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SubjectRe: [flame^Wreview] net: netprio_cgroup: rework update socket logic
[...]

> HOWEVER, it still doesn't address more fundamental problem - somebody
> creating a socket and passing it to you in SCM_RIGHTS datagram will
> leave you with a socket you can do IO on, still tagged according to who
> had created it.
>
> AFAICS, the whole point of that exercise was to allow third-party changing
> the priorities of traffic on sockets already created by a process we now
> move to a different cgroup. Consider e.g. this:

Correct that is the point of the exercise.

To fix this specific case we could add a call to sock_update_netprioidx
in scm_recv to set the sk_cgrp_prioidx value.


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