Bug 387636

Application: kwin_x11 (5.11.4)

Qt Version: 5.9.3
Frameworks Version: 5.40.0
Operating System: Linux 4.9.66-1-lts x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
The last crash was when I added a new tab in Google Chrome. The same crashes were happened in other situations, but I don't remember what I exactly did. But my mouse cursor was close to a window title line in every case :)

The crash can be reproduced sometimes.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0913682840 (LWP 702))]

Thread 9 (Thread 0x7f083a080700 (LWP 3968)):
#0  0x00007f090bfb038d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f091040c65c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f090b19d0ba in  () at /usr/lib/libQt5Quick.so.5
#3  0x00007f090b19d544 in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f091040b1cb in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f090bfaa08a in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f091301a47f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7f08ed313700 (LWP 3967)):
#0  0x00007f0913010076 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f0910645d23 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f09106474bf in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f09105ed99b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f091040627e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f090aab0cf9 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f091040b1cb in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f090bfaa08a in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f091301a47f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f08dbb6c700 (LWP 3217)):
#0  0x00007f090bfb038d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f091040c65c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007f090b19d0ba in  () at /usr/lib/libQt5Quick.so.5
#3  0x00007f090b19d544 in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007f091040b1cb in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f090bfaa08a in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f091301a47f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f08e6ffe700 (LWP 836)):
#0  0x00007f0913010076 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f0910645d23 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f09106474bf in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f09105ed99b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f091040627e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f090aab0cf9 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f091040b1cb in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f090bfaa08a in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f091301a47f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f08db353700 (LWP 773)):
#0  0x00007f090bfb038d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f090f563ef7 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007f090f563f39 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007f090bfaa08a in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f091301a47f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f08e7fff700 (LWP 760)):
#0  0x00007f0913010076 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f0910645d23 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f09106474bf in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f09105ed99b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f091040627e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f090aab0cf9 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007f091040b1cb in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f090bfaa08a in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f091301a47f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f08ee524700 (LWP 740)):
#0  0x00007f0913010076 in ppoll () at /usr/lib/libc.so.6
#1  0x00007f0910645d23 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007f09106474bf in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007f09105ed99b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f091040627e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007f0909c52376 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007f091040b1cb in  () at /usr/lib/libQt5Core.so.5
#7  0x00007f090bfaa08a in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f091301a47f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f08f9ee8700 (LWP 725)):
#0  0x00007f091300ff7b in poll () at /usr/lib/libc.so.6
#1  0x00007f091210d8e0 in  () at /usr/lib/libxcb.so.1
#2  0x00007f091210f679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f08fadc390a in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f091040b1cb in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f090bfaa08a in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f091301a47f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f0913682840 (LWP 702)):
[KCrash Handler]
#5  0x00000000401c8b19 in  ()
#6  0x00007f08e586dfb9 in  () at /usr/lib/libnvidia-glcore.so.387.34
#7  0x00007f08e5874b14 in  () at /usr/lib/libnvidia-glcore.so.387.34
#8  0x00007f08e587d814 in  () at /usr/lib/libnvidia-glcore.so.387.34
#9  0x00007f08e543da95 in  () at /usr/lib/libnvidia-glcore.so.387.34
#10 0x00007f090b15c7d7 in QSGBatchRenderer::Renderer::renderMergedBatch(QSGBatchRenderer::Batch const*) () at /usr/lib/libQt5Quick.so.5
#11 0x00007f090b15da76 in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib/libQt5Quick.so.5
#12 0x00007f090b1632ee in QSGBatchRenderer::Renderer::render() () at /usr/lib/libQt5Quick.so.5
#13 0x00007f090b153922 in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib/libQt5Quick.so.5
#14 0x00007f090b153e20 in QSGRenderer::renderScene(unsigned int) () at /usr/lib/libQt5Quick.so.5
#15 0x00007f090b18efc0 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib/libQt5Quick.so.5
#16 0x00007f090b1ed8a0 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/libQt5Quick.so.5
#17 0x00007f090b2aa7ba in QQuickRenderControl::render() () at /usr/lib/libQt5Quick.so.5
#18 0x00007f08ec78192d in  () at /usr/lib/qt/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#19 0x00007f091061f24f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#20 0x00007f091062c058 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#21 0x00007f091062c3c9 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib/libQt5Core.so.5
#22 0x00007f091061fb2b in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#23 0x00007f091130cf5c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#24 0x00007f0911314a36 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#25 0x00007f09105ef570 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#26 0x00007f0910649628 in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#27 0x00007f0910647724 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#28 0x00007f08fae28ace in  () at /usr/lib/libQt5XcbQpa.so.5
#29 0x00007f09105ed99b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#30 0x00007f09105f69e8 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#31 0x00007f09132e46e3 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#32 0x00007f0912f44f6a in __libc_start_main () at /usr/lib/libc.so.6
#33 0x0000565469dc37aa in _start ()

Reported using DrKonqi