Application: kwin_x11 (5.3.0)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-16-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:
Moving windows around suing the desktop grid effect causes crashes, but not all the time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2cf6753840 (LWP 1512))]

Thread 8 (Thread 0x7f2cd61e4700 (LWP 1526)):
#0  0x00007f2cf6226743 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2cf4818101 in qt_safe_select (nfds=15, fdread=fdread@entry=0x7f2cc8000a98, fdwrite=fdwrite@entry=0x7f2cc8000d28, fdexcept=fdexcept@entry=0x7f2cc8000fb8, orig_timeout=orig_timeout@entry=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007f2cf4819cd2 in select (timeout=0x0, exceptfds=0x7f2cc8000fb8, writefds=0x7f2cc8000d28, readfds=0x7f2cc8000a98, nfds=<optimized out>, this=0x7f2cc80008e0) at kernel/qeventdispatcher_unix.cpp:320
#3  QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f2cc8000900, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:196
#4  0x00007f2cf481a275 in QEventDispatcherUNIX::processEvents (this=0x7f2cc80008e0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5  0x00007f2cf47c13e2 in QEventLoop::exec (this=this@entry=0x7f2cd61e3d60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2cf4580b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2cee3e3f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f2cf4585b0e in QThreadPrivate::start (arg=0x2708360) at thread/qthread_unix.cpp:337
#9  0x00007f2cf5aa56aa in start_thread (arg=0x7f2cd61e4700) at pthread_create.c:333
#10 0x00007f2cf622feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f2cc6b13700 (LWP 1537)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2cf3389644 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f2cf3389689 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f2cf5aa56aa in start_thread (arg=0x7f2cc6b13700) at pthread_create.c:333
#4  0x00007f2cf622feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f2cc7fff700 (LWP 2255)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2cf4586c6b in wait (time=18446744073709551615, this=0x38bf220) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x39494b0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f2cf3610fab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f2cf36113a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f2cf4585b0e in QThreadPrivate::start (arg=0x3949430) at thread/qthread_unix.cpp:337
#6  0x00007f2cf5aa56aa in start_thread (arg=0x7f2cc7fff700) at pthread_create.c:333
#7  0x00007f2cf622feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f2cd6dc3700 (LWP 2387)):
#0  0x00007f2cf6226743 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2cf4818101 in qt_safe_select (nfds=26, fdread=fdread@entry=0x7f2cd00ab448, fdwrite=fdwrite@entry=0x7f2cd00ab6d8, fdexcept=fdexcept@entry=0x7f2cd00ab968, orig_timeout=orig_timeout@entry=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007f2cf4819cd2 in select (timeout=0x0, exceptfds=0x7f2cd00ab968, writefds=0x7f2cd00ab6d8, readfds=0x7f2cd00ab448, nfds=<optimized out>, this=0x7f2cd0001ad0) at kernel/qeventdispatcher_unix.cpp:320
#3  QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f2cd00ab2b0, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:196
#4  0x00007f2cf481a275 in QEventDispatcherUNIX::processEvents (this=0x7f2cd0001ad0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5  0x00007f2cf47c13e2 in QEventLoop::exec (this=this@entry=0x7f2cd6dc2d60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2cf4580b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2cee3e3f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f2cf4585b0e in QThreadPrivate::start (arg=0x2d6dc00) at thread/qthread_unix.cpp:337
#9  0x00007f2cf5aa56aa in start_thread (arg=0x7f2cd6dc3700) at pthread_create.c:333
#10 0x00007f2cf622feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f2cd4af3700 (LWP 2388)):
