linux-kernel - Re: [PATCH 1/8] x86, kaslr: get kaslr

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Message-ID: <20150301193929.GB7748@pd.tnic>
Date:	Sun, 1 Mar 2015 20:39:29 +0100
From:	Borislav Petkov <bp@...e.de>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Jiri Kosina <jkosina@...e.cz>, Kees Cook <keescook@...omium.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Matt Fleming <matt.fleming@...el.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Subject: Re: [PATCH 1/8] x86, kaslr: get kaslr_enabled back correctly

On Sun, Mar 01, 2015 at 04:23:51PM +0100, Ingo Molnar wrote:
> I think that's a different bug.
> 
> parse_kaslr_setup() is simply bogus, it does:
> 
>         kaslr_enabled = (bool)(pa_data + sizeof(struct setup_data));

Well, we found that while debugging the other issue too:

https://lkml.kernel.org/r/20150228105049.GA11038@pd.tnic

Scroll to the end.

> So I'm inclined to apply Yinghai's fix, with a better changelog that 
> explains what happened ...
> 
> Agreed?

Yes, this fix needs a commit message which actually explains what's it
fixing before it gets applied.

Thanks.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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