Application: kwin (4.7.4 (4.7.4))
KDE Platform Version: 4.7.4 (4.7.4)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-15-generic x86_64
Distribution: Ubuntu 11.10

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

Using the desktop as usual. There was a bigger IO and CPU load because of my work, but nothing else.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f83516147a0 (LWP 3325))]

Thread 4 (Thread 0x7f83393b5700 (LWP 3326)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f8350df09df in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f8350deed71 in __GI___libc_free (mem=0x7f835110c1c0) at malloc.c:3736
#3  0x00007f834d29739b in cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:62
#4  ~QScopedPointer (this=0x27cca98, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:100
#5  QObject::~QObject (this=0x27cca90, __in_chrg=<optimized out>) at kernel/qobject.cpp:818
#6  0x00007f834d2abe39 in QEventDispatcherUNIX::~QEventDispatcherUNIX (this=0x27cca90, __in_chrg=<optimized out>) at kernel/qeventdispatcher_unix.cpp:626
#7  0x00007f834d197e34 in QThreadPrivate::finish (arg=0x7f834d5b3580) at thread/qthread_unix.cpp:367
#8  0x00007f834d198d0d in ~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at /usr/include/pthread.h:545
#9  ~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at thread/qthread_unix.cpp:824
#10 QThreadPrivate::start (arg=0x7f834d5b3580) at thread/qthread_unix.cpp:290
#11 0x00007f83471baefc in start_thread (arg=0x7f83393b5700) at pthread_create.c:304
#12 0x00007f8350e5389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f8332a19700 (LWP 3331)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f8350df09df in _L_lock_10501 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f8350deed71 in __GI___libc_free (mem=0x7f835110c1c0) at malloc.c:3736
#3  0x00007f834d2ac06c in QEventDispatcherUNIX::unregisterSocketNotifier (this=<optimized out>, notifier=<optimized out>) at kernel/qeventdispatcher_unix.cpp:801
#4  0x00007f834d2ad730 in QEventDispatcherUNIXPrivate::doSelect (this=0x2b03030, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:261
#5  0x00007f834d2ad833 in QEventDispatcherUNIX::processEvents (this=0x27b8730, flags=...) at kernel/qeventdispatcher_unix.cpp:918
#6  0x00007f834d27ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f834d27eef7 in QEventLoop::exec (this=0x7f8332a18db0, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007f834d19627f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007f834d261cbf in QInotifyFileSystemWatcherEngine::run (this=0x2b01f30) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f834d198d05 in QThreadPrivate::start (arg=0x2b01f30) at thread/qthread_unix.cpp:331
#11 0x00007f83471baefc in start_thread (arg=0x7f8332a19700) at pthread_create.c:304
#12 0x00007f8350e5389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f83321e8700 (LWP 3332)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f834fcabfe2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f834fcac019 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f83471baefc in start_thread (arg=0x7f83321e8700) at pthread_create.c:304
#4  0x00007f8350e5389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f83516147a0 (LWP 3325)):
[KCrash Handler]
#6  0x00007f8350dec3f6 in _int_malloc (av=0x7f835110c1c0, bytes=1200) at malloc.c:4636
#7  0x00007f8350dee77d in __GI___libc_malloc (bytes=1200) at malloc.c:3660
#8  0x00007f834c6ec1db in QImageData::create (size=<optimized out>, format=QImage::Format_RGB32, numColors=0) at image/qimage.cpp:247
#9  0x00007f834c6ed36b in QImage::QImage (this=0x7fffe5987c40, width=1, height=300, format=QImage::Format_RGB32) at image/qimage.cpp:849
#10 0x00007f834c7141b5 in QRasterPixmapData::resize (this=0x310e160, width=1, height=300) at image/qpixmap_raster.cpp:120
#11 0x00007f834c70c9ee in QPixmapData::create (w=1, h=300, type=<optimized out>) at image/qpixmapdata.cpp:63
#12 0x00007f834c70504f in QPixmap::init (this=0x3216730, w=<optimized out>, h=<optimized out>, type=<optimized out>) at image/qpixmap.cpp:118
#13 0x00007f834c70635d in QPixmap::QPixmap (this=0x3216730, w=1, h=300) at image/qpixmap.cpp:172
#14 0x00007f833d92fead in Oxygen::Helper::verticalGradient (this=0x278e3a0, color=..., height=300, offset=0) at ../../../libs/oxygen/oxygenhelper.cpp:484
#15 0x00007f833d92c516 in Oxygen::Helper::renderWindowBackground (this=0x278e3a0, p=0x7fffe59880b0, clipRect=..., widget=<optimized out>, window=<optimized out>, color=..., yShift=40, gradientHeight=64) at ../../../libs/oxygen/oxygenhelper.cpp:172
#16 0x00007f833899a5f5 in ?? () from /usr/lib/kde4/kwin3_oxygen.so
#17 0x00007f833899d75e in ?? () from /usr/lib/kde4/kwin3_oxygen.so
#18 0x00007f834f4d282f in eventFilter (e=0x7fffe59885c0, this=0x2d58560, o=<optimized out>) at ../../../kwin/libkdecorations/kcommondecoration.cpp:877
#19 KCommonDecoration::eventFilter (this=0x2d58560, o=0x2d59740, e=0x7fffe59885c0) at ../../../kwin/libkdecorations/kcommondecoration.cpp:868
#20 0x00007f8338995620 in ?? () from /usr/lib/kde4/kwin3_oxygen.so
#21 0x00007f834d27fc88 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x2d59740, event=0x7fffe59885c0) at kernel/qcoreapplication.cpp:902
#22 0x00007f834c62f43f in notify_helper (e=0x7fffe59885c0, receiver=0x2d59740, this=0x263d310) at kernel/qapplication.cpp:4482
#23 QApplicationPrivate::notify_helper (this=0x263d310, receiver=0x2d59740, e=0x7fffe59885c0) at kernel/qapplication.cpp:4458
