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Date: Tue, 24 Feb 2015 16:43:46 -0800
From: John-Mark Gurney <jmg@funkthat.com>
To: Willem Jan Withagen <wjw@digiware.nl>
Subject: Re: Unexpected crash
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Willem Jan Withagen wrote this message on Mon, Feb 23, 2015 at 12:55 +0100:
> Came home last night to find out that my ZFS fileserver has rebooted....
> 
> Dmesg is loaded with sonewconn messages....
> And after a while the system thinks it is enough...
> ---
> Panic String: deadlkres: possible deadlock detected for 
> 0xfffff800133f9000, blocked for 1800789 ticks
> ----

[...]

> FreeBSD 10.1-STABLE #101 r276583: Sat Jan  3 06:51:10 CET 2015
>      root@zfs.digiware.nl:/home/obj/amd64/usr/srcs/src10/src/sys/ZFS amd64
> FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512

Upgrade your kernel:
https://svnweb.freebsd.org/base?view=revision&revision=278800

This change will probably fix your panic...

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."