netdev - Re: [PATCH net v2 2/2] net: ipv6: fix dst ref loops in rpl, seg6 and ioam6 lwtunnels

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Message-ID: <21027e9a-60f1-4d4b-a09d-9d74f6a692e5@redhat.com>
Date: Thu, 30 Jan 2025 12:34:14 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: Jakub Kicinski <kuba@...nel.org>, davem@...emloft.net
Cc: netdev@...r.kernel.org, edumazet@...gle.com, andrew+netdev@...n.ch,
 horms@...nel.org, dsahern@...nel.org, justin.iurman@...ege.be
Subject: Re: [PATCH net v2 2/2] net: ipv6: fix dst ref loops in rpl, seg6 and
 ioam6 lwtunnels



On 1/30/25 4:15 AM, Jakub Kicinski wrote:
> Some lwtunnels have a dst cache for post-transformation dst.
> If the packet destination did not change we may end up recording
> a reference to the lwtunnel in its own cache, and the lwtunnel
> state will never be freed.

The series LGTM, but I'm wondering if we can't have a similar loop for
input lwt?

Thanks,

Paolo