linux-kernel - Re: [PATCH V5 2/4] tpm: Reserve the TPM final events table

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Message-ID: <CACdnJuvDuw0X9iwEqOu7EjM5ca1f+n7f=xqzrTPS9PyrmqKNHQ@mail.gmail.com>
Date:   Thu, 2 May 2019 11:04:03 -0700
From:   Matthew Garrett <mjg59@...gle.com>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Ingo Molnar <mingo@...nel.org>,
        Bartosz Szczepanek <bsz@...ihalf.com>,
        linux-integrity <linux-integrity@...r.kernel.org>,
        Peter Huewe <peterhuewe@....de>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Roberto Sassu <roberto.sassu@...wei.com>,
        linux-efi <linux-efi@...r.kernel.org>,
        LSM List <linux-security-module@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Thiébaud Weksteen <tweek@...gle.com>
Subject: Re: [PATCH V5 2/4] tpm: Reserve the TPM final events table

On Thu, May 2, 2019 at 12:15 AM Ard Biesheuvel
<ard.biesheuvel@...aro.org> wrote:
>
> (+ Ingo)
>
> On Tue, 30 Apr 2019 at 21:52, Matthew Garrett <mjg59@...gle.com> wrote:
> >
> > On Tue, Apr 30, 2019 at 6:07 AM Bartosz Szczepanek <bsz@...ihalf.com> wrote:
> > >
> > > I may be a little late with this comment, but I've just tested these
> > > patches on aarch64 platform (from the top of jjs/master) and got
> > > kernel panic ("Unable to handle kernel read", full log at the end of
> > > mail). I think there's problem with below call to
> > > tpm2_calc_event_log_size(), where physical address of efi.tpm_log is
> > > passed as (void *) and never remapped:
> >
> > Yes, it looks like this is just broken. Can you try with the attached patch?
>
> I'm a bit uncomfortable with EFI code that is obviously broken and
> untested being queued for the next merge window in another tree.

The patchset was Cc:ed to linux-efi@. Is there anything else I should
have done to ensure you picked it up rather than Jarkko?