Date: Mon, 18 Aug 2008 13:14:53 -0400 From: Mike Tancsa <mike@sentex.net> To: "Kip Macy" <kmacy@freebsd.org> Cc: Robert Watson <rwatson@freebsd.org>, freebsd-stable@freebsd.org, John Baldwin <jhb@freebsd.org> Subject: Re: HEADS UP: inpcb/inpcbinfo rwlocking: coming to a 7-STABLE branch near you Message-ID: <200808181714.m7IHEsvc067471@lava.sentex.ca> In-Reply-To: <3c1674c90808180955w665476e0s9f37321cfcfd1eed@mail.gmail.co m> References: <alpine.BSF.1.10.0808031142550.65130@fledge.watson.org> <alpine.BSF.1.10.0808180913450.881@fledge.watson.org> <200808181337.m7IDbqSC066670@lava.sentex.ca> <200808181024.40038.jhb@freebsd.org> <200808181622.m7IGM9mk067285@lava.sentex.ca> <3c1674c90808180955w665476e0s9f37321cfcfd1eed@mail.gmail.com>
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At 12:55 PM 8/18/2008, Kip Macy wrote:
>got it
Thanks. The problem manifests itself soon after boot. There is
nothing special about the box, it has 2 em network interfaces doing a
lot of sendmail as well as local recursive DNS for itself and a few
other sendmail boxes and also talks to a cluster of spam / virus
scanning machines over tcp and UDP.
---Mike
>On Mon, Aug 18, 2008 at 9:22 AM, Mike Tancsa <mike@sentex.net> wrote:
> > At 10:24 AM 8/18/2008, John Baldwin wrote:
> >
> >> > Edit src/sys/conf/files
> >> > Add delta 1.1243.2.32 2008.07.30.20.35.41 kmacy
> >> > Edit src/sys/netinet/tcp_subr.c
> >> > Add delta 1.300.2.4 2008.07.30.20.35.41 kmacy
> >> > Edit src/sys/netinet/tcp_syncache.c
> >> > Add delta 1.130.2.9 2008.07.30.20.35.41 kmacy
> >> > Add delta 1.130.2.10 2008.07.30.20.51.20 kmacy
> >> > Edit src/sys/netinet/tcp_syncache.h
> >> > Add delta 1.1.2.1 2008.07.30.20.35.41 kmacy
> >> > Edit src/sys/netinet/tcp_usrreq.c
> >> > Add delta 1.163.2.4 2008.07.30.20.35.41 kmacy
> >>
> >> These are changes by Kip to do TCP offload (181013, 181014).
> >>
> >> Given that, I think the likeliest changes to cause this are the TCP
> >> offload
> >> changes. Note that Kip later MFC'd this change which changed ARP stuff:
> >>
> >> However, I would stary by narrowing it down to see if Kip's commits cause
> >> the
> >> change.
> >
> >
> > As I dont have the skills to unwind Robert's patch, I have done the
> > following
> >
> > csup with date=2008.08.01.00.00.00
> >
> > which shows the problem. I then manually grabbed the prior versions of the
> > above files
> >
> > 0[smtp2]% ident src/sys/conf/files
> > src/sys/conf/files:
> > $FreeBSD: src/sys/conf/files,v 1.1243.2.30 2008/07/25
> 17:46:01 jhb Exp $
> > 0[smtp2]% ident src/sys/netinet/tcp_subr.c
> > src/sys/netinet/tcp_subr.c:
> > $FreeBSD: src/sys/netinet/tcp_subr.c,v 1.300.2.3 2008/07/24 01:13:22
> > julian Exp $
> > 0[smtp2]% ident src/sys/netinet/tcp_syncache.c
> > src/sys/netinet/tcp_syncache.c:
> > $FreeBSD: src/sys/netinet/tcp_syncache.c,v 1.130.2.8
> 2008/07/24 01:13:22
> > julian Exp $
> > 0[smtp2]% ident src/sys/netinet/tcp_syncache.h
> > src/sys/netinet/tcp_syncache.h:
> > $FreeBSD: src/sys/netinet/tcp_syncache.h,v 1.1 2007/07/27
> 00:57:06 silby
> > Exp $
> > 0[smtp2]% ident src/sys/netinet/tcp_usrreq.c
> > src/sys/netinet/tcp_usrreq.c:
> > $FreeBSD: src/sys/netinet/tcp_usrreq.c,v 1.163.2.3 2008/03/01 11:50:00
> > rwatson Exp $
> > 0[smtp2]%
> >
> > All is OK. So it looks like the above introduced the bug.
> >
> > ---Mike
> >
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