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Date:      Sun, 27 Sep 1998 00:24:40 +0100 (BST)
From:      Doug Rabson <dfr@nlsystems.com>
To:        "Justin T. Gibbs" <gibbs@plutotech.com>
Cc:        alpha@FreeBSD.ORG
Subject:   Re: Possible problem with wait syscall handling...
Message-ID:  <Pine.BSF.4.01.9809270023090.845-100000@herring.nlsystems.com>
In-Reply-To: <199809262003.OAA06853@pluto.plutotech.com>

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On Sat, 26 Sep 1998, Justin T. Gibbs wrote:

> Ken started up a buildworld on our Miata last night, but perhaps 40
> minutes later, the machine started locking up.  Ping worked, but
> old network connections were frozen and new network connections blocked
> after the initial connection.  When I came in today and dropped into DDB,
> I found that almost every process on the box was sleeping on "wait".
> I continued and broke back into DDB two or three more times and suddenly
> the machine un-froze.  Very bizarre.  Assuming I can reproduce this, 
> anyone have any ideas where I should start poking around to determine
> the cause?

Thats an odd one.  I haven't seen anything like that but it looks like a
lost wakeup somewhere in vmio.  I think Eivind just found one lurking in
ufs_readwrite so maybe its fixable.

--
Doug Rabson				Mail:  dfr@nlsystems.com
Nonlinear Systems Ltd.			Phone: +44 181 951 1891
					Fax:   +44 181 381 1039


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