From owner-freebsd-bugs  Tue Apr 25 19:32:45 1995
Return-Path: bugs-owner
Received: (from majordom@localhost)
          by freefall.cdrom.com (8.6.10/8.6.6) id TAA01358
          for bugs-outgoing; Tue, 25 Apr 1995 19:32:45 -0700
Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.2.228.34])
          by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id TAA01331
          for <freebsd-bugs@freefall.cdrom.com>; Tue, 25 Apr 1995 19:31:29 -0700
Received: (from bde@localhost) by godzilla.zeta.org.au (8.6.9/8.6.9) id MAA00711; Wed, 26 Apr 1995 12:26:16 +1000
Date: Wed, 26 Apr 1995 12:26:16 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199504260226.MAA00711@godzilla.zeta.org.au>
To: freebsd-bugs@freefall.cdrom.com, pb@fasterix.freenix.fr
Subject: Re: kern/363: page fault in sio.c:sioioctl soon after boot (+ suggested fix)
Sender: bugs-owner@FreeBSD.org
Precedence: bulk

>>Synopsis:       page fault in sio.c soon after boot (+ suggested fix)
>...
>	out-of-the-box April 12th snapshot.

>>Description:

>page fault line 1296 in sioioctl() :

>sio.c:
>  1293		com = com_addr(MINOR_TO_UNIT(mynor));
>  1294		iobase = com->iobase;
>  1295		tp = com->tp;
>->1296		term = tp->t_termios;
>  1297		oldcmd = cmd;

This bug was introduced on April 11 and fixed on April 13.

>Note that there seems to be a workaround : access /dev/ttydX before
>/dev/tty[il]X, using comcontrol for example (as in rc.serial, which may
>explain why the bug has gone unnoticed).

I wondered why it when unnoticed for as long as one day :-).  I saw it
for a mouse port - in rc.serial, comcontrol is called for terminals and
modems but not for mouses.

Bruce