nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags)
{
	struct nfs_server *server = NFS_SERVER(lgp->args.inode);
	size_t max_pages = max_response_pages(server);
	struct rpc_task *task;
	struct rpc_message msg = {
		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
		.rpc_argp = &lgp->args,
		.rpc_resp = &lgp->res,
	};
	struct rpc_task_setup task_setup_data = {
		.rpc_client = server->client,
		.rpc_message = &msg,
		.callback_ops = &nfs4_layoutget_call_ops,
		.callback_data = lgp,
		.flags = RPC_TASK_ASYNC,
	};
	struct pnfs_layout_segment *lseg = NULL;
	int status = 0;

	dprintk("--> %s\n", __func__);

	lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags);
	if (!lgp->args.layout.pages) {
		nfs4_layoutget_release(lgp);
		return ERR_PTR(-ENOMEM);
	}
	lgp->args.layout.pglen = max_pages * PAGE_SIZE;

	lgp->res.layoutp = &lgp->args.layout;
	lgp->res.seq_res.sr_slot = NULL;
	nfs41_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0);
	task = rpc_run_task(&task_setup_data);
	if (IS_ERR(task))
		return ERR_CAST(task);
	status = nfs4_wait_for_completion_rpc_task(task);
	if (status == 0)
		status = task->tk_status;
	if (status == 0)
		lseg = pnfs_layout_process(lgp);
	rpc_put_task(task);
	dprintk("<-- %s status=%d\n", __func__, status);
	if (status)
		return ERR_PTR(status);
	return lseg;
}

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.