#24 0x00007f834c6342e1 in QApplication::notify (this=0x7fffe598d780, receiver=0x2d59740, e=0x7fffe59885c0) at kernel/qapplication.cpp:4365
#25 0x00007f8350941466 in KApplication::notify (this=0x7fffe598d780, receiver=0x2d59740, event=0x7fffe59885c0) at ../../kdeui/kernel/kapplication.cpp:311
#26 0x00007f834d27fafc in QCoreApplication::notifyInternal (this=0x7fffe598d780, receiver=0x2d59740, event=0x7fffe59885c0) at kernel/qcoreapplication.cpp:787
#27 0x00007f834c67cbd4 in sendSpontaneousEvent (event=0x7fffe59885c0, receiver=0x2d59740) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#28 QWidgetPrivate::drawWidget (this=0x2d59770, pdev=0x2d6ed38, rgn=..., offset=..., flags=14, sharedPainter=0x0, backingStore=0x0) at kernel/qwidget.cpp:5528
#29 0x00007f834c67dde5 in QWidgetPrivate::render (this=0x2d59770, target=0x2d6ed38, targetOffset=..., sourceRegion=<optimized out>, renderFlags=..., readyToRender=<optimized out>) at kernel/qwidget.cpp:5664
#30 0x00007f834c67e059 in QWidget::render (this=<optimized out>, target=<optimized out>, targetOffset=<optimized out>, sourceRegion=<optimized out>, renderFlags=<optimized out>) at kernel/qwidget.cpp:5127
#31 0x00007f83511fbfe5 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#32 0x00007f8351156e1a in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#33 0x00007f83511e8ed0 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#34 0x00007f83511e969c in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#35 0x00007f83511d37a9 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#36 0x00007f83511f2d83 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#37 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#38 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#39 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#40 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#41 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#42 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#43 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#44 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#45 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#46 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#47 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#48 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#49 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#50 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#51 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#52 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#53 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#54 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#55 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#56 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#57 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#58 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#59 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#60 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#61 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#62 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#63 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#64 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#65 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#66 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#67 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#68 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#69 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#70 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#71 0x00007f834f2a29ab in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#72 0x00007f83511f2df8 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#73 0x00007f83511d307b in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#74 0x00007f83511f2bf3 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#75 0x00007f834f2a2aab in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#76 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#77 0x00007f8338595acb in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#78 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#79 0x00007f8338553342 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#80 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#81 0x00007f8338565da2 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#82 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#83 0x00007f833854bb96 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#84 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#85 0x00007f833854ef25 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#86 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#87 0x00007f83385859c1 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#88 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#89 0x00007f83385c0ef6 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#90 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#91 0x00007f833858a747 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#92 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#93 0x00007f8338583e83 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#94 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#95 0x00007f8338584e82 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#96 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#97 0x00007f833859c761 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#98 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#99 0x00007f83385d1999 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#100 