linux-kernel - Re: [kernel-hardening] Re: Add overflow protection to kref

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Message-ID: <20120217233908.GA24047@dztty>
Date:	Sat, 18 Feb 2012 00:39:08 +0100
From:	Djalal Harouni <tixxdz@...ndz.org>
To:	Vasiliy Kulikov <segoon@...nwall.com>
Cc:	kernel-hardening@...ts.openwall.com,
	Kees Cook <keescook@...omium.org>,
	Ubuntu security discussion <ubuntu-hardened@...ts.ubuntu.com>,
	linux-kernel@...r.kernel.org, David Windsor <dwindsor@...il.com>,
	pageexec@...email.hu, spender@...ecurity.net
Subject: Re: [kernel-hardening] Re: Add overflow protection to kref

On Fri, Feb 17, 2012 at 11:37:19PM +0400, Vasiliy Kulikov wrote:
> pattern, otherwise it is not a true refcounter :)  It should be straightforward to
> move to kref.
> 
> 
> Moving to atomic64_t is attractive, but:
> 
> 1) we still should find all atomic_t refcounters.  Why not move to kref then?
> 
> 2) what to do with architectures-loosers?
There is lib/atomic64.c but with a static hashed array of raw_spinlocks.

> 
> Thanks,
> 
> -- 
> Vasiliy Kulikov
> http://www.openwall.com - bringing security into open computing environments
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