_nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
{
	struct inode *inode;
	struct nfs4_state *state = NULL;
	int ret;

	if (!data->rpc_done) {
		state = nfs4_try_open_cached(data);
		goto out;
	}

	ret = -EAGAIN;
	if (!(data->f_attr.valid & NFS_ATTR_FATTR))
		goto err;
	inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
	ret = PTR_ERR(inode);
	if (IS_ERR(inode))
		goto err;
	ret = -ENOMEM;
	state = nfs4_get_open_state(inode, data->owner);
	if (state == NULL)
		goto err_put_inode;
	if (data->o_res.delegation_type != 0)
		nfs4_opendata_check_deleg(data, state);
	update_open_stateid(state, &data->o_res.stateid, NULL,
			data->o_arg.fmode);
	iput(inode);
out:
	return state;
err_put_inode:
	iput(inode);
err:
	return ERR_PTR(ret);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.