linux-kernel - Re: [PATCH 3/3] x86/ima: retry detecting secure boot mode

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Message-ID: <CACdnJustD1fvBYsE=zHE85ZSrKwpArW=_jhRDyhDngdDRNOXJA@mail.gmail.com>
Date:   Mon, 11 Mar 2019 12:20:11 -0700
From:   Matthew Garrett <mjg59@...gle.com>
To:     Mimi Zohar <zohar@...ux.ibm.com>
Cc:     Justin Forbes <jforbes@...hat.com>,
        linux-integrity <linux-integrity@...r.kernel.org>,
        LSM List <linux-security-module@...r.kernel.org>,
        linux-efi <linux-efi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Howells <dhowells@...hat.com>,
        Seth Forshee <seth.forshee@...onical.com>,
        kexec@...ts.infradead.org, Nayna Jain <nayna@...ux.ibm.com>
Subject: Re: [PATCH 3/3] x86/ima: retry detecting secure boot mode

On Mon, Mar 11, 2019 at 9:55 AM Mimi Zohar <zohar@...ux.ibm.com> wrote:
>
> On Fri, 2019-03-08 at 09:51 -0800, Matthew Garrett wrote:
> > Hm. And this only happens on certain firmware versions? If something's
> > stepping on boot_params then we have bigger problems.
>
> I was seeing this problem before and after updating the system
> firmware on my laptop last summer.  If updating the firmware had
> resolved the problem, I wouldn't have included this patch.

Ah, sorry, when you said that you saw this with older firmware I
thought that meant that newer firmware fixed it. What machine are you
testing on?