From owner-freebsd-hackers Tue Apr 29 00:21:27 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id AAA01429 for hackers-outgoing; Tue, 29 Apr 1997 00:21:27 -0700 (PDT) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by hub.freebsd.org (8.8.5/8.8.5) with SMTP id AAA01421 for ; Tue, 29 Apr 1997 00:21:24 -0700 (PDT) Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id JAA19064 for freebsd-hackers@freebsd.org; Tue, 29 Apr 1997 09:21:22 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.8.5/8.8.5) id JAA03299; Tue, 29 Apr 1997 09:04:37 +0200 (MET DST) Message-ID: <19970429090437.IE27356@uriah.heep.sax.de> Date: Tue, 29 Apr 1997 09:04:37 +0200 From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-hackers@freebsd.org Subject: Re: A Desparate Plea for Help... References: <199704280221.LAA13874@genesis.atrad.adelaide.edu.au> X-Mailer: Mutt 0.60_p2-3,5,8-9 Mime-Version: 1.0 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: ; from Simon Shapiro on Apr 28, 1997 08:44:34 -0700 Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Simon Shapiro wrote: > I have surrounded this code with printf's. Quite few of them. > The result was a crash with trap 9 in generic_bzero + 0x0f. This is a General Protection Fault. These are segment-register related, and since we don't use segment registers, they cannot happen. :) I've seen it on bad hardware, on some serial console DDB condition (where Bruce had some explanation for it). Maybe it's a printf-non-reentrancy issue here. > This was preceeded with several calls to _end. This means you're using some LKM (maybe involunteerely, what does `modstat' say during normal operation?). -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)