linux-kernel - Re: [RFC][PATCH] mm: fix page

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, 08 Mar 2007 12:48:41 +0100
From:	Miklos Szeredi <miklos@...redi.hu>
To:	a.p.zijlstra@...llo.nl
CC:	npiggin@...e.de, akpm@...ux-foundation.org, mingo@...e.hu,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	benh@...nel.crashing.org, jdike@...toit.com, hugh@...itas.com,
	torvalds@...ux-foundation.org
Subject: Re: [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas

> However this still leaves the non-linear reclaim (Nick pointed it out as
> a potential DoS and other people have corroborated this). I have no idea
> on that to do about that.

OK, but that is a completely different problem, not affecting
page_mkclean() or msync().

And it doesn't sound too hard to solve: when current algorithm doesn't
seem to be making progress, then it will have to be done the hard way,
searching for for all nonlinear ptes of a page to unmap.

Miklos
-
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/