linux-kernel - Re: [3.10] Oopses in kmem_cache_allocate() via prepare

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Message-ID: <CAEcaRjg7GJhEbQoduup6xQKea4Pn4+SOgv8GbbJUeU=xR74dVQ@mail.gmail.com>
Date:	Tue, 20 Aug 2013 00:51:11 -0700
From:	Ian Applegate <ia@...udflare.com>
To:	Al Viro <viro@...iv.linux.org.uk>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Christoph Lameter <cl@...two.org>,
	Simon Kirby <sim@...tway.ca>,
	Pekka Enberg <penberg@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Chris Mason <chris.mason@...ionio.com>
Subject: Re: [3.10] Oopses in kmem_cache_allocate() via prepare_creds()

Unfortunately no boxen with CONFIG_DEBUG_MUTEXES among them. I can
enable on a few and should have some results within the day. These
mainly serve (quite a bit of) HTTP/S cache traffic.

On Tue, Aug 20, 2013 at 12:21 AM, Al Viro <viro@...iv.linux.org.uk> wrote:
> On Tue, Aug 20, 2013 at 12:17:52AM -0700, Ian Applegate wrote:
>> We are also seeing this or a similar issue. On a fairly widespread
>> deployment of 3.10.1 & 3.10.6 this occurred fairly consistently on the
>> order of 36 days (combined MTBF.)
>
> Do you have any boxen with CONFIG_DEBUG_MUTEXES among those?  What
> kind of setup do you have on those, BTW?
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