linux-kernel - Re: [BUG?] 2.6.25-rc[23]-mm1 cgroup list corruption under load with VM Scalability patches

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Date:	Thu, 20 Mar 2008 16:58:07 +0900
From:	"KOSAKI Motohiro" <m-kosaki@...es.dti.ne.jp>
To:	"Lee Schermerhorn" <Lee.Schermerhorn@...com>
Cc:	"Paul Menage" <menage@...gle.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Rik van Riel" <riel@...hat.com>,
	"KAMEZAWA Hiroyuki" <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [BUG?] 2.6.25-rc[23]-mm1 cgroup list corruption under load with VM Scalability patches

Hi

CC'ed KAMEZAWA-san

>  > > list_del corruption in cgroup_exit() on 16 cpu, 32GB ia64 NUMA platform.
>  > >
>  > >  I've been seeing this for a while now, but we've had known problems
>  > >  [page leaks, ...] with the VM scalability series.  Now the system
>  > >  appears to be running very well with these patches under stress loads
>  > >  that would hang it or cause OOM kill of tests with plenty of swap space
>  > >  left.  Eventually, [after 40-45 minutes], I hit a list corruption in
>  > >  cgroup_exit().
>  > >
>  > >  I can't say for sure that our patches aren't causing this, but I've been
>  > >  unable to keep the system up long enough under the stress load w/o the
>  > >  splitlru+noreclaim patches to hit the problem.

sorry for late responce, I don't notice this thread.
fujitsu guys investigated that problem too.

AFAIK this problem already fixed KAMEZAWA-san.
but I don't know that patch merged -mm or not.

kamezawa-san, please let us know its status?
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