-- Backtrace:
Application: KWin (kwin), signal: Aborted
[Current thread is 1 (Thread 0x7f4a644bf760 (LWP 28806))]

Thread 2 (Thread 0x7f4a3e454710 (LWP 28809)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f4a63aaec61 in QTWTF::TCMalloc_PageHeap::scavengerThread
(this=0x7f4a63e4b2c0) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f4a63aae2a2 in QTWTF::TCMalloc_PageHeap::runScavengerThread
(context=0x7f4a63e4b2c0) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f4a61424aca in start_thread (arg=<value optimized out>) at
pthread_create.c:297
#4  0x00007f4a5d4a258d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f4a644bf760 (LWP 28806)):
[KCrash Handler]
#6  0x00007f4a5d3f4315 in *__GI_raise (sig=<value optimized out>) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#7  0x00007f4a5d3f599f in *__GI_abort () at abort.c:92
#8  0x00007f4a616c7433 in qt_message_output (msgType=QtFatalMsg,
    buf=0x1e56af8 "ASSERT: \"(pos == end && glyphPosition ==
current.num_glyphs) || logClusters[pos] == glyphPosition\" in file
text/qtextlayout.cpp, line 1823") at global/qglobal.cpp:2291
#9  0x00007f4a616c7612 in qt_message (msgType=QtFatalMsg, msg=0x7f4a61896a18
"ASSERT: \"%s\" in file %s, line %d", ap=0x7fff85b25670) at
global/qglobal.cpp:2337
#10 0x00007f4a616c7e7f in qFatal (msg=0x7f4a61896a18 "ASSERT: \"%s\" in file
%s, line %d") at global/qglobal.cpp:2520
#11 0x00007f4a616c6f9b in qt_assert (assertion=0x7f4a60f05848 "(pos == end &&
glyphPosition == current.num_glyphs) || logClusters[pos] == glyphPosition",
file=0x7f4a60f057e7 "text/qtextlayout.cpp",
    line=1823) at global/qglobal.cpp:2036
#12 0x00007f4a6090cb52 in addNextCluster (pos=@0x7fff85b25888, end=67,
line=..., glyphCount=@0x7fff85b25880, current=..., logClusters=0x7fff85b25d18,
glyphs=...) at text/qtextlayout.cpp:1823
#13 0x00007f4a6090d7a6 in QTextLine::layout_helper (this=0x7fff85b285c0,
maxGlyphs=2147483647) at text/qtextlayout.cpp:1960
#14 0x00007f4a6090c29a in QTextLine::setLineWidth (this=0x7fff85b285c0,
width=8388607) at text/qtextlayout.cpp:1649
#15 0x00007f4a607a8ed7 in qt_format_text (fnt=..., _r=..., tf=134234257,
option=0x0, str=..., brect=0x7fff85b289a0, tabstops=0, tabarraylen=0,
painter=0x0) at painting/qpainter.cpp:8063
#16 0x00007f4a607a80ed in qt_format_text (fnt=..., _r=..., tf=16513, str=...,
brect=0x7fff85b289a0, tabstops=0, ta=0x0, tabarraylen=0, painter=0x0) at
painting/qpainter.cpp:7903
#17 0x00007f4a608d03b4 in QFontMetrics::boundingRect (this=0x7fff85b28a60,
rect=..., flags=129, text=..., tabStops=0, tabArray=0x0) at
text/qfontmetrics.cpp:798
#18 0x00007f4a3e741f0d in Oxygen::Client::titleBoundingRect (this=0x1d18290,
font=<value optimized out>, rect=..., caption=...)
    at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/kwin/clients/oxygen/oxygenclient.cpp:421
#19 0x00007f4a3e73ea0c in Oxygen::Client::renderItem (this=0x1d18290,
painter=<value optimized out>, index=0, palette=<value optimized out>)
    at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/kwin/clients/oxygen/oxygenclient.cpp:981
#20 0x00007f4a3e741c98 in Oxygen::Client::paintEvent (this=0x1d18290,
event=<value optimized out>) at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/kwin/clients/oxygen/oxygenclient.cpp:1475
#21 0x00007f4a62e84c7b in KCommonDecoration::eventFilter (this=0x1d18290,
o=0x1d2b510, e=0x7fff85b29720)
    at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/kwin/libkdecorations/kcommondecoration.cpp:877
#22 0x00007f4a3e73d9e6 in Oxygen::Client::eventFilter (this=0x1d18290,
object=0x1d2b510, event=0x7fff85b29720)
    at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/kwin/clients/oxygen/oxygenclient.cpp:1352
#23 0x00007f4a61808463 in
QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x189f080,
receiver=0x1d2b510, event=0x7fff85b29720) at kernel/qcoreapplication.cpp:902
#24 0x00007f4a605d6573 in QApplicationPrivate::notify_helper (this=0x189f080,
receiver=0x1d2b510, e=0x7fff85b29720) at kernel/qapplication.cpp:4477
#25 0x00007f4a605d63ee in QApplication::notify (this=0x7fff85b2af90,
receiver=0x1d2b510, e=0x7fff85b29720) at kernel/qapplication.cpp:4446
#26 0x00007f4a6259d3e1 in KApplication::notify (this=0x7fff85b2af90,
receiver=0x1d2b510, event=0x7fff85b29720) at
/usr/src/packages/kde4/4.7.2/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#27 0x00007f4a6180814c in QCoreApplication::notifyInternal
(this=0x7fff85b2af90, receiver=0x1d2b510, event=0x7fff85b29720) at
kernel/qcoreapplication.cpp:787
#28 0x00007f4a605d8ec3 in QCoreApplication::sendSpontaneousEvent
