Re: [PATCH] tcp: fix setting csum_start in tcp_gso_segment

From: Dave Jones
Date: Wed Jun 25 2014 - 10:11:56 EST


On Tue, Jun 24, 2014 at 09:17:25PM -0700, Linus Torvalds wrote:
> On Tue, Jun 24, 2014 at 9:03 PM, Tom Herbert <therbert@xxxxxxxxxx> wrote:
> >
> > It looks like a likely culprit is that SKB_GSO_CB()->csum_start is
> > not set correctly when doing non-scatter gather. We are using
> > offset as opposed to doffset.
> >
> > Reported-by: Dave Jones <davej@xxxxxxxxxx>
>
> DaveJ, I think you triggered this in five minutes on your box, and I
> don't recall seeing anybody else reporting the oops (and google
> doesn't find anything in the last month). So it's presumably somewhat
> hw-specific. Does this fix the problem?

It's survived routing ~1GB of packets overnight, so I'd call this good.

thanks Tom.

Dave

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