linux-kernel - Re: [External] Re: [BUG] blacklist: Problem blacklisting hash (-13) during boot

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Message-ID: <2a215e4d-bf55-b063-3f1f-a63f51cbdbfb@lenovo.com>
Date:   Mon, 27 Feb 2023 08:38:05 -0500
From:   Mark Pearson <markpearson@...ovo.com>
To:     Jeremy Kerr <jk@...econstruct.com.au>,
        Thomas Weißschuh <thomas@...ch.de>,
        Mickaël Salaün <mic@...ikod.net>
CC:     Jarkko Sakkinen <jarkko@...nel.org>,
        David Howells <dhowells@...hat.com>,
        David Woodhouse <dwmw2@...radead.org>,
        <keyrings@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        linux-security-module <linux-security-module@...r.kernel.org>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>
Subject: Re: [External] Re: [BUG] blacklist: Problem blacklisting hash (-13)
 during boot

Hi

On 2/25/23 22:42, Jeremy Kerr wrote:
> Hi Mark,
>
>> I have flagged this to the FW team (LO-2105) to get their feedback
>> and see if we can get it addressed on our platforms.
> Any progress from the FW team about this? I have a fresh-out-of-the-box
> T14s with this issue, there's 33 duplicated hashes in dbx:

I've been looking at this and the FW team are claiming that it's not 
caused by duplicate entries in the dbx table, which is honestly a bit 
confusing.

We've been doing some more digging - but is there a possibility this is 
caused by something else? I was poking around at the kernel code but 
haven't got to the bottom of it yet.

Mark