#0  0x00007f2cf6226743 in select () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2cf4818101 in qt_safe_select (nfds=29, fdread=fdread@entry=0x7f2ccc0477a8, fdwrite=fdwrite@entry=0x7f2ccc047a38, fdexcept=fdexcept@entry=0x7f2ccc047cc8, orig_timeout=orig_timeout@entry=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007f2cf4819cd2 in select (timeout=0x0, exceptfds=0x7f2ccc047cc8, writefds=0x7f2ccc047a38, readfds=0x7f2ccc0477a8, nfds=<optimized out>, this=0x7f2ccc16d5e0) at kernel/qeventdispatcher_unix.cpp:320
#3  QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f2ccc047610, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:196
#4  0x00007f2cf481a275 in QEventDispatcherUNIX::processEvents (this=0x7f2ccc16d5e0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5  0x00007f2cf47c13e2 in QEventLoop::exec (this=this@entry=0x7f2cd4af2d60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f2cf4580b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f2cee3e3f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f2cf4585b0e in QThreadPrivate::start (arg=0x3caac90) at thread/qthread_unix.cpp:337
#9  0x00007f2cf5aa56aa in start_thread (arg=0x7f2cd4af3700) at pthread_create.c:333
#10 0x00007f2cf622feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f2c337ff700 (LWP 2390)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2cf4586c6b in wait (time=18446744073709551615, this=0x40239a0) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x3832b50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f2cf3610fab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f2cf36113a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f2cf4585b0e in QThreadPrivate::start (arg=0x3832ad0) at thread/qthread_unix.cpp:337
#6  0x00007f2cf5aa56aa in start_thread (arg=0x7f2c337ff700) at pthread_create.c:333
#7  0x00007f2cf622feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2c38aa6700 (LWP 2391)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2cf4586c6b in wait (time=18446744073709551615, this=0x3326a20) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x2acedf0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f2cf3610fab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f2cf36113a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f2cf4585b0e in QThreadPrivate::start (arg=0x2aced70) at thread/qthread_unix.cpp:337
#6  0x00007f2cf5aa56aa in start_thread (arg=0x7f2c38aa6700) at pthread_create.c:333
#7  0x00007f2cf622feed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2cf6753840 (LWP 1512)):
[KCrash Handler]
#6  0x00007f2cf615e267 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#7  0x00007f2cf615feca in __GI_abort () at abort.c:89
#8  0x00007f2cf4572edf in qt_message_fatal (context=..., message=...) at global/qlogging.cpp:1415
#9  QMessageLogger::fatal (this=this@entry=0x7fff69bd8b60, msg=msg@entry=0x7f2cf3da7c28 "Splitting quads is allowed only in pre-paint calls!") at global/qlogging.cpp:636
#10 0x00007f2cf3d95031 in KWin::WindowQuad::makeSubQuad (this=this@entry=0x2e44a10, x1=x1@entry=0, y1=y1@entry=0, x2=x2@entry=81.326321936643808, y2=y2@entry=37.826321936644206) at ../../libkwineffects/kwineffects.cpp:908
#11 0x00007f2cf5dd8519 in KWin::SceneOpenGL::Window::beginRenderWindow (this=<optimized out>, mask=<optimized out>, region=..., data=...) at ../scene_opengl.cpp:1270
#12 0x00007f2cf5dd8b97 in KWin::SceneOpenGL2Window::performPaint (this=this@entry=0x3ac8380, mask=mask@entry=86, region=..., data=...) at ../scene_opengl.cpp:1442
#13 0x00007f2cf5dde7a2 in KWin::SceneOpenGL2::performPaintWindow (this=this@entry=0x2618840, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../scene_opengl.cpp:1092
#14 0x00007f2cf5dde978 in KWin::SceneOpenGL2::finalDrawWindow (this=0x2618840, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../scene_opengl.cpp:1078
