**Do you want to request a _feature_ or report a _bug_?**

This is a bug

**What is the current behavior?**

![screen shot 2016-07-03 at 4 12 19 pm](https://cloud.githubusercontent.com/assets/1697380/16544656/b3f896b2-4140-11e6-923a-06fc630c92df.png)
![screen shot 2016-07-03 at 4 11 15 pm](https://cloud.githubusercontent.com/assets/1697380/16544657/b3f8f292-4140-11e6-8b03-0ecaa3165460.png)

**If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem via https://jsfiddle.net or similar (template: https://jsfiddle.net/reactjs/69z2wepo/).**

Using 15.2.0 react and react-dom

**What is the expected behavior?**

![screen shot 2016-07-03 at 4 13 05 pm](https://cloud.githubusercontent.com/assets/1697380/16544659/b938951e-4140-11e6-9275-2c3721542003.png)
![screen shot 2016-07-03 at 4 13 10 pm](https://cloud.githubusercontent.com/assets/1697380/16544660/b9391278-4140-11e6-9951-0f81024ce859.png)

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

In 15.2.0, extra attributes `name` and `value` with empty values are added to the submit button of a form.

It works in 15.1.0.

'Input elements must be either controlled or uncontrolled ' +
          '(specify either the value prop, or the defaultValue prop, but not ' +
          'both). Decide between using a controlled or uncontrolled input ' +
          'element and remove one of these props. More info: ' +
          'https:fb.me/react-controlled-components',
        getCurrentFiberOwnerNameInDevOrNull() || 'A component',
        props.type,
      );
      didWarnValueDefaultValue = true;
    }
  }
  const node = ((element: any): InputWithWrapperState);
  const defaultValue = props.defaultValue == null ? '' : props.defaultValue;
  node._wrapperState = {
    initialChecked:
      props.checked != null ? props.checked : props.defaultChecked,
    initialValue: getToStringValue(
      props.value != null ? props.value : defaultValue,
    ),
    controlled: isControlled(props),
  };
}
export function updateChecked(element: Element, props: Object) {
  const node = ((element: any): InputWithWrapperState);
  const checked = props.checked;
  if (checked != null) {
    DOMPropertyOperations.setValueForProperty(node, 'checked', checked, false);
  }
}
export function updateWrapper(element: Element, props: Object) {