Bug 417804

Summary: Kamoso segfault on startup
Product: [Applications] kamoso Reporter: Zack Emmert <zack>
Component: generalAssignee: Aleix Pol <aleixpol>
Status: RESOLVED DOWNSTREAM    
Severity: crash CC: philipp.verpoort
Priority: NOR Keywords: drkonqi
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Zack Emmert 2020-02-17 22:30:55 UTC 
Application: kamoso (3.2.3)

Qt Version: 5.13.2
Frameworks Version: 5.66.0
Operating System: Linux 5.4.12-200.fc31.x86_64 x86_64
Distribution: "Fedora release 31 (Thirty One)"

-- Information about the crash:
- What I was doing when the application crashed:
Attempting to open it. Application showed UI elements and a black rectangle in place of the camera view, then crashed.

The crash can be reproduced every time.

-- Backtrace:
Application: Kamoso (kamoso), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fce3ae1f580 (LWP 31371))]

Thread 24 (Thread 0x7fcde37fe700 (LWP 31396)):
[KCrash Handler]
#6  0x00007fce25dde377 in convert_ubyte () from /usr/lib64/dri/i965_dri.so
#7  0x00007fce25dfdace in _mesa_format_convert () from /usr/lib64/dri/i965_dri.so
#8  0x00007fce25c6fdf8 in _mesa_texstore () from /usr/lib64/dri/i965_dri.so
#9  0x00007fce25c7086c in store_texsubimage () from /usr/lib64/dri/i965_dri.so
#10 0x00007fce25b39e77 in intel_upload_tex () from /usr/lib64/dri/i965_dri.so
#11 0x00007fce25b3a55e in intelTexImage () from /usr/lib64/dri/i965_dri.so
#12 0x00007fce25c589cc in teximage_err () from /usr/lib64/dri/i965_dri.so
#13 0x00007fce25c5a7b2 in _mesa_TexImage2D () from /usr/lib64/dri/i965_dri.so
#14 0x00007fce1870c94b in VideoMaterial::bindTexture(int, unsigned char const*) () from /usr/lib64/gstreamer-1.0/gstkamosoqt5videosink.so
#15 0x00007fce1870ca67 in VideoMaterial::bind() () from /usr/lib64/gstreamer-1.0/gstkamosoqt5videosink.so
#16 0x00007fce1870d055 in VideoMaterialShader::updateState(QSGMaterialShader::RenderState const&, QSGMaterial*, QSGMaterial*) () from /usr/lib64/gstreamer-1.0/gstkamosoqt5videosink.so
#17 0x00007fce40a803c6 in QSGBatchRenderer::Renderer::renderMergedBatch(QSGBatchRenderer::Batch const*) () from /lib64/libQt5Quick.so.5
#18 0x00007fce40a81df5 in QSGBatchRenderer::Renderer::renderBatches() () from /lib64/libQt5Quick.so.5
#19 0x00007fce40a88242 in QSGBatchRenderer::Renderer::render() () from /lib64/libQt5Quick.so.5
#20 0x00007fce40a74d24 in QSGRenderer::renderScene(QSGBindable const&) () from /lib64/libQt5Quick.so.5
#21 0x00007fce40a751d3 in QSGRenderer::renderScene(unsigned int) () from /lib64/libQt5Quick.so.5
#22 0x00007fce40ab7212 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () from /lib64/libQt5Quick.so.5
#23 0x00007fce40b1cadc in QQuickWindowPrivate::renderSceneGraph(QSize const&) () from /lib64/libQt5Quick.so.5
#24 0x00007fce40ac294f in QSGRenderThread::syncAndRender() () from /lib64/libQt5Quick.so.5
#25 0x00007fce40ac66f8 in QSGRenderThread::run() () from /lib64/libQt5Quick.so.5
#26 0x00007fce3eadad96 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#27 0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#28 0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 23 (Thread 0x7fcde8ff9700 (LWP 31394)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce40761287 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#3  0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#4  0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 22 (Thread 0x7fcde97fa700 (LWP 31393)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce18166547 in gst_app_src_create () from /lib64/libgstapp-1.0.so.0
#3  0x00007fce1b3be47d in gst_base_src_get_range () from /lib64/libgstbase-1.0.so.0
#4  0x00007fce1b3c155c in gst_base_src_loop () from /lib64/libgstbase-1.0.so.0
#5  0x00007fce40761087 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#6  0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#7  0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#8  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 21 (Thread 0x7fcde9ffb700 (LWP 31392)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce18695ef6 in gst_queue_loop () from /usr/lib64/gstreamer-1.0/libgstcoreelements.so
#3  0x00007fce40761087 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#4  0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#6  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#7  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 20 (Thread 0x7fcdea7fc700 (LWP 31391)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce40761287 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#3  0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#4  0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 19 (Thread 0x7fcdeaffd700 (LWP 31390)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce18695ef6 in gst_queue_loop () from /usr/lib64/gstreamer-1.0/libgstcoreelements.so
#3  0x00007fce40761087 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#4  0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#6  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#7  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 18 (Thread 0x7fcdeb7fe700 (LWP 31389)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce18695ef6 in gst_queue_loop () from /usr/lib64/gstreamer-1.0/libgstcoreelements.so
#3  0x00007fce40761087 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#4  0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#6  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#7  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7fcde3fff700 (LWP 31388)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce18695ef6 in gst_queue_loop () from /usr/lib64/gstreamer-1.0/libgstcoreelements.so
