From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guillaume Nault Subject: Re: 4.6.3, pppoe + shaper workload, skb_panic / skb_push / ppp_start_xmit Date: Mon, 8 Aug 2016 23:05:41 +0200 Message-ID: <20160808210541.GI3031@alphalink.fr> References: <20160728110948.GA3046@alphalink.fr> <20160801205908.GD3031@alphalink.fr> <0776d5f55356ba0ed4400d46e5e52088@nuclearcat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Cong Wang , Linux Kernel Network Developers To: Denys Fedoryshchenko Return-path: Received: from zimbra.alphalink.fr ([217.15.80.77]:52731 "EHLO zimbra.alphalink.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750929AbcHHVFp (ORCPT ); Mon, 8 Aug 2016 17:05:45 -0400 Content-Disposition: inline In-Reply-To: <0776d5f55356ba0ed4400d46e5e52088@nuclearcat.com> Sender: netdev-owner@vger.kernel.org List-ID: On Mon, Aug 08, 2016 at 02:25:00PM +0300, Denys Fedoryshchenko wrote: > On 2016-08-01 23:59, Guillaume Nault wrote: > > Do you still have the vmlinux file with debug symbols that generated > > this panic? > Sorry for delay, i didn't had same image on all servers and probably i found > cause of panic, but still testing on several servers. > If i remove SFQ qdisc from ppp shapers, servers not rebooting anymore. > Thanks for the feedback. I wonder which interactions between SFQ and PPP can lead to this problem. I'll take a look. > But still i need around 2 days to make sure that's the reason. > Okay, just let me know if you can confirm that removing SFQ really solves the problem.