Subject: Re: [PATCH] kptr_restrict for hiding kernel pointers from
 unprivileged users
From: Dan Rosenberg <drosenberg@vsecurity.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org,
        netdev <netdev@vger.kernel.org>
In-Reply-To: <1291865039.2795.46.camel@edumazet-laptop>
References: <1291863926.2965.1.camel@Dan>
	 <1291865039.2795.46.camel@edumazet-laptop>
Content-Type: text/plain; charset="UTF-8"
Date: Thu, 09 Dec 2010 06:51:12 -0500
Message-ID: <1291895472.2965.4.camel@Dan>
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 818
Lines: 34


> 
> Thanks for not giving credits to people suggesting this idea to you
> (Thomas if I remember well), and not Ccing netdev where original
> discussion took place. 
> 

I am happy to credit Thomas, even though he is far from the first person
to have suggested this approach to me.  Thanks for the suggestion.

> 
> So caller can not block BH ?
> 
> This seems wrong to me, please consider :
> 
> normal process context :
> 
> spin_lock_bh() ...
> 
> for (...)  
> 	{xxx}printf( ...   "%pK"   ...)
> 
> spin_unlock_bh();
> 

I will think about this and address it.

-Dan

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/