usb/133390: umass crashes system in 7.1 when Olympus D-540 attached, worked in previous versions

[Lars Eighner]

>Number:         133390
>Category:       usb
>Synopsis:       umass crashes system in 7.1 when Olympus D-540 attached, worked in previous versions
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Apr 05 02:40:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Lars Eighner
>Release:        7.1-RELEASE-p2
>Organization:
self
>Environment:
FreeBSD debranded.6dollardialup.com 7.1-RELEASE-p2 FreeBSD 7.1-RELEASE-p2 #1: Sat Jan 24 19:02:57 CST 2009     toor at debranded.6dollardialup.com:/usr/obj/usr/src/sys/JAN09  i386
>Description:
When Olympus camera D-540 Zoom is attached, umass causes Fatal Trap 12.  This did not occur with some previous release, which worked perfectly, presented camera as a da device which could be mounted as a FAT (msdos) file system.
>How-To-Repeat:
Happens every time with custom kernel (omitting umass, umass loaded manually after boot), with umass loaded from loader.conf, and with GENERIC kernel.
>Fix:
I need to know how far back I need to downgrade to get to a pre-broken umass.

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