linux-kernel - Re: [PATCH] ima_fs: Avoid creating measurement lists for unsupported hash algos

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Message-ID: <CAGrbwDTTPNkogW1WM0goz-JTgV+CQgO4fGng8brox5+wWKGFtA@mail.gmail.com>
Date: Tue, 27 Jan 2026 10:12:53 +0000
From: Dmitry Safonov <dima@...sta.com>
To: Roberto Sassu <roberto.sassu@...weicloud.com>
Cc: Mimi Zohar <zohar@...ux.ibm.com>, Roberto Sassu <roberto.sassu@...wei.com>, 
	Dmitry Kasatkin <dmitry.kasatkin@...il.com>, Eric Snowberg <eric.snowberg@...cle.com>, 
	Paul Moore <paul@...l-moore.com>, James Morris <jmorris@...ei.org>, 
	"Serge E. Hallyn" <serge@...lyn.com>, Silvia Sisinni <silvia.sisinni@...ito.it>, 
	Enrico Bravi <enrico.bravi@...ito.it>, linux-integrity@...r.kernel.org, 
	linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Dmitry Safonov <0x7f454c46@...il.com>
Subject: Re: [PATCH] ima_fs: Avoid creating measurement lists for unsupported
 hash algos

On Tue, Jan 27, 2026 at 10:02 AM Roberto Sassu
<roberto.sassu@...weicloud.com> wrote:
[..]
> > I'm not quite sure what you mean. `algo` here is HASH_ALGO__LAST as
> > you see by the check added. As it's initialized by
> > ima_tpm_chip->allocated_banks[i].crypto_id, I presume it's
> > HASH_ALGO__LAST there as well (didn't check this assumption though).
> > Do you mean to print hex value of HASH_ALGO__LAST?
>
> Even if you don't have the crypto ID because the TPM ID is not mapped,
> you can still use the TPM ID (ima_tpm_chip->allocated_banks[i].alg_id).
>
> I wanted to have a file name that includes the TPM ID.

I see, thanks, I'll try this.

Thanks,
           Dmitry