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

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Message-ID: <20171004112052.7fiwkpun62zphawi@linux.intel.com>
Date:   Wed, 4 Oct 2017 14:20:52 +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 Wed, Oct 04, 2017 at 01:51:13PM +0300, Jarkko Sakkinen wrote:
> On Fri, Sep 29, 2017 at 08:16:17PM +0300, Jarkko Sakkinen wrote:
> > On Tue, Sep 26, 2017 at 02:49:31PM +0200, Thiebaud Weksteen wrote:
> > > On Tue, Sep 26, 2017 at 1:45 PM, Jarkko Sakkinen
> > > <jarkko.sakkinen@...ux.intel.com> wrote:
> > > > On Wed, Sep 20, 2017 at 10:13:39AM +0200, Thiebaud Weksteen wrote:
> > > >> With TPM 2.0 specification, the event logs may only be accessible by
> > > >> calling an EFI Boot Service. Modify the EFI stub to copy the log area to
> > > >> a new Linux-specific EFI configuration table so it remains accessible
> > > >> once booted.
> > > >>
> > > >> When calling this service, it is possible to specify the expected format
> > > >> of the logs: TPM 1.2 (SHA1) or TPM 2.0 ("Crypto Agile"). For now, only the
> > > >> first format is retrieved.
> > > >>
> > > >> Signed-off-by: Thiebaud Weksteen <tweek@...gle.com>
> > > >
> > > > Does not apply:
> > > >
> > > > Applying: tpm: move tpm_eventlog.h outside of drivers folder
> > > > Applying: tpm: rename event log provider files
> > > > Applying: tpm: add event log format version
> > > > Applying: efi: call get_event_log before ExitBootServices
> > > > error: sha1 information is lacking or useless (drivers/firmware/efi/efi.c).
> > > > error: could not build fake ancestor
> > > > Patch failed at 0004 efi: call get_event_log before ExitBootServices
> > > > The copy of the patch that failed is found in: .git/rebase-apply/patch
> > > > When you have resolved this problem, run "git am --continue".
> > > > If you prefer to skip this patch, run "git am --skip" instead.
> > > > To restore the original branch and stop patching, run "git am --abort".
> > > >
> > > > Just rebased my tree to the latest security-next.
> > > 
> > > It applies fine on security/next-general which is more up-to-date.
> > > (security/next does not include
> > > ccc829ba3624beb9a703fc995d016b836d9eead8 on which this patch set is
> > > based)
> > 
> > Thanks, my bad, I though that I had it updated.
> > 
> > I'll update my tree and retry.
> > 
> > /Jarkko
> 
> My master is up to date with security/next.
> 
> Still get the same result:
> 
> $ git am -3 ~/Downloads/v3-4-5-efi-call-get_event_log-before-ExitBootServices.patch
> Applying: efi: call get_event_log before ExitBootServices
> error: sha1 information is lacking or useless (drivers/firmware/efi/efi.c).
> error: could not build fake ancestor
> Patch failed at 0001 efi: call get_event_log before ExitBootServices
> The copy of the patch that failed is found in: .git/rebase-apply/patch
> When you have resolved this problem, run "git am --continue".
> If you prefer to skip this patch, run "git am --skip" instead.
> To restore the original branch and stop patching, run "git am --abort".
> 
> Maybe you have some other trees fetched in your local GIT so that it
> finds the ancestors? Anyway, cannot test this at this point.
> 
> /Jarkko

I pushed the first three patches to my master as they looked OK. You
should still consider them unreviewed.

/Jarkko