From owner-freebsd-stable Wed Apr 24 13:42:38 1996 Return-Path: owner-stable Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id NAA21241 for stable-outgoing; Wed, 24 Apr 1996 13:42:38 -0700 (PDT) Received: from ki.net (root@ki.net [205.150.102.1]) by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id NAA21219 for ; Wed, 24 Apr 1996 13:42:31 -0700 (PDT) Received: from freebsd.ki.net (root@freebsd.ki.net [205.150.102.51]) by ki.net (8.7.4/8.7.4) with ESMTP id QAA04997; Wed, 24 Apr 1996 16:42:24 -0400 (EDT) Received: from localhost (scrappy@localhost) by freebsd.ki.net (8.7.5/8.7.5) with SMTP id OAA07257; Wed, 24 Apr 1996 14:42:58 -0400 (EDT) X-Authentication-Warning: freebsd.ki.net: scrappy owned process doing -bs Date: Wed, 24 Apr 1996 14:42:57 -0400 (EDT) From: "Marc G. Fournier" To: Michael Smith cc: stable@freebsd.org Subject: Re: 9 makes + 1 caused panic... In-Reply-To: <199604240546.PAA16508@genesis.atrad.adelaide.edu.au> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-stable@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Wed, 24 Apr 1996, Michael Smith wrote: > Marc G. Fournier stands accused of saying: > > > > I just started up 9 make processes in /usr/src/lib, and > > had just started up a 10th on /usr/src/gnu/lib when it panic'd. > > I'm using -O2 -m486 -pipe, since someone mentioned that -pipe is > > a *really* good way to brutalize the system... > > > > The panic: > > > > Fatal Trap 12: page fault while in kernel mode > > fault virtual address = 0x700c > > fault code = supervisor write, protection violation > > instruction pointer = 0x8:0xf0106ae1 > > current process = 4244 (sh) > > interrupt mask = > > kernel: type 12 trap, code=0 > > Stopped at _closef+0x85: decw 0xc(%esi) > > Hmm. Looking at closef(), the most likely candidate for this would be > > if (--fp->f_count > 0) > return (0); > > fp is dereferenced a few lines above, and I can't imagine how the structure > would have become write-protected by accident... > hardware or software bug then? :( Marc G. Fournier scrappy@ki.net Systems Administrator @ ki.net scrappy@freebsd.org