[FFmpeg-devel] [PATCH] avfilter/af_pan: fix null pointer dereference on empty token

[Marton Balint]

Fixes Coverity CID 1396254.

Signed-off-by: Marton Balint <cus at passwd.hu>
---
 libavfilter/af_pan.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavfilter/af_pan.c b/libavfilter/af_pan.c
index 94f1587..00eef2b 100644
--- a/libavfilter/af_pan.c
+++ b/libavfilter/af_pan.c
@@ -115,6 +115,11 @@ static av_cold int init(AVFilterContext *ctx)
     if (!args)
         return AVERROR(ENOMEM);
     arg = av_strtok(args, "|", &tokenizer);
+    if (!arg) {
+        av_log(ctx, AV_LOG_ERROR, "Cannot tokenize argument\n");
+        ret = AVERROR(EINVAL);
+        goto fail;
+    }
     ret = ff_parse_channel_layout(&pan->out_channel_layout,
                                   &pan->nb_output_channels, arg, ctx);
     if (ret < 0)
-- 
2.10.2