Application: kwin (4.6.5 (4.6.5))
KDE Platform Version: 4.6.5 (4.6.5)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-10-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed: I was in the middle of grouping Easytag into Amarok when Kwin crashed. Currently using Neon by Fruit decoration, noticed that tabs do not show in groups (just a little more info, in case it helps). Also noticed an unrecoverable crash prior to rebooting when trying to run Chrome from Krunner.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f7cf10697c0 (LWP 2015))]

Thread 3 (Thread 0x7f7cd45cf700 (LWP 2027)):
#0  __libc_enable_asynccancel () at ../nptl/sysdeps/unix/sysv/linux/x86_64/cancellation.S:66
#1  0x00007f7cf08b4135 in select () at ../sysdeps/unix/syscall-template.S:82
#2  0x00007f7cecc0232c in qt_safe_select (nfds=21, fdread=0x2177d90, fdwrite=0x2178028, fdexcept=0x21782c0, orig_timeout=<value optimized out>) at kernel/qcore_unix.cpp:82
#3  0x00007f7cecc073d0 in QEventDispatcherUNIXPrivate::doSelect (this=0x2177bd0, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:219
#4  0x00007f7cecc0804a in QEventDispatcherUNIX::processEvents (this=0x2177280, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#5  0x00007f7cecbd9882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f7cecbd9abc in QEventLoop::exec (this=0x7f7cd45cecd0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f7cecaf0924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#8  0x00007f7cecbbbc2f in QInotifyFileSystemWatcherEngine::run (this=0x2154950) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f7cecaf3175 in QThreadPrivate::start (arg=0x2154950) at thread/qthread_unix.cpp:320
#10 0x00007f7cee115853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#11 0x00007f7ce71e1d8c in start_thread (arg=0x7f7cd45cf700) at pthread_create.c:304
#12 0x00007f7cf08bc04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f7cd3dbe700 (LWP 2028)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f7cef71a2a2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f7cefa33180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f7cef71a2d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f7cefa41254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f7cee115853 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#4  0x00007f7ce71e1d8c in start_thread (arg=0x7f7cd3dbe700) at pthread_create.c:304
#5  0x00007f7cf08bc04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f7cf10697c0 (LWP 2015)):
[KCrash Handler]
#6  ref (this=0x38df0f0, full=true) at /usr/include/qt4/QtCore/qatomic_x86_64.h:121
#7  QString (this=0x38df0f0, full=true) at /usr/include/qt4/QtCore/qstring.h:729
#8  operator+ (this=0x38df0f0, full=true) at /usr/include/qt4/QtCore/qstring.h:1024
#9  KWin::Client::caption (this=0x38df0f0, full=true) at ../../kwin/client.cpp:1855
#10 0x00007f7cf0c05fa4 in KWin::Workspace::groupTabPopupAboutToShow (this=0x16a6500) at ../../kwin/useractions.cpp:448
#11 0x00007f7cf0ba64af in KWin::Workspace::qt_metacall (this=0x16a6500, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff0d7a3530) at ./workspace.moc:580
#12 0x00007f7cecbef5f8 in QMetaObject::activate (sender=0x392e280, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3287
#13 0x00007f7cec3d8802 in QMenu::popup (this=0x392e280, p=..., atAction=0x0) at widgets/qmenu.cpp:1819
#14 0x00007f7cec3daeee in QMenu::internalDelayedPopup (this=0x2566c40) at widgets/qmenu.cpp:3011
#15 0x00007f7cec3db3a4 in QMenu::timerEvent (this=0x2566c40, e=<value optimized out>) at widgets/qmenu.cpp:2851
#16 0x00007f7cecbee1c9 in QObject::event (this=0x2566c40, e=<value optimized out>) at kernel/qobject.cpp:1190
