[FFmpeg-cvslog] buffersrc: fix invalid read in uninit if the fifo hasn't been allocated

[Anton Khirnov]

ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Sun May  6 07:14:01 2012 +0200| [8b05e13df3b25e186adaf19cf84f5fa93d829214] | committer: Anton Khirnov

buffersrc: fix invalid read in uninit if the fifo hasn't been allocated

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8b05e13df3b25e186adaf19cf84f5fa93d829214
---

 libavfilter/buffersrc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/buffersrc.c b/libavfilter/buffersrc.c
index 1ace368..c7284c1 100644
--- a/libavfilter/buffersrc.c
+++ b/libavfilter/buffersrc.c
@@ -137,7 +137,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
 static av_cold void uninit(AVFilterContext *ctx)
 {
     BufferSourceContext *s = ctx->priv;
-    while (av_fifo_size(s->fifo)) {
+    while (s->fifo && av_fifo_size(s->fifo)) {
         AVFilterBufferRef *buf;
         av_fifo_generic_read(s->fifo, &buf, sizeof(buf), NULL);
         avfilter_unref_buffer(buf);