linux-kernel - Re: [PATCH 1/2] kmemcheck v3

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]

Message-ID: <20080208115542.GD4745@one.firstfloor.org>
Date:	Fri, 8 Feb 2008 12:55:42 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Vegard Nossum <vegard.nossum@...il.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Pekka Enberg <penberg@...helsinki.fi>,
	Andi Kleen <andi@...stfloor.org>,
	Richard Knutsson <ricknu-0@...dent.ltu.se>,
	Christoph Lameter <clameter@....com>
Subject: Re: [PATCH 1/2] kmemcheck v3

On Thu, Feb 07, 2008 at 10:36:20PM +0100, Vegard Nossum wrote:
> With a lot of help from Ingo Molnar and Pekka Enberg over the last couple of
> weeks, we've been able to produce a new version of kmemcheck!

Impressive patch! On the other hand a lot of the interesting
data isn't it kmalloc anymore, but in slab. Does it really track
all that much? 

Also i'm not sure how you handle initializedness of DMAed data
(like network buffers). Wouldn't you need hooks into pci_dma_*
for this?

Your assumption that only the string instructions can take
multiple page faults seems a little dangerous too.

-Andi
--
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/