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 for <linuxppc-dev@lists.ozlabs.org>; Fri,  3 May 2013 03:02:43 +1000 (EST)
Date: Thu, 2 May 2013 12:02:25 -0500
From: Scott Wood <scottwood@freescale.com>
Subject: Re: [PATCH net-next] af_unix: fix a fatal race with bit fields
To: Alan Modra <amodra@gmail.com>
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In-Reply-To: <20130501035425.GD5221@bubble.grove.modra.org> (from
 amodra@gmail.com on Tue Apr 30 22:54:25 2013)
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Cc: Eric Dumazet <eric.dumazet@gmail.com>, netdev <netdev@vger.kernel.org>,
 Ambrose Feinstein <ambrose@google.com>, Paul Mackerras <paulus@samba.org>,
 Anton Blanchard <anton@samba.org>, linuxppc-dev@lists.ozlabs.org,
 David Miller <davem@davemloft.net>
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On 04/30/2013 10:54:25 PM, Alan Modra wrote:
> On Tue, Apr 30, 2013 at 07:24:20PM -0700, Eric Dumazet wrote:
> > 	li 11,1
> > 	ld 0,0(9)
> > 	rldimi 0,11,31,32
> > 	std 0,0(9)
> > 	blr
> > 	.ident	"GCC: (GNU) 4.6.3"
> >
> > You can see "ld 0,0(9)" is used : its a 64 bit load.
>=20
> Yup.  This is not a powerpc64 specific problem.  See
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D52080
> Fixed in 4.8.0 and 4.7.3.

FWIW (especially if a GCC version check is added), it seems to have =20
been fixed as far back as 4.7.1, not just 4.7.3.

-Scott=