amd64/154214: Panic when creating stf interface

[John Baldwin]

On Friday, January 21, 2011 7:24:08 pm Vladislav V. Prodan wrote:
> 
> >Number:         154214
> >Category:       amd64
> >Synopsis:       Panic when creating stf interface
> >Confidential:   no
> >Severity:       serious
> >Priority:       high
> >Responsible:    freebsd-amd64
> >State:          open
> >Quarter:        
> >Keywords:       
> >Date-Required:
> >Class:          sw-bug
> >Submitter-Id:   current-users
> >Arrival-Date:   Sat Jan 22 00:30:08 UTC 2011
> >Closed-Date:
> >Last-Modified:
> >Originator:     Vladislav V. Prodan
> >Release:        9.0-CURRENT  amd64
> >Organization:
> >Environment:
> FreeBSD mary-teresa.ZZZ 9.0-CURRENT FreeBSD 9.0-CURRENT #0: Sun Aug 29 
19:00:25 EEST 2010     vlad11 at mary-teresa.ZZZ:/usr/obj/usr/src/sys/mary-
teresa.24  amd64
> 
> >Description:
> After entering the command "ifconfig stf create" - we panic
> 
> # kldstat -v | grep stf
>                 226 if_stf
> 
> On the internal interface are given two networks ipv6 - /64 and /48.
> Service works rtadvd.
> Wanted to create a service 6to4.
> 
> http://img521.imageshack.us/img521/8142/dsc00571in.jpg

The picture shows a double fault (likely due to infinite recursion on the 
stack or some code putting too large of an object onto the stack).  Can you 
get a backtrace via 'tr' at the db> prompt and reply with the output?

-- 
John Baldwin