Application: kwin (4.8.00 (4.8.0)
KDE Platform Version: 4.8.00 (4.8.0
Qt Version: 4.7.4
Operating System: Linux 3.0.4-gentoo-r2 x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
I have pressed the Win+Tab key (or maybe Win+Shift+Tab) for switching to another desktop, and kwin crashed. Since that time, I've tried switching deslktops many times, but I wasn't able to make it crash.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7ff9d4045780 (LWP 343762))]

Thread 6 (Thread 0x7ff9bc817700 (LWP 343775)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ff9bca28643 in ?? () from /usr/lib64/dri/swrast_dri.so
#2  0x00007ff9cea75c6c in start_thread (arg=0x7ff9bc817700) at pthread_create.c:301
#3  0x00007ff9d387f84d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 5 (Thread 0x7ff9b7fff700 (LWP 343776)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ff9bca28643 in ?? () from /usr/lib64/dri/swrast_dri.so
#2  0x00007ff9cea75c6c in start_thread (arg=0x7ff9b7fff700) at pthread_create.c:301
#3  0x00007ff9d387f84d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 4 (Thread 0x7ff9b77fe700 (LWP 343777)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ff9bca28643 in ?? () from /usr/lib64/dri/swrast_dri.so
#2  0x00007ff9cea75c6c in start_thread (arg=0x7ff9b77fe700) at pthread_create.c:301
#3  0x00007ff9d387f84d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 3 (Thread 0x7ff9b6ffd700 (LWP 343778)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ff9bca28643 in ?? () from /usr/lib64/dri/swrast_dri.so
#2  0x00007ff9cea75c6c in start_thread (arg=0x7ff9b6ffd700) at pthread_create.c:301
#3  0x00007ff9d387f84d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7ff9b57a5700 (LWP 343786)):
#0  pthread_cond_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ff9d018ce54 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7ff9d04a7640) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007ff9d018ce89 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7ff9d04b5714) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007ff9cea75c6c in start_thread (arg=0x7ff9b57a5700) at pthread_create.c:301
#4  0x00007ff9d387f84d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7ff9d4045780 (LWP 343762)):
[KCrash Handler]
#6  0x00007ff9d3c2746b in KWin::TabBox::ImageProvider::requestPixmap (this=<value optimized out>, id=<value optimized out>, size=0x7fff4b5628f0, requestedSize=...) at /var/tmp/portage/kde-base/kwin-4.8.0/work/kwin-4.8.0/kwin/tabbox/declarative.cpp:79
#7  0x00007ff9d24f8950 in QDeclarativeEnginePrivate::getPixmapFromProvider (this=<value optimized out>, url=<value optimized out>, size=0x7fff4b5628f0, req_size=...) at qml/qdeclarativeengine.cpp:837
#8  0x00007ff9d2420508 in createPixmapDataSync (this=0x7ff9d5d5a788, engine=0x7ff9d532f570, url=..., requestSize=..., options=...) at util/qdeclarativepixmapcache.cpp:802
#9  QDeclarativePixmap::load (this=0x7ff9d5d5a788, engine=0x7ff9d532f570, url=..., requestSize=..., options=...) at util/qdeclarativepixmapcache.cpp:1003
#10 0x00007ff9d24777fd in QDeclarativeImageBase::load (this=0x7ff9d5758d30) at graphicsitems/qdeclarativeimagebase.cpp:205
#11 0x00007ff9d260c3d6 in QDeclarativeImageBase::qt_metacall (this=0x7ff9d5758d30, _c=QMetaObject::WriteProperty, _id=1, _a=0x7fff4b562c60) at .moc/release-shared/moc_qdeclarativeimagebase_p.cpp:170
#12 0x00007ff9d260bce5 in QDeclarativeImage::qt_metacall (this=0x7ff9d5758d30, _c=QMetaObject::WriteProperty, _id=<value optimized out>, _a=0x7fff4b562c60) at .moc/release-shared/moc_qdeclarativeimage_p.cpp:94
#13 0x00007ff9d250cff9 in QDeclarativePropertyPrivate::write (object=0x7ff9d5758d30, property=<value optimized out>, value=<value optimized out>, context=0x7ff9d5369fd0, flags=...) at qml/qdeclarativeproperty.cpp:1139
#14 0x00007ff9d250d7d1 in QDeclarativePropertyPrivate::writeValueProperty (this=0x7ff9d53cee80, value=..., flags=...) at qml/qdeclarativeproperty.cpp:1085
