[Beowulf] RHEL7 kernel update for L1TF vulnerability breaks RDMA

Chris Samuel chris at csamuel.org
Fri Aug 17 20:33:55 PDT 2018

On Saturday, 18 August 2018 12:54:03 AM AEST Kilian Cavalotti wrote:

> That's true: RH mentioned an "embargo'd security fix" but didn't refer
> to L1TF explicitly (which I think is not under embargo anymore).

Agreed, though I'm not sure any of the listed fixes are embargoed now.

> As the reporter of the issue on the Whamcloud JIRA, I also have to
> apologize for initially pointing fingers at Lustre, it didn't cross my
> mind that this kind of whole RDMA stack breakage would have slipped
> past Red Hat's QA.

Oh I didn't read that as pointing any fingers at Lustre at all, just that the 
kernel update broke Lustre for you (and for us!).

All the best,
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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