linux-kernel - RE: [PATCH] lockd: fix races in per-net NSM client handling

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Message-ID: <4FA345DA4F4AE44899BD2B03EEEC2FA90929FCC1@SACEXCMBX04-PRD.hq.netapp.com>
Date:	Wed, 31 Oct 2012 18:18:48 +0000
From:	"Myklebust, Trond" <Trond.Myklebust@...app.com>
To:	Paweł Sikora <pawel.sikora@...k.net>,
	Greg KH <gregkh@...uxfoundation.org>
CC:	"skinsbursky@...allels.com" <skinsbursky@...allels.com>,
	"stable@...r.kernel.org" <stable@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"baggins@...-linux.org" <baggins@...-linux.org>,
	"arekm@...-linux.org" <arekm@...-linux.org>
Subject: RE: [PATCH] lockd: fix races in per-net NSM client handling

> -----Original Message-----
> From: linux-kernel-owner@...r.kernel.org [mailto:linux-kernel-
> owner@...r.kernel.org] On Behalf Of Pawel Sikora
> Sent: Wednesday, October 31, 2012 2:03 PM
> To: Greg KH
> Cc: skinsbursky@...allels.com; stable@...r.kernel.org; linux-
> kernel@...r.kernel.org; baggins@...-linux.org; arekm@...-linux.org
> Subject: Re: [PATCH] lockd: fix races in per-net NSM client handling
> 
> On Wednesday 31 of October 2012 10:49:46 Greg KH wrote:
> > On Wed, Oct 31, 2012 at 06:27:36PM +0100, Paweł Sikora wrote:
> > > Hi,
> > >
> > > the patch metioned in https://lkml.org/lkml/2012/10/24/175 seems to
> > > fix the 3.6.3 oops (while 3.6.2 works fine) at 16-cores opteron server.
> > > please queue this path for 3.6.$next.
> >
> > Is it in Linus's tree already?  If so, what is the git commit id?
> 
> the mainstream contains some lock deamon fixes already:
> 
> * e498daa LOCKD: Clear ln->nsm_clnt only when ln->nsm_users is zero
> * a4ee8d9 LOCKD: fix races in nsm_client_get
> 
> but i don't know where is the right fix. Stanislav, could you put some light on
> this?

The above 2 patches (which are already in 3.6.5) replace Stanislav's patch, which will not be merged upstream.

Trond