Panic in bpf, maybe related to if_xl

Hi,

My system is -CURRENT, from July 9.
I use my FreeBSD box to run natd, using the if_xl network driver
(3Com card).

I got a panic inside of bpf:

mutex Giant is not owned at /usr/src/sys/net/bpf.c:1330

#13 0xc065e610 in _mtx_assert (m=0xc0926ec0, what=0,
    file=0xc087e2e8 "/usr/src/sys/net/bpf.c", line=1330)
    at /usr/src/sys/kern/kern_mutex.c:739
#14 0xc06c8ec6 in catchpacket (d=0xc178b300, pkt=0xc17f9802 "ÿÿÿÿÿÿ",
    pktlen=393, snaplen=4294967295, cpfn=0xc080483c <bcopy>)
    at /usr/src/sys/net/bpf.c:1330
#15 0xc06c8bf0 in bpf_tap (bp=0xc16545c0, pkt=0xc17f9802 "ÿÿÿÿÿÿ", pktlen=393)
    at /usr/src/sys/net/bpf.c:1184
#16 0xc06c8cbc in bpf_mtap (bp=0xc16545c0, m=0xc17e2600)
    at /usr/src/sys/net/bpf.c:1238
#17 0xc06ceb6b in ether_input (ifp=0xc168ec00, m=0xc17e2600)
    at /usr/src/sys/net/if_ethersubr.c:572
#18 0xc07853cf in xl_rxeof (sc=0xc1691000) at /usr/src/sys/pci/if_xl.c:2068
#19 0xc07854d6 in xl_rxeof_task (arg=0xc1691000, pending=1)
    at /usr/src/sys/pci/if_xl.c:2104
#20 0xc0685182 in taskqueue_run (queue=0xc153cc00)
    at /usr/src/sys/kern/subr_taskqueue.c:217
#21 0xc068527a in taskqueue_swi_run (dummy=0x0)
    at /usr/src/sys/kern/subr_taskqueue.c:252
#22 0xc0653a10 in ithread_loop (arg=0xc153cb80)
    at /usr/src/sys/kern/kern_intr.c:545
#23 0xc0652e44 in fork_exit (callout=0xc06538f4 <ithread_loop>,
    arg=0xc153cb80, frame=0xcbff1d38) at /usr/src/sys/kern/kern_fork.c:789



I have a kernel.debug and crashdump if I can help someone debug this.

Thanks.
-- 
Craig Rodrigues        
rodrigc_at_crodrigues.org