em(4): discard frame w/o packet header (82547L on Supermicro X7SPA-H) on stable/8

[Xin LI]

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Hi,

I have got a bit of em0: discard frame w/o packet header (and sometimes
em1) and the system panics sometimes, the network traffic is not quite
large.  This is fairly fresh stable/8 running under amd64, with pf,
altq, openvpn (tun mode) and ipv6 enabled.

So far I haven't found a way to reliably trigger the panic though.
 Because of the watchdog  (the system is now on production) setting the
system doesn't seem to be able to complete a minidump, will try textdump
and see if it works.

Suggestion on debugging?  Is this a known (fixed?) issue by the way?

Cheers,
- -- 
Xin LI <delphij at delphij.net>	http://www.delphij.net/
FreeBSD - The Power to Serve!	       Live free or die
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