#15 0x00007ff9d250d90a in QDeclarativePropertyPrivate::write (that=..., value=..., flags=...) at qml/qdeclarativeproperty.cpp:1340
#16 0x00007ff9d250650b in QDeclarativeBinding::update (this=0x7ff9d53c09b0, flags=...) at qml/qdeclarativebinding.cpp:422
#17 0x00007ff9d2504beb in update (this=<value optimized out>) at ../../include/QtDeclarative/private/../../../src/declarative/qml/qdeclarativebinding_p.h:177
#18 QDeclarativeBindingPrivate::emitValueChanged (this=<value optimized out>) at qml/qdeclarativebinding.cpp:464
#19 0x00007ff9d2503763 in _q_notify (this=0x7ff9d53c09b0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>) at qml/qdeclarativeexpression.cpp:800
#20 QDeclarativeExpression::qt_metacall (this=0x7ff9d53c09b0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>) at .moc/release-shared/moc_qdeclarativeexpression.cpp:77
#21 0x00007ff9d261d2d0 in QDeclarativeBinding::qt_metacall (this=0x7ff9d53c09b0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>) at .moc/release-shared/moc_qdeclarativebinding_p.cpp:69
#22 0x00007ff9cee2d8df in QMetaObject::activate (sender=0x7ff9d5349ec0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3278
#23 0x00007ff9d24d02a8 in QDeclarativeListViewPrivate::updateCurrent (this=0x7ff9d604c2d0, modelIndex=0) at graphicsitems/qdeclarativelistview.cpp:1181
#24 0x00007ff9d261aeb4 in QDeclarativeListView::qt_metacall (this=0x7ff9d5349ec0, _c=QMetaObject::WriteProperty, _id=2, _a=0x7fff4b5634c0) at .moc/release-shared/moc_qdeclarativelistview_p.cpp:531
#25 0x00007ff9d24eb80f in QDeclarativeVMEMetaObject::metaCall (this=0x7ff9d510bc10, c=QMetaObject::WriteProperty, _id=69, a=0x7fff4b5634c0) at qml/qdeclarativevmemetaobject.cpp:673
#26 0x00007ff9cee1eec6 in QMetaProperty::write (this=0x7fff4b563530, object=0x7ff9d5349ec0, value=<value optimized out>) at kernel/qmetaobject.cpp:2312
#27 0x00007ff9cee30baf in QObject::setProperty (this=0x7ff9d5349ec0, name=0x7ff9d3c52ba5 "currentIndex", value=...) at kernel/qobject.cpp:3434
#28 0x00007ff9d3c26129 in KWin::TabBox::DeclarativeView::setCurrentIndex (this=0x7ff9d5f7f610, index=...) at /var/tmp/portage/kde-base/kwin-4.8.0/work/kwin-4.8.0/kwin/tabbox/declarative.cpp:180
#29 0x00007ff9d3c2e780 in KWin::TabBox::TabBoxHandler::setCurrentIndex (this=0x7ff9d515a440, index=...) at /var/tmp/portage/kde-base/kwin-4.8.0/work/kwin-4.8.0/kwin/tabbox/tabboxhandler.cpp:544
#30 0x00007ff9d3c1e894 in KWin::TabBox::TabBox::setCurrentIndex (this=0x7ff9d500ae10, index=<value optimized out>, notifyEffects=true) at /var/tmp/portage/kde-base/kwin-4.8.0/work/kwin-4.8.0/kwin/tabbox/tabbox.cpp:496
#31 0x00007ff9d3c1e92f in KWin::TabBox::TabBox::setCurrentDesktop (this=0x7ff9d500ae10, newDesktop=<value optimized out>) at /var/tmp/portage/kde-base/kwin-4.8.0/work/kwin-4.8.0/kwin/tabbox/tabbox.cpp:489
#32 0x00007ff9d3c1ebc5 in KWin::TabBox::TabBox::reset (this=0x7ff9d500ae10, partial_reset=false) at /var/tmp/portage/kde-base/kwin-4.8.0/work/kwin-4.8.0/kwin/tabbox/tabbox.cpp:406
#33 0x00007ff9d3c20f42 in KWin::TabBox::TabBox::startWalkThroughDesktops (this=0x7ff9d500ae10, mode=KWin::TabBoxDesktopMode) at /var/tmp/portage/kde-base/kwin-4.8.0/work/kwin-4.8.0/kwin/tabbox/tabbox.cpp:934
#34 0x00007ff9d3c21291 in KWin::TabBox::TabBox::slotWalkThroughDesktops (this=0x7ff9d500ae10) at /var/tmp/portage/kde-base/kwin-4.8.0/work/kwin-4.8.0/kwin/tabbox/tabbox.cpp:804
#35 0x00007ff9d3c21778 in KWin::TabBox::TabBox::qt_metacall (this=0x7ff9d500ae10, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff4b563890) at /var/tmp/portage/kde-base/kwin-4.8.0/work/kwin-4.8.0_build/kwin/tabbox.moc:124
#36 0x00007ff9cee2d8df in QMetaObject::activate (sender=0x7ff9d5256920, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff4b563890) at kernel/qobject.cpp:3278
#37 0x00007ff9cdea8fb2 in QAction::triggered (this=<value optimized out>, _t1=false) at .moc/release-shared/moc_qaction.cpp:263
