kern/96583: Freeze after trying to 'mv' a file from a rw-mounted NTFS partition

[Kris Kennaway]

The following reply was made to PR kern/96583; it has been noted by GNATS.

From: Kris Kennaway <kris at obsecurity.org>
To: Tobias Mohrlueder <tobias.m81 at web.de>
Cc: freebsd-gnats-submit at FreeBSD.org
Subject: Re: kern/96583: Freeze after trying to 'mv' a file from a rw-mounted NTFS partition
Date: Mon, 1 May 2006 17:21:57 -0400

 On Mon, May 01, 2006 at 01:01:18PM +0000, Tobias Mohrlueder wrote:
 > 
 > >Number:         96583
 > >Category:       kern
 > >Synopsis:       Freeze after trying to 'mv' a file from a rw-mounted NTFS partition
 > >Confidential:   no
 > >Severity:       non-critical
 > >Priority:       low
 > >Responsible:    freebsd-bugs
 > >State:          open
 > >Quarter:        
 > >Keywords:       
 > >Date-Required:
 > >Class:          sw-bug
 > >Submitter-Id:   current-users
 > >Arrival-Date:   Mon May 01 13:10:12 GMT 2006
 > >Closed-Date:
 > >Last-Modified:
 > >Originator:     Tobias Mohrlueder
 > >Release:        6.1-RC
 > >Organization:
 > >Environment:
 > FreeBSD box.lan 6.1-RC FreeBSD 6.1-RC #3: Thu Apr 27 22:11:54
 > CEST 2006 tobiasmo at box.lan:/usr/obj/usr/src/sys/CUSTOM i386
 > >Description:
 > I have experienced a freeze when trying to "mv some_file" from an NTFS
 > partition to my home directory. It happens both with my custom kernel
 > and with GENERIC.
 > 
 > It prints out the error message and after that any action which
 > requires hard disk access just hangs.
 > >How-To-Repeat:
 > 'mv file' from a rw-mounted NTFS partition to any FreeBSD directory.
 > >Fix:
 > Mount any NTFS partition read-only.
 
 Please configure DDB according to the instructions in the developers
 handbook, as well as INVARIANTS, INVARIANT_SUPPORT, DEBUG_VFS_LOCKS,
 WITNESS and DEBUG_LOCKS in your kernel.  Then run the following DDB
 commands when the system hangs:
 
 show lockedvnods
 
 ps
 
 alltrace (or at least 'trace <pid>' for each value of <pid> listed in
 show lockedvnods)
 
 and provide the resulting output (screen capture/serial console
 log/etc).
 
 Kris