WITNESS messages on 11

[mokhi]

I'm not sure, but maybe this is related to [1].
FWIW, according to [2], LORs of witness means deadlock could be
happened in that situation (if it's not a false positive), not
necessarily an accurate deadlock happening IMO :)

I hope it helps :)

[1]http://lists.freebsd.org/pipermail/freebsd-current/2016-May/061195.html
[2]https://www.freebsd.org/doc/faq/troubleshoot.html#idp63374416

Best Regards, Mokhi.