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Date: Tue, 6 Nov 2012 19:03:58 +0800
Message-ID: <CACVXFVOEagv_BgZCTzEgRSpaHEiM6ptNuXAePUaXDb8GfRogSw@mail.gmail.com>
Subject: Re: [PATCH RFC 0/4] Add firmware signature file check
From: Ming Lei <tom.leiming@gmail.com>
To: Takashi Iwai <tiwai@suse.de>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
        joeyli <jlee@suse.com>, Jiri Kosina <jkosina@suse.cz>,
        David Howells <dhowells@redhat.com>,
        Rusty Russell <rusty@rustcorp.com.au>, linux-kernel@vger.kernel.org,
        linux-security-module@vger.kernel.org, linux-efi@vger.kernel.org
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On Tue, Nov 6, 2012 at 6:53 PM, Takashi Iwai <tiwai@suse.de> wrote:
> At Tue, 6 Nov 2012 18:40:57 +0800,
>> It is true if all firmwares are signed on safe boot. If firmware is allowed
>> to be loaded from network or other non-fs place in secure distribution,
>> your patch will break this loading.
>
> Do we already have such a secure mechanism?  How is the security
> assured?

I don't know, and my comments are just on your patch and the condition.
I understand secure guys should know if the condition may be true or false, :-)

>> The clue can be found from debug message.
>
> Debug messages are turned off on normal machines, unfortunately.

Kernel guys will put one eye on bug report, also enabling udev log
can help the problem too.


Thanks,
-- 
Ming Lei
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