linux-kernel - Re: [PATCH] rmap: Fix Bugzilla Bug #5493

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:	Fri, 05 Mar 2010 09:10:53 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Christian Ehrhardt <lk@...e.de>
CC:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	linux-mm@...ck.org
Subject: Re: [PATCH] rmap: Fix Bugzilla Bug #5493

On 03/05/2010 04:38 AM, Christian Ehrhardt wrote:
>
> Hi,
>
> this patch fixes bugzilla Bug
>
>          http://bugzilla.kernel.org/show_bug.cgi?id=5493
>
> This bug describes a search complexity failure in rmap if a single
> anon_vma has a huge number of vmas associated with it.
>
> The patch makes the vma prio tree code somewhat more reusable and then uses
> that to replace the linked list of vmas in an anon_vma with a prio_tree.

Your patch will not apply against a current -mm, because it
conflicts with my anon_vma linking patches (which attacks
another "rmap walks too many vmas" failure mode).

Please rediff your patch against the latest -mm tree.
--
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/