Date: Wed, 9 Sep 2009 17:57:49 -0400
From: Chuck Ebbert <cebbert@redhat.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, torvalds@linux-foundation.org,
       dhowells@redhat.com, roland@redhat.com, jmorris@namei.org,
       tom.horsley@att.net, linux-kernel@vger.kernel.org, stable@kernel.org
Subject: Re: [PATCH v3] exec: do not sleep in TASK_TRACED under
 ->cred_guard_mutex
Message-ID: <20090909175749.541b6aa9@dhcp-100-2-144.bos.redhat.com>
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	<20090904154947.GA17048@redhat.com>
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On Fri, 4 Sep 2009 23:33:37 +0200
Oleg Nesterov <oleg@redhat.com> wrote:

> On 09/04, Andrew Morton wrote:
> >
> > On Fri, 4 Sep 2009 19:26:48 +0200
> > Oleg Nesterov <oleg@redhat.com> wrote:
> >
> > > Tom Horsley reports that his debugger hangs when it tries to read
> > > /proc/pid_of_tracee/maps, this happens since
> > >
> > > 	"mm_for_maps: take ->cred_guard_mutex to fix the race with exec"
> > > 	04b836cbf19e885f8366bccb2e4b0474346c02d
> > >
> > > commit in 2.6.31.

> 
> > I see a Cc:stable in the mail headers, but not in the changelog.  I
> > don't think the patch is applicable to -stable unless we miss 2.6.31.
> 
> -stable has the same problems but I agree, it can live without this fix.
> 

That patch was backported in 2.6.30.5 -- are you sure -stable doesn't need
this fix?
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