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From: Nuo Mi <nuomi2021@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Cc: Frank Plowman <post@frankplowman.com>, Nuo Mi <nuomi2021@gmail.com>
Subject: [FFmpeg-devel] [PATCH] avcodec/vvcdec: frame_context_setup, set fc->ref to NULL
Date: Tue, 13 Feb 2024 10:30:02 +0800
Message-ID: <TYSPR06MB6433F9226219F0908FBD3D45AA4F2@TYSPR06MB6433.apcprd06.prod.outlook.com> (raw)

fc->ref points to an old VVCFrame, which cannot be used after frame_context_setup.
This prevents crashes in decode_nal_units-->ff_vvc_report_frame_finished.

Signed-off-by: Frank Plowman <post@frankplowman.com>
---
 libavcodec/vvc/vvcdec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/vvc/vvcdec.c b/libavcodec/vvc/vvcdec.c
index 8163b5ecb6..e88e746de4 100644
--- a/libavcodec/vvc/vvcdec.c
+++ b/libavcodec/vvc/vvcdec.c
@@ -594,6 +594,8 @@ static int frame_context_setup(VVCFrameContext *fc, VVCContext *s)
 {
     int ret;
 
+    fc->ref = NULL;
+
     // copy refs from the last frame
     if (s->nb_frames && s->nb_fcs > 1) {
         VVCFrameContext *prev = get_frame_context(s, fc, -1);
-- 
2.25.1

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             reply	other threads:[~2024-02-13  2:30 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-13  2:30 Nuo Mi [this message]
2024-02-13 10:38 ` Frank Plowman
2024-02-14  4:17   ` Nuo Mi
2024-02-14 11:12   ` Anton Khirnov

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