RE: [PATCH v6 3/5] crypto: tegra: Add Tegra Security Engine driver

[Akhil R]

> On Tue, Mar 19, 2024 at 01:53:04PM +0530, Akhil R wrote:
> >
> > +struct tegra_sha_reqctx {
> > +     struct ahash_request fallback_req;
> 
> This doesn't work because ahash_request is dynamically sized.
> So you'll end up clobbering the rest of the struct if a fallback ends up being used.
> 
> You should place the fallback_req at the end of the reqctx and set the reqsize
> based on the fallback reqsize.
> 
Should I set the reqsize as below in sha_cra_init()? Seeing this in other crypto drivers.

        crypto_ahash_set_reqsize(ahash_tfm,
                        sizeof(struct tegra_sha_reqctx) +
                        crypto_ahash_reqsize(ctx->fallback_tfm));

Regards,
Akhil