linux-kernel - Re: kernel 2.6.23 CFS problem?

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

Message-Id: <200710261804.29136.wangbj@lzu.edu.cn>
Date:	Fri, 26 Oct 2007 18:04:26 +0800
From:	"Wang, Baojun" <wangbj@....edu.cn>
To:	Mike Galbraith <efault@....de>, linux-kernel@...r.kernel.org
Subject: Re: kernel 2.6.23 CFS problem?

On Friday 26 October 2007 17:05:42, you wrote：
> On Fri, 2007-10-26 at 15:32 +0800, Wang, Baojun wrote:
> > > Perhaps he has any tasks stuck in 'D' state?  If so, SysRq-t output for
> > > these would be a good thing to collect.  What leads him to suspect the
> > > process scheduler, etc.  More details are needed.
> >
> > The task is S+ state, please see in the attachment tarball, SysRq-t
> > output has also been attached, I wish it would help. I doubt it's the CFS
> > problem because it's first introduced into the 2.6.23 kernel.
>
> (yeah, but there were a truckload of other changes as well)
>
> Looking at your data, _my_ first suspect would be the 2.6.22->2.6.23
> futex changes.  I'd revert all of the changes to kernel/futex.c and
> kernel/futex_compat.c, and see if the problem went away.  If it didn't,
> I'd then do a full git bisect to nail it down.
>
> 	-Mike

Thanks very much, also my glibc (2.6.1) is built under 2.6.23 (but not 
linux-headers, which is 2.6.22). but I've tried right now (install ELDK4.1) 
on another x86_64 machine, without any problem (x86_64, Core2Duo E6600, 4G 
RAM)

Wang
-- 
Wang, Baojun                                        Lanzhou University
Distributed & Embedded System Lab              http://dslab.lzu.edu.cn
School of Information Science and Engeneering        wangbj@....edu.cn
Tianshui South Road 222. Lanzhou 730000                     .P.R.China
Tel:+86-931-8912025                                Fax:+86-931-8912022

Download attachment "signature.asc " of type "application/pgp-signature" (190 bytes)