jpegdec: Check return value of gst_buffer_map()

Without this check, the element will crash instead of returning an
error.

1 files changed, 10 insertions, 1 deletions

diff --git a/ext/jpeg/gstjpegdec.c b/ext/jpeg/gstjpegdec.c
index 544216846..aa868359c 100644
--- a/ext/jpeg/gstjpegdec.c
+++ b/ext/jpeg/gstjpegdec.c
@@ -1204,7 +1204,9 @@ gst_jpeg_dec_handle_frame (GstVideoDecoder * bdec, GstVideoCodecFrame * frame)
   guint8 *data;
   gsize nbytes;
 
-  gst_buffer_map (frame->input_buffer, &dec->current_frame_map, GST_MAP_READ);
+  if (!gst_buffer_map (frame->input_buffer, &dec->current_frame_map,
+          GST_MAP_READ))
+    goto map_failed;
 
   data = dec->current_frame_map.data;
   nbytes = dec->current_frame_map.size;
@@ -1393,6 +1395,13 @@ need_more_data:
     goto exit;
   }
   /* ERRORS */
+map_failed:
+  {
+    GST_ELEMENT_ERROR (dec, RESOURCE, READ, (_("Failed to read memory")),
+        ("gst_buffer_map() failed for READ access"));
+    ret = GST_FLOW_ERROR;
+    goto exit;
+  }
 decode_error:
   {
     gchar err_msg[JMSG_LENGTH_MAX];