In the following functions there is a locking issue, that is best described as a curious case of 'duplicate unlocks'.

file: gst/rtsp-server/rtsp-media.c
functions:
- gst_rtsp_media_get_retransmission_time
- gst_rtsp_media_get_latency
- gst_rtsp_media_is_time_provider

example:
guint
gst_rtsp_media_get_latency (GstRTSPMedia * media)
{
  GstRTSPMediaPrivate *priv;
  guint res;

  g_return_val_if_fail (GST_IS_RTSP_MEDIA (media), FALSE);

  priv = media->priv;

  g_mutex_unlock (&priv->lock); // <<<<<------ should be g_mutex_lock
  res = priv->latency;
  g_mutex_unlock (&priv->lock);

  return res;
}