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

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Date:   Fri, 11 Feb 2022 04:51:22 +0000
From:   Aditya Garg <gargaditya08@...e.com>
To:     Matthew Garrett <mjg59@...f.ucam.org>
CC:     Ard Biesheuvel <ardb@...nel.org>, Jeremy Kerr <jk@...abs.org>,
        "joeyli.kernel@...il.com" <joeyli.kernel@...il.com>,
        "zohar@...ux.ibm.com" <zohar@...ux.ibm.com>,
        "jmorris@...ei.org" <jmorris@...ei.org>,
        "eric.snowberg@...cle.com" <eric.snowberg@...cle.com>,
        "dhowells@...hat.com" <dhowells@...hat.com>,
        "jlee@...e.com" <jlee@...e.com>,
        "James.Bottomley@...senpartnership.com" 
        <James.Bottomley@...senPartnership.com>,
        "jarkko@...nel.org" <jarkko@...nel.org>,
        "mic@...ikod.net" <mic@...ikod.net>,
        "dmitry.kasatkin@...il.com" <dmitry.kasatkin@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
        "linux-security-module@...r.kernel.org" 
        <linux-security-module@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "keyrings@...r.kernel.org" <keyrings@...r.kernel.org>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>,
        Orlando Chamberlain <redecorating@...tonmail.com>,
        Aun-Ali Zaidi <admin@...eit.net>
Subject: Re: [PATCH] efi: Do not import certificates from UEFI Secure Boot for
 T2 Macs



> 
> I'm sorry, I'd build tested it here but clearly screwed that up. Try 
> this one?
> 
> 
With this patch, I built 2 kernels, one with CONFIG_LOAD_UEFI_KEYS=y and other with CONFIG_LOAD_UEFI_KEYS=n. I have got different variables causing panics in both cases. The logs couldn't get saved in journalctl so, I clicked a picture of the same. The kernel anyways was refusing to boot after these logs.

With CONFIG_LOAD_UEFI_KEYS=y, this variable seems to be causing panics

MokIgnoreDB-605dab50-e046-4300-abb6-3dd810dd8b23

The link of the logs :- https://gist.githubusercontent.com/AdityaGarg8/8e820c2724a65fb4bbb5deae2b358dc8/raw/2d3ef24c2b5025d500c5bebd418db5c185a47328/CONFIG_LOAD_UEFI_KEYS=y.jpeg

With CONFIG_LOAD_UEFI_KEYS=n, this variable seems to be causing panics

AppleSecureBootPolicy-94b73556-2197-4702-82a8-3e1337dafbfb

The link of the logs :- https://gist.githubusercontent.com/AdityaGarg8/8e820c2724a65fb4bbb5deae2b358dc8/raw/2d3ef24c2b5025d500c5bebd418db5c185a47328/CONFIG_LOAD_UEFI_KEYS=n.jpeg