[FFmpeg-trac] #9516(avfilter:new): libplacebo segfault on invocation
FFmpeg
trac at avcodec.org
Thu Nov 18 12:43:19 EET 2021
#9516: libplacebo segfault on invocation
-------------------------------------+-------------------------------------
Reporter: Dennis E. | Type: defect
Mungai |
Status: new | Priority: normal
Component: avfilter | Version: git-
| master
Keywords: libplacebo | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
'''Summary of the bug:'''
The filter libplacebo will segfault on any invocation.
How to reproduce:
The segfault was caught by gdb:
{{{
gdb --args /home/brainiarc7/ffmpeg_sources/FFmpeg/ffmpeg_g -init_hw_device
cuda=cuda:0 -filter_hw_device cuda -i feeds.mp4 -filter_complex
"[0:v]hwupload=derive_device=vulkan,libplacebo=w=1920:h=1080,hwupload=derive_device=cuda[s0]"
-map "[s0]" -c:v:0 h264_nvenc -map "0:a" -c:a copy -f mpegts cheek.ts
}}}
Output:
{{{
gdb /home/brainiarc7/ffmpeg_sources/FFmpeg/ffmpeg_g -init_hw_device
cuda=cuda:0 -filter_hw_device cuda -i feeds.mp4 -filter_complex
"[0:v]hwupload=derive_device=vulkan,libplacebo=w=1920:h=1080,hwupload=derive_device=cuda[s0]"
-map "[s0]" -c:v:0 h264_nvenc -map "0:a" -c:a copy -f mpegts cheek.ts
gdb: unrecognized option '-init_hw_device'
Use `gdb --help' for a complete list of options.
brainiarc7 at brainiarc7-P7xxTM1:~/Desktop/src$ gdb --args
/home/brainiarc7/ffmpeg_sources/FFmpeg/ffmpeg_g -init_hw_device
cuda=cuda:0 -filter_hw_device cuda -i feeds.mp4 -filter_complex
"[0:v]hwupload=derive_device=vulkan,libplacebo=w=1920:h=1080,hwupload=derive_device=cuda[s0]"
-map "[s0]" -c:v:0 h264_nvenc -map "0:a" -c:a copy -f mpegts cheek.ts
GNU gdb (Ubuntu 9.2-0ubuntu1~20.04) 9.2
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Reading symbols from /home/brainiarc7/ffmpeg_sources/FFmpeg/ffmpeg_g...
(gdb) run
Starting program: /home/brainiarc7/ffmpeg_sources/FFmpeg/ffmpeg_g
-init_hw_device cuda=cuda:0 -filter_hw_device cuda -i feeds.mp4
-filter_complex
\[0:v\]hwupload=derive_device=vulkan,libplacebo=w=1920:h=1080,hwupload=derive_device=cuda\[s0\]
-map \[s0\] -c:v:0 h264_nvenc -map 0:a -c:a copy -f mpegts cheek.ts
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
ffmpeg version N-104582-g85a6b7f7b7 Copyright (c) 2000-2021 the FFmpeg
developers
built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
configuration: --pkg-config-flags=--static --enable-static --disable-
shared --prefix=/home/brainiarc7 --bindir=/home/brainiarc7/bin --enable-
cuda-nvcc --enable-cuvid --enable-libnpp --extra-
cflags=-I/usr/local/cuda/include/ --extra-ldflags=-L/usr/local/cuda/lib64/
--enable-nvenc --enable-libass --enable-debug --enable-gpl --cpu=native
--enable-libfdk-aac --enable-libx264 --enable-libx265 --enable-openssl
--enable-librtmp --enable-libzvbi --enable-version3 --enable-opencl
--enable-pic --enable-librav1e --enable-libglslang --enable-vulkan
--enable-libsrt --enable-avisynth --enable-libsvtav1 --enable-libvpx
--enable-libplacebo --enable-librav1e --nvccflags='-gencode
arch=compute_75,code=sm_75 -O2' --extra-libs='-lpthread -lm -lz -ldl'
--enable-nonfree
libavutil 57. 9.100 / 57. 9.100
libavcodec 59. 13.100 / 59. 13.100
libavformat 59. 9.101 / 59. 9.101
libavdevice 59. 0.101 / 59. 0.101
libavfilter 8. 17.100 / 8. 17.100
libswscale 6. 1.100 / 6. 1.100
libswresample 4. 0.100 / 4. 0.100
libpostproc 56. 0.100 / 56. 0.100
[New Thread 0x7fffe573c000 (LWP 259774)]
[New Thread 0x7fffe4f3b000 (LWP 259775)]
[New Thread 0x7fffe1fff000 (LWP 259776)]
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'feeds.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf59.5.100
Duration: 01:00:02.13, start: 0.000000, bitrate: 13533 kb/s
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661),
yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, 13144
kb/s, 29.97 fps, 29.97 tbr, 30k tbn (default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
Stream #0:1[0x2](eng): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz,
5.1(side), fltp, 384 kb/s (default)
Metadata:
handler_name : SoundHandler
vendor_id : [0][0][0][0]
Side data:
audio service type: main
File 'cheek.ts' already exists. Overwrite? [y/N] y
[New Thread 0x7fffe17fe000 (LWP 259809)]
[New Thread 0x7fffe0ffd000 (LWP 259810)]
[New Thread 0x7fffbffff000 (LWP 259811)]
[New Thread 0x7fffbf7fe000 (LWP 259812)]
[New Thread 0x7fffbeffd000 (LWP 259813)]
[New Thread 0x7fffbe7fc000 (LWP 259814)]
[New Thread 0x7fffbdffb000 (LWP 259815)]
[New Thread 0x7fffbd7fa000 (LWP 259816)]
[New Thread 0x7fffbcff9000 (LWP 259817)]
[New Thread 0x7fffbc7f8000 (LWP 259818)]
[New Thread 0x7fffbbff7000 (LWP 259819)]
[New Thread 0x7fffbb7f6000 (LWP 259820)]
[New Thread 0x7fffbaff5000 (LWP 259821)]
[New Thread 0x7fffba7f4000 (LWP 259822)]
[New Thread 0x7fffb9ff3000 (LWP 259823)]
[New Thread 0x7fffb97f2000 (LWP 259824)]
Stream mapping:
Stream #0:0 (h264) -> hwupload
hwupload -> Stream #0:0 (h264_nvenc)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[New Thread 0x7fffb8ff1000 (LWP 259827)]
[New Thread 0x7fff7bfff000 (LWP 259828)]
[New Thread 0x7fff7b7fe000 (LWP 259829)]
[New Thread 0x7fff7affd000 (LWP 259830)]
[New Thread 0x7fff7a7fc000 (LWP 259831)]
[New Thread 0x7fff79ffb000 (LWP 259832)]
[New Thread 0x7fff797fa000 (LWP 259833)]
[New Thread 0x7fff78ff9000 (LWP 259834)]
[New Thread 0x7fff73fff000 (LWP 259835)]
[New Thread 0x7fff737fe000 (LWP 259836)]
[New Thread 0x7fff72ffd000 (LWP 259837)]
[New Thread 0x7fff727fc000 (LWP 259838)]
[New Thread 0x7fff71ffb000 (LWP 259839)]
[New Thread 0x7fff717fa000 (LWP 259840)]
[New Thread 0x7fff70ff9000 (LWP 259841)]
[New Thread 0x7fff707f8000 (LWP 259842)]
[New Thread 0x7fff6650a000 (LWP 259869)]
[New Thread 0x7fff65d09000 (LWP 259870)]
[New Thread 0x7fff65508000 (LWP 259871)]
[New Thread 0x7fff64d07000 (LWP 259872)]
[New Thread 0x7fff57fff000 (LWP 259873)]
[New Thread 0x7fff577fe000 (LWP 259874)]
[New Thread 0x7fff56ffd000 (LWP 259875)]
[New Thread 0x7fff567fc000 (LWP 259876)]
[New Thread 0x7fff55ffb000 (LWP 259877)]
[New Thread 0x7fff557fa000 (LWP 259878)]
[New Thread 0x7fff54ff9000 (LWP 259879)]
[New Thread 0x7fff33fff000 (LWP 259880)]
[New Thread 0x7fff2bfff000 (LWP 259881)]
[New Thread 0x7fff337fe000 (LWP 259882)]
[New Thread 0x7fff32ffd000 (LWP 259883)]
[New Thread 0x7fff327fc000 (LWP 259884)]
[New Thread 0x7fff31ffb000 (LWP 259885)]
[New Thread 0x7fff317fa000 (LWP 259886)]
[New Thread 0x7fff30ff9000 (LWP 259887)]
[New Thread 0x7fff2b7fe000 (LWP 259888)]
[New Thread 0x7fff2affd000 (LWP 259889)]
[New Thread 0x7fff2a7fc000 (LWP 259890)]
[New Thread 0x7fff29ffb000 (LWP 259891)]
[New Thread 0x7fff297fa000 (LWP 259892)]
[New Thread 0x7fff28ff9000 (LWP 259893)]
[New Thread 0x7ffef3fff000 (LWP 259894)]
[New Thread 0x7ffef37fe000 (LWP 259895)]
[New Thread 0x7ffef2ffd000 (LWP 259896)]
[New Thread 0x7ffef27fc000 (LWP 259897)]
[New Thread 0x7ffef1ffb000 (LWP 259898)]
[New Thread 0x7ffef17fa000 (LWP 259899)]
[New Thread 0x7ffef0ff9000 (LWP 259900)]
[New Thread 0x7ffed3fff000 (LWP 259901)]
[New Thread 0x7ffecbfff000 (LWP 259902)]
[New Thread 0x7ffed37fe000 (LWP 259903)]
[New Thread 0x7ffed2ffd000 (LWP 259904)]
[New Thread 0x7ffed27fc000 (LWP 259905)]
[New Thread 0x7ffed1ffb000 (LWP 259906)]
--Type <RET> for more, q to quit, c to continue without paging--
Thread 1 "ffmpeg_g" received signal SIGSEGV, Segmentation fault.
0x00005555568af99f in glslang::TScanContext::tokenizeIdentifier() ()
}}}
Warm regards,
Dennis.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9516>
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