usb/117955: plugging minolta dimage a2 crashes os

[fulvio ciriaco]

>Number:         117955
>Category:       usb
>Synopsis:       plugging minolta dimage a2 crashes os
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Nov 10 08:40:01 UTC 2007
>Closed-Date:
>Last-Modified:
>Originator:     fulvio ciriaco
>Release:        7.0-beta2
>Organization:
>Environment:
FreeBSD 7.0-BETA2, GENERIC
>Description:
When I usb plug Minolta dimage A2 to my computer, it crashes and reboots.
The output of $(kgdb /boot/kernel/kernel vmcore.0) follows

[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: Unde
fined symbol "ps_pglobal_lookup"]                                               GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "i386-marcel-freebsd".

Unread portion of the kernel message buffer:
umass0: at uhub4 port 4 (addr 3) disconnected


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x0
fault code              = supervisor write, page not present
instruction pointer     = 0x20:0xc0466f4b
stack pointer           = 0x28:0xe30b59c0
frame pointer           = 0x28:0xe30b59d8
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         = 34 (usb4)
trap number             = 12
panic: page fault
cpuid = 0
Uptime: 59s
Physical memory: 1001 MB
Dumping 169 MB: 154 138 122 106 90 74 58 42 26 10

#0  doadump () at pcpu.h:195
195     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb)
>How-To-Repeat:
plug minolta dimage a2, always.
>Fix:


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