From owner-freebsd-hackers Mon Feb 10 10:50:42 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id KAA17594 for hackers-outgoing; Mon, 10 Feb 1997 10:50:42 -0800 (PST) Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.211]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id KAA17586 for ; Mon, 10 Feb 1997 10:50:34 -0800 (PST) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id LAA27070; Mon, 10 Feb 1997 11:45:50 -0700 From: Terry Lambert Message-Id: <199702101845.LAA27070@phaeton.artisoft.com> Subject: Re: Bus Errors To: cmott@srv.net (Charles Mott) Date: Mon, 10 Feb 1997 11:45:50 -0700 (MST) Cc: freebsd-hackers@FreeBSD.ORG In-Reply-To: from "Charles Mott" at Feb 9, 97 05:48:27 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > What does "Bus error" mean? "The memory bus reference was out of allowable address space" In general, since page 0 is not mapped, it will typically mean that you have dereferenced a null pointer. Probably by relying on the historical behaviour of strcat/strcpy/etc.. In all cases, it's a pointer error of one kind or another, though it could just as easily result from stack or array bounds based corruption of a pointer value, as it could from some error with the pointer usage itself. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.