Application: kwin_x11 (5.8.3)

Qt Version: 5.6.1
Frameworks Version: 5.26.0
Operating System: Linux 4.4.27-2-default x86_64
Distribution: "openSUSE Leap 42.2"

-- Information about the crash:
- What I was doing when the application crashed: kwin crashes inmediately running the system, but not always.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fce7f51b940 (LWP 2195))]

Thread 6 (Thread 0x7fce59ba3700 (LWP 2322)):
#0  0x00007fce7ec7cb03 in select () from /lib64/libc.so.6
#1  0x00007fce7c34f849 in qt_safe_select (nfds=11, fdread=0x7fce40000a78, fdwrite=0x7fce40000d08, fdexcept=0x7fce40000f98, orig_timeout=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007fce7c3510c3 in QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7fce400008e0, flags=..., flags@entry=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:196
#3  0x00007fce7c351527 in QEventDispatcherUNIX::processEvents (this=0x7fce400008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#4  0x00007fce7c300fdb in QEventLoop::exec (this=this@entry=0x7fce59ba2c70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fce7c13bf1a in QThread::exec (this=this@entry=0x209ab60) at thread/qthread.cpp:500
#6  0x00007fce76d289b8 in QQmlThreadPrivate::run (this=0x209ab60) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007fce7c1409e9 in QThreadPrivate::start (arg=0x209ab60) at thread/qthread_unix.cpp:341
#8  0x00007fce7ef45734 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fce7ec83d3d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fce58ba8700 (LWP 2277)):
#0  0x00007fce7ef4a0af in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fce7b2d193b in ?? () from /usr/lib64/libQt5Script.so.5
#2  0x00007fce7b2d1969 in ?? () from /usr/lib64/libQt5Script.so.5
#3  0x00007fce7ef45734 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fce7ec83d3d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fce5b7fe700 (LWP 2271)):
#0  0x00007fce7ec7cb03 in select () from /lib64/libc.so.6
#1  0x00007fce7c34f849 in qt_safe_select (nfds=13, fdread=0x7fce48000a98, fdwrite=0x7fce48000d28, fdexcept=0x7fce48000fb8, orig_timeout=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007fce7c3510c3 in QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7fce48000900, flags=..., flags@entry=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:196
#3  0x00007fce7c351527 in QEventDispatcherUNIX::processEvents (this=0x7fce480008e0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#4  0x00007fce7c300fdb in QEventLoop::exec (this=this@entry=0x7fce5b7fdc70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fce7c13bf1a in QThread::exec (this=this@entry=0x203df80) at thread/qthread.cpp:500
#6  0x00007fce76d289b8 in QQmlThreadPrivate::run (this=0x203df80) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/qml/qml/ftw/qqmlthread.cpp:141
#7  0x00007fce7c1409e9 in QThreadPrivate::start (arg=0x203df80) at thread/qthread_unix.cpp:341
#8  0x00007fce7ef45734 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fce7ec83d3d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fce61d62700 (LWP 2238)):
#0  0x00007fce7ec7cb03 in select () from /lib64/libc.so.6
#1  0x00007fce7c34f849 in qt_safe_select (nfds=8, fdread=0x7fce54000a98, fdwrite=0x7fce54000d28, fdexcept=0x7fce54000fb8, orig_timeout=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007fce7c3510c3 in QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7fce54000900, flags=..., flags@entry=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:196
#3  0x00007fce7c351527 in QEventDispatcherUNIX::processEvents (this=0x7fce540008e0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#4  0x00007fce7c300fdb in QEventLoop::exec (this=this@entry=0x7fce61d61c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fce7c13bf1a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
#6  0x00007fce75f091d5 in ?? () from /usr/lib64/libQt5DBus.so.5
#7  0x00007fce7c1409e9 in QThreadPrivate::start (arg=0x7fce76171ce0) at thread/qthread_unix.cpp:341
#8  0x00007fce7ef45734 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fce7ec83d3d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fce63e73700 (LWP 2211)):
#0  0x00007fce7ec7b49d in poll () from /lib64/libc.so.6
#1  0x00007fce7de023e2 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007fce7de03fcf in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007fce64f4f839 in QXcbEventReader::run (this=0x1e96e80) at qxcbconnection.cpp:1325
#4  0x00007fce7c1409e9 in QThreadPrivate::start (arg=0x1e96e80) at thread/qthread_unix.cpp:341
#5  0x00007fce7ef45734 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fce7ec83d3d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fce7f51b940 (LWP 2195)):
[KCrash Handler]
#6  0x0000000041848c0f in ?? ()
#7  0x00007fce6d3af2c0 in ?? () from /usr/lib64/libnvidia-glcore.so.340.98
#8  0x00007fce6d3b6350 in ?? () from /usr/lib64/libnvidia-glcore.so.340.98
#9  0x00007fce6d023378 in ?? () from /usr/lib64/libnvidia-glcore.so.340.98
#10 0x00007fce7cb5eb6a in QOpenGLFunctions::glDrawArrays (count=4, first=0, mode=6, this=0x28c15e0) at ../../src/gui/opengl/qopenglfunctions.h:717
