From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sander Eikelenboom Subject: Re: kernel BUG at net/core/skbuff.c:2839 RIP [] skb_segment+0x6b2/0x6d0 Date: Thu, 21 Nov 2013 16:46:18 +0100 Message-ID: <4310398001.20131121164618@eikelenboom.it> References: <1287049824.20131117201744@eikelenboom.it> <1392359825.20131121130027@eikelenboom.it> <1385043004.10637.34.camel@edumazet-glaptop2.roam.corp.google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: Francois Romieu , netdev@vger.kernel.org, "David S. Miller" To: Eric Dumazet Return-path: Received: from vserver.eikelenboom.it ([84.200.39.61]:50538 "EHLO smtp.eikelenboom.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750827Ab3KUPq1 (ORCPT ); Thu, 21 Nov 2013 10:46:27 -0500 In-Reply-To: <1385043004.10637.34.camel@edumazet-glaptop2.roam.corp.google.com> Sender: netdev-owner@vger.kernel.org List-ID: Thursday, November 21, 2013, 3:10:04 PM, you wrote: > On Thu, 2013-11-21 at 13:00 +0100, Sander Eikelenboom wrote: >> Hello Sander, >> >> Sunday, November 17, 2013, 8:17:44 PM, you wrote: >> >> > Hi Eric, >> >> > With the linux-net changes from this merge window i get the kernel panic below (not with 3.12.0). >> >> > It's on a machine running Xen, 2x rtl8169 nic, and using a bridge for guest networking. >> > This panic in the host kernel only seems to occur when generating a lot of network traffic to and from a guest. >> >> > I tried reverting "tcp: gso: fix truesize tracking" 0d08c42cf9a71530fef5ebcfe368f38f2dd0476f, but that didn't help. >> Hi Eric and Francois, >> >> I have tested some more: >> >> First tried with switching off GSO and GRO on the bridge, this didn't help. >> Then i only switched off GRO on eth0 (r8169) and left the bridge alone. That helped to prevent the oops. >> >> Below the output of ethtool -k for the bridge and eth0 after boot (so the default situation) with which the oops occurs. >> And the part of dmesg where the r8169 get initialized on boot (there are 2, eth0 and eth1). > As mentioned earlier, this problem is known and a patch is under review. > http://marc.info/?l=linux-netdev&m=138419594024851&w=2 > Thanks Ok seems to work for me! Thx, Sander