[dm-devel] [PATCH v4 11/14] treewide: Prepare to remove VLA usage for AHASH_REQUEST_ON_STACK

[Herbert Xu]

On Thu, Jul 12, 2018 at 10:17:29PM -0700, Kees Cook wrote:
>
> Then why does the instrumented tcrypt output show the huge size? Is
> tcrypt doing something incorrectly?

tcrypt doesn't even use AHASH_REQUEST_ON_STACK so I don't understand
your point.

> What is the correct value to use for AHASH_REQUEST_ON_STACK?

As I said to arrive at a fixed value you should examine all sync
ahash algorithms (e.g., all shash ones plus ahash ones marked as
sync if there are any).

Cheers,
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt