https://bugs.kde.org/show_bug.cgi?id=421917
Bug ID: 421917
Summary: crashes on the 1st frame render.
Product: kamoso
Version: 3.2
Platform: Kubuntu Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: aleix...@kde.org
Reporter: maxim.yegorush...@gmail.com
Target Milestone: ---
SUMMARY
kamoso crashes on the first frame render.
STEPS TO REPRODUCE
Plug-in Logitech Brio camera. Start kamoso.
OBSERVED RESULT
kamoso crashes when trying to display the first frame, judging from the
stacktrace.
EXPECTED RESULT
kamoso doesn't crash.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 18.04.4 LTS, kernel 4.15.0-101-generic.
KDE Plasma Version: 5.12.9.
KDE Frameworks Version: 5.44.0.
Qt Version: 5.9.5.
ADDITIONAL INFORMATION
nvidia-driver-440, version 440.59-0ubuntu0.18.04.1.
cheese version 3.28.0-1ubuntu1 works with no issues.
obs-studio version 25.0.8-0obsproject1~bion works with no issues.
kamoso crashes.
gdb backtrace:
Starting program: /usr/bin/kamoso
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe4f49700 (LWP 19268)]
[New Thread 0x7fffdac06700 (LWP 19273)]
[New Thread 0x7fffda3b4700 (LWP 19274)]
[New Thread 0x7fffd228d700 (LWP 19275)]
[New Thread 0x7fffbc776700 (LWP 19276)]
[New Thread 0x7fffbbf24700 (LWP 19277)]
[New Thread 0x7fffbb6d2700 (LWP 19278)]
[New Thread 0x7fffbae80700 (LWP 19279)]
[New Thread 0x7fffba62e700 (LWP 19280)]
[New Thread 0x7fffb9ddc700 (LWP 19281)]
[New Thread 0x7fffb958a700 (LWP 19282)]
[New Thread 0x7fffb8d38700 (LWP 19283)]
[New Thread 0x7fff97fff700 (LWP 19284)]
[New Thread 0x7fff9759b700 (LWP 19285)]
[New Thread 0x7fff969b2700 (LWP 19293)]
Thread 15 "QSGRenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff9759b700 (LWP 19285)]
0x00000000400b0e71 in ?? ()
(gdb) bt
#0 0x00000000400b0e71 in ()
#1 0x00007fffa0e56593 in ()
#2 0x00007fff883c1c20 in ()
#3 0x00007fff9759a030 in ()
#4 0x0000000000000001 in ()
#5 0x00007fffd2cbe706 in () at
/usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.440.59
#6 0x00007fffd2cc92ea in () at
/usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.440.59
#7 0x00007fffd2e384f3 in () at
/usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.440.59
#8 0x00007fffd2e031e0 in () at
/usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.440.59
#9 0x00007fffd2e0d445 in () at
/usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.440.59
#10 0x00007fffd2e10f89 in () at
/usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.440.59
#11 0x00007fffd2e28027 in () at
/usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.440.59
#12 0x00007fffc1d184ac in VideoMaterial::bindTexture(int, unsigned char const*)
() at /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstqt5videosink.so
#13 0x00007fffc1d1862c in VideoMaterial::bind() () at
/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstqt5videosink.so
#14 0x00007fffc1d18bcd in
VideoMaterialShader::updateState(QSGMaterialShader::RenderState const&,
QSGMaterial*, QSGMaterial*) () at
/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstqt5videosink.so
#15 0x00007ffff5a5bdc7 in
QSGBatchRenderer::Renderer::renderMergedBatch(QSGBatchRenderer::Batch const*)
() at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007ffff5a5d00d in QSGBatchRenderer::Renderer::renderBatches() () at
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007ffff5a6285e in QSGBatchRenderer::Renderer::render() () at
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007ffff5a532a0 in QSGRenderer::renderScene(QSGBindable const&) () at
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007ffff5a5375b in QSGRenderer::renderScene(unsigned int) () at
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#20 0x00007ffff5a8daf0 in
QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at
/usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#21 0x00007ffff5aebb68 in QQuickWindowPrivate::renderSceneGraph(QSize const&)
() at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#22 0x00007ffff5a96bbc in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#23 0x00007ffff5a9bac8 in () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#24 0x00007ffff407817d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007ffff13036db in start_thread (arg=0x7fff9759b700) at
pthread_create.c:463
#26 0x00007ffff375b88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) info threads
Id Target Id Frame
1 Thread 0x7ffff7fa4800 (LWP 19264) "kamoso" 0x00007ffff374ebf9 in
__GI___poll (fds=0x5555565572d0, nfds=6, timeout=12) at
../sysdeps/unix/sysv/linux/poll.c:29
2 Thread 0x7fffe4f49700 (LWP 19268) "QXcbEventReader" 0x00007ffff374ebf9
in __GI___poll (fds=0x7fffe4f48ca8, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
3 Thread 0x7fffdac06700 (LWP 19273) "QDBusConnection" 0x00007ffff374ebf9
in __GI___poll (fds=0x7fffd4004db0, nfds=3, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
4 Thread 0x7fffda3b4700 (LWP 19274) "QQmlThread" 0x00007ffff374ebf9 in
__GI___poll (fds=0x7fffcc004660, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
5 Thread 0x7fffd228d700 (LWP 19275) "QQmlThread" 0x00007ffff374ebf9 in
__GI___poll (fds=0x7fffc8003ce0, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
6 Thread 0x7fffbc776700 (LWP 19276) "queue5:src" syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
7 Thread 0x7fffbbf24700 (LWP 19277) "queue4:src" syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
8 Thread 0x7fffbb6d2700 (LWP 19278) "queue0:src" syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
9 Thread 0x7fffbae80700 (LWP 19279) "queue2:src" syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
10 Thread 0x7fffba62e700 (LWP 19280) "viewfinderbin-q" syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
11 Thread 0x7fffb9ddc700 (LWP 19281) "queue1:src" syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
12 Thread 0x7fffb958a700 (LWP 19282) "preview-appsrc:" syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
13 Thread 0x7fffb8d38700 (LWP 19283) "queue3:src" syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
14 Thread 0x7fff97fff700 (LWP 19284) "v4l2src0:src" 0x00007ffff374ecf6 in
__GI_ppoll (fds=0x7fff900151a0, nfds=2, timeout=<optimised out>, sigmask=0x0)
at ../sysdeps/unix/sysv/linux/ppoll.c:39
* 15 Thread 0x7fff9759b700 (LWP 19285) "QSGRenderThread" 0x00000000400b0e71
in ?? ()
16 Thread 0x7fff969b2700 (LWP 19293) "pool" syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
(gdb) q
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