From owner-freebsd-current@FreeBSD.ORG  Fri May 15 15:29:38 2009
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id A2497106566B
	for <current@freebsd.org>; Fri, 15 May 2009 15:29:38 +0000 (UTC)
	(envelope-from mwest@zeeb.org)
Received: from zeeb.org (zeeb.org [88.198.32.244])
	by mx1.freebsd.org (Postfix) with ESMTP id 69A4C8FC15
	for <current@freebsd.org>; Fri, 15 May 2009 15:29:38 +0000 (UTC)
	(envelope-from mwest@zeeb.org)
Received: from mwest by zeeb.org with local (Exim 4.69 (FreeBSD))
	(envelope-from <mwest@zeeb.org>) id 1M4zKg-0002x9-2N
	for current@freebsd.org; Fri, 15 May 2009 16:28:22 +0100
Date: Fri, 15 May 2009 16:28:22 +0100
From: Matthew West <mwest@l.zeeb.org>
To: current@freebsd.org
Message-ID: <20090515152822.GA11144@zeeb.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.5.16 (2007-06-09)
Sender: Matthew West <mwest@zeeb.org>
Cc: 
Subject: nfsd panic, _rw_rlock()
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 15 May 2009 15:29:38 -0000

FreeBSD 8-CURRENT, built from sources around 27/02/2009:

------
Fatal trap 9: general protection fault while in kernel mode
cpuid = 3; apic id = 03
instruction pointer     = 0x8:0xffffffff80541391
stack pointer           = 0x10:0xfffffffe9df97650
frame pointer           = 0x10:0xfffffffe9df97680
code segment            = base 0x0, limit 0xfffff, type 0x1b
                       = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 2921 (nfsd)
[thread pid 2921 tid 102235 ]
Stopped at      _rw_rlock+0x11: movq    0x18(%rdi),%rax

_rw_rlock() at _rw_rlock+0x11
vfs_stdcheckexp() at vfs_stdcheckexp+0xb4
nfsrv_fhtovp() at nfsrv_fhtovp+0xd3
nfsrv_read() at nfsrv_read+0x2a7
nfssvc() at nfssvc+0x4af
syscall() at syscall+0x1e7
Xfast_syscall() at Xfast_syscall+0xab
--- syscall (155, FreeBSD ELF64, nfssvc), rip = 0x800695c4c, rsp = 0x7fffffffe8e8, rbp = 0 ---
------

The filesystem being exported over NFS is ZFS.

After running for a week, I just caught three of these.  Anyone else
seeing this?

Thanks,

Matthew