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

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Message-ID: <CACdnJusqHZ1OLJD1baN=fXK9KE+bSqzB4OUbmLXH5-qZNrQXJg@mail.gmail.com>
Date:   Thu, 7 Mar 2019 14:28:52 -0800
From:   Matthew Garrett <mjg59@...gle.com>
To:     Mimi Zohar <zohar@...ux.ibm.com>
Cc:     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>, jforbes@...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, Nov 19, 2018 at 11:57 AM Mimi Zohar <zohar@...ux.ibm.com> wrote:
>
> The secure boot mode may not be detected on boot for some reason (eg.
> buggy firmware).  This patch attempts one more time to detect the
> secure boot mode.

Do we have cases where this has actually been seen? I'm not sure what
the circumstances are that would result in this behaviour.