Bug 420007

Application: kwin_x11 (5.12.9)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 5.3.0-46-generic x86_64
Distribution: Ubuntu 18.04.4 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I have clicked a intensive task in eclipse

- Unusual behavior I noticed:
The borders have dissapeared for a few seconds. But this dissapear sometimes happens for good and nothing else works : not even ALT+TAB therefor I am forces to reboot (in another tty, CTRL+ALT+F2..)

The crash can be reproduced sometimes.

-- 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 0x7fe76b74ecc0 (LWP 3320))]

Thread 8 (Thread 0x7fe69490c700 (LWP 4456)):
#0  0x00007fe76411f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5654dd749174) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fe76411f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5654dd749120, cond=0x5654dd749148) at pthread_cond_wait.c:502
#2  0x00007fe76411f9f3 in __pthread_cond_wait (cond=0x5654dd749148, mutex=0x5654dd749120) at pthread_cond_wait.c:655
#3  0x00007fe7682835ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe7632f36a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fe7632f3b0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fe76828217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe7641196db in start_thread (arg=0x7fe69490c700) at pthread_create.c:463
#8  0x00007fe76b0c088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fe7324f5700 (LWP 4393)):
#0  0x00007fe76b0b3cf6 in __GI_ppoll (fds=0x7fe690000d28, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007fe7684b5561 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fe7684b6c7e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fe76845e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe76827d23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe762c056f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007fe76828217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe7641196db in start_thread (arg=0x7fe7324f5700) at pthread_create.c:463
#8  0x00007fe76b0c088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fe73b3ff700 (LWP 3496)):
#0  0x00007fe76b0b3cf6 in __GI_ppoll (fds=0x7fe734000d68, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007fe7684b5561 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fe7684b6c7e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fe76845e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe76827d23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe762c056f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007fe76828217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe7641196db in start_thread (arg=0x7fe73b3ff700) at pthread_create.c:463
#8  0x00007fe76b0c088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fe7337fe700 (LWP 3476)):
#0  0x00007fe76411f9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fe7676b6fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fe76411f9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fe7676b6f68, cond=0x7fe7676b6f90) at pthread_cond_wait.c:502
#2  0x00007fe76411f9f3 in __pthread_cond_wait (cond=0x7fe7676b6f90, mutex=0x7fe7676b6f68) at pthread_cond_wait.c:655
#3  0x00007fe7673c05f4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007fe7673c0639 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007fe7641196db in start_thread (arg=0x7fe7337fe700) at pthread_create.c:463
#6  0x00007fe76b0c088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fe748a73700 (LWP 3425)):
#0  0x00007fe76b0b3cf6 in __GI_ppoll (fds=0x7fe740000d28, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007fe7684b5561 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fe7684b6c7e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fe76845e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe76827d23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe762c056f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007fe76828217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe7641196db in start_thread (arg=0x7fe748a73700) at pthread_create.c:463
#8  0x00007fe76b0c088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fe74b1a7700 (LWP 3344)):
#0  0x00007fe76b0b3cf6 in __GI_ppoll (fds=0x7fe74400aef8, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007fe7684b5561 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fe7684b6c7e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fe76845e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe76827d23a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe761aded45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6  0x00007fe76828217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe7641196db in start_thread (arg=0x7fe74b1a7700) at pthread_create.c:463
#8  0x00007fe76b0c088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fe751c4a700 (LWP 3330)):
#0  0x00007fe76b0b3bf9 in __GI___poll (fds=0x7fe751c49c68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fe769fbd747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fe769fbf36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fe752b295e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fe76828217d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe7641196db in start_thread (arg=0x7fe751c4a700) at pthread_create.c:463
#6  0x00007fe76b0c088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fe76b74ecc0 (LWP 3320)):
[KCrash Handler]
#6  0x00000000416f617b in  ()
#7  0x00007fe739aaf324 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.116
#8  0x00007fe739ab4768 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.116
#9  0x00007fe739677208 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.116
#10 0x00007fe768d6d005 in QOpenGLTextureGlyphCache::resizeTextureData(int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#11 0x00007fe768cf192a in QTextureGlyphCache::fillInPendingGlyphs() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#12 0x00007fe7632dcc56 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007fe7632d9949 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007fe763388158 in QQuickTextNode::addGlyphs(QPointF const&, QGlyphRun const&, QColor const&, QQuickText::TextStyle, QColor const&, QSGNode*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007fe76338d264 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007fe7633890ba in QQuickTextNode::addTextLayout(QPointF const&, QTextLayout*, QColor const&, QQuickText::TextStyle, QColor const&, QColor const&, QColor const&, QColor const&, int, int, int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007fe763387d21 in QQuickText::updatePaintNode(QSGNode*, QQuickItem::UpdatePaintNodeData*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007fe763342a18 in QQuickWindowPrivate::updateDirtyNode(QQuickItem*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007fe763343293 in QQuickWindowPrivate::updateDirtyNodes() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007fe763344512 in QQuickWindowPrivate::syncSceneGraph() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007fe7633fd4a8 in QQuickRenderControl::grab() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007fe748a91292 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#23 0x00007fe76848f66f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fe76849bfc7 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fe76849c328 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fe76849007b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fe7691de83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fe7691e6104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007fe7684608d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fe7684b8d2e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fe7684b6ee2 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fe752b8e66d in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#33 0x00007fe76845e90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007fe7684679b4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007fe76b398dbb in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#36 0x00007fe76afc0b97 in __libc_start_main (main=0x5654dae01730, argc=3, argv=0x7ffedd112208, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffedd1121f8) at ../csu/libc-start.c:310
#37 0x00005654dae0176a in _start ()

Reported using DrKonqi