From owner-freebsd-current Wed Jul 28 16:10:34 1999 Delivered-To: freebsd-current@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [209.157.86.2]) by hub.freebsd.org (Postfix) with ESMTP id 7FF081556A for ; Wed, 28 Jul 1999 16:10:31 -0700 (PDT) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.9.3/8.9.1) id QAA64183; Wed, 28 Jul 1999 16:09:06 -0700 (PDT) (envelope-from dillon) Date: Wed, 28 Jul 1999 16:09:06 -0700 (PDT) From: Matthew Dillon Message-Id: <199907282309.QAA64183@apollo.backplane.com> To: "David E. Cross" Cc: Bill Paul , current@FreeBSD.ORG, crossd@cs.rpi.edu Subject: Re: IRIX 6.5.4 NFS v3 TCP client + FreeBSD server = bewm References: <199907282304.TAA94454@cs.rpi.edu> Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG :This is yet another problem that we have run into here. If you check the :digest for -hackers it was reported awhile ago (mike smith even cc-ed it :to security since it may have been a kernel stack overflow) . Anyway, the :problem is that IRIX defaults to 32K packets on TCP NFSv3 mounts, and :16K on UDP NFSv3 mounts. I recommend using UDP and setting rsize=8192, :wsize=8192 in your amd maps (as we do now, no problems at all). : :-- :David Cross | email: crossd@cs.rpi.edu :Systems Administrator/Research Programmer | Web: http://www.cs.rpi.edu/~crossd Ah ha! Yes, 32K packets will certainly screw up NFS under FreeBSD. We need to fix that panic to have it simply drop the packet, I guess. -Matt Matthew Dillon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message