netdev - Re: [PATCH -next] netrom: fix invalid use of sizeof in nr

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Message-ID: <20130409030905.GA2527@order.stressinduktion.org>
Date:	Tue, 9 Apr 2013 05:09:05 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Wei Yongjun <weiyj.lk@...il.com>
Cc:	ralf@...ux-mips.org, minipli@...glemail.com, davem@...emloft.net,
	yongjun_wei@...ndmicro.com.cn, linux-hams@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH -next] netrom: fix invalid use of sizeof in nr_recvmsg()

On Tue, Apr 09, 2013 at 10:07:19AM +0800, Wei Yongjun wrote:
> From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
> 
> sizeof() when applied to a pointer typed expression gives the size of the
> pointer, not that of the pointed data.
> Introduced by commit 3ce5ef(netrom: fix info leak via msg_name in nr_recvmsg)

I think it would be a good idea to enable -Wsizeof-pointer-memaccess
(gcc 4.8 feature) by default. While enabled there were no additional
warnings when I tested it some weeks ago. I will look into  this.

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