linux-kernel - Re: [PATCH] orinoco: Use shash instead of ahash for MIC calculations

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Message-ID: <87mvg0kqno.fsf@purkki.adurom.net>
Date:   Tue, 13 Dec 2016 13:35:39 +0200
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-wireless@...r.kernel.org, Eric Biggers <ebiggers3@...il.com>,
        linux-crypto@...r.kernel.org,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Stephan Mueller <smueller@...onox.de>
Subject: Re: [PATCH] orinoco: Use shash instead of ahash for MIC calculations

Andy Lutomirski <luto@...nel.org> writes:

> Eric Biggers pointed out that the orinoco driver pointed scatterlists
> at the stack.
>
> Fix it by switching from ahash to shash.  The result should be
> simpler, faster, and more correct.
>
> Cc: stable@...r.kernel.org # 4.9 only
> Reported-by: Eric Biggers <ebiggers3@...il.com>
> Signed-off-by: Andy Lutomirski <luto@...nel.org>

"more correct"? Does this fix a real user visible bug or what? And why
just stable 4.9, does this maybe have something to do with
CONFIG_VMAP_STACK?

I'm just wondering should I push this to 4.10 or -next. This is a driver
for ancient hardware so I'm starting to lean for -next.

-- 
Kalle Valo