Bug 414871

Application: kwin_x11 (5.12.9)

Qt Version: 5.9.5
Frameworks Version: 5.47.0
Operating System: Linux 4.15.0-72-generic x86_64
Distribution: Ubuntu 18.04.3 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I was using VLC's "Open recent media" dialog box.  The crash occurred immediately after successfully opening an mp3.

-- 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 0x7f39740dccc0 (LWP 4315))]

Thread 8 (Thread 0x7f38a71dc700 (LWP 18634)):
#0  0x00007f396ca0d9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555bd5313874) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f396ca0d9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x555bd5313820, cond=0x555bd5313848) at pthread_cond_wait.c:502
#2  0x00007f396ca0d9f3 in __pthread_cond_wait (cond=0x555bd5313848, mutex=0x555bd5313820) at pthread_cond_wait.c:655
#3  0x00007f3970bdd5ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f396bbc66a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f396bbc6b0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f3970bdc17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f396ca076db in start_thread (arg=0x7f38a71dc700) at pthread_create.c:463
#8  0x00007f3973a4988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f393bfff700 (LWP 16011)):
#0  0x00007f3973a3ccf6 in __GI_ppoll (fds=0x7f393404f528, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f3970e0f651 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f3970e10d6e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f3970db89fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f3970bd723a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f396b4d06f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f3970bdc17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f396ca076db in start_thread (arg=0x7f393bfff700) at pthread_create.c:463
#8  0x00007f3973a4988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f395214f700 (LWP 1821)):
#0  0x00007f3973a3ccf6 in __GI_ppoll (fds=0x7f3944010458, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f3970e0f651 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f3970e10d6e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f3970db89fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f3970bd723a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f396b4d06f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f3970bdc17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f396ca076db in start_thread (arg=0x7f395214f700) at pthread_create.c:463
#8  0x00007f3973a4988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f39437ff700 (LWP 28210)):
#0  0x00007f396ca0d9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x555bd4ce7560) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f396ca0d9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x555bd4ce7510, cond=0x555bd4ce7538) at pthread_cond_wait.c:502
#2  0x00007f396ca0d9f3 in __pthread_cond_wait (cond=0x555bd4ce7538, mutex=0x555bd4ce7510) at pthread_cond_wait.c:655
#3  0x00007f3970bdd5ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f396bbc66a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f396bbc6b0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f3970bdc17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f396ca076db in start_thread (arg=0x7f39437ff700) at pthread_create.c:463
#8  0x00007f3973a4988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f393b014700 (LWP 4716)):
#0  0x00007f396ca0d9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f396fff8fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f396ca0d9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f396fff8f68, cond=0x7f396fff8f90) at pthread_cond_wait.c:502
#2  0x00007f396ca0d9f3 in __pthread_cond_wait (cond=0x7f396fff8f90, mutex=0x7f396fff8f68) at pthread_cond_wait.c:655
#3  0x00007f396fd025f4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f396fd02639 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f396ca076db in start_thread (arg=0x7f393b014700) at pthread_create.c:463
#6  0x00007f3973a4988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f3951297700 (LWP 4569)):
#0  0x00007f3973a3ccf6 in __GI_ppoll (fds=0x7f3948000d28, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f3970e0f651 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f3970e10d6e in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f3970db89fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f3970bd723a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f396b4d06f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f3970bdc17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f396ca076db in start_thread (arg=0x7f3951297700) at pthread_create.c:463
#8  0x00007f3973a4988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f3953def700 (LWP 4334)):
#0  0x00007fff7095bb49 in clock_gettime ()
#1  0x00007f3973a58ea6 in __GI___clock_gettime (clock_id=1, tp=0x7f3953deeb80) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f3970e132b1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f3970e11ae9 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f3970e120c5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f3970e11074 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f3970db89fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f3970bd723a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f396a385d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f3970bdc17d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f396ca076db in start_thread (arg=0x7f3953def700) at pthread_create.c:463
#11 0x00007f3973a4988f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f39740dccc0 (LWP 4315)):
[KCrash Handler]
#6  0x00000000405d113b in  ()
#7  0x00007f39421e9324 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.116
#8  0x00007f39421ee768 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.116
#9  0x00007f3941db1208 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.116
#10 0x00007f39716cbff5 in QOpenGLTextureGlyphCache::resizeTextureData(int, int) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#11 0x00007f397165091a in QTextureGlyphCache::fillInPendingGlyphs() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#12 0x00007f396bbafc56 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007f396bbac949 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f396bc5b158 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 0x00007f396bc60264 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007f396bc5c0ba 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 0x00007f396bc5ad21 in QQuickText::updatePaintNode(QSGNode*, QQuickItem::UpdatePaintNodeData*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007f396bc15a18 in QQuickWindowPrivate::updateDirtyNode(QQuickItem*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007f396bc16293 in QQuickWindowPrivate::updateDirtyNodes() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007f396bc17512 in QQuickWindowPrivate::syncSceneGraph() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007f396bcd04a8 in QQuickRenderControl::grab() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007f39514d5292 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#23 0x00007f3970de975f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f3970df60b7 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f3970df6418 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f3970dea16b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f3971b4483c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f3971b4c104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f3970dba9c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f3970e12e1e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f3970e10fd2 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f395b47766d in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#33 0x00007f3970db89fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f3970dc1aa4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f3973d28dbb in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#36 0x00007f3973949b97 in __libc_start_main (main=0x555bd2d23730, argc=1, argv=0x7fff708bed58, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff708bed48) at ../csu/libc-start.c:310
#37 0x0000555bd2d2376a in _start ()

Reported using DrKonqi