[FFmpeg-trac] #9082(avcodec:new): Memory leak while trancoding on GPU

[FFmpeg]

#9082: Memory leak while trancoding on GPU
------------------------------------+-----------------------------------
             Reporter:  misko       |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+-----------------------------------

Comment (by misko):

 Well ... with toolchain=gcc-asan enabled it doesn't work at all. I get
 this weird CUDA error:

 {{{
 ffmpeg version N-99167-g022a12b306 Copyright (c) 2000-2020 the FFmpeg
 developers
   built with gcc 8 (Debian 8.3.0-6)
   configuration: --prefix=/opt/ffmpeg --enable-cuvid --enable-nvenc
 --enable-libfdk-aac --enable-nonfree --enable-gpl --enable-libnpp
 --enable-cuda --enable-cuda-nvcc --extra-cflags=-I/usr/local/cuda/include
 --extra-ldflags=-L/usr/local/cuda/lib64 --nvccflags='-gencode
 arch=compute_60,code=sm_60 -O2' --toolchain=gcc-asan
   libavutil      56. 59.100 / 56. 59.100
   libavcodec     58.106.100 / 58.106.100
   libavformat    58. 56.100 / 58. 56.100
   libavdevice    58. 11.102 / 58. 11.102
   libavfilter     7. 87.100 /  7. 87.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   libpostproc    55.  8.100 / 55.  8.100
 [AVHWDeviceContext @ 0x6090000004c0] cu->cuInit(0) failed ->
 CUDA_ERROR_OUT_OF_MEMORY: out of memory
 Device creation failed: -1313558101.
 Failed to set value 'cuda=cuda:1' for option 'init_hw_device': Unknown
 error occurred
 Error parsing global options: Unknown error occurred

 =================================================================
 ==8292==ERROR: LeakSanitizer: detected memory leaks

 Direct leak of 65536 byte(s) in 1 object(s) allocated from:
     #0 0x7fa5b4afb720 in __interceptor_realloc (/lib/x86_64-linux-
 gnu/libasan.so.5+0xe9720)
     #1 0x7fa5acc9ecff  (/opt/ffmpeg-asan/ffmpeg_g+0xd0f0cff)

 Direct leak of 264 byte(s) in 1 object(s) allocated from:
     #0 0x7fa5b4afb518 in calloc (/lib/x86_64-linux-
 gnu/libasan.so.5+0xe9518)
     #1 0x7fa5ace058ba  (/opt/ffmpeg-asan/ffmpeg_g+0xd2578ba)

 Direct leak of 128 byte(s) in 1 object(s) allocated from:
     #0 0x7fa5b4afb518 in calloc (/lib/x86_64-linux-
 gnu/libasan.so.5+0xe9518)
     #1 0x7fa5acc9f12f  (/opt/ffmpeg-asan/ffmpeg_g+0xd0f112f)

 Direct leak of 64 byte(s) in 2 object(s) allocated from:
     #0 0x7fa5b4afb330 in __interceptor_malloc (/lib/x86_64-linux-
 gnu/libasan.so.5+0xe9330)
     #1 0x7fa5acc8b081  (/opt/ffmpeg-asan/ffmpeg_g+0xd0dd081)

 Direct leak of 8 byte(s) in 1 object(s) allocated from:
     #0 0x7fa5b4afb518 in calloc (/lib/x86_64-linux-
 gnu/libasan.so.5+0xe9518)
     #1 0x7fa5acc9f0bf  (/opt/ffmpeg-asan/ffmpeg_g+0xd0f10bf)

 Indirect leak of 640 byte(s) in 2 object(s) allocated from:
     #0 0x7fa5b4afb518 in calloc (/lib/x86_64-linux-
 gnu/libasan.so.5+0xe9518)
     #1 0x7fa5acc8b09c  (/opt/ffmpeg-asan/ffmpeg_g+0xd0dd09c)

 SUMMARY: AddressSanitizer: 66640 byte(s) leaked in 8 allocation(s).
 }}}

 I don't know if I'm doing this the proper way.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/9082#comment:6>
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