linux-kernel - Re: [BUG stable, 2.6.32.27] sched: delayed cleanup of user

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Date:	Mon, 10 Jan 2011 19:43:04 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Greg KH <gregkh@...e.de>
Cc:	Stefan Priebe - Profihost AG <s.priebe@...fihost.ag>,
	Kay Sievers <kay.sievers@...y.org>,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, Mike Galbraith <efault@....de>
Subject: Re: [BUG stable, 2.6.32.27] sched: delayed cleanup of user_struct

On 01/10, Greg KH wrote:
>
> Tell us about what?  I'm totally confused here, what is the problem?

Please look at http://marc.info/?l=linux-kernel&m=129466345327931

I think that free_user's delayed logic is buggy, and the traces
from Stefan seems to confirm the theory.

As Mike suggests, we can just remove the deprecated USER_SCHED
code and forget about this problem.

Oleg.

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