linux-kernel - Re: [PATCH v3 RESEND] efi: Do not import certificates from UEFI Secure Boot for T2 Macs

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Message-ID: <E12D97B8-C609-4AA7-92E7-CE2A952089CD@live.com>
Date:   Tue, 12 Apr 2022 15:40:57 +0000
From:   Aditya Garg <gargaditya08@...e.com>
To:     Mimi Zohar <zohar@...ux.ibm.com>
CC:     "jarkko@...nel.org" <jarkko@...nel.org>,
        "dmitry.kasatkin@...il.com" <dmitry.kasatkin@...il.com>,
        "jmorris@...ei.org" <jmorris@...ei.org>,
        "serge@...lyn.com" <serge@...lyn.com>,
        "ast@...nel.org" <ast@...nel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        "andrii@...nel.org" <andrii@...nel.org>,
        "kafai@...com" <kafai@...com>,
        "songliubraving@...com" <songliubraving@...com>,
        "yhs@...com" <yhs@...com>,
        "john.fastabend@...il.com" <john.fastabend@...il.com>,
        "kpsingh@...nel.org" <kpsingh@...nel.org>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>,
        "keyrings@...r.kernel.org" <keyrings@...r.kernel.org>,
        "linux-security-module@...r.kernel.org" 
        <linux-security-module@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        Orlando Chamberlain <redecorating@...tonmail.com>,
        "admin@...eit.net" <admin@...eit.net>
Subject: Re: [PATCH v3 RESEND] efi: Do not import certificates from UEFI
 Secure Boot for T2 Macs


> dmi_first_match() is called here at the beginning of load_uefi_certs().
> Only if it succeeds would uefi_check_ignore_db(), get_cert_list(),
> uefi_check_ignore_db(), or
> load_moklist_certs() be called.  Is there a need for adding a call to
> dmi_first_match() in any of these other functions?
I’ll test this out.
> 
> thanks,
> 
> Mimi
> 
>>> 
>>> Like in all the other cases, there should be some sort of message. At
>>> minimum, there should be a pr_info().
>>> 
>>>> 
>>>>     if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE))
>>>>             return false;
>>> 
> 
>