From: Flavio Leitner <fbl@redhat.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>,
Linux Kernel Network Developers <netdev@vger.kernel.org>,
Paolo Abeni <pabeni@redhat.com>,
David Miller <davem@davemloft.net>,
Florian Westphal <fw@strlen.de>,
NetFilter <netfilter-devel@vger.kernel.org>
Subject: Re: [PATCH net-next] net: preserve sock reference when scrubbing the skb.
Date: Tue, 26 Jun 2018 09:38:05 -0300 [thread overview]
Message-ID: <20180626123805.GK19565@plex.lan> (raw)
In-Reply-To: <48e15faf-f935-0166-e1db-18f7286e7264@gmail.com>
On Mon, Jun 25, 2018 at 11:41:05PM -0700, Eric Dumazet wrote:
> I am not sure why the patch is so complex, I would have simply
> removed the skb_orphan().
All the rest is fixing netfilter to consider the namespaces before
doing any actions. For instance, it would be possible to dump GID/UID
of the process originating the packet in a foreign net namespace.
Another example is matching if it has a socket or not. I don't think
it's correct to match on a socket that is on a foreign netns.
So, you're right that removing the skb_orphan() is the only thing
required to fix both issues, but then what about the above examples?
--
Flavio
next prev parent reply other threads:[~2018-06-26 12:38 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-25 15:56 [PATCH net-next] net: preserve sock reference when scrubbing the skb Flavio Leitner
2018-06-26 4:15 ` Cong Wang
2018-06-26 6:41 ` Eric Dumazet
2018-06-26 12:38 ` Flavio Leitner [this message]
2018-06-26 13:06 ` Eric Dumazet
2018-06-26 13:32 ` Flavio Leitner
2018-06-26 21:48 ` Cong Wang
2018-06-26 22:03 ` Flavio Leitner
2018-06-26 22:47 ` Cong Wang
2018-06-26 23:33 ` Flavio Leitner
2018-06-27 0:29 ` Cong Wang
2018-06-27 0:39 ` Flavio Leitner
2018-06-27 1:28 ` Cong Wang
2018-06-27 12:31 ` Flavio Leitner
2018-06-27 19:06 ` Cong Wang
2018-06-27 20:19 ` Flavio Leitner
2018-06-28 21:51 ` Cong Wang
2018-06-27 2:32 ` Eric Dumazet
2018-06-26 23:53 ` Eric Dumazet
2018-06-27 0:44 ` Cong Wang
2018-06-27 2:35 ` Eric Dumazet
2018-06-27 18:59 ` Cong Wang
2018-06-27 19:33 ` Eric Dumazet
2018-06-27 19:55 ` Cong Wang
2018-06-28 23:18 ` Cong Wang
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