linux-kernel - Re: [PATCH] crypto: testmgr - reduce stack usage in fuzzers

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Message-ID: <20190617145624.p6alck5m6bqaswgp@gondor.apana.org.au>
Date:   Mon, 17 Jun 2019 22:56:24 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Kees Cook <keescook@...omium.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Biggers <ebiggers@...gle.com>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Vitaly Chikunov <vt@...linux.org>,
        Gilad Ben-Yossef <gilad@...yossef.com>,
        "open list:HARDWARE RANDOM NUMBER GENERATOR CORE" 
        <linux-crypto@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] crypto: testmgr - reduce stack usage in fuzzers

On Mon, Jun 17, 2019 at 04:54:16PM +0200, Arnd Bergmann wrote:
>
> Just converting the three testvec_config variables is what I originally
> had in my patch. It got some configurations below the warning level,
> but some others still had the problem. I considered sending two
> separate patches, but as the symptom was the same, I just folded
> it all into one patch that does the same thing in four functions.

Just curious, how bad is it with only moving testvec_config off
the stack?

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