linux-kernel - Re: [Bug 213577] New: kernel_lockdown.7 seems to be incorrect about automatically enabling lockdown mode in secure boot mode

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Message-ID: <0fd0f9af-65e8-b9fa-6487-ef28deb7e502@gmail.com>
Date:   Sat, 3 Jul 2021 21:01:44 +0200
From:   "Alejandro Colomar (man-pages)" <alx.manpages@...il.com>
To:     bugzilla-daemon@...zilla.kernel.org,
        David Howells <dhowells@...hat.com>,
        Heinrich Schuchardt <xypron.glpk@....de>,
        Michael Kerrisk <mtk.manpages@...il.com>
Cc:     Pedro Principeza <pedro.principeza@...onical.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dann frazier <dann.frazier@...onical.com>
Subject: Re: [Bug 213577] New: kernel_lockdown.7 seems to be incorrect about
 automatically enabling lockdown mode in secure boot mode

Added a few CCs.

On 6/25/21 8:58 AM, bugzilla-daemon@...zilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=213577
> 
>             Bug ID: 213577
>            Summary: kernel_lockdown.7 seems to be incorrect about
>                     automatically enabling lockdown mode in secure boot
>                     mode
>            Product: Documentation
>            Version: unspecified
>           Hardware: All
>                 OS: Linux
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: man-pages
>           Assignee: documentation_man-pages@...nel-bugs.osdl.org
>           Reporter: peter@...eblog.net
>         Regression: No
> 
> As of the time of posting, the kernel_lockdown.7 manpage [1] contains a
> description about how lockdown mode is enabled by default when using EFI secure
> boot:
> 
>> On an EFI-enabled x86 or arm64 machine, lockdown will be automatically
>> enabled
> if the system boots in EFI Secure Boot mode.
> 
> I have not followed lockdown development upstream recently, but it seems that
> as of today the feature described above is still a downstream patch shipped by
> some distributions like Fedora [2][3]. If this is the case, then including this
> statement in the man page would be inappropriate, since it would not apply to
> other distributions such as Arch Linux which do not include said patches.
> 
> [1]:
> https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/man7/kernel_lockdown.7#n31
> [2]:
> https://src.fedoraproject.org/rpms/kernel/blob/rawhide/f/Patchlist.changelog#_205
> [3]:
> https://gitlab.com/cki-project/kernel-ark/-/commit/5850c93175b9d2e1081873f4bbe08dead202cb08
> 

-- 
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/