[FFmpeg-devel] [PATCH] avcodec/nvenc: fix NULL pointer dereference

[Zhao Zhili]

From: Zhao Zhili <zhilizhao at tencent.com>

This can happen if encoder init failed before setup the queue, then
reorder_queue_flush() is called by close().

Fix ticket #10221

Signed-off-by: Zhao Zhili <zhilizhao at tencent.com>
---
 libavcodec/nvenc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
index 8a28454042..dda2dc3ba1 100644
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -178,6 +178,8 @@ static void reorder_queue_flush(AVFifo *queue)
 {
     FrameData fd;
 
+    if (!queue)
+        return;
     while (av_fifo_read(queue, &fd, 1) >= 0)
         av_buffer_unref(&fd.frame_opaque_ref);
 }
-- 
2.25.1