> 2020年10月19日 上午10:07，javashu2...@gmail.com 写道：
>
> From: bevis <javashu2...@gmail.com>
>
> During operation, the user exits and interrupts, causing pls->segment to be
> released, resulting in a null pointer crash
>
> Signed-off-by: bevis <javashu2...@gmail.com>
> ---
> libavformat/hls.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/libavformat/hls.c b/libavformat/hls.c
> index 72e28ab94f..0a522a4595 100644
> --- a/libavformat/hls.c
> +++ b/libavformat/hls.c
> @@ -1979,17 +1979,18 @@ static int hls_read_header(AVFormatContext *s)
> pls->ctx->interrupt_callback = s->interrupt_callback;
> url = av_strdup(pls->segments[0]->url);
> ret = av_probe_input_buffer(&pls->pb, &in_fmt, url, NULL, 0, 0);
> - av_free(url);
> if (ret < 0) {
> /* Free the ctx - it isn't initialized properly at this point,
> * so avformat_close_input shouldn't be called. If
> * avformat_open_input fails below, it frees and zeros the
> * context, so it doesn't need any special treatment like this. */
> - av_log(s, AV_LOG_ERROR, "Error when loading first segment
> '%s'\n", pls->segments[0]->url);
> + av_log(s, AV_LOG_ERROR, "Error when loading first segment
> '%s'\n", url);
> avformat_free_context(pls->ctx);
> pls->ctx = NULL;
> + av_free(url);
> goto fail;
> }
> + av_free(url);
> pls->ctx->pb = &pls->pb;
> pls->ctx->io_open = nested_io_open;
> pls->ctx->flags |= s->flags & ~AVFMT_FLAG_CUSTOM_IO;
> --
> 2.21.1 (Apple Git-122.3)
>
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Applied
Thanks
Steven Liu
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