#3  0x00007fce40761087 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#4  0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#6  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#7  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7fcdebfff700 (LWP 31387)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce18695ef6 in gst_queue_loop () from /usr/lib64/gstreamer-1.0/libgstcoreelements.so
#3  0x00007fce40761087 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#4  0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#6  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#7  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7fce0cf18700 (LWP 31386)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce18695ef6 in gst_queue_loop () from /usr/lib64/gstreamer-1.0/libgstcoreelements.so
#3  0x00007fce40761087 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#4  0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#6  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#7  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7fce0d7fa700 (LWP 31385)):
#0  0x00007fce3de0807a in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fce3eae07e9 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib64/libQt5Core.so.5
#2  0x00007fce3eae090b in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQt5Core.so.5
#3  0x00007fce3eade623 in QThreadPoolThread::run() () from /lib64/libQt5Core.so.5
#4  0x00007fce3eadad96 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7fce0dffb700 (LWP 31384)):
#0  0x00007fce405d8352 in g_main_context_check () from /lib64/libglib-2.0.so.0
#1  0x00007fce405d87b2 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007fce405d8943 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007fce3ecdf843 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007fce3ec891db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007fce3ead9c45 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007fce3eadad96 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#8  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7fce0e7fc700 (LWP 31383)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce1b3b86af in gst_base_sink_wait_preroll () from /lib64/libgstbase-1.0.so.0
#3  0x00007fce1b3b8c21 in gst_base_sink_do_preroll () from /lib64/libgstbase-1.0.so.0
#4  0x00007fce1b3b93d1 in gst_base_sink_do_sync.constprop () from /lib64/libgstbase-1.0.so.0
#5  0x00007fce1b3baa1d in gst_base_sink_chain_unlocked.isra () from /lib64/libgstbase-1.0.so.0
#6  0x00007fce1b3bbcb8 in gst_base_sink_chain_main () from /lib64/libgstbase-1.0.so.0
#7  0x00007fce40729e9f in gst_pad_chain_data_unchecked () from /lib64/libgstreamer-1.0.so.0
#8  0x00007fce4072bf01 in gst_pad_push_data () from /lib64/libgstreamer-1.0.so.0
#9  0x00007fce40732d13 in gst_pad_push () from /lib64/libgstreamer-1.0.so.0
#10 0x00007fce1b3c63a0 in gst_base_transform_chain () from /lib64/libgstbase-1.0.so.0
#11 0x00007fce40729e9f in gst_pad_chain_data_unchecked () from /lib64/libgstreamer-1.0.so.0
#12 0x00007fce4072bf01 in gst_pad_push_data () from /lib64/libgstreamer-1.0.so.0
#13 0x00007fce40732d13 in gst_pad_push () from /lib64/libgstreamer-1.0.so.0
#14 0x00007fce1b3c63a0 in gst_base_transform_chain () from /lib64/libgstbase-1.0.so.0
#15 0x00007fce40729e9f in gst_pad_chain_data_unchecked () from /lib64/libgstreamer-1.0.so.0
#16 0x00007fce4072bf01 in gst_pad_push_data () from /lib64/libgstreamer-1.0.so.0
#17 0x00007fce40732d13 in gst_pad_push () from /lib64/libgstreamer-1.0.so.0
#18 0x00007fce185b1171 in gst_image_freeze_src_loop () from /usr/lib64/gstreamer-1.0/libgstimagefreeze.so
#19 0x00007fce40761087 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#20 0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#21 0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#22 0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#23 0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7fce0effd700 (LWP 31382)):
#0  0x00007fce3e7371ed in syscall () from /lib64/libc.so.6
#1  0x00007fce40624b93 in g_cond_wait () from /lib64/libglib-2.0.so.0
#2  0x00007fce40761287 in gst_task_func () from /lib64/libgstreamer-1.0.so.0
#3  0x00007fce40602704 in g_thread_pool_thread_proxy () from /lib64/libglib-2.0.so.0
#4  0x00007fce40601fc2 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7fce0f7fe700 (LWP 31381)):
#0  0x00007fce3e73d92c in recv () from /lib64/libc.so.6
#1  0x00007fce3e569fc5 in QNetworkInterfaceManager::scan() () from /lib64/libQt5Network.so.5
#2  0x00007fce3e55a4d7 in QNetworkInterfaceManager::allInterfaces() () from /lib64/libQt5Network.so.5
#3  0x00007fce3e55ad07 in QNetworkInterface::allInterfaces() () from /lib64/libQt5Network.so.5
#4  0x00007fce18655201 in QGenericEngine::doRequestUpdate() () from /usr/lib64/qt5/plugins/bearer/libqgenericbearer.so
#5  0x00007fce3ec98c1a in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const () from /lib64/libQt5Core.so.5
#6  0x00007fce3ec9a1c6 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /lib64/libQt5Core.so.5
#7  0x00007fce3e544e2e in QNetworkConfigurationManagerPrivate::pollEngines() () from /lib64/libQt5Network.so.5
#8  0x00007fce3e5dd2a7 in QNetworkConfigurationManagerPrivate::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /lib64/libQt5Network.so.5
#9  0x00007fce3ecb491b in QMetaObject::activate(QObject*, int, int, void**) () from /lib64/libQt5Core.so.5
#10 0x00007fce3ecc118b in QTimer::timeout(QTimer::QPrivateSignal) () from /lib64/libQt5Core.so.5
#11 0x00007fce3ecb5735 in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#12 0x00007fce3ec8a355 in doNotify(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#13 0x00007fce3ec8a461 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#14 0x00007fce3ecdeae8 in QTimerInfoList::activateTimers() () from /lib64/libQt5Core.so.5