#15 0x00007f2cf5df8359 in KWin::EffectsHandlerImpl::drawWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:477
#16 0x00007f2cf393e0b5 in KWin::ContrastEffect::drawWindow (this=this@entry=0x26e70e0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../../effects/backgroundcontrast/contrast.cpp:345
#17 0x00007f2cf5df82f1 in KWin::EffectsHandlerImpl::drawWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:474
#18 0x00007f2cf38b42fb in KWin::BlurEffect::drawWindow (this=this@entry=0x26245b0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../../effects/blur/blur.cpp:415
#19 0x00007f2cf5df82f1 in KWin::EffectsHandlerImpl::drawWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:474
#20 0x00007f2cf3d918b1 in KWin::Effect::drawWindow (this=this@entry=0x24c3d00, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:580
#21 0x00007f2cf5df82f1 in KWin::EffectsHandlerImpl::drawWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:474
#22 0x00007f2cf3d918b1 in KWin::Effect::drawWindow (this=this@entry=0x2bc18c0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:580
#23 0x00007f2cf5df82f1 in KWin::EffectsHandlerImpl::drawWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:474
#24 0x00007f2cf3d918b1 in KWin::Effect::drawWindow (this=this@entry=0x2c289d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:580
#25 0x00007f2cf5df82f1 in KWin::EffectsHandlerImpl::drawWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:474
#26 0x00007f2cf5dbd451 in KWin::Scene::finalPaintWindow (this=<optimized out>, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../scene.cpp:607
#27 0x00007f2cf5df819a in KWin::EffectsHandlerImpl::paintWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:440
#28 0x00007f2cf3d91741 in KWin::Effect::paintWindow (this=this@entry=0x26e70e0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:550
#29 0x00007f2cf5df8141 in KWin::EffectsHandlerImpl::paintWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:437
#30 0x00007f2cf3d91741 in KWin::Effect::paintWindow (this=this@entry=0x26245b0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:550
#31 0x00007f2cf5df8141 in KWin::EffectsHandlerImpl::paintWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:437
#32 0x00007f2cf3d9fb67 in KWin::AnimationEffect::paintWindow (this=this@entry=0x24c3d00, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../../libkwineffects/kwinanimationeffect.cpp:585
#33 0x00007f2cf5df8141 in KWin::EffectsHandlerImpl::paintWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:437
#34 0x00007f2cf38dd41e in KWin::DesktopGridEffect::paintWindow (this=this@entry=0x2bc18c0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../../effects/desktopgrid/desktopgrid.cpp:361
#35 0x00007f2cf5df8141 in KWin::EffectsHandlerImpl::paintWindow (this=0x25f23d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:437
#36 0x00007f2cf3913aad in KWin::WobblyWindowsEffect::paintWindow (this=this@entry=0x2c289d0, w=w@entry=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../../effects/wobblywindows/wobblywindows.cpp:331
#37 0x00007f2cf5df8141 in KWin::EffectsHandlerImpl::paintWindow (this=0x25f23d0, w=0x4021a60, mask=mask@entry=86, region=..., data=...) at ../effects.cpp:437
#38 0x00007f2cf5dc2328 in KWin::Scene::paintWindow (this=this@entry=0x2618840, w=0x3ac8380, mask=86, region=..., quads=...) at ../scene.cpp:479
#39 0x00007f2cf5dbf316 in KWin::Scene::paintGenericScreen (this=this@entry=0x2618840, orig_mask=orig_mask@entry=80) at ../scene.cpp:243
#40 0x00007f2cf5dd3e04 in KWin::SceneOpenGL2::paintGenericScreen (this=this@entry=0x2618840, mask=mask@entry=80, data=...) at ../scene_opengl.cpp:1030
#41 0x00007f2cf5dbce5d in KWin::Scene::finalPaintScreen (this=0x2618840, mask=mask@entry=80, region=..., data=...) at ../scene.cpp:199
#42 0x00007f2cf5df7f1f in KWin::EffectsHandlerImpl::paintScreen (this=0x25f23d0, mask=mask@entry=80, region=..., data=...) at ../effects.cpp:397
