usb/77184: kernel panic on USB device disconnect

[Yuri]

>Number:         77184
>Category:       usb
>Synopsis:       kernel panic on USB device disconnect
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Feb 06 23:50:19 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Yuri
>Release:        5.3-STABLE
>Organization:
NA
>Environment:
FreeBSD xxx.xxx.org 5.3-STABLE FreeBSD 5.3-STABLE #1: Sun Feb  6 03:08:18 PST 2005     root at xxx.xxx.org:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
I connected Sony F828 camera (unsupported currently), and disconnected after a stall. Got kernel panic. Even if device is unknown should be no panic whenever you connect/disconnect it.

-- screen messages --
 -- first message was
umass0: Sony F828 connected ...(lost here)
 -- after a while:
umass0: CBI reset failed, STALLED
umass0: CBI bulk-in stall clear failed, STALLED
umass0: CBI bulk-out stall clear failed, STALLED

 -- here I disconnected the camera

Fatal trap 18: integer divide fault while in kernel mode
instruction pointer       = 0x8:0xc07c42d3
stack pointer             = 0x10:0xe51a17d8
frame pointer             = 0x10:0xe51a1860
code segment              = base 0x0, limit 0xfffff, type=0x1b
                          = DPL 0, pres 1, def32 1, gran 1
processor eflags          = interrupt enabled, resume, IOPL = 0
current process           = 44 (swi3:cambio)
trap number               = 18
panic: integer divide fault

>How-To-Repeat:
Buy Sony-F828, connect to FreeBSD :)
>Fix:
NA
>Release-Note:
>Audit-Trail:
>Unformatted: