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Date:      Sat, 8 Apr 2006 09:52:35 -0400
From:      "Rong-En Fan" <grafan@gmail.com>
To:        "Kris Kennaway" <kris@obsecurity.org>
Cc:        Jun Kuriyama <kuriyama@imgsrc.co.jp>, stable@freebsd.org
Subject:   Re: rpc.lockd brokenness (2)
Message-ID:  <6eb82e0604080652s651eeba8q7b8219f093db9f6a@mail.gmail.com>
In-Reply-To: <20060408060634.GA4187@xor.obsecurity.org>
References:  <7mveururc6.wl%kuriyama@imgsrc.co.jp> <6eb82e0604072228o601b44e2n2d8a718d0b33664f@mail.gmail.com> <20060408060634.GA4187@xor.obsecurity.org>

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On 4/8/06, Kris Kennaway <kris@obsecurity.org> wrote:
> On Sat, Apr 08, 2006 at 01:28:55AM -0400, Rong-En Fan wrote:
> > On 3/6/06, Jun Kuriyama <kuriyama@imgsrc.co.jp> wrote:
> > >
> > > I'm not yet received enough information to track rpc.lockd problem.
> > >
> > > As Kris posted before, here is a patch to backout my suspected
> > > commit.  If someone can easily reproduce this problem, please try wit=
h
> > > this patch on both of server/client side of rpc.lockd (I'm not sure
> > > which of server/client side this affects).
> > >
> > > http://www.freebsd.org/cgi/query-pr.cgi?pr=3Dkern/80389
> > > http://www.freebsd.org/cgi/query-pr.cgi?pr=3Dkern/84953
> > >
> > > Any reports about this patch (OK or still problem) are welcome!
> >
> > Hi,
> >
> > Somehow I have problems with lockd after 3 boxes upgraded from
> > Feb's RELENG_6 to Apr 6's. One of them has problems with lockd.
> > For example, mutt and irssi will stuck in lockd (shown by
> > top). I tried to back out changes in revision 1.18 for lock_proc.c,
> > and do /etc/rc.d/nfslocking stop then a start. After backout it,
> > mutt and irssi work well. If I put 1.18 back, mutt and irssi will stuck
> > in lockd again.
> >
> > Last month, I played with the test program/script in those two PRs,
> > found that revision 1.18 does not make any difference. I'm not 100%
> > sure the problem I encountered now is related to rev 1.18. But
> > it is a report that  backout 1.18 really helps.
> >
> > For record, all my clients involved in this mail are running RELENG_6.
> > Server is RELENG_5 as of March 9. Only IPv4 here, no IPv6.
>
> 1.18 was merged 15 months ago, so it cannot be the cause if you
> updated from Feb 2006.

Yes , I know that. But how to explain that after back-out 1.18
and restart rpc.lockd, my mutt and irssi will work. And putting
it back, they dont work? I tried backing out and putting back
three times. And, if I simply restart lockd, it does not help.

Rong-En Fan



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