linux-kernel - Re: meminfo Committed

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]

Message-Id: <1240906631.29485.75.camel@nimitz>
Date:	Tue, 28 Apr 2009 01:17:11 -0700
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	balbir@...ux.vnet.ibm.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, ebmunson@...ibm.com,
	mel@...ux.vnet.ibm.com, cl@...ux-foundation.org, stable@...nel.org
Subject: Re: meminfo Committed_AS underflows

On Mon, 2009-04-27 at 20:27 -0700, Andrew Morton wrote:
> There's potential here for weird performance regressions, so I think
> that if we do this in mainline, we should wait a while (a few weeks?)
> before backporting it.
> 
> Do we know how long this bug has existed for?  Quite a while, I
> expect?

Yeah, we didn't notice it until a recent enterprise distro got a config
with NR_CPUS=1024.  That opened the window up in a major way because of
the way we calculated the threshold.

-- Dave

--
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/