linux-kernel - Re: [PATCH v2 5/6] net-PPP: Delete an unnecessary assignment in mppe

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Message-ID: <20141205122214.GB4912@mwanda>
Date:	Fri, 5 Dec 2014 15:22:14 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Paul Mackerras <paulus@...ba.org>, linux-ppp@...r.kernel.org,
	netdev@...r.kernel.org, Eric Dumazet <eric.dumazet@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH v2 5/6] net-PPP: Delete an unnecessary assignment in
 mppe_alloc()

On Thu, Dec 04, 2014 at 11:18:41PM +0100, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Thu, 4 Dec 2014 22:33:34 +0100
> 
> The data structure element "arc4" was assigned a null pointer by the
> mppe_alloc() function if a previous function call "crypto_alloc_blkcipher"
> failed.

No.  crypto_alloc_blkcipher() returns error pointers and not NULL.

This patch creates a bug.

regards,
dan carpenter


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