Maximum call stack size exceeded]

I am using node.js v0.10.32 on ubuntu 14.04.1 and trying and use aws-sdk(2.0.18) to upload (and download) a file from S3. But the following error shows up when uploading a large file, say 32MB.

(node) warning: Recursive process.nextTick detected. This will break in the next version of node. Please use setImmediate for recursive deferral.
...
(node) warning: Recursive process.nextTick detected. This will break in the next version of node. Please use setImmediate for recursive deferral.
RangeError: Maximum call stack size exceeded

I tried to make stack size larger with node --stack-size=16384 ... but no luck.
Here is my uploader source code:

if (process.argv.length < 7) {
    console.log ("usage: " + process.argv [0] + " " + process.argv[1] + "     ")
    return -1
}

var config = process.argv[2]
var region = process.argv[3]
var bucketName = process.argv[4]
var key = process.argv[5]
var file = process.argv[6]

var fs = require ('fs')
var aws = require ('aws-sdk')
fs.readFile (config, "utf8", function (err, configFile) {
    if (err) {
        console.log ("Config file cannot be read: ", err)
        return -1
    }
    aws.config = JSON.parse (configFile)
    aws.config.region = region

    var bucket = new aws.S3 ({params: {Bucket: bucketName}})

    fs.readFile (file, function (err, fileData) {
        if (err) {
            console.log ("Cannot open file for uploading: ", err);
        } else {
            bucket.createBucket (function () {
                var data = {Key: key, Body: fileData}
                bucket.putObject (data, function (err, data) {
                    if (err) {
                        console.log ("Error uploading data: ", err);
                    } else {
                        console.log ("Successfully uploaded!");
                    }
                })
            })
        }
    })
})

I am no idea now, please help.
Maybe aws’s multipart upload is the solution for uploading large files?