#43 0x00007f2cf3d9166f in KWin::Effect::paintScreen (this=this@entry=0x26e70e0, mask=mask@entry=80, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:535
#44 0x00007f2cf5df7ecd in KWin::EffectsHandlerImpl::paintScreen (this=0x25f23d0, mask=mask@entry=80, region=..., data=...) at ../effects.cpp:394
#45 0x00007f2cf3d9166f in KWin::Effect::paintScreen (this=this@entry=0x26245b0, mask=mask@entry=80, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:535
#46 0x00007f2cf5df7ecd in KWin::EffectsHandlerImpl::paintScreen (this=0x25f23d0, mask=mask@entry=80, region=..., data=...) at ../effects.cpp:394
#47 0x00007f2cf3d9166f in KWin::Effect::paintScreen (this=this@entry=0x24c3d00, mask=mask@entry=80, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:535
#48 0x00007f2cf5df7ecd in KWin::EffectsHandlerImpl::paintScreen (this=0x25f23d0, mask=mask@entry=80, region=..., data=...) at ../effects.cpp:394
#49 0x00007f2cf38dc0ae in KWin::DesktopGridEffect::paintScreen (this=this@entry=0x2bc18c0, mask=mask@entry=80, region=..., data=...) at ../../effects/desktopgrid/desktopgrid.cpp:163
#50 0x00007f2cf5df7ecd in KWin::EffectsHandlerImpl::paintScreen (this=0x25f23d0, mask=mask@entry=80, region=..., data=...) at ../effects.cpp:394
#51 0x00007f2cf3d9166f in KWin::Effect::paintScreen (this=this@entry=0x2c289d0, mask=mask@entry=80, region=..., data=...) at ../../libkwineffects/kwineffects.cpp:535
#52 0x00007f2cf5df7ecd in KWin::EffectsHandlerImpl::paintScreen (this=0x25f23d0, mask=80, region=..., data=...) at ../effects.cpp:394
#53 0x00007f2cf5dbca7a in KWin::Scene::paintScreen (this=this@entry=0x2618840, mask=mask@entry=0x7fff69bda55c, damage=..., repaint=..., updateRegion=updateRegion@entry=0x7fff69bda570, validRegion=validRegion@entry=0x7fff69bda580) at ../scene.cpp:151
#54 0x00007f2cf5dda037 in KWin::SceneOpenGL::paint (this=0x2618840, damage=..., toplevels=...) at ../scene_opengl.cpp:661
#55 0x00007f2cf5db4f33 in KWin::Compositor::performCompositing (this=0x25902d0) at ../composite.cpp:700
#56 0x00007f2cf47f56f3 in QObject::event (this=0x25902d0, e=<optimized out>) at kernel/qobject.cpp:1267
#57 0x00007f2cf50cdb2c in QApplicationPrivate::notify_helper (this=0x242d530, receiver=0x25902d0, e=0x7fff69bda990) at kernel/qapplication.cpp:3720
#58 0x00007f2cf50d3000 in QApplication::notify (this=0x7fff69bdabd0, receiver=0x25902d0, e=0x7fff69bda990) at kernel/qapplication.cpp:3503
#59 0x00007f2cf47c3c2b in QCoreApplication::notifyInternal (this=0x7fff69bdabd0, receiver=0x25902d0, event=event@entry=0x7fff69bda990) at kernel/qcoreapplication.cpp:935
#60 0x00007f2cf481bae5 in sendEvent (event=0x7fff69bda990, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#61 QTimerInfoList::activateTimers (this=0x247a538) at kernel/qtimerinfo_unix.cpp:635
#62 0x00007f2cf48196a0 in QEventDispatcherUNIX::activateTimers (this=this@entry=0x246e130) at kernel/qeventdispatcher_unix.cpp:549
#63 0x00007f2cf481a243 in QEventDispatcherUNIX::processEvents (this=0x246e130, flags=flags@entry=...) at kernel/qeventdispatcher_unix.cpp:611
#64 0x00007f2cde3d796d in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at eventdispatchers/qunixeventdispatcher.cpp:62
#65 0x00007f2cf47c13e2 in QEventLoop::exec (this=this@entry=0x7fff69bdaaf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#66 0x00007f2cf47c902c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#67 0x00007f2cf4b0831c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#68 0x00007f2cf50c97a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#69 0x00007f2cf64f8310 in kdemain (argc=1, argv=0x7fff69bdad38) at ../main_x11.cpp:300
#70 0x00007f2cf6149a40 in __libc_start_main (main=0x400790 <main(int, char**)>, argc=3, argv=0x7fff69bdad38, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff69bdad28) at libc-start.c:289
#71 0x00000000004007c9 in _start ()

Reported using DrKonqi