(receiver=0x1d2b510, event=0x7fff85b29720) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#29 0x00007f4a606444b5 in QWidgetPrivate::drawWidget (this=0x1d2b540,
pdev=0x1d2ebf8, rgn=..., offset=..., flags=14, sharedPainter=0x0,
backingStore=0x0) at kernel/qwidget.cpp:5528
#30 0x00007f4a60645018 in QWidgetPrivate::render (this=0x1d2b540,
target=0x1d2ebf8, targetOffset=..., sourceRegion=..., renderFlags=...,
readyToRender=false) at kernel/qwidget.cpp:5664
#31 0x00007f4a60642604 in QWidget::render (this=0x1d2b510, target=0x1d2ebf8,
targetOffset=..., sourceRegion=..., renderFlags=...) at kernel/qwidget.cpp:5127
#32 0x00007f4a641b02d6 in KWin::PaintRedirector::performPendingPaint
(this=0x1d2ebd0) at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/kwin/paintredirector.cpp:56
#33 0x00007f4a6410c44f in KWin::Client::ensureDecorationPixmapsPainted
(this=0x1d159b0) at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/kwin/client.cpp:529
#34 0x00007f4a6410cba8 in KWin::Client::repaintDecorationPending
(this=0x1d159b0) at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/kwin/client.cpp:509
#35 0x00007f4a6410cc7b in KWin::Client::qt_metacall (this=0x1d159b0,
_c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff85b29f60)
    at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/build/kwin/client.moc:144
#36 0x00007f4a61810ae5 in QMetaObject::metacall (object=0x1d159b0,
cl=QMetaObject::InvokeMetaMethod, idx=33, argv=0x7fff85b29f60) at
kernel/qmetaobject.cpp:237
#37 0x00007f4a61827ffc in QMetaObject::activate (sender=0x1d2ebd0,
m=0x7f4a64418a80, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3278
#38 0x00007f4a641afc90 in KWin::PaintRedirector::qt_metacall (this=0x1d2ebd0,
_c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value
optimized out>)
    at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/build/kwin/paintredirector.moc:72
#39 0x00007f4a61810ae5 in QMetaObject::metacall (object=0x1d2ebd0,
cl=QMetaObject::InvokeMetaMethod, idx=4, argv=0x7fff85b2a090) at
kernel/qmetaobject.cpp:237
#40 0x00007f4a61827ffc in QMetaObject::activate (sender=0x1d2ec18,
m=0x7f4a61ba4600, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3278
#41 0x00007f4a61892fe9 in QTimer::timeout (this=0x1d2ec18) at
.moc/debug-shared/moc_qtimer.cpp:134
#42 0x00007f4a61831c13 in QTimer::timerEvent (this=0x1d2ec18, e=0x7fff85b2aa80)
at kernel/qtimer.cpp:271
#43 0x00007f4a618236b3 in QObject::event (this=0x1d2ec18, e=0x7fff85b2aa80) at
kernel/qobject.cpp:1181
#44 0x00007f4a605d659c in QApplicationPrivate::notify_helper (this=0x189f080,
receiver=0x1d2ec18, e=0x7fff85b2aa80) at kernel/qapplication.cpp:4481
#45 0x00007f4a605d3a80 in QApplication::notify (this=0x7fff85b2af90,
receiver=0x1d2ec18, e=0x7fff85b2aa80) at kernel/qapplication.cpp:3881
#46 0x00007f4a6259d3e1 in KApplication::notify (this=0x7fff85b2af90,
receiver=0x1d2ec18, event=0x7fff85b2aa80) at
/usr/src/packages/kde4/4.7.2/kdelibs-4.7.2/kdeui/kernel/kapplication.cpp:311
#47 0x00007f4a6180814c in QCoreApplication::notifyInternal
(this=0x7fff85b2af90, receiver=0x1d2ec18, event=0x7fff85b2aa80) at
kernel/qcoreapplication.cpp:787
#48 0x00007f4a6180c0d1 in QCoreApplication::sendEvent (receiver=0x1d2ec18,
event=0x7fff85b2aa80) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#49 0x00007f4a6184ae53 in QTimerInfoList::activateTimers (this=0x189fb00) at
kernel/qeventdispatcher_unix.cpp:603
#50 0x00007f4a6184bfdb in QEventDispatcherUNIX::activateTimers (this=0x1841500)
at kernel/qeventdispatcher_unix.cpp:860
#51 0x00007f4a6184c33b in QEventDispatcherUNIX::processEvents (this=0x1841500,
flags=...) at kernel/qeventdispatcher_unix.cpp:922
#52 0x00007f4a606c6995 in QEventDispatcherX11::processEvents (this=0x1841500,
flags=...) at kernel/qeventdispatcher_x11.cpp:152
#53 0x00007f4a61805164 in QEventLoop::processEvents (this=0x7fff85b2ae90,
flags=...) at kernel/qeventloop.cpp:149
#54 0x00007f4a618052b9 in QEventLoop::exec (this=0x7fff85b2ae90, flags=...) at
kernel/qeventloop.cpp:201
#55 0x00007f4a61808842 in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1064
#56 0x00007f4a605d35f2 in QApplication::exec () at kernel/qapplication.cpp:3755
#57 0x00007f4a6411f612 in kdemain (argc=<value optimized out>, argv=<value
optimized out>) at
/usr/src/packages/kde4/4.7.2/kde-workspace-4.7.2/kwin/main.cpp:517
#58 0x00007f4a5d3dfb6d in __libc_start_main (main=<value optimized out>,
argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized
out>, fini=<value optimized out>,
    rtld_fini=<value optimized out>, stack_end=0x7fff85b2b558) at
libc-start.c:226
#59 0x0000000000400809 in _start () at ../sysdeps/x86_64/elf/start.S:113