The srcpads_ vector is protected by two different locks, the GstObject lock of the libcamerasrc element, and the stream_lock that covers the run function of the thread. This isn't correct. Use the stream_lock consistently to protect the pads. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>