usb/132036: page fault when connecting Olympus C740 camera

[David Johnson]

>Number:         132036
>Category:       usb
>Synopsis:       page fault when connecting Olympus C740 camera
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Feb 24 01:10:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     David Johnson
>Release:        7.1-STABLE
>Organization:
>Environment:
FreeBSD radagast.usermode.org 7.1-STABLE FreeBSD 7.1-STABLE #1: Sun Feb 15 14:58:30 PST 2009     david at radagast.usermode.org:/usr/obj/usr/src/sys/RADAGAST  i386
>Description:
FreeBSD page faults and panics when connecting an Olympus C740 camera. This happens every time on two separate systems with 7.1-STABLE. I have had this camera a few years, and this is new behavior. It was definitely not doing this the last time I connected the camera in November with 7.0-RELEASE.

>From log/messages:

Feb 23 16:27:06 radagast root: Unknown USB device: vendor 0x07b4 product 0x0105
bus uhub4
Feb 23 16:27:06 radagast kernel: umass0: <OLYMPUS C740UZ, class 0/0, rev 1.10/0.
01, addr 2> on uhub4

>From crash/info.0:

Dump header from device /dev/ad8s1b
  Architecture: i386
  Architecture Version: 2
  Dump Length: 239534080B (228 MB)
  Blocksize: 512
  Dumptime: Mon Feb 23 16:27:06 2009
  Hostname: radagast.usermode.org
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 7.1-STABLE #1: Sun Feb 15 14:58:30 PST 2009
    david at radagast.usermode.org:/usr/obj/usr/src/sys/RADAGAST
  Panic String: page fault
  Dump Parity: 2507188485
  Bounds: 0
  Dump Status: good

I can provide a core if necessary.
>How-To-Repeat:
Connect camera to USB port.
>Fix:


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