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Date:      Sat, 14 Sep 2002 19:50:39 -0700
From:      Kris Kennaway <kris@obsecurity.org>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        "Andrew P. Lentvorski" <bsder@mail.allcaps.org>, Matthew Jacob <mjacob@feral.com>, current@freebsd.org
Subject:   Re: NFS lock failure (was Re: FreeBSD 5.0 as a desktop 'failure' report)
Message-ID:  <20020915025039.GA2139@xor.obsecurity.org>
In-Reply-To: <20020915012837.GA943@xor.obsecurity.org>
References:  <20020914202747.GB74535@xor.obsecurity.org> <20020914171333.M91535-100000@mail.allcaps.org> <20020915012837.GA943@xor.obsecurity.org>

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On Sat, Sep 14, 2002 at 06:28:37PM -0700, Kris Kennaway wrote:
> On Sat, Sep 14, 2002 at 05:51:32PM -0700, Andrew P. Lentvorski wrote:
> > Folks,
> >=20
> > Could someone *please* take a look at the NFS lock packets *on the wire=
*?
> > Without this, it becomes significantly harder to debug the failure.
>=20
> Well, there's also the apparent problem of a non-blocking flock()
> operation blocking on the named pipe..but thanks for your suggestions,
> I'll go and try them out now.

I see pretty much the same problem when running the test suite against
localhost; the locking test blocks in fcntl() when it shouldn't be.

 89182 tlock    0.000507 RET   write 44/0x2c
 89182 tlock    0.000071 CALL  fcntl(0x7,0x7,0xbfbff680)
 89182 tlock    0.000025 NAMI  "/var/run/lock"
 89183 tlock    1.568295 RET   read RESTART
 89182 tlock    0.000152 RET   fcntl RESTART

#define F_GETLK         7               /* get record locking information */

It looks like something is wrong with file locking.

Kris

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