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Date:      Mon, 14 Dec 1998 06:55:39 +0100 (CET)
From:      List User <listuser@netspace.net.au>
To:        freebsd-current@FreeBSD.ORG
Message-ID:  <199812140555.GAA08973@doorway.home.lan>

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From: Peter Jeremy <peter.jeremy@auss2.alcatel.com.au>
Subject: Re: panic: getnewbuf inconsistent EMPTY queue in 3.0-RELEASE
Received: by border.alcanet.com.au id <40406>; Mon, 14 Dec 1998 15:07:29 +1100
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Date: Mon, 14 Dec 1998 04:07:58 GMT

On Fri Dec  4 07:47:27 1998, I wrote:
>I've just upgraded a Dell OptiPlex GXi from 32MB to 96MB.  When I
>increase MAXUSERS from 20 to 40 and SEMMNU from 350 to 1000, the
>system panics `getnewbuf: inconsistent EMPTY queue, qindex=0'
>immediately after the message `changing root device to wd0s1a'.

I've managed to track this down to a bug in the handling of SysV
semaphore undo structures when non-default SEMxxx values are used.
Look up kern/9068 for details.

Peter
--
Peter Jeremy (VK2PJ)                    peter.jeremy@alcatel.com.au
Alcatel Australia Limited
41 Mandible St                          Phone: +61 2 9690 5019
ALEXANDRIA  NSW  2015                   Fax:   +61 2 9690 5247

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