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

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Message-ID: <20110110141959.GA312@redhat.com>
Date:	Mon, 10 Jan 2011 15:19:59 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Stefan Priebe - Profihost AG <s.priebe@...fihost.ag>
Cc:	Kay Sievers <kay.sievers@...y.org>,
	Dhaval Giani <dhaval@...ux.vnet.ibm.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [BUG stable, 2.6.32.27] sched: delayed cleanup of user_struct

On 01/10, Stefan Priebe - Profihost AG wrote:
>
>>> You can find the logs here:
>>> http://pastebin.com/hNd15E8K
>>
>> Good. Sadly, I didn't see this trace before...
>>
>> 	kernel BUG at kernel/workqueue.c:287!
>>
>> this matches "INIT_DELAYED_WORK() can corrupt the pending work" I
>> mentioned.
> Sorry to ask this but this could also be "workarounded" by disabled
> GROUP_SCHED? Or is this another thing?

Yes, this looks like the same thing.

But let me repeat, today I looked at this code for the first time ;)

> Will wait if greg or anybody else can tell
> us something about it.

Indeed.

Oleg.

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