memory leaks at ffmpeg6-1/libavutil/mem.c:105:9 in av_malloc in FFmpeg

[ZengYunxiang]

Summary of the bug:

Dear developers,
I found the following memory leaks on FFmpeg6.1 when using colorcorrect filter, please confirm.

The poc file(poc8ffmpeg) will be attached to this ticket.

How to reproduce:

git clone https://github.com/FFmpeg/FFmpeg.git ffmpeg6-1
cd ffmpeg6-1
git checkout 466799d
./configure --cc=clang --cxx=clang++ --ld=clang --enable-debug --toolchain=clang-asan
make -j30

./ffmpeg_g -y -i poc8ffmpeg -filter_complex colorcorrect tmp.mp4

ASAN Log:

=================================================================
==1141095==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 1024 byte(s) in 1 object(s) allocated from:
    #0 0x560cd4de6ab7 in __interceptor_posix_memalign (/afltest/ffmpeg6-1/ffmpeg_g+0x925ab7) (BuildId: 235e8d23658b9f137a6f44e3f2d1bddad7c9bf95)
    #1 0x560cd841f753 in av_malloc /afltest/ffmpeg6-1/libavutil/mem.c:105:9
    #2 0x560cd841f753 in av_mallocz /afltest/ffmpeg6-1/libavutil/mem.c:256:17
    #3 0x560cd841f753 in av_calloc /afltest/ffmpeg6-1/libavutil/mem.c:267:12
    #4 0x560cd4bde02f in config_input /afltest/ffmpeg6-1/libavfilter/vf_colorcorrect.c:461:21

Direct leak of 1024 byte(s) in 1 object(s) allocated from:
    #0 0x560cd4de6ab7 in __interceptor_posix_memalign (/afltest/ffmpeg6-1/ffmpeg_g+0x925ab7) (BuildId: 235e8d23658b9f137a6f44e3f2d1bddad7c9bf95)
    #1 0x560cd841f753 in av_malloc /afltest/ffmpeg6-1/libavutil/mem.c:105:9
    #2 0x560cd841f753 in av_mallocz /afltest/ffmpeg6-1/libavutil/mem.c:256:17
    #3 0x560cd841f753 in av_calloc /afltest/ffmpeg6-1/libavutil/mem.c:267:12
    #4 0x560cd4bddfc9 in config_input /afltest/ffmpeg6-1/libavfilter/vf_colorcorrect.c:457:21

SUMMARY: AddressSanitizer: 2048 byte(s) leaked in 2 allocation(s).

ffmpeg version:

# ./ffmpeg -version
ffmpeg version n6.1-3-g466799d4f5 Copyright (c) 2000-2023 the FFmpeg developers
built with clang version 9.0.0 (https://github.com/llvm-mirror/llvm c62b24f070c9a4bb1a76409e623042a740cac4cd)
configuration: --cc=clang --cxx=clang++ --ld=clang --enable-debug --toolchain=clang-asan
libavutil      58. 29.100 / 58. 29.100
libavcodec     60. 31.102 / 60. 31.102
libavformat    60. 16.100 / 60. 16.100
libavdevice    60.  3.100 / 60.  3.100
libavfilter     9. 12.100 /  9. 12.100
libswscale      7.  5.100 /  7.  5.100
libswresample   4. 12.100 /  4. 12.100

Credit:

Zeng Yunxiang
Song Jiaxuan

Thanks for your time!

[ZengYunxiang]

POC file