From owner-freebsd-bugs  Sat Jan 19 14:10: 8 2002
Delivered-To: freebsd-bugs@hub.freebsd.org
Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21])
	by hub.freebsd.org (Postfix) with ESMTP id 8CAFB37B417
	for <freebsd-bugs@hub.freebsd.org>; Sat, 19 Jan 2002 14:10:01 -0800 (PST)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.11.6/8.11.6) id g0JMA1o73720;
	Sat, 19 Jan 2002 14:10:01 -0800 (PST)
	(envelope-from gnats)
Received: from rmstar.campus.luth.se (rmstar.campus.luth.se [130.240.197.32])
	by hub.freebsd.org (Postfix) with ESMTP id 4942537B400
	for <FreeBSD-gnats-submit@freebsd.org>; Sat, 19 Jan 2002 14:08:46 -0800 (PST)
Received: (from murduth@localhost)
	by rmstar.campus.luth.se (8.11.6/8.11.5) id g0JM8f712052;
	Sat, 19 Jan 2002 23:08:41 +0100 (CET)
	(envelope-from murduth)
Message-Id: <200201192208.g0JM8f712052@rmstar.campus.luth.se>
Date: Sat, 19 Jan 2002 23:08:41 +0100 (CET)
From: Joakim Henriksson <murduth@ludd.luth.se>
Reply-To: Joakim Henriksson <murduth@ludd.luth.se>
To: FreeBSD-gnats-submit@freebsd.org
X-Send-Pr-Version: 3.113
Subject: kern/34067: Reproducable crash on usb ugen
Sender: owner-freebsd-bugs@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-bugs.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-bugs>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-bugs>
X-Loop: FreeBSD.org


>Number:         34067
>Category:       kern
>Synopsis:       Reproducable crash on usb ugen
>Confidential:   no
>Severity:       critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jan 19 14:10:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Joakim Henriksson
>Release:        FreeBSD 4.5-RC i386
>Organization:
Universite of Lulea
>Environment:
System: FreeBSD rmstar.campus.luth.se 4.5-RC FreeBSD 4.5-RC #1: Sat Jan 19 13:47:42 CET 2002 murduth@rmstar.campus.luth.se:/usr/src/sys/compile/RMSTAR i386

Palm m500 with USB dock.

>Description:
Misusing usb a bit panics FreeBSD.

Pertinent trace from the crashdump.

#6  0xc0269e49 in usbd_free_xfer ()
#7  0xc026dacb in ugen_do_read ()
#8  0xc026dc17 in ugenread ()
#9  0xc019edc7 in spec_read ()
#10 0xc0253f48 in ufsspec_read ()
#11 0xc02545ad in ufs_vnoperatespec ()
#12 0xc019af9c in vn_read ()
#13 0xc0175274 in dofileread ()
#14 0xc017513a in read ()


>How-To-Repeat:
1) gdb coldsync
2) press hot sync button. The palm connects on ugen0.
3) coldsync does nothing so break it with ctrl-C
4) coldsync is waiting in the read system call
5) Do other stuff till the palm disconnects from the bus.
6) ctrl-d in gdb
7) The end

>Fix:

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

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