netdev - Re: [RFC PATCH net] vrf: fix incorrect dereferencing of skb->cb

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Message-ID: <6beec611-6af4-7a39-7581-a0a56821698d@kernel.org>
Date:   Thu, 17 Feb 2022 20:53:48 -0700
From:   David Ahern <dsahern@...nel.org>
To:     "D. Wythe" <alibuda@...ux.alibaba.com>,
        David Ahern <dsahern@...nel.org>
Cc:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org
Subject: Re: [RFC PATCH net] vrf: fix incorrect dereferencing of skb->cb

On 2/16/22 10:37 PM, D. Wythe wrote:
> Got your point, this patch is not really appropriate considering
> that. Another way to complete the test may be to modify the IP address
> of vrf blue in test script，the default local loopback address is the
> reason for this failure. What do you think ?

Someone needs to dive into the source address selection code and see why
it fails when crossing vrfs. I found a reminder note:
ipv6_chk_acast_addr needs l3mdev check. Can you take a look?