linux-kernel - RE: Oops: 17 SMP ARM (v3.16-rc2)

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Message-ID: <3FFB61A7A8473C49831AF20FA193534A43CB69F6@ALVA-EXMB01.alv.autoliv.int>
Date:	Mon, 30 Jun 2014 12:30:57 +0000
From:	Fredrik Noring <fredrik.noring@...oliv.com>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
CC:	Mattis Lorentzon <Mattis.Lorentzon@...oliv.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: RE: Oops: 17 SMP ARM (v3.16-rc2)

Hi Russell,

It seems to be a compiler issue, where (GCC) 4.8.2 does not produce a properly
working kernel. Happily, (Fedora 2013.11.24-2.fc19) 4.8.1 appears to do a lot
better. No crashes so far with v3.16-rc2!

All the best,
Fredrik

> -----Original Message-----
> Hi Fredrik,
> 
> On Fri, Jun 27, 2014 at 04:16:57PM +0000, Fredrik Noring wrote:
> > Please find below a trace that appeared once with 3.16-rc2. Perhaps it
> > is of some interest?
> 
> It's not that serious... I know that the FEC ethernet driver is horrendously
> racy (I have had a patch set for about the last six months which fixes some of
> its problems) but as I've had a lot of patches to deal with, and it's been
> pushed to the back of the queue...
> 
> The races don't lead to data corruption though, merely timeouts and some
> lost packets.
> 
> Now because things have changed during the last merge window, I've got an
> even bigger problem sorting through that patch set and getting it back into a
> submittable state.  I've just sent out v2 for it onto the
> netdev@...r.kernel.org mailing list.
> 
> The initial version (marked RFC) attracted very little interest from testers, or
> acks.  I'd very much like to have some testing of it, so if you want to try it
> out, I can provide you with a git URL, patches or a combined patch.
> 
> --
> FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
> improving, and getting towards what was expected from it.
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