From: Florian Westphal <fw@strlen.de>
To: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Florian Westphal <fw@strlen.de>,
netfilter-devel@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH nf-next 5/9] netfilter: conntrack: small refactoring of conntrack seq_printf
Date: Wed, 4 May 2016 00:27:36 +0200 [thread overview]
Message-ID: <20160503222736.GK2395@breakpoint.cc> (raw)
In-Reply-To: <20160503181250.GA4508@salvia>
Pablo Neira Ayuso <pablo@netfilter.org> wrote:
> > - if (NF_CT_DIRECTION(hash))
> > - goto release;
> > - if (nf_ct_l3num(ct) != AF_INET)
> > + /* check if we raced w. object reuse */
> > + if (!nf_ct_is_confirmed(ct) ||
>
> This refactoring includes this new check, is this intentional?
Hmm, yes and no.
I should have put it in an extra commit :-/
Without this, we might erronously print a conntrack that is NEW
and which isn't confirmed yet.
We won't crash since seq_print doesn't depend on extensions being
set up properly, but it seems better to only display those conntracks
that are part of the conntrack hash table (i.e., have the confirmed bit
set).
Let me know if you want me to respin this as a separate fix, thanks!
next prev parent reply other threads:[~2016-05-03 22:27 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-28 17:13 [PATCH nf-next 0/9] netfilter: remove per-netns conntrack tables, part 1 Florian Westphal
2016-04-28 17:13 ` [PATCH nf-next 1/9] netfilter: conntrack: keep BH enabled during lookup Florian Westphal
2016-04-28 17:13 ` [PATCH nf-next 2/9] netfilter: conntrack: fix lookup race during hash resize Florian Westphal
2016-04-28 17:13 ` [PATCH nf-next 3/9] netfilter: conntrack: don't attempt to iterate over empty table Florian Westphal
2016-05-03 17:03 ` Pablo Neira Ayuso
2016-05-03 17:17 ` Florian Westphal
2016-05-03 17:41 ` Pablo Neira Ayuso
2016-05-03 17:55 ` Florian Westphal
2016-05-03 22:27 ` Pablo Neira Ayuso
2016-04-28 17:13 ` [PATCH nf-next 4/9] netfilter: conntrack: use nf_ct_key_equal() in more places Florian Westphal
2016-04-28 17:13 ` [PATCH nf-next 5/9] netfilter: conntrack: small refactoring of conntrack seq_printf Florian Westphal
2016-05-03 18:12 ` Pablo Neira Ayuso
2016-05-03 22:27 ` Florian Westphal [this message]
2016-05-04 9:19 ` Pablo Neira Ayuso
2016-05-03 22:28 ` Pablo Neira Ayuso
2016-04-28 17:13 ` [PATCH nf-next 6/9] netfilter: conntrack: check netns when comparing conntrack objects Florian Westphal
2016-04-28 17:13 ` [PATCH nf-next 7/9] netfilter: conntrack: make netns address part of hash Florian Westphal
2016-04-28 17:13 ` [PATCH nf-next 8/9] netfilter: conntrack: use a single hashtable for all namespaces Florian Westphal
2016-04-29 15:04 ` Florian Westphal
2016-04-28 17:13 ` [PATCH nf-next 9/9] netfilter: conntrack: consider ct netns in early_drop logic Florian Westphal
2016-05-03 22:30 ` [PATCH nf-next 0/9] netfilter: remove per-netns conntrack tables, part 1 Pablo Neira Ayuso
2016-05-05 11:54 ` Pablo Neira Ayuso
2016-05-05 20:27 ` Brian Haley
2016-05-05 20:54 ` Florian Westphal
2016-05-05 22:22 ` Brian Haley
2016-05-05 22:36 ` Florian Westphal
2016-05-05 22:55 ` Brian Haley
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