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From: Ingo Molnar <mingo@elte.hu>
To: David Howells <dhowells@redhat.com>
Cc: "Serge E. Hallyn" <serue@us.ibm.com>,
	KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Subject: Re: [CRED bug?] 2.6.29-rc3 don't survive on stress workload
Date: Fri, 13 Feb 2009 09:28:20 +0100	[thread overview]
Message-ID: <20090213082820.GC4606@elte.hu> (raw)
In-Reply-To: <12311.1234459104@redhat.com>


* David Howells <dhowells@redhat.com> wrote:

> Serge E. Hallyn <serue@us.ibm.com> wrote:
> 
> > 	1. put_user_ns() was being called before the uid (which
> > 	   was in the init_user_ns) was unhashed
> 
> Ah yes...  but only if CONFIG_USER_NS=y.  Otherwise the unhash was being done
> before the release anyway.  With this option set, the unhash was being deferred
> to a workqueue thread.
> 
> Okay, that seems reasonable.

Note Serge's fix also fixed a mystery hang/crash on a -tip testbox that
has been broken since the merge window. Last night it produced a straight
series of 550 bootups - previously it would crash/hang after 20-30
iterations. (i did not report it in this thread before because it's a new 
testbox with just a few weeks of track record and thus i could not exclude
potential hardware trouble)

So the bug is very much fixed.

Tested-by: Ingo Molnar <mingo@elte.hu>

	Ingo

      parent reply	other threads:[~2009-02-13  8:28 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-02-10  5:41 [CRED bug?] 2.6.29-rc3 don't survive on stress workload KOSAKI Motohiro
2009-02-10  7:10 ` Vegard Nossum
2009-02-10  7:28   ` KOSAKI Motohiro
2009-02-11  3:56     ` Vegard Nossum
2009-02-11 10:48       ` David Howells
2009-02-10 12:18   ` Ingo Molnar
2009-02-11 12:25   ` KOSAKI Motohiro
2009-02-11 12:54     ` David Howells
2009-02-10 10:35 ` David Howells
2009-02-10 10:49   ` KOSAKI Motohiro
2009-02-11 12:41 ` David Howells
2009-02-11 12:52   ` KOSAKI Motohiro
2009-02-11 13:09     ` David Howells
2009-02-11 14:04       ` KOSAKI Motohiro
2009-02-11 16:33       ` Ingo Molnar
2009-02-11 17:07         ` David Howells
2009-02-11 17:19           ` Ingo Molnar
2009-02-12 11:09 ` David Howells
2009-02-12 11:23   ` KOSAKI Motohiro
2009-02-12 12:04     ` David Howells
2009-02-12 14:39       ` Serge E. Hallyn
2009-02-12 17:18         ` David Howells
2009-02-13  4:44           ` KOSAKI Motohiro
2009-02-13  8:28           ` Ingo Molnar [this message]

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