From owner-freebsd-hackers@FreeBSD.ORG Sun Feb 8 13:39:24 2009 Return-Path: Delivered-To: hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C7315106578B; Sun, 8 Feb 2009 13:39:24 +0000 (UTC) (envelope-from peter@vk2pj.dyndns.org) Received: from fallbackmx06.syd.optusnet.com.au (fallbackmx06.syd.optusnet.com.au [211.29.132.8]) by mx1.freebsd.org (Postfix) with ESMTP id 565958FC19; Sun, 8 Feb 2009 13:39:23 +0000 (UTC) (envelope-from peter@vk2pj.dyndns.org) Received: from mail17.syd.optusnet.com.au (mail17.syd.optusnet.com.au [211.29.132.198]) by fallbackmx06.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id n189HRv8015816; Sun, 8 Feb 2009 20:17:29 +1100 Received: from test71.vk2pj.dyndns.org (c122-106-216-167.belrs3.nsw.optusnet.com.au [122.106.216.167]) by mail17.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id n189Gv6d006676 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 8 Feb 2009 20:16:58 +1100 X-Bogosity: Ham, spamicity=0.000000 Received: from test71.vk2pj.dyndns.org (localhost.vk2pj.dyndns.org [127.0.0.1]) by test71.vk2pj.dyndns.org (8.14.3/8.14.3) with ESMTP id n189GuDa064604; Sun, 8 Feb 2009 20:16:56 +1100 (EST) (envelope-from peter@test71.vk2pj.dyndns.org) Received: (from peter@localhost) by test71.vk2pj.dyndns.org (8.14.3/8.14.3/Submit) id n189GuxW064603; Sun, 8 Feb 2009 20:16:56 +1100 (EST) (envelope-from peter) Date: Sun, 8 Feb 2009 20:16:56 +1100 From: Peter Jeremy To: Danny Braniss Message-ID: <20090208091656.GA31876@test71.vk2pj.dyndns.org> References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="jI8keyz6grp/JLjh" Content-Disposition: inline In-Reply-To: X-PGP-Key: http://members.optusnet.com.au/peterjeremy/pubkey.asc User-Agent: Mutt/1.5.18 (2008-05-17) X-Mailman-Approved-At: Sun, 08 Feb 2009 15:51:46 +0000 Cc: hackers@freebsd.org, freebsd-stable@freebsd.org Subject: Re: impossible packet length ... X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 Feb 2009 13:39:25 -0000 --jI8keyz6grp/JLjh Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2009-Feb-08 10:45:13 +0200, Danny Braniss wrote: >Feb 6 18:00:13 warhol-00.cs.huji.ac.il kernel: bce0: discard frame w/o=20 >leading ethernet header (len 0 pkt len 0) =2E.. >Feb 6 19:00:00 warhol-00.cs.huji.ac.il amd[715]: Unknown $ sequence in=20 >"rhost:=3D${RHOST};type:=3Dnfsl;fs:=3D${FS};rfs:=3D$huldig#^ZM-^KoM- a= base" >Feb 6 19:00:00 warhol-00.cs.huji.ac.il kernel: impossible packet length= =20 >(2068989523) from nfs server sunfire:/dist > >which seems to point fingers at bce... It does rather suggest that bce is not behaving. What happens if you turn off checksum off-loading? This should make the kernel drop the corrupt packets instead of trying to process them. If practical, you could also try (temporarily) plugging in a different NIC. --=20 Peter Jeremy --jI8keyz6grp/JLjh Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.10 (FreeBSD) iEYEARECAAYFAkmOowgACgkQ/opHv/APuIezPgCZAfCn11OW1g/XoLQ7O0NXfWNe Re4AoIij1aRiYCYM+YTXlg01ZPtDrUVa =Qm+c -----END PGP SIGNATURE----- --jI8keyz6grp/JLjh--