linux-kernel - Re: [stable] [PATCH] modules fix incorrect percpu usage

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Date:	Wed, 21 Apr 2010 15:39:14 -0700
From:	Greg KH <greg@...ah.com>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Rusty Russell <rusty@...tcorp.com.au>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Eric Dumazet <dada1@...mosbay.com>, Tejun Heo <tj@...nel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	stable <stable@...nel.org>
Subject: Re: [stable] [PATCH] modules fix incorrect percpu usage

On Tue, Apr 20, 2010 at 10:34:57AM -0400, Mathieu Desnoyers wrote:
> * Greg KH (greg@...ah.com) wrote:
> > On Tue, Mar 30, 2010 at 09:50:47AM -0400, Mathieu Desnoyers wrote:
> > > * Steven Rostedt (rostedt@...dmis.org) wrote:
> > > > On Mon, 2010-03-29 at 23:36 -0400, Mathieu Desnoyers wrote:
> > > > > * Mathieu Desnoyers (mathieu.desnoyers@...icios.com) wrote:
> > > > > > Should use per_cpu_ptr() to obfuscate the per cpu pointers (RELOC_HIDE is needed
> > > > > > for per cpu pointers).
> > > > > > 
> > > > > > Introduced by commit:
> > > > > > 
> > > > > > module.c: commit 6b588c18f8dacfa6d7957c33c5ff832096e752d3
> > > > > > 
> > > > > > This patch should be queued for the stable branch, for kernels 2.6.29.x to
> > > > > > 2.6.33.x.
> > > > > > (tested on 2.6.33.1 x86_64)
> > > > > 
> > > > > It's actually needed for mainline too (2.6.34-rc2).
> > > > 
> > > > Then all you need to do is submit it for mainline with a 
> > > > "Cc: stable@...nel.org" as you did below. It will then automatically be
> > > > added to the stable queue when Linus pulls it.
> > > 
> > > OK, thanks for the info.
> > 
> > And I need to wait until it goes into Linus's tree before it can be
> > applied to the stable tree.  This hasn't happened yet, right?
> > 
> > thanks,
> > 
> > greg k-h
> 
> Same here, for module.c fix. Feel free to choose between this fix or the
> corresponding refactoring from Tejun.

Thanks, I took this one.

greg k-h
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