emitPressed (this=this@entry=0x1d66540) at widgets/qabstractbutton.cpp:562
#37 0x00007f728de33b5c in QAbstractButton::mousePressEvent (this=0x1c39940, e=0x7ffff22180c0) at widgets/qabstractbutton.cpp:1098
#38 0x00007f729415561f in KCommonDecorationButton::mousePressEvent(QMouseEvent*) () from /usr/lib/libkdecorations.so.4abi2
#39 0x00007f728dacdee9 in QWidget::event (this=0x28a0000, event=0x28a0000) at kernel/qwidget.cpp:8385
#40 0x00007f728da7dc0c in QApplicationPrivate::notify_helper (this=this@entry=0x19c88c0, receiver=receiver@entry=0x1c39940, e=e@entry=0x7ffff2218540) at kernel/qapplication.cpp:4570
#41 0x00007f728da844ae in QApplication::notify (this=<optimized out>, receiver=0x1c39940, e=0x7ffff2218540) at kernel/qapplication.cpp:4113
#42 0x00007f72930858da in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#43 0x00007f728e6e97fd in QCoreApplication::notifyInternal (this=0x7ffff2218c80, receiver=receiver@entry=0x1c39940, event=event@entry=0x7ffff2218540) at kernel/qcoreapplication.cpp:953
#44 0x00007f728da83b6f in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#45 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x1c39940, event=event@entry=0x7ffff2218540, alienWidget=alienWidget@entry=0x0, nativeWidget=nativeWidget@entry=0x1c39940, buttonDown=buttonDown@entry=0x7f728e56a538 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3178
#46 0x00007f728daf666e in QETWidget::translateMouseEvent (this=this@entry=0x1c39940, event=event@entry=0x7ffff22188a0) at kernel/qapplication_x11.cpp:4540
#47 0x00007f728daf5022 in QApplication::x11ProcessEvent (this=<optimized out>, event=event@entry=0x7ffff22188a0) at kernel/qapplication_x11.cpp:3663
#48 0x00007f728db1db70 in QEventDispatcherX11::processEvents (this=0x18a0b30, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#49 0x00007f728e6e8481 in QEventLoop::processEvents (this=this@entry=0x7ffff2218b00, flags=...) at kernel/qeventloop.cpp:149
#50 0x00007f728e6e8795 in QEventLoop::exec (this=this@entry=0x7ffff2218b00, flags=...) at kernel/qeventloop.cpp:204
#51 0x00007f728e6edef7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#52 0x00007f7294781986 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#53 0x00007f729437eb45 in __libc_start_main (main=0x4006d0, argc=3, argv=0x7ffff2218dc8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffff2218db8) at libc-start.c:287
#54 0x00000000004006fe in _start ()

Possible duplicates by query: bug 337084, bug 336757, bug 336006, bug 335955, bug 335459.

Reported using DrKonqi