#11 QOpenGLTextureGlyphCache::resizeTextureData (this=0x2b24aa0, width=<optimized out>, height=<optimized out>) at opengl/qopengltextureglyphcache.cpp:299
#12 0x00007fce7cad3010 in QTextureGlyphCache::resizeCache (height=16, width=512, this=0x2b24aa0) at painting/qtextureglyphcache_p.h:124
#13 QTextureGlyphCache::fillInPendingGlyphs (this=0x2b24aa0) at painting/qtextureglyphcache.cpp:241
#14 0x00007fce773e8cd3 in QSGTextMaskMaterial::populate (this=<optimized out>, p=..., glyphIndexes=..., glyphPositions=..., geometry=geometry@entry=0x25d9be0, boundingRect=boundingRect@entry=0x7ffe38d81b80, baseLine=baseLine@entry=0x25d9bc8, margins=...) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/scenegraph/qsgdefaultglyphnode_p.cpp:451
#15 0x00007fce773e6d4d in QSGDefaultGlyphNode::update (this=0x25d9ad0) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/scenegraph/qsgdefaultglyphnode.cpp:121
#16 0x00007fce77467dfb in QQuickTextNode::addGlyphs (this=this@entry=0x2b24580, position=..., glyphs=..., color=..., style=style@entry=QQuickText::Normal, styleColor=..., parentNode=parentNode@entry=0x0) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/items/qquicktextnode.cpp:109
#17 0x00007fce7746de77 in QQuickTextNodeEngine::addToSceneGraph (this=this@entry=0x7ffe38d81dd0, parentNode=parentNode@entry=0x2b24580, style=style@entry=QQuickText::Normal, styleColor=...) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/items/qquicktextnodeengine.cpp:768
#18 0x00007fce774685e8 in QQuickTextNode::addTextLayout (this=this@entry=0x2b24580, position=..., textLayout=textLayout@entry=0x28b2780, color=..., style=QQuickText::Normal, styleColor=..., anchorColor=..., selectionColor=..., selectedTextColor=..., selectionStart=selectionStart@entry=-1, selectionEnd=selectionEnd@entry=-1, lineStart=lineStart@entry=0, lineCount=lineCount@entry=1) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/items/qquicktextnode.cpp:259
#19 0x00007fce774677b7 in QQuickText::updatePaintNode (this=0x28ada00, oldNode=<optimized out>, data=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/items/qquicktext.cpp:2286
#20 0x00007fce77427c57 in QQuickWindowPrivate::updateDirtyNode (this=this@entry=0x2b17ae0, item=item@entry=0x28ada00) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/items/qquickwindow.cpp:3025
#21 0x00007fce774287ca in QQuickWindowPrivate::updateDirtyNodes (this=this@entry=0x2b17ae0) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/items/qquickwindow.cpp:2770
#22 0x00007fce77429720 in QQuickWindowPrivate::syncSceneGraph (this=0x2b17ae0) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/items/qquickwindow.cpp:379
#23 0x00007fce7750954c in QQuickRenderControl::sync (this=<optimized out>) at /usr/src/debug/qtdeclarative-opensource-src-5.6.1/src/quick/items/qquickrendercontrol.cpp:266
#24 0x00007fce60273906 in ?? () from /usr/lib64/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#25 0x00007fce7c32d1c3 in QtPrivate::QSlotObjectBase::call (a=0x7ffe38d845a0, r=0x26dd2e0, this=0x271beb0) at ../../src/corelib/kernel/qobject_impl.h:124
#26 QMetaObject::activate (sender=sender@entry=0x27f28e0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3715
#27 0x00007fce7c32d717 in QMetaObject::activate (sender=sender@entry=0x27f28e0, m=m@entry=0x7fce7c749700 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3595
#28 0x00007fce7c3a6220 in QTimer::timeout (this=this@entry=0x27f28e0) at .moc/moc_qtimer.cpp:198
#29 0x00007fce7c33a112 in QTimer::timerEvent (this=0x27f28e0, e=<optimized out>) at kernel/qtimer.cpp:247
#30 0x00007fce7c32df34 in QObject::event (this=0x27f28e0, e=<optimized out>) at kernel/qobject.cpp:1237
#31 0x00007fce7d009e3c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#32 0x00007fce7d00e49a in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#33 0x00007fce7c302fc5 in QCoreApplication::notifyInternal2 (receiver=0x27f28e0, event=event@entry=0x7ffe38d849e0) at kernel/qcoreapplication.cpp:1015
#34 0x00007fce7c352c7e in QCoreApplication::sendEvent (event=0x7ffe38d849e0, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:225
#35 QTimerInfoList::activateTimers (this=0x1ed5888) at kernel/qtimerinfo_unix.cpp:637
#36 0x00007fce7c350970 in QEventDispatcherUNIX::activateTimers (this=this@entry=0x1ec82b0) at kernel/qeventdispatcher_unix.cpp:549
#37 0x00007fce7c3515c8 in QEventDispatcherUNIX::processEvents (this=0x1ec82b0, flags=flags@entry=...) at kernel/qeventdispatcher_unix.cpp:611
#38 0x00007fce64fb194d in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at eventdispatchers/qunixeventdispatcher.cpp:62
#39 0x00007fce7c300fdb in QEventLoop::exec (this=this@entry=0x7ffe38d84b40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#40 0x00007fce7c308ec6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#41 0x00007fce7f1639cc in kdemain () from /usr/lib64/libkdeinit5_kwin_x11.so
#42 0x00007fce7ebba6e5 in __libc_start_main () from /lib64/libc.so.6
#43 0x0000000000400809 in _start ()

Possible duplicates by query: bug 364259, bug 364008, bug 358369.

Reported using DrKonqi