From owner-freebsd-net@freebsd.org Thu May 25 20:46:36 2017 Return-Path: Delivered-To: freebsd-net@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 482DCD82E03 for ; Thu, 25 May 2017 20:46:36 +0000 (UTC) (envelope-from freebsd@omnilan.de) Received: from mx0.gentlemail.de (mx0.gentlemail.de [IPv6:2a00:e10:2800::a130]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id BCF7A1262 for ; Thu, 25 May 2017 20:46:35 +0000 (UTC) (envelope-from freebsd@omnilan.de) Received: from mh0.gentlemail.de (mh0.gentlemail.de [78.138.80.135]) by mx0.gentlemail.de (8.14.5/8.14.5) with ESMTP id v4PKkXeW055335; Thu, 25 May 2017 22:46:33 +0200 (CEST) (envelope-from freebsd@omnilan.de) Received: from titan.inop.mo1.omnilan.net (titan.inop.mo1.omnilan.net [IPv6:2001:a60:f0bb:1::3:1]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mh0.gentlemail.de (Postfix) with ESMTPSA id 83DBC1ED; Thu, 25 May 2017 22:46:33 +0200 (CEST) Message-ID: <592742A8.4010207@omnilan.de> Date: Thu, 25 May 2017 22:46:32 +0200 From: Harry Schmalzbauer Organization: OmniLAN User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; de-DE; rv:1.9.2.8) Gecko/20100906 Lightning/1.0b2 Thunderbird/3.1.2 MIME-Version: 1.0 To: Vincenzo Maffione CC: freebsd-net Subject: Re: [panic] netmap(4) and if_lagg(4) References: <58CBCD7A.8060301@omnilan.de> <58CC23F5.7060507@omnilan.de> <58CFA394.8070901@omnilan.de> <5926EE96.1010000@omnilan.de> <5926F9F9.4040706@omnilan.de> <592701D6.7030301@omnilan.de> In-Reply-To: <592701D6.7030301@omnilan.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Greylist: ACL 129 matched, not delayed by milter-greylist-4.2.7 (mx0.gentlemail.de [78.138.80.130]); Thu, 25 May 2017 22:46:33 +0200 (CEST) X-Milter: Spamilter (Reciever: mx0.gentlemail.de; Sender-ip: 78.138.80.135; Sender-helo: mh0.gentlemail.de; ) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 May 2017 20:46:36 -0000 Bezüglich Harry Schmalzbauer's Nachricht vom 25.05.2017 18:09 (localtime): > Bezüglich Vincenzo Maffione's Nachricht vom 25.05.2017 17:56 (localtime): >> I see the bug is in FreeBSD 11. I attached the simple patch to fix it. >> Can someone commit the patch to 11/stable? >> >> Harry: You should be able to workaround the bug by setting >> >> # sysctl dev.netmap.generic_rings=1 > I'll recompile with your patch, thanks a lot! Hi, unfortunately I can't confirm it to be fixed. The kgdb output is exactly the same: (kgdb) list *0xffffffff80426714 0xffffffff80426714 is in generic_rx_handler (/usr/local/share/deploy-tools/RELENG_11/src/sys/dev/netmap/netmap_generic.c:628). 623 struct netmap_adapter *na = NA(ifp); 624 struct netmap_generic_adapter *gna = (struct netmap_generic_adapter *)na; 625 u_int work_done; 626 u_int rr = MBUF_RXQ(m); // receive ring number 627 628 if (rr >= na->num_rx_rings) { 629 rr = rr % na->num_rx_rings; // XXX expensive... 630 } 631 632 /* limit the size of the queue */ Current language: auto; currently minimal Will double-check tomorrow that the binary really includes your patch. Ofcourse I checked briefly and revision and buildtime check affirms it. best, -harry