diff --git a/drivers/media/platform/msm/ais/isp/msm_isp47.c b/drivers/media/platform/msm/ais/isp/msm_isp47.c
index 9cd367925314..6ca91b4fcf83 100644
--- a/drivers/media/platform/msm/ais/isp/msm_isp47.c
+++ b/drivers/media/platform/msm/ais/isp/msm_isp47.c
@@ -1097,8 +1097,10 @@ int msm_vfe47_start_fetch_engine_multi_pass(struct vfe_device *vfe_dev,
 			fe_cfg->stream_id);
 		vfe_dev->fetch_engine_info.bufq_handle = bufq_handle;
 
+		mutex_lock(&vfe_dev->buf_mgr->lock);
 		rc = vfe_dev->buf_mgr->ops->get_buf_by_index(
 			vfe_dev->buf_mgr, bufq_handle, fe_cfg->buf_idx, &buf);
+		mutex_unlock(&vfe_dev->buf_mgr->lock);
 		if (rc < 0 || !buf) {
 			pr_err("%s: No fetch buffer rc= %d buf= %pK\n",
 				__func__, rc, buf);