netdev - Re: [IPSEC]: Don't warn if high-order hash resize fails

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Message-Id: <20070514.021746.17866513.davem@davemloft.net>
Date:	Mon, 14 May 2007 02:17:46 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	netdev@...r.kernel.org
Subject: Re: [IPSEC]: Don't warn if high-order hash resize fails

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Mon, 14 May 2007 17:39:41 +1000

> [IPSEC]: Check validity of direction in xfrm_policy_byid
> 
> The function xfrm_policy_byid takes a dir argument but finds the policy
> using the index instead.  We only use the dir argument to update the
> policy count for that direction.  Since the user can supply any value
> for dir, this can corrupt our policy count.
> 
> I know this is the problem because a few days ago I was deleting
> policies by hand using indicies and accidentally typed in the wrong
> direction.  It still deleted the policy and at the time I thought
> that was cool.  In retrospect it isn't such a good idea :)
> 
> I decided against letting it delete the policy anyway just in case
> we ever remove the connection between indicies and direction.
> 
> Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

Good spotting, patch applied, thanks!
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