From owner-freebsd-bugs  Tue Nov 16  4: 0: 6 1999
Delivered-To: freebsd-bugs@freebsd.org
Received: from freefall.freebsd.org (freefall.FreeBSD.ORG [204.216.27.21])
	by hub.freebsd.org (Postfix) with ESMTP id A4607151F4
	for <freebsd-bugs@FreeBSD.org>; Tue, 16 Nov 1999 04:00:01 -0800 (PST)
	(envelope-from gnats@FreeBSD.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.9.3/8.9.2) id EAA11742;
	Tue, 16 Nov 1999 04:00:01 -0800 (PST)
	(envelope-from gnats@FreeBSD.org)
Received: by hub.freebsd.org (Postfix, from userid 32767)
	id AF1DD15202; Tue, 16 Nov 1999 03:51:36 -0800 (PST)
Message-Id: <19991116115136.AF1DD15202@hub.freebsd.org>
Date: Tue, 16 Nov 1999 03:51:36 -0800 (PST)
From: okimoto@mrit.mei.co.jp
To: freebsd-gnats-submit@freebsd.org
X-Send-Pr-Version: www-1.0
Subject: kern/14918: Write access to write protected media causes system panic.
Sender: owner-freebsd-bugs@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.org


>Number:         14918
>Category:       kern
>Synopsis:       Write access to write protected media causes system panic.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Nov 16 04:00:01 PST 1999
>Closed-Date:
>Last-Modified:
>Originator:     Yoshiyuki OKIMOTO
>Release:        3.3-RELEASE
>Organization:
Matsushita Research Institute Tokyo, Inc.
>Environment:
FreeBSD sango 3.3-RELEASE FreeBSD 3.3-RELEASE #1: Tue Nov  2 12:20:21 JST 1999     root@sango:/usr/src/sys/compile/SANGO  i386

>Description:
If you mount write protected removable media (FD, PD,..) 
without read-only option, and write something, 
and un-mount, then system panics. This is dangerous,
because I sometimes forget un-protecting these media.

Linux mount automatically adds read-only option, when 
mounting write protected media. This is safe...

>How-To-Repeat:
1) mount write protected removable media.
2) write something this media.
3) un-mount this media.
>Fix:
How about adding read-only mount option automatically
like Linux mount.

>Release-Note:
>Audit-Trail:
>Unformatted:


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message