Re: Sporadic ESP payload corruption when using IPSec in NAT-T Transport Mode

From: Herbert Xu
Date: Mon Nov 03 2014 - 02:19:13 EST


Evan Gilman <evan@xxxxxxxxxxxxx> wrote:
>
> I tried to find a reference to the previous report of aesni-intel
> causing IPSec corruption under Xen - I'd be interested to read it if
> anyone here has it on hand. For now, we are looking to blacklist
> aesni-intel as we have no other suitable solution, and when combined
> with our other bug, has a detrimental effect on our infrastructure.

Unfortunately the bug is marked as private but it's

https://bugzilla.redhat.com/show_bug.cgi?id=1085025

FWIW it was also observed on AWS. There is speculation that
switching to HVM may fix it. If that were the case, then it's
highly likely that this is a bug in the Xen paravirt code.

It would also mean that if you cannot switch over to HVM then
the most appropriate fix would be to not use aesni-intel.

Cheers,
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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