linux-kernel - RE: Warning in during hotplug on 2.6.27-rc2-git5

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:	Thu, 14 Aug 2008 13:35:49 -0500
From:	"Langsdorf, Mark" <mark.langsdorf@....com>
To:	"Andi Kleen" <andi@...stfloor.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	<linux-kernel@...r.kernel.org>, "Greg KH" <greg@...ah.com>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Andrew Morton" <akpm@...ux-foundation.org>
Subject: RE: Warning in during hotplug on 2.6.27-rc2-git5

> On Thu, Aug 14, 2008 at 05:53:57PM +0200, Rafael J. Wysocki wrote:
> > On Wednesday, 13 of August 2008, Mark Langsdorf wrote:
> > > I'm seeing the following error message when I hotunplug and replug
> > > a cpu in 2.6.27-rc2-git5.  The system becomes unstable almost
> > > immediately afterwards.
> > 
> > Hm, it seems that MCE is involved somehow.  Andi, can you 
> have a look at this,
> > please?
> 
> FWIW the mce code here actually hasn't changed for a long time.
> 
> 
> > > ------------[ cut here ]------------
> > > WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x33/0x39()
> > > sysfs: duplicate filename 'machinecheck4' can not be created
> 
> The only way I could see that happening if CPU_DEAD/CPU_ONLINE
> is not properly balanced.

I'm still seeing it on 2.6.27-rc2, even with the 
patch here http://lkml.org/lkml/2008/7/30/171 and the
wbinvd_halt code patch applied.  Maybe something else
broke in some of the recent hotplug changes?

-Mark Langsdorf
Operating System Research Center
AMD

--
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/