netdev - Re: shutdown oops in xt_compat_calc

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Message-ID: <20110406074047.GE32579@Chamillionaire.breakpoint.cc>
Date:	Wed, 6 Apr 2011 09:40:47 +0200
From:	Florian Westphal <fw@...len.de>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Florian Westphal <fw@...len.de>, Patrick McHardy <kaber@...sh.net>,
	dann frazier <dannf@...nf.org>, netdev@...r.kernel.org,
	"netfilter-devel@...r.kernel.org" <netfilter-devel@...r.kernel.org>
Subject: Re: shutdown oops in xt_compat_calc_jump

Eric Dumazet <eric.dumazet@...il.com> wrote:
> Le mercredi 06 avril 2011 à 01:42 +0200, Florian Westphal a écrit :
> 
> > using ninfo->nentries does not always work because ebtables compat
> > can call xt_compat_add_offset() more than once per entry.
> > 
> 
> With same offset ? Maybe we should tweak xt_compat_add_offset() to
> detect this and add delta to previous delta in this case

No, different offset (it calls it per match/watcher/target instead
of summing up the match/target deltas and using that in a single
add_offset call).
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