linux-kernel - Re: [PATCH v3 0/7] crypto: x86: Fix indirect function call casts

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Date:   Thu, 9 May 2019 09:39:06 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Kees Cook <keescook@...omium.org>
Cc:     Eric Biggers <ebiggers@...nel.org>,
        Joao Moreira <jmoreira@...e.de>,
        Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...en8.de>, X86 ML <x86@...nel.org>,
        linux-crypto <linux-crypto@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Kernel Hardening <kernel-hardening@...ts.openwall.com>
Subject: Re: [PATCH v3 0/7] crypto: x86: Fix indirect function call casts

On Wed, May 08, 2019 at 02:08:25PM -0700, Kees Cook wrote:
>
> For example, quoting the existing code:
> 
> asmlinkage void twofish_dec_blk(struct twofish_ctx *ctx, u8 *dst,
>                                 const u8 *src);

So just make it

	asmlinkage void twofish_dec_blk(void *ctx, u8 *dst, const u8 *src);

and you won't need any of these casts.

Cheers,
-- 
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