netdev - Re: [PATCH] kptr_restrict for hiding kernel pointers from unprivileged users

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Message-ID: <1291949118.1877.2.camel@dan>
Date:	Thu, 09 Dec 2010 21:45:18 -0500
From:	Dan Rosenberg <drosenberg@...curity.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] kptr_restrict for hiding kernel pointers from
 unprivileged users


> 
> Well, it seems difficult to make a check here, its a generic function
> that happens to be used from different contexts.
> 
> Even using in_irq() might be a problem.

I agree it seems difficult - my only goal was to prevent subsequent
breakage with the capability check.  Does anyone have any suggestions
for a better approach here?

-Dan

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