linux-kernel - Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg_pages() and rmap_walk() during migration by not migrating temporary stacks

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: <4BDB3BDC.2050004@redhat.com>
Date:	Fri, 30 Apr 2010 16:21:48 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Andrea Arcangeli <aarcange@...hat.com>
CC:	Mel Gorman <mel@....ul.ie>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Minchan Kim <minchan.kim@...il.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Christoph Lameter <cl@...ux.com>
Subject: Re: [PATCH 2/2] mm,migration: Avoid race between shift_arg_pages()
 and rmap_walk() during migration by not migrating temporary stacks

On 04/30/2010 03:22 PM, Andrea Arcangeli wrote:
> I'm building a mergeable THP+memory compaction tree ready for mainline
> merging based on new anon-vma code, so I'm integrating your patch1 and
> this below should be the port of my alternate fix to your patch2 to
> fix the longstanding crash in migrate (not a bug in new anon-vma code
> but longstanding). patch1 is instead about the bugs introduced by the
> new anon-vma code that might crash migrate (even without memory
> compaction and/or THP) the same way as the bug fixed by the below.
>
> ==
> Subject: fix race between shift_arg_pages and rmap_walk
>
> From: Andrea Arcangeli<aarcange@...hat.com>

Reviewed-by: Rik van Riel <riel@...hat.com>

-- 
All rights reversed
--
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/