From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: ipgre rss is broken since gro Date: Sat, 8 Dec 2012 18:01:40 -0800 Message-ID: References: <504C9EFCA2D0054393414C9CB605C37F1BFB80B2@SJEXCHMB06.corp.ad.broadcom.com> <504C9EFCA2D0054393414C9CB605C37F1BFB80D8@SJEXCHMB06.corp.ad.broadcom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: "netdev@vger.kernel.org" To: Dmitry Kravkov Return-path: Received: from mail-ie0-f176.google.com ([209.85.223.176]:36596 "EHLO mail-ie0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932228Ab2LICBl (ORCPT ); Sat, 8 Dec 2012 21:01:41 -0500 Received: by mail-ie0-f176.google.com with SMTP id 13so5307262iea.35 for ; Sat, 08 Dec 2012 18:01:41 -0800 (PST) In-Reply-To: <504C9EFCA2D0054393414C9CB605C37F1BFB80D8@SJEXCHMB06.corp.ad.broadcom.com> Sender: netdev-owner@vger.kernel.org List-ID: On Sat, Dec 8, 2012 at 3:31 PM, Dmitry Kravkov wrote: > Here is the trace for a while: > > BUG: unable to handle kernel NULL pointer dereference at (null) > IP: [] skb_gro_receive+0xbe/0x5a0 Hi Dmitry NULL pointer deref probably fixed on net tree (or Linus tree) by http://git.kernel.org/?p=linux/kernel/git/davem/net.git;a=commit;h=c3c7c254b2e8cd99b0adf288c2a1bddacd7ba255 For the GRO stuff and RSS, I wonder if skbs have a property that makes them dropped somewhere, you might try drop_monitor / drop_watch