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avfilter/opencl: Fix program_opencl for source code larger than 64kB

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The condition (pos < len) is always true and the
rest of the OpenCL program code would not be read, while
the maximum number of "rb" is "len - pos - 1", and then, the
maximum number of the "pos" is "len - 1".

Fixes: trac.ffmpeg.org/ticket/9217
This commit is contained in:
Tsutomu Seki 2021-05-06 14:13:15 +09:00 committed by Paul B Mahol
parent 5bcc61ce87
commit 9b445663a5
1 changed files with 1 additions and 1 deletions
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2
libavfilter/opencl.c
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@ -242,7 +242,7 @@ int ff_opencl_filter_load_program_from_file(AVFilterContext *avctx,
goto fail; goto fail;
} }
pos += rb; pos += rb;
if (pos < len) if (pos + 1 < len)
break; break;
len <<= 1; len <<= 1;
err = av_reallocp(&src, len); err = av_reallocp(&src, len);