[PATCH] crypto: vmx - fix copy-paste error in CTR mode

Daniel Axtens dja at axtens.net
Wed May 15 03:35:51 AEST 2019


Michael Ellerman <mpe at ellerman.id.au> writes:

> Herbert Xu <herbert at gondor.apana.org.au> writes:
>> On Mon, May 06, 2019 at 08:53:17AM -0700, Eric Biggers wrote:
>>>
>>> Any progress on this?  Someone just reported this again here:
>>> https://bugzilla.kernel.org/show_bug.cgi?id=203515
>>
>> Guys if I don't get a fix for this soon I'll have to disable CTR
>> in vmx.
>
> No objection from me.
>
> I'll try and debug it at some point if no one else does, but I can't
> make it my top priority sorry.

I'm a bit concerned that this will end up filtering down to distros and
tanking crypto performance for the entire lifespan of the releases, so
I'd rather fix it if I can.

A quick additional test reveals an issue in the uneven misaligned
splits. (the may-sleep may reveal an extra bug, but there's at least one
with uneven/misaligned.)

By all means disable vmx ctr if I don't get an answer to you in a
timeframe you are comfortable with, but I am going to at least try to
have a look.

Regards,
Daniel

>
> cheers


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