#17 0x00007f7cebfe867d in QWidget::event (this=0x2566c40, event=0x7fff0d7a4180) at kernel/qwidget.cpp:8718
#18 0x00007f7cec3dcb8b in QMenu::event (this=0x2566c40, e=0x7fff0d7a4180) at widgets/qmenu.cpp:2415
#19 0x00007f7cebf979f4 in QApplicationPrivate::notify_helper (this=0x1708600, receiver=0x2566c40, e=0x7fff0d7a4180) at kernel/qapplication.cpp:4462
#20 0x00007f7cebf9c3ba in QApplication::notify (this=<value optimized out>, receiver=0x2566c40, e=0x7fff0d7a4180) at kernel/qapplication.cpp:4341
#21 0x00007f7cf03b76c6 in KApplication::notify (this=0x7fff0d7a6830, receiver=0x2566c40, event=0x7fff0d7a4180) at ../../kdeui/kernel/kapplication.cpp:311
#22 0x00007f7cecbda49c in QCoreApplication::notifyInternal (this=0x7fff0d7a6830, receiver=0x2566c40, event=0x7fff0d7a4180) at kernel/qcoreapplication.cpp:731
#23 0x00007f7cecc07f12 in sendEvent (this=0x17091c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#24 QTimerInfoList::activateTimers (this=0x17091c0) at kernel/qeventdispatcher_unix.cpp:604
#25 0x00007f7cecc0805b in QEventDispatcherUNIX::processEvents (this=0x166d340, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#26 0x00007f7cec0422ec in QEventDispatcherX11::processEvents (this=0x166d340, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#27 0x00007f7cecbd9882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f7cecbd9abc in QEventLoop::exec (this=0x7fff0d7a44c0, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f7cec3d9101 in QMenu::exec (this=0x2566c40, p=..., action=0x0) at widgets/qmenu.cpp:2059
#30 0x00007f7cf0c0734f in KWin::Workspace::showWindowMenu (this=0x16a6500, pos=..., cl=<value optimized out>) at ../../kwin/useractions.cpp:1731
#31 0x00007f7cf0bb6eb0 in showWindowMenu (this=0x2f26610, index=0, pos=...) at ../../kwin/scripting/./../workspace.h:1221
#32 displayClientMenu (this=0x2f26610, index=0, pos=...) at ../../kwin/clientgroup.cpp:250
#33 KWin::ClientGroup::displayClientMenu (this=0x2f26610, index=0, pos=...) at ../../kwin/clientgroup.cpp:245
#34 0x00007f7cd6912a4a in Aurorae::AuroraeClient::tabMouseButtonPress (this=0x3615950, e=0x7fff0d7a5290, index=0) at ../../../../../kwin/clients/aurorae/src/aurorae.cpp:458
#35 0x00007f7cd6912ce9 in Aurorae::AuroraeClient::qt_metacall (this=0x3615950, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff0d7a4790) at ./aurorae.moc:106
#36 0x00007f7cecbef5f8 in QMetaObject::activate (sender=0x31cca00, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff0d7a4790) at kernel/qobject.cpp:3287
#37 0x00007f7cd6910270 in Aurorae::AuroraeScene::tabMouseButtonPress (this=<value optimized out>, _t1=0x7fff0d7a5290, _t2=0) at moc_auroraescene.cpp:276
#38 0x00007f7cd6910522 in Aurorae::AuroraeScene::qt_metacall (this=0x31cca00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff0d7a48f0) at moc_auroraescene.cpp:135
#39 0x00007f7cecbef5f8 in QMetaObject::activate (sender=0x43f5160, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff0d7a48f0) at kernel/qobject.cpp:3287
#40 0x00007f7cd691075d in Aurorae::AuroraeTab::mouseButtonPress (this=<value optimized out>, _t1=0x7fff0d7a5290, _t2=0) at moc_auroraetab.cpp:103
#41 0x00007f7cec56743f in QGraphicsItem::sceneEvent (this=0x43f5170, event=0x7fff0d7a5290) at graphicsview/qgraphicsitem.cpp:6718
#42 0x00007f7cec590288 in QGraphicsScenePrivate::sendMouseEvent (this=0x3641f60, mouseEvent=0x7fff0d7a5290) at graphicsview/qgraphicsscene.cpp:1281
#43 0x00007f7cec5990cc in QGraphicsScenePrivate::mousePressEventHandler (this=0x3641f60, mouseEvent=0x7fff0d7a5290) at graphicsview/qgraphicsscene.cpp:1406
#44 0x00007f7cec59966f in QGraphicsScene::mousePressEvent (this=<value optimized out>, mouseEvent=0x7fff0d7a5290) at graphicsview/qgraphicsscene.cpp:4053
