[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <5359A243.9010606@zytor.com>
Date: Thu, 24 Apr 2014 16:46:11 -0700
From: "H. Peter Anvin" <hpa@...or.com>
To: Kees Cook <keescook@...omium.org>, Dave Young <dyoung@...hat.com>
CC: LKML <linux-kernel@...r.kernel.org>
Subject: Re: kaslr should avoid setup_data region
On 04/24/2014 03:50 PM, Kees Cook wrote:
> Ah, it sounds like boot_params.hdr.setup_data contains a series of
> e820-like entries chained together as a linked list? Which loaders
> currently populate that? Looks like EFI? Seems like
> arch/x86/boot/compressed/eboot.c works on setup_data at least.
>
> I won't be in a position to test EFI booting for a while. If someone
> else took this, that would make it get fixed much faster.
>
> Do you have examples where this is actually causing failures?
>
> -Kees
Syslinux can populate it with arbitrary data; in particular Syslinux
uses it to pass FDT information if requested.
-hpa
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists