From owner-freebsd-net@freebsd.org Mon Jun 25 21:08:24 2018 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 20BDB101FAC3; Mon, 25 Jun 2018 21:08:24 +0000 (UTC) (envelope-from dch@skunkwerks.at) Received: from out2-smtp.messagingengine.com (out2-smtp.messagingengine.com [66.111.4.26]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id C0C528E10B; Mon, 25 Jun 2018 21:08:23 +0000 (UTC) (envelope-from dch@skunkwerks.at) Received: from compute7.internal (compute7.nyi.internal [10.202.2.47]) by mailout.nyi.internal (Postfix) with ESMTP id 0E19821C7B; Mon, 25 Jun 2018 17:08:23 -0400 (EDT) Received: from web6 ([10.202.2.216]) by compute7.internal (MEProxy); Mon, 25 Jun 2018 17:08:23 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=skunkwerks.at; h=content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to:x-me-sender:x-me-sender:x-sasl-enc; s= fm2; bh=wdyxopV2/yPDqGpnLKk8UEs7FJ/WIdEWC5iaAuLC1v0=; b=ohLGEkrZ 5oJAZWyUXzD01TRi8PiB0EoxsC0XXpJadRQN5T7vM0tdUT5fizR49tqPwOBJ13As X6Dt+AjWbBh3mdd9sDv0VbvK9dEe6QD95nGc+joDtB7Kkj4+uAafwsAs8Fp1/0ap kpOu036hYiqMqZckzATsLOcByzidgLJpA05Ovb1rnalRNvop+ZkcV8Q24sb1HFn0 xG6Opfk7LufMTPXOBtB4xi81BvKWP2jN9mMn1nwu4om0ymPnqq0ffME1/z0gYpei uo9pPILUFE9+Gm+IVSUC7ilQxqpn4p/igvy2ECKkX3WZ8RDq2S5gxuY4OJu7MRgO VbryTAnCsIBETA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:message-id:mime-version:subject:to:x-me-sender :x-me-sender:x-sasl-enc; s=fm3; bh=wdyxopV2/yPDqGpnLKk8UEs7FJ/WI dEWC5iaAuLC1v0=; b=fO3P12+qaBS4GHP6yB3VNSSuvD/887JWUWZRs3tIT5WvG byfBUIimRnSzjIEAUwZb/d/1GC22QwFLUMoPYxCDcd1wGPBFX0V9C8Fa5ApRvFlA Z4fUE6p/hwChweekk227oo/1uyJR0VGpUDG67svq9g1kJIt+JWdVhLlOaPIjx5TK sYLxOm3DJbKX4llE8hkB6CUzntLG7r2s3l5uGT1Jpy6uYgXQUrwvj/NYQjRCw8Oa bzrx30Eqj+r92MPqbHnuuuVTIStip0G99cEvTow4v7rZSetai+jJQuki1Uj4xhe6 L+ph/JwExhhyBugZENnIvPuN7hkXMNokkIF9Vukhw== X-ME-Proxy: X-ME-Sender: Received: by mailuser.nyi.internal (Postfix, from userid 99) id A37984136; Mon, 25 Jun 2018 17:08:22 -0400 (EDT) Message-Id: <1529960902.613046.1420067144.3B445531@webmail.messagingengine.com> From: Dave Cottlehuber To: freebsd-current@freebsd.org, freebsd-net@freebsd.org MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" X-Mailer: MessagingEngine.com Webmail Interface - ajax-0d8ea36c Date: Mon, 25 Jun 2018 23:08:22 +0200 Subject: unloading pf causes desktop system to freeze since ~ r335381 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Jun 2018 21:08:24 -0000 [cross-posting for advice on general debugging + network-specific thoughts] TLDR since a week or so, probably around r335381 I can reliably get my machine to hang*** by unloading pf, while there's network traffic (e.g. video streaming or rsync) and waiting a minute or two I still see it with r335576 a few times today. config & logs below, h/w is intel xeon v2667v4 on supermicro X10SRA-F dual igb nics. However each time there's no crashdump, & the usual ctrl-alt-esc does't work either. I'm a bit lost as to what I can do here to capture something useful. A few minutes later, the machine spontaneously reboots, I assume due to a h/w watchdog kicking up, and there is no crashdump info present in /var/crash/ as I'd normally expect. ***hang means simultaneously: - keyboard is unresponsive (capslock/numlock keys don't cause keyboard LEDs to toggle state) - control-alt-esc doesn't work to get to the debugger - music playing via mpd to an external USB DAC stops - network sessions & tap interfaces fail - X session contents freeze but remain visible Is there some way I can get a kernel dump even though the system has fully hung? - dmesg, rc.conf, ifconfig, sysctls etc https://git.io/f4HQZ - supermicro X10SRA-F bios v2.0a settings https://git.io/f4HQb A+ Dave