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From: grog@lemis.de (Greg Lehey)
Organisation: LEMIS, Schellnhausen 2, 36325 Feldatal, Germany
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	id MAA23299; Tue, 28 May 1996 12:07:42 +0200
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Subject: Re: signal 4?
To: gurney_j@resnet.uoregon.edu
Date: Tue, 28 May 1996 12:07:41 +0200 (MET DST)
Cc: hackers@FreeBSD.ORG (FreeBSD Hackers)
In-Reply-To: <Pine.BSF.3.91.960527200218.976E-100000@nike.efn.org> from "John-Mark Gurney" at May 27, 96 08:09:57 pm
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John-Mark Gurney writes:
>
> what exactly is signal 4?

>From <sys/signal.h>:

#define	SIGHUP	1	/* hangup */
#define	SIGINT	2	/* interrupt */
#define	SIGQUIT	3	/* quit */
#define	SIGILL	4	/* illegal instruction (not reset when caught) */

> recently I have been getting this quite often... if it is a normal
> command that hits a sig 4 it usally hangs the machine after a few
> seconds...  could it be a memory timing problem?  or possible
> something else?
>
> I'm running a Conner CFP1060S with three cdrom drives on an Adaptec
> 2840...  also is two 4port AST compatible async cards... the ethernet
> card is a ne2000 clone...  I'm running 2.2-960323-SNAP on it....  I'm
> thinking of upgrading the machine to 2.1-STABLE but I currently don't
> have enough disk space to make it...

Doesn't ring a bell with me.  It would be interesting to see where it
hits--is the instruction really illegal?  It's not a very common
occurrence, so maybe you do have hardware problems.

Greg