linux-kernel - Re: [PATCH] cpuset: fix allocating page cache/slab object on the unallowed node when memory spread is set

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] [day] [month] [year] [list]

Date:	Thu, 12 Feb 2009 13:53:48 -0800
From:	Paul Menage <menage@...gle.com>
To:	miaox@...fujitsu.com
Cc:	Nick Piggin <nickpiggin@...oo.com.au>, Paul Jackson <pj@....com>,
	Andrew Morton <akpm@...ux-foundation.org>, mingo@...e.hu,
	linux-kernel@...r.kernel.org, cl@...ux-foundation.org
Subject: Re: [PATCH] cpuset: fix allocating page cache/slab object on the 
	unallowed node when memory spread is set

On Thu, Feb 12, 2009 at 12:23 AM, Miao Xie <miaox@...fujitsu.com> wrote:
>
> In the extreme case, Task1 will be completely unable to allocate memory
> at worst. At least, it will lead to the delay of allocate pages. Though
> the probability of this case is very low, we have to take into account.

As Nick says, this is basically maliciousness on the part of
(privileged) Task2. I don't think it's a situation we need to even try
to deal with (other than not oopsing, and doing the right thing once
Task2 stops being an ass).

Paul
--
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/