#15 0x00007fce3ecdf39c in timerSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#16 0x00007fce405d8510 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#17 0x00007fce405d88a0 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#18 0x00007fce405d8943 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#19 0x00007fce3ecdf825 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#20 0x00007fce3ec891db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#21 0x00007fce3ead9c45 in QThread::exec() () from /lib64/libQt5Core.so.5
#22 0x00007fce3eadad96 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#23 0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#24 0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7fce0ffff700 (LWP 31380)):
#0  0x00007fce40624a4d in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007fce405d8276 in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007fce405d87b2 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007fce405d8943 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007fce3ecdf843 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007fce3ec891db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007fce3ead9c45 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007fce40a3b0da in QQuickPixmapReader::run() () from /lib64/libQt5Quick.so.5
#8  0x00007fce3eadad96 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7fce1a978700 (LWP 31379)):
#0  0x00007fce3e73ca0e in epoll_wait () from /lib64/libc.so.6
#1  0x00007fce2464ea4c in loop_iterate () from /usr/lib64/spa/support/libspa-support.so
#2  0x00007fce2460945d in do_loop () from /lib64/libpipewire-0.2.so.1
#3  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fce1b179700 (LWP 31378)):
#0  0x00007fce3e73ca0e in epoll_wait () from /lib64/libc.so.6
#1  0x00007fce2464ea4c in loop_iterate () from /usr/lib64/spa/support/libspa-support.so
#2  0x00007fce245ef078 in do_loop () from /lib64/libpipewire-0.2.so.1
#3  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7fce1bfff700 (LWP 31377)):
#0  0x00007fce3e72d44c in read () from /lib64/libc.so.6
#1  0x00007fce4062053f in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007fce405d8357 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007fce405d87b2 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007fce405d8943 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007fce3ecdf843 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007fce3ec891db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007fce3ead9c45 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007fce40388399 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#9  0x00007fce3eadad96 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#11 0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7fce2507b700 (LWP 31376)):
#0  0x00007fce3de07d45 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fce25f0b19b in util_queue_thread_func () from /usr/lib64/dri/i965_dri.so
#2  0x00007fce25f0adab in impl_thrd_routine () from /usr/lib64/dri/i965_dri.so
#3  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fce275ef700 (LWP 31375)):
#0  0x00007fce405d5379 in g_source_unref_internal () from /lib64/libglib-2.0.so.0
#1  0x00007fce405d69bc in g_source_iter_next () from /lib64/libglib-2.0.so.0
#2  0x00007fce405d816f in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007fce405d87b2 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007fce405d8943 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007fce3ecdf843 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007fce3ec891db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007fce3ead9c45 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007fce40388399 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#9  0x00007fce3eadad96 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#11 0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fce2cd99700 (LWP 31373)):
#0  0x00007fce3e731a6f in poll () from /lib64/libc.so.6
#1  0x00007fce405d880e in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007fce405d8943 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007fce3ecdf843 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007fce3ec891db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007fce3ead9c45 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007fce3db8ef6a in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#7  0x00007fce3eadad96 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#9  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fce2daf0700 (LWP 31372)):
#0  0x00007fce3e731a6f in poll () from /lib64/libc.so.6
#1  0x00007fce3cc1e38a in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007fce3cc1ffea in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007fce2dce5d48 in QXcbEventQueue::run() () from /lib64/libQt5XcbQpa.so.5
#4  0x00007fce3eadad96 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007fce3de014e2 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fce3e73c6d3 in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fce3ae1f580 (LWP 31371)):
#0  0x00007fce3e72d44c in read () from /lib64/libc.so.6
#1  0x00007fce4062053f in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007fce405d8357 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007fce405d87b2 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007fce405d8943 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007fce3ecdf843 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007fce3ec891db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007fce3ec910b6 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#8  0x00005558c9807953 in main ()
[Inferior 1 (process 31371) detached]

Reported using DrKonqi
Comment 1 Christoph Feck 2020-03-06 12:49:43 UTC 
Crash is in the i915 Mesa driver. If this is reproducible, please report this issue directly to Mesa developers via https://www.mesa3d.org/bugs.html
Comment 2 Philipp Verpoort 2020-03-07 11:52:41 UTC 
Updating to the latest Mesa driver resolved the issue for me.