Xref: utzoo comp.unix.wizards:9387 comp.bugs.4bsd:833
Path: utzoo!attcan!uunet!husc6!purdue!umd5!mimsy!chris
From: chris@mimsy.UUCP (Chris Torek)
Newsgroups: comp.unix.wizards,comp.bugs.4bsd
Subject: Re: 4.2bsd memall mfind crash
Message-ID: <11969@mimsy.UUCP>
Date: 15 Jun 88 09:00:02 GMT
References: <339@algol.spp2.UUCP>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 21

In article <339@algol.spp2.UUCP> urban@spp2.UUCP (Michael Urban) writes:
>We have recently added some additional disk drives to a Vax 11/780
>running 4.2bsd (yeah, I know, I know).  We have since been crashing
>on a "memall mfind" panic about once a day.  At first I thought the
>problem was that we were mounting 17 file systems with NMOUNT set to
>only 15, but increasing NMOUNT to 20 failed to alleviate the problem.

Did you also change cmap.h, and then (as that necessitates) locore.s?

>I note that the clause in memall that is producing the crash is a
>patch that was added (four years ago!) to alleviate another panic, the
>vaguely remembered MUNHASH bug.  

That was a workaround for a compiler bug.

>Does anyone know what the problem is here, and how to fix it?

Switch to 4.3BSD.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
Domain:	chris@mimsy.umd.edu	Path:	uunet!mimsy!chris