K 10
svn:author
V 7
thompsa
K 8
svn:date
V 27
2005-08-30T20:30:44.000000Z
K 7
svn:log
V 655
MFC: if_bridge, r1.20

> Fix a panic in softclock() if the interface is destroyed with a bpf consumer
> attached.
>
> This is caused by bpf_detachd clearing IFF_PROMISC on the interface which does
> a SIOCSIFFLAGS ioctl. The problem here is that while the interface has been
> stopped, IFF_UP has not been cleared so IFF_UP != IFF_DRV_RUNNING, this causes
> the ioctl function to init() the interface which resets the callouts.
>
> The destroy then completes and frees the softc but softclock will panic on a
> dead callout pointer.
>
> Ensure ifp->if_flags matches reality by clearing IFF_UP when we destroy.

Approved by:	re (kensmith), mlaier (mentor)

END