From owner-freebsd-current Sat Aug 29 04:09:11 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id EAA16989 for freebsd-current-outgoing; Sat, 29 Aug 1998 04:09:11 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from indigo.ie (ts01-017.dublin.indigo.ie [194.125.134.27]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id EAA16983 for ; Sat, 29 Aug 1998 04:09:00 -0700 (PDT) (envelope-from rotel@indigo.ie) Received: (from nsmart@localhost) by indigo.ie (8.8.8/8.8.7) id MAA00638; Sat, 29 Aug 1998 12:01:24 +0100 (IST) (envelope-from rotel@indigo.ie) From: Niall Smart Message-Id: <199808291101.MAA00638@indigo.ie> Date: Sat, 29 Aug 1998 12:01:24 +0000 In-Reply-To: <199808290127.BAA02277@word.smith.net.au>; Mike Smith Reply-To: rotel@indigo.ie X-Files: The truth is out there X-Mailer: Mail User's Shell (7.2.6 beta(3) 11/17/96) To: Mike Smith , Alexander Litvin Subject: Re: encountered possible VM bug ? Cc: current@FreeBSD.ORG Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Aug 29, 1:27am, Mike Smith wrote: } Subject: Re: encountered possible VM bug ? > > On Fri, Aug 28, 1998 at 01:19:08AM +0000, Mike Smith wrote: > > > > Reading symbols from /usr/libexec/ld.so...done. > > > > Reading symbols from /usr/lib/aout/libc.so.3.1...done. > > > > > > > > Error accessing memory address 0x0: Bad address. > > > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > > > What exactly does that line mean? When I attach to not deseased dummy_daemon, > > > > it does not appear, instead I see: > > > > > > It means that the instruction pointer obtained for the process is 0, > > > which is invalid. > > I was wrong; it means that at some point gdb has attempted to read from > address 0, which is invalid, and it can't proceed. You would have to > manually examine the core file to work out what's going on; I would > guess that it's damaged somewhere. It might be finding a 0x0 where it thinks the saved eip is (usually ebp + 4) Try "x (ebp + 4)". Niall -- Niall Smart, rotel@indigo.ie. Amaze your friends and annoy your enemies: echo '#define if(x) if (!(x))' >> /usr/include/stdio.h To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message