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#101 0x00007f8338563d64 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#102 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#103 0x00007f83385518c1 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#104 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#105 0x00007f834f2a2aab in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#106 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#107 0x00007f834f2a2aab in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#108 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#109 0x00007f833857c034 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#110 0x00007f83511f2c68 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#111 0x00007f83511d367e in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#112 0x00007f83511d61d7 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#113 0x00007f83511e43b1 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#114 0x00007f83511d3017 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#115 0x00007f83511f2a97 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#116 0x00007f83385c8cd6 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#117 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#118 0x00007f8338595e1d in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#119 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#120 0x00007f8338551f89 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#121 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#122 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#123 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#124 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#125 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#126 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#127 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#128 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#129 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#130 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#131 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#132 0x00007f833858aeb7 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#133 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#134 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#135 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#136 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#137 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#138 0x00007f833859f935 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#139 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#140 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#141 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#142 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#143 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#144 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#145 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#146 0x00007f83385c4e21 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#147 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#148 0x00007f83385cb58d in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#149 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#150 0x00007f834f2a2b18 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () from /usr/lib/libkwineffects.so.1abi2
#151 0x00007f83511f2af6 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#152 0x00007f83511d5a06 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#153 0x00007f83511ecc82 in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#154 0x00007f83511cffbd in ?? () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#155 0x00007f834d296789 in QObject::event (this=0x27ccab0, e=<optimized out>) at kernel/qobject.cpp:1181
#156 0x00007f834c62f474 in notify_helper (e=0x7fffe598d360, receiver=0x27ccab0, this=0x263d310) at kernel/qapplication.cpp:4486
#157 QApplicationPrivate::notify_helper (this=0x263d310, receiver=0x27ccab0, e=0x7fffe598d360) at kernel/qapplication.cpp:4458
#158 0x00007f834c6342e1 in QApplication::notify (this=0x7fffe598d780, receiver=0x27ccab0, e=0x7fffe598d360) at kernel/qapplication.cpp:4365
#159 0x00007f8350941466 in KApplication::notify (this=0x7fffe598d780, receiver=0x27ccab0, event=0x7fffe598d360) at ../../kdeui/kernel/kapplication.cpp:311
#160 0x00007f834d27fafc in QCoreApplication::notifyInternal (this=0x7fffe598d780, receiver=0x27ccab0, event=0x7fffe598d360) at kernel/qcoreapplication.cpp:787
#161 0x00007f834d2acd62 in sendEvent (event=0x7fffe598d360, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#162 QTimerInfoList::activateTimers (this=0x263ded0) at kernel/qeventdispatcher_unix.cpp:603
#163 0x00007f834d2ad844 in QEventDispatcherUNIX::processEvents (this=0x25faf40, flags=...) at kernel/qeventdispatcher_unix.cpp:922
#164 0x00007f834c6d7f78 in QEventDispatcherX11::processEvents (this=0x25faf40, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#165 0x00007f834d27ecf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#166 0x00007f834d27eef7 in QEventLoop::exec (this=0x7fffe598d6c0, flags=...) at kernel/qeventloop.cpp:201
#167 0x00007f834d283789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#168 0x00007f835116ccf6 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_kwin.so
#169 0x00007f8350d9330d in __libc_start_main (main=0x400630, argc=3, ubp_av=0x7fffe598dde8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe598ddd8) at libc-start.c:226
#170 0x0000000000400661 in _start ()

Reported using DrKonqi