#45 0x00007f7cd691a069 in Aurorae::AuroraeScene::mousePressEvent (this=0x31cca00, event=0x7fff0d7a5290) at ../../../../../kwin/clients/aurorae/src/lib/auroraescene.cpp:937
#46 0x00007f7cec5a2e6f in QGraphicsScene::event (this=0x31cca00, event=0x7fff0d7a5290) at graphicsview/qgraphicsscene.cpp:3437
#47 0x00007f7cebf979f4 in QApplicationPrivate::notify_helper (this=0x1708600, receiver=0x31cca00, e=0x7fff0d7a5290) at kernel/qapplication.cpp:4462
#48 0x00007f7cebf9c3ba in QApplication::notify (this=<value optimized out>, receiver=0x31cca00, e=0x7fff0d7a5290) at kernel/qapplication.cpp:4341
#49 0x00007f7cf03b76c6 in KApplication::notify (this=0x7fff0d7a6830, receiver=0x31cca00, event=0x7fff0d7a5290) at ../../kdeui/kernel/kapplication.cpp:311
#50 0x00007f7cecbda49c in QCoreApplication::notifyInternal (this=0x7fff0d7a6830, receiver=0x31cca00, event=0x7fff0d7a5290) at kernel/qcoreapplication.cpp:731
#51 0x00007f7cec5b4c9f in QGraphicsView::mousePressEvent (this=0x38a7330, event=0x7fff0d7a5c90) at graphicsview/qgraphicsview.cpp:3162
#52 0x00007f7cebfe8fb1 in QWidget::event (this=0x38a7330, event=0x7fff0d7a5c90) at kernel/qwidget.cpp:8255
#53 0x00007f7cec39b156 in QFrame::event (this=0x38a7330, e=0x7fff0d7a5c90) at widgets/qframe.cpp:557
#54 0x00007f7cec5bd57b in QGraphicsView::viewportEvent (this=0x38a7330, event=0x7fff0d7a5c90) at graphicsview/qgraphicsview.cpp:2864
#55 0x00007f7cecbda627 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x365d940, event=0x7fff0d7a5c90) at kernel/qcoreapplication.cpp:846
#56 0x00007f7cebf979c1 in QApplicationPrivate::notify_helper (this=0x1708600, receiver=0x365d940, e=0x7fff0d7a5c90) at kernel/qapplication.cpp:4458
#57 0x00007f7cebf9cdc3 in QApplication::notify (this=<value optimized out>, receiver=0x365d940, e=0x7fff0d7a5c90) at kernel/qapplication.cpp:4023
#58 0x00007f7cf03b76c6 in KApplication::notify (this=0x7fff0d7a6830, receiver=0x365d940, event=0x7fff0d7a5c90) at ../../kdeui/kernel/kapplication.cpp:311
#59 0x00007f7cecbda49c in QCoreApplication::notifyInternal (this=0x7fff0d7a6830, receiver=0x365d940, event=0x7fff0d7a5c90) at kernel/qcoreapplication.cpp:731
#60 0x00007f7cebf98a1d in sendEvent (receiver=0x365d940, event=0x7fff0d7a5c90, alienWidget=0x0, nativeWidget=0x365d940, buttonDown=0x7f7ceca7b218, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#61 QApplicationPrivate::sendMouseEvent (receiver=0x365d940, event=0x7fff0d7a5c90, alienWidget=0x0, nativeWidget=0x365d940, buttonDown=0x7f7ceca7b218, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3122
#62 0x00007f7cec01a190 in QETWidget::translateMouseEvent (this=0x365d940, event=<value optimized out>) at kernel/qapplication_x11.cpp:4558
#63 0x00007f7cec018ab7 in QApplication::x11ProcessEvent (this=0x7fff0d7a6830, event=0x7fff0d7a65f0) at kernel/qapplication_x11.cpp:3680
#64 0x00007f7cec042224 in QEventDispatcherX11::processEvents (this=0x166d340, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#65 0x00007f7cecbd9882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#66 0x00007f7cecbd9abc in QEventLoop::exec (this=0x7fff0d7a6770, flags=...) at kernel/qeventloop.cpp:201
#67 0x00007f7cecbddecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#68 0x00007f7cf0bc314c in kdemain (argc=<value optimized out>, argv=0x7fff0d7a6ec8) at ../../kwin/main.cpp:542
#69 0x00007f7cf07f4eff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=3, ubp_av=0x7fff0d7a6ec8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff0d7a6eb8) at libc-start.c:226
#70 0x0000000000400669 in _start ()

Possible duplicates by query: bug 277507, bug 277185, bug 275902, bug 274353, bug 265824.

Reported using DrKonqi