#38 0x00007ff9cdea9293 in QAction::activate (this=0x7ff9d5256920, event=<value optimized out>) at kernel/qaction.cpp:1257
#39 0x00007ff9d337e198 in trigger (this=<value optimized out>, componentUnique=<value optimized out>, actionUnique=<value optimized out>, timestamp=640856966) at /usr/include/qt4/QtGui/qaction.h:218
#40 KGlobalAccelPrivate::_k_invokeAction (this=<value optimized out>, componentUnique=<value optimized out>, actionUnique=<value optimized out>, timestamp=640856966) at /var/tmp/portage/kde-base/kdelibs-4.8.0/work/kdelibs-4.8.0/kdeui/shortcuts/kglobalaccel.cpp:449
#41 0x00007ff9d3380c53 in KGlobalAccel::qt_metacall (this=0x7ff9d5062aa0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff4b563ab0) at /var/tmp/portage/kde-base/kdelibs-4.8.0/work/kdelibs-4.8.0_build/kdeui/kglobalaccel.moc:77
#42 0x00007ff9cee2d8df in QMetaObject::activate (sender=0x7ff9d5054960, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff4b563ab0) at kernel/qobject.cpp:3278
#43 0x00007ff9d34bbbb9 in OrgKdeKglobalaccelComponentInterface::globalShortcutPressed (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>, _t3=640856966) at /var/tmp/portage/kde-base/kdelibs-4.8.0/work/kdelibs-4.8.0_build/kdeui/kglobalaccel_component_interface.moc:150
#44 0x00007ff9d34bbfea in OrgKdeKglobalaccelComponentInterface::qt_metacall (this=0x7ff9d5054960, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fff4b563f00) at /var/tmp/portage/kde-base/kdelibs-4.8.0/work/kdelibs-4.8.0_build/kdeui/kglobalaccel_component_interface.moc:98
#45 0x00007ff9cf185747 in QDBusConnectionPrivate::deliverCall (this=0x7ff9d4eb2870, object=0x7ff9d5054960, msg=..., metaTypes=<value optimized out>, slotIdx=5) at qdbusintegrator.cpp:942
#46 0x00007ff9cf190bef in QDBusCallDeliveryEvent::placeMetaCall (this=<value optimized out>, object=<value optimized out>) at qdbusintegrator_p.h:103
#47 0x00007ff9cee2d39a in QObject::event (this=0x7ff9d5054960, e=<value optimized out>) at kernel/qobject.cpp:1217
#48 0x00007ff9cdeb1334 in QApplicationPrivate::notify_helper (this=0x7ff9d4ebf9b0, receiver=0x7ff9d5054960, e=0x7ff9d61a7b80) at kernel/qapplication.cpp:4481
#49 0x00007ff9cdeb63ba in QApplication::notify (this=<value optimized out>, receiver=0x7ff9d5054960, e=0x7ff9d61a7b80) at kernel/qapplication.cpp:4360
#50 0x00007ff9d3329b76 in KApplication::notify (this=0x7fff4b564b40, receiver=0x7ff9d5054960, event=0x7ff9d61a7b80) at /var/tmp/portage/kde-base/kdelibs-4.8.0/work/kdelibs-4.8.0/kdeui/kernel/kapplication.cpp:311
#51 0x00007ff9cee14f0c in QCoreApplication::notifyInternal (this=0x7fff4b564b40, receiver=0x7ff9d5054960, event=0x7ff9d61a7b80) at kernel/qcoreapplication.cpp:787
#52 0x00007ff9cee190ad in sendEvent (receiver=0x0, event_type=0, data=0x7ff9d4e73470) at kernel/qcoreapplication.h:215
#53 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x7ff9d4e73470) at kernel/qcoreapplication.cpp:1428
#54 0x00007ff9cdf71f9d in sendPostedEvents (this=0x7ff9d4ebf940, flags=...) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#55 QEventDispatcherX11::processEvents (this=0x7ff9d4ebf940, flags=...) at kernel/qeventdispatcher_x11.cpp:75
#56 0x00007ff9cee13d42 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#57 0x00007ff9cee140bc in QEventLoop::exec (this=0x7fff4b564a30, flags=...) at kernel/qeventloop.cpp:201
#58 0x00007ff9cee1939b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#59 0x00007ff9d3b805b5 in kdemain (argc=<value optimized out>, argv=0x7fff4b564ba0) at /var/tmp/portage/kde-base/kwin-4.8.0/work/kwin-4.8.0/kwin/main.cpp:541
#60 0x00007ff9d37ccebd in __libc_start_main (main=0x7ff9d40a7a10 <main(int, char**)>, argc=2, ubp_av=0x7fff4b565268, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff4b565258) at libc-start.c:240
#61 0x00007ff9d40a78f9 in _start ()

This bug may be a duplicate of or related to bug 285747.

Possible duplicates by query: bug 285747.

Reported using DrKonqi