From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jovi Zhangwei Subject: Re: kernel warning in tcp_fragment Date: Fri, 31 Jul 2015 11:04:46 -0700 Message-ID: References: <20150727231947.GC2832181@devbig242.prn2.facebook.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Cc: Eric Dumazet , Neal Cardwell , netdev@vger.kernel.org, davem@davemloft.net, Alexey Kuznetsov , jmorris@namei.org, yoshfuji@linux-ipv6.org, Patrick McHardy , FB Kernel Team To: Martin KaFai Lau Return-path: Received: from mail-lb0-f181.google.com ([209.85.217.181]:34733 "EHLO mail-lb0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752604AbbGaSEs convert rfc822-to-8bit (ORCPT ); Fri, 31 Jul 2015 14:04:48 -0400 Received: by lbqc9 with SMTP id c9so25437599lbq.1 for ; Fri, 31 Jul 2015 11:04:47 -0700 (PDT) In-Reply-To: <20150727231947.GC2832181@devbig242.prn2.facebook.com> Sender: netdev-owner@vger.kernel.org List-ID: Hi Eric, Would you like share your thought on this bug? great thanks. On Mon, Jul 27, 2015 at 4:19 PM, Martin KaFai Lau wrote: > On Wed, Jul 22, 2015 at 11:55:35AM -0700, Jovi Zhangwei wrote: >> Sorry for disturbing, our production system(3.14 and 3.18 stable >> kernel) have many tcp_fragment warnings, >> the trace is same as below one which you discussed before. >> >> https://urldefense.proofpoint.com/v1/url?u=http://comments.gmane.org/gmane.linux.network/365658&k=ZVNjlDMF0FElm4dQtryO4A%3D%3D%0A&r=%2Faj1ZOQObwbmtLwlDw3XzQ%3D%3D%0A&m=fQUME5h%2FYY3oZjXbnLC3z6TaEEcTBSCAji4PkNqFjq8%3D%0A&s=1527f3221a6f31cba9544e5ddaa20986aafe8be8c898b42c7e9ce5e68d3803d8 >> >> But I didn't found the final solution in that mail thread, do you have >> any new ideas or patches on this warning? > > I think the following points to the last discussion. We are currently using a > similar patch: > http://comments.gmane.org/gmane.linux.network/366549 > > Eric, any update on your findings? or you have already pushed a fix? > > Thanks, > --Martin