From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Oliver <olipro@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: [PATCH] death_by_event() does not check IPS_DYING_BIT - race condition against ctnetlink_del_conntrack
Date: Fri, 31 Aug 2012 11:27:20 +0200 [thread overview]
Message-ID: <20120831092720.GA7139@1984> (raw)
In-Reply-To: <2118331.Ka640JXjym@gentoovm>
On Fri, Aug 31, 2012 at 02:19:36AM +0200, Oliver wrote:
> On Thursday 30 August 2012 20:39:50 Pablo Neira Ayuso wrote:
> > Interesting, how are those assumptions fulfilled?
>
> Well, timing of course ;) - essentially, traffic paths are ensured longer than
> the actual time for replication of conntrack state.
I see.
> > Agreed. But I don't come with any netfilter change that may result in
> > that problem you're reporting. You'll have to debug this and get back
> > to me with more information.
>
> You can disregard this, turned out to be due to the unfortunate fact that
> net.ipv4.netfilter.ip_conntrack_tcp_be_liberal is of course replaced by
> net.netfilter.nf_conntrack_tcp_be_liberal under 3.4
$ ls /proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_be_liberal
/proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_be_liberal
Probably you forgot to set CONFIG_NF_CONNTRACK_PROC_COMPAT=y
We haven't remove it yet, although it should be bad to schedule this
for removal.
> Please feel free to send me your latest rework of the patch and I will be
> happy to test it out.
Will do.
prev parent reply other threads:[~2012-08-31 9:27 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-27 9:33 [PATCH] death_by_event() does not check IPS_DYING_BIT - race condition against ctnetlink_del_conntrack Oliver
2012-08-28 10:52 ` Pablo Neira Ayuso
2012-08-28 17:16 ` Oliver
2012-08-28 23:10 ` Oliver
2012-08-30 0:52 ` Pablo Neira Ayuso
2012-08-30 2:05 ` Oliver
2012-08-30 2:25 ` Pablo Neira Ayuso
[not found] ` <5427975.6moJlq4F9d@gentoovm>
[not found] ` <20120830025009.GA16782@1984>
2012-08-30 3:09 ` Oliver
2012-08-30 10:34 ` Pablo Neira Ayuso
2012-08-30 12:28 ` Oliver
2012-08-30 12:39 ` Oliver
2012-08-30 16:22 ` Pablo Neira Ayuso
2012-08-30 17:49 ` Oliver
2012-08-30 18:39 ` Pablo Neira Ayuso
2012-08-31 0:19 ` Oliver
2012-08-31 9:27 ` Pablo Neira Ayuso [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120831092720.GA7139@1984 \
--to=pablo@netfilter.org \
--cc=netfilter-devel@vger.kernel.org \
--cc=olipro@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).