From owner-freebsd-current@FreeBSD.ORG Mon Sep 8 17:15:04 2014 Return-Path: Delivered-To: current@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 722824CF for ; Mon, 8 Sep 2014 17:15:04 +0000 (UTC) Received: from mouf.net (mouf.net [IPv6:2607:fc50:0:4400:216:3eff:fe69:33b3]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mouf.net", Issuer "mouf.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 3731D1CDD for ; Mon, 8 Sep 2014 17:15:04 +0000 (UTC) Received: from mouf.net (swills@mouf [199.48.129.64]) by mouf.net (8.14.5/8.14.5) with ESMTP id s88HEsEv034453 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Mon, 8 Sep 2014 17:14:59 GMT (envelope-from swills@mouf.net) Received: (from swills@localhost) by mouf.net (8.14.5/8.14.5/Submit) id s88HEsa5034452 for current@FreeBSD.org; Mon, 8 Sep 2014 17:14:54 GMT (envelope-from swills) Date: Mon, 8 Sep 2014 17:14:54 +0000 From: Steve Wills To: current@FreeBSD.org Subject: network hang using intel em nic Message-ID: <20140908171451.GB18604@mouf.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (mouf.net [199.48.129.64]); Mon, 08 Sep 2014 17:14:59 +0000 (UTC) X-Spam-Status: No, score=0.0 required=4.5 tests=none autolearn=unavailable version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on mouf.net X-Virus-Scanned: clamav-milter 0.98.1 at mouf.net X-Virus-Status: Clean X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 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, 08 Sep 2014 17:15:04 -0000 Hi, I've got some new hardware and have been experiencing lockups using the em driver. They seem to only happen on large downloads, smaller things like ssh and web browsing work OK. The hardware is: em0@pci0:0:25:0: class=0x020000 card=0x309f17aa chip=0x153a8086 rev=0x04 hdr=0x00 vendor = 'Intel Corporation' device = 'Ethernet Connection I217-LM' class = network subclass = ethernet bar [10] = type Memory, range 32, base 0xf7c00000, size 131072, enabled bar [14] = type Memory, range 32, base 0xf7c3d000, size 4096, enabled bar [18] = type I/O Port, range 32, base 0xf080, size 32, enabled I did have the vboxnet driver loaded, but tried unloading that and still saw the issue. One thing I notice is some garbage at the top of the screen when the hang happens, perhaps there's a conflict with the vesa video. (This system is Haswell, using the vga/vesa driver.) Any suggestions on how to debug? Thanks, Steve