kern/131038: kernel panic in ip6_forward

[Denis Ahrens]

>Number:         131038
>Category:       kern
>Synopsis:       kernel panic in ip6_forward
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jan 27 11:30:01 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Denis Ahrens
>Release:        8.0 CURRENT
>Organization:
>Environment:
FreeBSD monolith 8.0-CURRENT FreeBSD 8.0-CURRENT #1: Tue Jan 13 06:05:02 CET 2009     root at monolith:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
my machine uses ipv6 over a tunnel. and since thepiratebay activated ipv6 it crashes very frequently in ip6_forward

/usr/src/sys/netinet6/ip6_forward.c:423
 49f:	8d 85 6c ff ff ff    	lea    0xffffff6c(%ebp),%eax
 4a5:	89 44 24 08          	mov    %eax,0x8(%esp)
 4a9:	8b 43 3c             	mov    0x3c(%ebx),%eax
 4ac:	89 44 24 04          	mov    %eax,0x4(%esp)
 4b0:	8d 45 e0             	lea    0xffffffe0(%ebp),%eax
 4b3:	89 04 24             	mov    %eax,(%esp)
 4b6:	e8 fc ff ff ff       	call   4b7 <ip6_forward+0x4b7>
 4bb:	85 c0                	test   %eax,%eax
 4bd:	74 31                	je     4f0 <ip6_forward+0x4f0>
/usr/src/sys/netinet6/ip6_forward.c:425

the machine crashes on 0x4a9 (mov 0x3c(%ebx),%eax)

>How-To-Repeat:
massive ipv6 usage
>Fix:
sorry, don't know

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