[PATCH v3 1/6] tpm-buf: create new functions for handling TPM buffers

[James Bottomley]

On Mon, 2018-03-12 at 09:00 -0700, J Freyensee wrote:
> > 
> > +int tpm_buf_init(struct tpm_buf *buf, u16 tag, u32 ordinal)
> > +{
> > +	int rc;
> > +
> > +	rc = __tpm_buf_init(buf);
> 
> 
> Assuming that functions like tpm_buf_init() are the top-level API
> being defined in this patch, shouldn't it check if buf is valid
> before passing into the internal functions like __tpm_buf_init(buf)
> (maybe WARN()/BUG_ON()?).  Or does __tpm_buf_init(buf) do this check?

These are kernel internal APIs designed for on stack struct tpm_buf
usage, so I can't think of a viable threat model that would require
this type of checking ... do you have one?

James

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