linux-kernel - Re: [PATCH 10/11] ah6: fix error return code

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Message-ID: <20150824121312.GA30248@gondor.apana.org.au>
Date:	Mon, 24 Aug 2015 20:13:12 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Julia Lawall <Julia.Lawall@...6.fr>
Cc:	Steffen Klassert <steffen.klassert@...unet.com>,
	kernel-janitors@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 10/11] ah6: fix error return code

On Sun, Aug 23, 2015 at 02:11:21AM +0200, Julia Lawall wrote:
> Return a negative error code on failure.
> 
> A simplified version of the semantic match that finds this problem is as
> follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> identifier ret; expression e1,e2;
> @@
> (
> if (\(ret < 0\|ret != 0\))
>  { ... return ret; }
> |
> ret = 0
> )
> ... when != ret = e1
>     when != &ret
> *if(...)
> {
>   ... when != ret = e2
>       when forall
>  return ret;
> }
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

Acked-by: Herbert Xu <herbert@...dor.apana.org.au>

This problem exists in net/ipv4/ah4.c too, right?

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
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