Application: kwin_x11 (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-25-generic x86_64
Distribution: Ubuntu 15.04

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

KWin crashes often when playing games. This time it was tried with TF2, but alkso happens in some other games.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff16d45e800 (LWP 29241))]

Thread 4 (Thread 0x7ff1551d2700 (LWP 29264)):
#0  0x00007ff16cf36743 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ff16b780101 in qt_safe_select (nfds=17, fdread=fdread@entry=0x7ff144000a78, fdwrite=fdwrite@entry=0x7ff144000d08, fdexcept=fdexcept@entry=0x7ff144000f98, orig_timeout=orig_timeout@entry=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007ff16b781cd2 in select (timeout=0x0, exceptfds=0x7ff144000f98, writefds=0x7ff144000d08, readfds=0x7ff144000a78, nfds=<optimized out>, this=0x7ff1440008c0) at kernel/qeventdispatcher_unix.cpp:320
#3  QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7ff1440008e0, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:196
#4  0x00007ff16b782275 in QEventDispatcherUNIX::processEvents (this=0x7ff1440008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5  0x00007ff16b7293e2 in QEventLoop::exec (this=this@entry=0x7ff1551d1da0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007ff16b4e8b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007ff16539bf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007ff16b4edb0e in QThreadPrivate::start (arg=0xbaceb0) at thread/qthread_unix.cpp:337
#9  0x00007ff1645686aa in start_thread (arg=0x7ff1551d2700) at pthread_create.c:333
#10 0x00007ff16cf3feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7ff143fff700 (LWP 29270)):
#0  0x00007ff16cf360b7 in ioctl () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ff1556e9919 in uki_firegl_MicroSleep () from /usr/lib/libatiuki.so.1
#2  0x00007ff14f6f1920 in ?? () from /usr/lib/dri/fglrx_dri.so
#3  0x00007ff14ee82d72 in ?? () from /usr/lib/dri/fglrx_dri.so
#4  0x00007ff14ee82dc5 in ?? () from /usr/lib/dri/fglrx_dri.so
#5  0x00007ff1645686aa in start_thread (arg=0x7ff143fff700) at pthread_create.c:333
#6  0x00007ff16cf3feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7ff141ffd700 (LWP 29280)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ff16a2f2644 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007ff16a2f2689 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007ff1645686aa in start_thread (arg=0x7ff141ffd700) at pthread_create.c:333
#4  0x00007ff16cf3feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7ff16d45e800 (LWP 29241)):
[KCrash Handler]
#6  0x00007ff14e56461f in ?? () from /usr/lib/dri/fglrx_dri.so
#7  0x00007ff14dc56049 in ?? () from /usr/lib/dri/fglrx_dri.so
#8  0x00007ff14dc562d2 in ?? () from /usr/lib/dri/fglrx_dri.so
#9  0x00007ff14e0839c3 in ?? () from /usr/lib/dri/fglrx_dri.so
#10 0x00007ff16a81c81e in KWin::BlurEffect::doCachedBlur (this=0x1156c70, w=0x7ff163936280 <glCopyTexSubImage2D>, region=..., opacity=4.38034998e+27) at ../../effects/blur/blur.cpp:591
#11 0x00007ff16a81d4e1 in KWin::BlurEffect::drawWindow (this=this@entry=0x1156c70, w=w@entry=0x11b2800, mask=mask@entry=10, region=..., data=...) at ../../effects/blur/blur.cpp:407
#12 0x00007ff16cb1f0d1 in KWin::EffectsHandlerImpl::drawWindow (this=0x10ddf00, w=w@entry=0x11b2800, mask=mask@entry=10, region=..., data=...) at ../effects.cpp:470
#13 0x00007ff16cae8841 in KWin::Scene::finalPaintWindow (this=<optimized out>, w=w@entry=0x11b2800, mask=mask@entry=10, region=..., data=...) at ../scene.cpp:605
#14 0x00007ff16cb1ef7a in KWin::EffectsHandlerImpl::paintWindow (this=0x10ddf00, w=w@entry=0x11b2800, mask=mask@entry=10, region=..., data=...) at ../effects.cpp:436
#15 0x00007ff16acf9651 in KWin::Effect::paintWindow (this=this@entry=0x9c2730, w=w@entry=0x11b2800, mask=mask@entry=10, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:550
#16 0x00007ff16cb1ef21 in KWin::EffectsHandlerImpl::paintWindow (this=0x10ddf00, w=w@entry=0x11b2800, mask=mask@entry=10, region=..., data=...) at ../effects.cpp:433
