misc/99974: panic: mutex Giant not owned at /usr/src/sys/net/bpf.c:1407

[Bradley W. Dutton]

>Number:         99974
>Category:       misc
>Synopsis:       panic: mutex Giant not owned at /usr/src/sys/net/bpf.c:1407
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Jul 09 18:00:30 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     Bradley W. Dutton
>Release:        6 stable
>Organization:
>Environment:
FreeBSD backup 6.1-STABLE FreeBSD 6.1-STABLE #0: Sun Jul  9 01:31:24 PDT 2006     root at backup:/home/obj/usr/src/sys/BACKUP  i386
>Description:
panic: mutex Giant not owned at /usr/src/sys/net/bpf.c:1407
>How-To-Repeat:
Run tcpdump without any options/arguments. If I do something like specify the interface it works:
tcpdump -i sis0
but just running tcpdump immediately panics.
>Fix:

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