From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
linux-integrity <linux-integrity@vger.kernel.org>,
Peter Jones <pjones@redhat.com>,
linux-efi <linux-efi@vger.kernel.org>,
stable <stable@vger.kernel.org>, Lyude Paul <lyude@redhat.com>,
Matthew Garrett <mjg59@google.com>,
Roberto Sassu <roberto.sassu@huawei.com>,
Bartosz Szczepanek <bsz@semihalf.com>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 1/2] efi+tpm: Don't access event->count when it isn't mapped.
Date: Fri, 27 Sep 2019 18:28:04 +0300 [thread overview]
Message-ID: <20190927152747.GA10545@linux.intel.com> (raw)
In-Reply-To: <20190925151616.3glkehdrmuwtosn3@cantor>
On Wed, Sep 25, 2019 at 08:16:16AM -0700, Jerry Snitselaar wrote:
> On Wed Sep 25 19, Jarkko Sakkinen wrote:
> > On Wed, Sep 25, 2019 at 12:25:05PM +0200, Ard Biesheuvel wrote:
> > > On Wed, 25 Sep 2019 at 12:16, Jarkko Sakkinen
> > > <jarkko.sakkinen@linux.intel.com> wrote:
> > > >
> > > > From: Peter Jones <pjones@redhat.com>
> > > >
> > > > Some machines generate a lot of event log entries. When we're
> > > > iterating over them, the code removes the old mapping and adds a
> > > > new one, so once we cross the page boundary we're unmapping the page
> > > > with the count on it. Hilarity ensues.
> > > >
> > > > This patch keeps the info from the header in local variables so we don't
> > > > need to access that page again or keep track of if it's mapped.
> > > >
> > > > Fixes: 44038bc514a2 ("tpm: Abstract crypto agile event size calculations")
> > > > Cc: linux-efi@vger.kernel.org
> > > > Cc: linux-integrity@vger.kernel.org
> > > > Cc: stable@vger.kernel.org
> > > > Signed-off-by: Peter Jones <pjones@redhat.com>
> > > > Tested-by: Lyude Paul <lyude@redhat.com>
> > > > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
> > > > Acked-by: Matthew Garrett <mjg59@google.com>
> > > > Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> > > > Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
> > >
> > > Thanks Jarkko.
> > >
> > > Shall I take these through the EFI tree?
> >
> > Would be great, if you could because I already sent one PR with fixes for
> > v5.4-rc1 yesterday.
> >
> > /Jarkko
>
> My patch collides with this, so I will submit a v3 that applies on top of
> these once I've run a test with all 3 applied on this t480s.
Great, thanks.
/Jarkko
prev parent reply other threads:[~2019-09-27 15:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-25 10:16 [PATCH v2 1/2] efi+tpm: Don't access event->count when it isn't mapped Jarkko Sakkinen
2019-09-25 10:16 ` [PATCH v2 2/2] efi+tpm: don't traverse an event log with no events Jarkko Sakkinen
2019-09-25 10:25 ` [PATCH v2 1/2] efi+tpm: Don't access event->count when it isn't mapped Ard Biesheuvel
2019-09-25 14:50 ` Jarkko Sakkinen
2019-09-25 15:16 ` Jerry Snitselaar
2019-09-25 16:41 ` Jerry Snitselaar
2019-09-27 15:29 ` Jarkko Sakkinen
2019-09-27 15:28 ` Jarkko Sakkinen [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190927152747.GA10545@linux.intel.com \
--to=jarkko.sakkinen@linux.intel.com \
--cc=ard.biesheuvel@linaro.org \
--cc=bsz@semihalf.com \
--cc=linux-efi@vger.kernel.org \
--cc=linux-integrity@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lyude@redhat.com \
--cc=mjg59@google.com \
--cc=pjones@redhat.com \
--cc=roberto.sassu@huawei.com \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).