Messages in this thread | | | From | Peter Newman <> | Date | Tue, 20 Dec 2022 17:07:17 +0100 | Subject | Re: [PATCH v6] x86/resctrl: Fix task CLOSID/RMID update race |
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On Fri, Dec 16, 2022 at 2:31 PM Peter Newman <peternewman@google.com> wrote: > In a memory bandwidth-metered compute host, malicious jobs could exploit > this race to remain in a previous CLOSID or RMID in order to dodge a > class-of-service downgrade imposed by an admin or to steal bandwidth.
After discussing with Reinette some more[1], I think the payoff of exploiting this is too little for this to concern me, so I'll remove the paragraph above.
[1] https://lore.kernel.org/lkml/CALPaoCi8hcFzNN9O9fS9Etri_KMdU32UU1tJsfeO1OxR-i1j7g@mail.gmail.com/
Consequently I don't think this fix is critical enough to be needed on stable, so I'll drop the CC: stable from the update.
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