#17 0x00007ff16acf9651 in KWin::Effect::paintWindow (this=this@entry=0x1156c70, w=w@entry=0x11b2800, mask=mask@entry=10, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:550
#18 0x00007ff16cb1ef21 in KWin::EffectsHandlerImpl::paintWindow (this=0x10ddf00, w=0x11b2800, mask=mask@entry=10, region=..., data=...) at ../effects.cpp:433
#19 0x00007ff16caecee8 in KWin::Scene::paintWindow (this=this@entry=0x10c1c70, w=0x1287100, mask=10, region=..., quads=...) at ../scene.cpp:477
#20 0x00007ff16caeac0e in KWin::Scene::paintSimpleScreen (this=this@entry=0x10c1c70, orig_mask=orig_mask@entry=8, region=...) at ../scene.cpp:380
#21 0x00007ff16cafb513 in KWin::SceneOpenGL2::paintSimpleScreen (this=this@entry=0x10c1c70, mask=mask@entry=8, region=...) at ../scene_opengl.cpp:1005
#22 0x00007ff16cae8205 in KWin::Scene::finalPaintScreen (this=0x10c1c70, mask=mask@entry=8, region=..., data=...) at ../scene.cpp:199
#23 0x00007ff16cb1ecff in KWin::EffectsHandlerImpl::paintScreen (this=0x10ddf00, mask=mask@entry=8, region=..., data=...) at ../effects.cpp:393
#24 0x00007ff16acf957f in KWin::Effect::paintScreen (this=this@entry=0x9c2730, mask=mask@entry=8, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:535
#25 0x00007ff16cb1ecad in KWin::EffectsHandlerImpl::paintScreen (this=0x10ddf00, mask=mask@entry=8, region=..., data=...) at ../effects.cpp:390
#26 0x00007ff16acf957f in KWin::Effect::paintScreen (this=this@entry=0x1156c70, mask=mask@entry=8, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:535
#27 0x00007ff16cb1ecad in KWin::EffectsHandlerImpl::paintScreen (this=0x10ddf00, mask=8, region=..., data=...) at ../effects.cpp:390
#28 0x00007ff16cae7e6a in KWin::Scene::paintScreen (this=this@entry=0x10c1c70, mask=mask@entry=0x7ffcd185999c, damage=..., repaint=..., updateRegion=updateRegion@entry=0x7ffcd18599b0, validRegion=validRegion@entry=0x7ffcd18599c0) at ../scene.cpp:149
#29 0x00007ff16cb01da7 in KWin::SceneOpenGL::paint (this=0x10c1c70, damage=..., toplevels=...) at ../scene_opengl.cpp:651
#30 0x00007ff16cae1973 in KWin::Compositor::performCompositing (this=0x897fa0) at ../composite.cpp:658
#31 0x00007ff16b75d6f3 in QObject::event (this=0x897fa0, e=<optimized out>) at kernel/qobject.cpp:1267
#32 0x00007ff16c035b2c in QApplicationPrivate::notify_helper (this=0x810790, receiver=0x897fa0, e=0x7ffcd1859dd0) at kernel/qapplication.cpp:3720
#33 0x00007ff16c03b000 in QApplication::notify (this=0x7ffcd185a010, receiver=0x897fa0, e=0x7ffcd1859dd0) at kernel/qapplication.cpp:3503
#34 0x00007ff16b72bc2b in QCoreApplication::notifyInternal (this=0x7ffcd185a010, receiver=0x897fa0, event=event@entry=0x7ffcd1859dd0) at kernel/qcoreapplication.cpp:935
#35 0x00007ff16b783ae5 in sendEvent (event=0x7ffcd1859dd0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#36 QTimerInfoList::activateTimers (this=0x84a3e8) at kernel/qtimerinfo_unix.cpp:635
#37 0x00007ff16b7816a0 in QEventDispatcherUNIX::activateTimers (this=this@entry=0x845d90) at kernel/qeventdispatcher_unix.cpp:549
#38 0x00007ff16b782243 in QEventDispatcherUNIX::processEvents (this=0x845d90, flags=flags@entry=...) at kernel/qeventdispatcher_unix.cpp:611
#39 0x00007ff15954696d in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at eventdispatchers/qunixeventdispatcher.cpp:62
#40 0x00007ff16b7293e2 in QEventLoop::exec (this=this@entry=0x7ffcd1859f30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#41 0x00007ff16b73102c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#42 0x00007ff16ba7031c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#43 0x00007ff16c0317a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#44 0x00007ff16d2078c3 in kdemain (argc=1, argv=0x7ffcd185a168) at ../main_x11.cpp:294
#45 0x00007ff16ce59a40 in __libc_start_main (main=0x400790 <main(int, char**)>, argc=1, argv=0x7ffcd185a168, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcd185a158) at libc-start.c:289
#46 0x00000000004007c9 in _start ()

Reported using DrKonqi