bpf kernel crash

[Ian Lepore]

On Mon, 2012-06-04 at 17:31 +0300, Michael Pounov wrote:
> Kernel crash when you wish to change interface name from vlan0 to other name
> 
> It seems to be in arrival/departure events.
> 
> 1) when I set up vlan0 and change name to mgmt and after that destroy mgmt.
>  kernel crash in bpfdetach() at line 2495. where it tries to find interface structure.
> 2) when I setup vlan0, change name to mgmt and set ip address. After few seconds 
>  kernel crash in vlan_transmit() at line 1029. where it tries to push mbufs to bpf interface, but it is NULL.
> 

It sounds like that might be the same problem as this, maybe the same
patch will fix it for you...

http://lists.freebsd.org/pipermail/freebsd-current/2012-June/034408.html

-- Ian