From a30adf9f96254f4870066c98a6dbf13fc74515a3 Mon Sep 17 00:00:00 2001
From: Paul B Mahol <onemda@gmail.com>
Date: Mon, 27 Nov 2023 13:04:16 +0100
Subject: [PATCH] avfilter/framesync: fix OOM case

Fixes OOM when caller keeps adding frames into filtergraph
that reached EOF by other means, for example EOF is signalled
by other filter in filtergraph or by buffersink.
---
 libavfilter/framesync.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavfilter/framesync.c b/libavfilter/framesync.c
index 6cb4b21fed..23681b5183 100644
--- a/libavfilter/framesync.c
+++ b/libavfilter/framesync.c
@@ -354,8 +354,11 @@ static int consume_from_fifos(FFFrameSync *fs)
 
 int ff_framesync_activate(FFFrameSync *fs)
 {
+    AVFilterContext *ctx = fs->parent;
     int ret;
 
+    FF_FILTER_FORWARD_STATUS_BACK_ALL(ctx->outputs[0], ctx);
+
     ret = framesync_advance(fs);
     if (ret < 0)
         return ret;