From owner-freebsd-current@freebsd.org Mon Aug 24 12:40:16 2015 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id DC44D9C0299 for ; Mon, 24 Aug 2015 12:40:16 +0000 (UTC) (envelope-from joel@vnode.se) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id C6404D01 for ; Mon, 24 Aug 2015 12:40:16 +0000 (UTC) (envelope-from joel@vnode.se) Received: by mailman.ysv.freebsd.org (Postfix) id C56A09C0298; Mon, 24 Aug 2015 12:40:16 +0000 (UTC) Delivered-To: current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C50129C0297 for ; Mon, 24 Aug 2015 12:40:16 +0000 (UTC) (envelope-from joel@vnode.se) Received: from smtp.vnode.se (smtp.vnode.se [IPv6:2001:67c:40c:e3aa::5]) by mx1.freebsd.org (Postfix) with ESMTP id 895E2CFF; Mon, 24 Aug 2015 12:40:16 +0000 (UTC) (envelope-from joel@vnode.se) Received: from ymer.vnode.se (h71n10-th-c-d4.ias.bredband.telia.com [81.234.63.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.vnode.se (Postfix) with ESMTPSA id B196FFEC7; Sat, 22 Aug 2015 21:04:11 +0200 (CEST) Date: Sat, 22 Aug 2015 21:04:11 +0200 From: Joel Dahl To: Rick Macklem Cc: sbruno@freebsd.org, current@freebsd.org Subject: Re: Kernel panic with fresh current, probably nfs related Message-ID: <20150822190410.GA80298@ymer.vnode.se> Mail-Followup-To: Rick Macklem , sbruno@freebsd.org, current@freebsd.org References: <20150822115519.GA79434@ymer.vnode.se> <914810061.28949434.1440248260373.JavaMail.zimbra@uoguelph.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <914810061.28949434.1440248260373.JavaMail.zimbra@uoguelph.ca> User-Agent: Mutt/1.5.23 (2014-03-12) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Aug 2015 12:40:17 -0000 On Sat, Aug 22, 2015 at 08:57:40AM -0400, Rick Macklem wrote: > Joel Dahl wrote: > > Hi, > > > > I hit a kernel panic running a fresh -CURRENT today. This machine is my home > > NFS > > server and it exports src and obj to a bunch of other machines. During an > > installkernel on one of the other machines (using the src and obj exports > > from > > the NFS server) the NFS server kernel paniced. > > > > I took a quick photo of the stack backtrace, since I didn't have time to > > investigate further (but I haven't rebooted the machine yet, it's still > > sitting at the db> prompt: > > > > http://mirror.vnode.se/upload/panic001-20150822.JPG > > > > Any ideas? > > > I'm going to guess that you're using an "em" net driver, since that is the > only one that sets if_hw_tsomax > IP_MAXPACKET (65535) from what I can see. Correct, this machine is using em. I'll wait for sbruno to reply before rebooting the machine, in case anyone wants me to try anything in the debugger. -- Joel