Created attachment 147197 [details] Output of 'latte-dock --debug', interesting bits begin at line 368. SUMMARY Latte tasks causes Latte dock to crash due to a segmentation fault when closing VLC while audio is playing. This only seems to occur with VLC as testing with Dragon and ffplay yielded no crash. The segmentation fault backtrace isn't especially useful here as it happens internally in QtQuick not Latte. Compiling QtQuick with debugging causes the problem to be caught in src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp:3133 which then raises an abort signal before the segmentation fault occurs. In the log I've attached you can see on line 368 that before this occurs, something attempts to access a texture with a NULL address. (which probably causes the segfault when the debugging statements are disabled at compile time) STEPS TO REPRODUCE 1. Open a file that has an audio stream with VLC 2. Close the VLC window when the icon is popping up in latte-tasks (almost immediately, audio needs to be playing) (3. Sometimes this crash occurs even when closing VLC after several minutes of playback) NOTE: The steps above MAY not work consistently, but I haven't found a better way of triggering this crash more consistently. OBSERVED RESULT Latte tasks causes Latte dock to immediately crash due to a segmentation fault. EXPECTED RESULT Latte tasks handles the application termination normally. SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.15.0/5.24 KDE Plasma Version: 5.24.49 KDE Frameworks Version: 5.90 Qt Version: 5.15.2 ADDITIONAL INFORMATION Terminal output of 'latte-dock --debug' attached below.
Disable audio badges from Tasks advanced settings, does it crash?
(In reply to Michail Vourlakos from comment #1) > Disable audio badges from Tasks advanced settings, does it crash? Surprisingly enough, yes. The disabling/enabling the audio badges doesn't seem to have any effect on the crash.
Here is the segmentation fault backtrace from QtQuick when debugging is disabled at compile time in case it happens to be useful for some reason: #0 QSGTexture::setFiltering(QSGTexture::Filtering) (this=this@entry=0x0, filter=QSGTexture::Linear) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/coreapi/qsgtexture.cpp:576 #1 0x00007ffff7792e31 in QSGOpaqueTextureMaterialShader::updateState(QSGMaterialShader::RenderState const&, QSGMaterial*, QSGMaterial*) (this=this@entry=0x7fffb432e6f0, state=..., newEffect=newEffect@entry=0x7fffb41352f8, oldEffect=oldEffect@entry=0x0) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/util/qsgtexturematerial.cpp:90 #2 0x00007ffff77930d2 in QSGTextureMaterialShader::updateState(QSGMaterialShader::RenderState const&, QSGMaterial*, QSGMaterial*) (this=0x7fffb432e6f0, state=..., newEffect=0x7fffb41352f8, oldEffect=0x0) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/util/qsgtexturematerial.cpp:458 #3 0x00007ffff7779468 in QSGBatchRenderer::Renderer::renderMergedBatch(QSGBatchRenderer::Batch const*) (this=this@entry=0x7fffb4126e10, batch=0x7fffb4368a80) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp:3097 #4 0x00007ffff77801c0 in QSGBatchRenderer::Renderer::renderBatches() (this=this@entry=0x7fffb4126e10) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp:4066 #5 0x00007ffff778240f in QSGBatchRenderer::Renderer::render() (this=0x7fffb4126e10) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp:4363 #6 0x00007ffff77678c6 in QSGRenderer::renderScene(QSGBindable const&) (this=0x7fffb4126e10, bindable=...) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/coreapi/qsgrenderer.cpp:264 #7 0x00007ffff7767d9d in QSGRenderer::renderScene(unsigned int) (this=0x7fffb4126e10, fboId=<optimized out>) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/coreapi/qsgrenderer.cpp:212 #8 0x00007ffff77d0842 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) (this=0x555555fe2ad0, renderer=0x7fffb4126e10, fboId=0) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/qsgdefaultrendercontext.cpp:228 #9 0x00007ffff783e067 in QQuickWindowPrivate::renderSceneGraph(QSize const&, QSize const&) (this=this@entry=0x555555f1ebf0, size=..., surfaceSize=...) at qtdeclarative-5.15.2-r14/src/quick/items/qquickwindow.cpp:616 #10 0x00007ffff77df525 in QSGRenderThread::syncAndRender(QImage*) (this=this@entry=0x7fffec014630, grabImage=grabImage@entry=0x0) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/qsgthreadedrenderloop.cpp:837 #11 0x00007ffff77e3227 in QSGRenderThread::run() (this=0x7fffec014630) at qtdeclarative-5.15.2-r14/src/quick/scenegraph/qsgthreadedrenderloop.cpp:1043 #12 0x00007ffff571a962 in QThreadPrivate::start(void*) (arg=0x7fffec014630) at qtcore-5.15.2-r14/src/corelib/thread/qthread_unix.cpp:331 #13 0x00007ffff4cd2cde in start_thread () at /lib64/libpthread.so.0 #14 0x00007ffff526470f in clone () at /lib64/libc.so.6
Have you tried to clear your latte cache as proposed at: https://userbase.kde.org/LatteDock/HowToReportCrashes ?https://userbase.kde.org/LatteDock/HowToReportCrashes
(In reply to Michail Vourlakos from comment #4) > Have you tried to clear your latte cache as proposed at: > https://userbase.kde.org/LatteDock/HowToReportCrashes > ?https://userbase.kde.org/LatteDock/HowToReportCrashes Doesn't seem to have any effect.
this is not reproducable in my system... more info are needed and way to reproduce.... 1. What is your vlc version? 2. can you provide a video in google drive to demonstrate exactly how you make latte crash?
(In reply to Michail Vourlakos from comment #6) > this is not reproducable in my system... more info are needed and way to > reproduce.... > > 1. What is your vlc version? > 2. can you provide a video in google drive to demonstrate exactly how you > make latte crash? I'm running VLC 3.0.16. (you can see the output of vlc --version in the video) Here's a video of how you can create the crash https://files.catbox.moe/79ymhb.mp4. (test.mp4 was generated with ffmpeg containing a black background and a sine signal in the audio channel)
I have VLC 3.0.17.3 and I'm experiencing this behavior whenever a video in fullscreen mode ends and the player exits fullscreen. After a second or two, latte dock crashes with a seg fault.
*** This bug has been marked as a duplicate of bug 446874 ***