linux-kernel - Re: [PATCH 3.16 289/305] netfilter: x

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Message-ID: <20160813183048.GA17154@breakpoint.cc>
Date:	Sat, 13 Aug 2016 20:30:48 +0200
From:	Florian Westphal <fw@...len.de>
To:	Ben Hutchings <ben@...adent.org.uk>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	akpm@...ux-foundation.org, Florian Westphal <fw@...len.de>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH 3.16 289/305] netfilter: x_tables: validate targets of
 jumps

Ben Hutchings <ben@...adent.org.uk> wrote:
> 3.16.37-rc1 review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Florian Westphal <fw@...len.de>
> 
> commit 36472341017529e2b12573093cc0f68719300997 upstream.

[..]

> The extra overhead is negible, even with absurd cases.

Not true, the overhead is huge and increases restore time for
large rulesets from mere seconds to minutes, see

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f4dc77713f8016d2e8a3295e1c9c53a21f296def