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

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Message-ID: <1291898801.2965.6.camel@Dan>
Date:	Thu, 09 Dec 2010 07:46:41 -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


> > 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.

Would you be happier if I omitted the in_interrupt() check entirely?

-Dan

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