linux-kernel - Re: [PATCH v3 4/5] efi: call get_event

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Message-ID: <20171016114946.phj3n6vyjdbpj2sj@linux.intel.com>
Date:   Mon, 16 Oct 2017 14:49:46 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Thiebaud Weksteen <tweek@...gle.com>
Cc:     linux-efi@...r.kernel.org, linux-integrity@...r.kernel.org,
        tpmdd-devel@...ts.sourceforge.net,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Matt Fleming <matt@...eblueprint.co.uk>,
        linux-kernel@...r.kernel.org, Matthew Garrett <mjg59@...gle.com>,
        peterhuewe@....de,
        Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
        tpmdd@...horst.net
Subject: Re: [PATCH v3 4/5] efi: call get_event_log before ExitBootServices

On Mon, Oct 16, 2017 at 02:28:33PM +0300, Jarkko Sakkinen wrote:
> On Wed, Oct 11, 2017 at 02:52:54PM +0300, Jarkko Sakkinen wrote:
> > On Wed, Oct 11, 2017 at 12:54:26PM +1100, James Morris wrote:
> > > On Tue, 10 Oct 2017, Jarkko Sakkinen wrote:
> > > 
> > > > The way I've agreed with James Morris to have my tree is to be rooted to
> > > > security trees next branch.
> > > > 
> > > > James, what actions should we take?
> > > 
> > > This process has changed recently -- I posted to lsm but forgot to post to 
> > > linux-integrity.
> > > 
> > > http://kernsec.org/pipermail/linux-security-module-archive/2017-September/003356.html
> > > 
> > > Summary: please track the next-general branch in my tree for your 
> > > development, it replaces 'next'.
> > > 
> > > 
> > > - James
> > > -- 
> > > James Morris
> > > <jmorris@...ei.org>
> > 
> > Ah I'm subscribed to that list but lately been busy getting a huge patch
> > set to platform-driver-x86 [1] for review, which has prioritized out
> > reading much else than linux-integrity.
> > 
> > Thank you. I'll retry the patches tomorrow.
> > 
> > /Jarkko
> 
> Cannot observer binary_bios_measuremens file.
> 
> What kind of hardware was used to develop/test this?
> 
> I tried it with Kabylake and PTT (firmware TPM).
> 
> /Jarkko

My guess would be wrong event log format.

At minimum this patch set should add a klog (info level) message to tell
that unsupported event log format is being used.

/Jarkko