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

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Message-ID: <2518745.1206024774536.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Thu, 20 Mar 2008 23:52:54 +0900 (JST)
From:	kamezawa.hiroyu@...fujitsu.com
To:	KOSAKI Motohiro <m-kosaki@...es.dti.ne.jp>
Cc:	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	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: Re: [BUG?] 2.6.25-rc[23]-mm1 cgroup list corruption under load with VM Scalability patches


>>  > > list_del corruption in cgroup_exit() on 16 cpu, 32GB ia64 NUMA platfor
m.
>>  > >
>>  > >  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 spa
ce
>>  > >  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 b
een
>>  > >  unable to keep the system up long enough under the stress load w/o th
e
>>  > >  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?

*tons* of fixes by Hugh Dickins is merged now,
could you update your base kernel ? (or set config to N in older kernel)

Thanks
-Kame

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