linux-kernel - Re: [PATCH] Modify UEFI anti-bricking code

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 6 Jun 2013 05:42:01 +0000
From:	Matthew Garrett <matthew.garrett@...ula.com>
To:	joeyli <jlee@...e.com>
CC:	Matt Fleming <matt@...sole-pimps.org>,
	"Fleming, Matt" <matt.fleming@...el.com>,
	"rja@....com" <rja@....com>, "mingo@...nel.org" <mingo@...nel.org>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"bp@...en8.de" <bp@...en8.de>, "jkosina@...e.cz" <jkosina@...e.cz>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"hpa@...ux.intel.com" <hpa@...ux.intel.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"oneukum@...e.de" <oneukum@...e.de>
Subject: Re: [PATCH] Modify UEFI anti-bricking code

On Thu, 2013-06-06 at 13:05 +0800, joeyli wrote:

> +		if (!(attributes & EFI_VARIABLE_NON_VOLATILE))
> +			return EFI_OUT_OF_RESOURCES;

I'd move this up to the top of the function, and just return 0 - there's
no risk of the firmware causing problems if it's a volatile variable, so
we should probably just pass it down to the firmware and return an error
from there.

-- 
Matthew Garrett | mjg59@...f.ucam.org