linux-kernel - Re: Ugly patches for stolen reservation

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, 25 Jul 2013 17:49:56 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
CC:	Ingo Molnar <mingo@...nel.org>, intel-gfx@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, mingo@...e.hu, tglx@...utronix.de,
	torvalds@...ux-foundation.org
Subject: Re: Ugly patches for stolen reservation

On 07/25/2013 04:17 PM, Jesse Barnes wrote:
> Well, it's ok if the boot loader writes to this memory, the worst
> that'll happen is you'll see garbage on the screen.  If the boot loader
> tries to do MMIO mapping on top it'll get into trouble... but why would
> it do that?
> 
> Jesse

Much worse: it could be hunting for a place to put the kernel, and put
it there.

	-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/