Re: [PATCH 1/3] tpm: protect against locality counter underflow

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On Sun Feb 25, 2024 at 1:23 PM EET, Daniel P. Smith wrote:
> On 2/23/24 07:58, Jarkko Sakkinen wrote:
> > On Fri Feb 23, 2024 at 3:58 AM EET, Daniel P. Smith wrote:
> >>> Just adding here that I wish we also had a log transcript of bug, which
> >>> is right now missing. The explanation believable enough to move forward
> >>> but I still wish to see a log transcript.
> >>
> >> That will be forth coming.
> > 
> > I did not respond yet to other responses that you've given in the past
> > 12'ish hours or so (just woke up) but I started to think how all this
> > great and useful information would be best kept in memory. Some of it
> > has been discussed in the past but there is lot of small details that
> > are too easily forgotten.
> > 
> > I'd think the best "documentation" approach here would be inject the
> > spec references to the sites where locality behaviour is changed so
> > that it is easy in future cross-reference them, and least of risk
> > of having code changes that would break anything. I think this way
> > all the information that you provided is best preserved for the
> > future.
> > 
> > Thanks a lot for great and informative responses!
>
> No problem at all.
>
> Here is a serial output[1] from a dynamic launch using Linux Secure 
> Launch v7[2] with one additional patch[3] to dump TPM driver state.

But are this fixes for a kernel tree with [2] applied.

If the bugs do not occur in the mainline tree without the out-of-tree
feature, they are not bug fixes. They should then really be part of that
series.

BR, Jarkko





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