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From: John Baldwin <jhb@freebsd.org>
To: Adrian Chadd <adrian@freebsd.org>
Subject: Re: ixgbe(4) spin lock held too long
Date: Sat, 18 Oct 2014 07:35:44 -0400
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Cc: Sean Bruno <sbruno@llnw.com>, FreeBSD Net <freebsd-net@freebsd.org>,
 Jason Wolfe <nitroboost@gmail.com>
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On Friday, October 17, 2014 11:43:26 PM Adrian Chadd wrote:
> Hm, is this the bug that was just fixed in -HEAD?
> 
> I saw this similar bug on -HEAD with lots of quick connections and
> reused ports. It ended up deferencing a NULL tcp timer pointer from
> the inpcb. Is that what the code in your tree is doing?

This is not a NULL tcp timer pointer.  Instead, the retransmit timer is being 
armed while the persist timer is still armed.

-- 
John Baldwin