usb/134299: Kernel Panic plugging in MF626 USB UMTS Stick u3g

[Paul Gültekin]

>Number:         134299
>Category:       usb
>Synopsis:       Kernel Panic plugging in MF626 USB UMTS Stick u3g
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed May 06 19:20:02 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Paul Gültekin
>Release:        7.2
>Organization:
>Environment:
FreeBSD ghostrunner 7.2-RELEASE FreeBSD 7.2-RELEASE #0: Fri May  1 08:49:13 UTC 2009     root at walker.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386

>Description:
After plugging in the USB Dongle (with loaded u3g.ko) the Kernel panics.

Dumpinfo:
Dump header from device /dev/ad4s1b
  Architecture: i386
  Architecture Version: 2
  Dump Length: 211591168B (201 MB)
  Blocksize: 512
  Dumptime: Wed May  6 20:29:17 2009
  Hostname: ghostrunner
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 7.2-RELEASE #0: Fri May  1 08:49:13 UTC 2009
    root at walker.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
  Panic String: page fault
  Dump Parity: 2540482635
  Bounds: 3
  Dump Status: good

----------
usbdevs Output bevor plugging in 

 addr 1: OHCI root hub, nVidia
  addr 2: USB-PS/2 Optical Mouse, Logitech
  addr 3: HP Integrated Module, Broadcom Corp
 addr 1: EHCI root hub, nVidia
  addr 2: product 0x6560, vendor 0x04b4
   addr 3: USB 2.0 Camera, Sonix Technology Co., Ltd.
   addr 4: USB TouchController, eGalax INC.
  addr 5: ZTE CDMA Technologies MSM, ZTE,Incorporated

-----------

The Stick seems to be detected as CDROM:
 <ZTE USB SCSI CD-ROM 2.31>         at scbus4 target 0 lun 0 (pass1,cd1)

in this State, loading the u3g.ko will cause an kernel panic.

After sending a EJECT with camcontrol 

 (root at ghostrunner) [/var/crash]# camcontrol eject cd1                     
 Unit stopped successfully, Media ejected

the Stick appears as Cardreader
 <ZTE MMC Storage 2.31>             at scbus4 target 0 lun 0 (pass1,da0)


in this State, loading the u3g.ko will NOT cause an kernel panic.






>How-To-Repeat:
After plugging in the USB Device MF626 with loaded u3g.ko
or load u3g.ko with plugged in USB Device MF626
>Fix:


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