linux-kernel - Re: [PATCH v2] net: ipv6: xfrm6

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Message-ID: <20180310094327.685d181d@epycfail>
Date:   Sat, 10 Mar 2018 09:43:27 +0100
From:   Stefano Brivio <sbrivio@...hat.com>
To:     Andreas Christoforou <andreaschristofo@...il.com>
Cc:     keescook@...omium.org, kernel-hardening@...ts.openwall.com,
        Steffen Klassert <steffen.klassert@...unet.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] net: ipv6: xfrm6_state: remove VLA usage

On Sat, 10 Mar 2018 09:40:44 +0200
Andreas Christoforou <andreaschristofo@...il.com> wrote:

> diff --git a/net/ipv6/xfrm6_state.c b/net/ipv6/xfrm6_state.c
> index b15075a..270a53a 100644
> --- a/net/ipv6/xfrm6_state.c
> +++ b/net/ipv6/xfrm6_state.c
> @@ -62,7 +62,7 @@ __xfrm6_sort(void **dst, void **src, int n, int (*cmp)(void *p), int maxclass)
>  {
>  	int i;
>  	int class[XFRM_MAX_DEPTH];
> -	int count[maxclass];
> +	int count[XFRM_MAX_DEPTH];
>  
>  	memset(count, 0, sizeof(count));

Can you perhaps initialize 'count' instead of calling memset(), now?

-- 
Stefano