From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from zimbra.alphalink.fr ([217.15.80.77]:58044 "EHLO zimbra.alphalink.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750798AbeBWKHN (ORCPT ); Fri, 23 Feb 2018 05:07:13 -0500 Date: Fri, 23 Feb 2018 11:07:10 +0100 From: Guillaume Nault To: Denys Fedoryshchenko Cc: Cong Wang , Linux Kernel Network Developers , netdev-owner@vger.kernel.org Subject: Re: ppp/pppoe, still panic 4.15.3 in ppp_push Message-ID: <20180223100710.GF1322@alphalink.fr> References: <20180214172549.GH1422@alphalink.fr> <20180215155517.GI1422@alphalink.fr> <79ba31ea47137ca539beea112bec8e57@nuclearcat.com> <20180215193114.GK1422@alphalink.fr> <20180222183038.GD1322@alphalink.fr> <336f2012881f89f2b86b29a853c5a672@nuclearcat.com> <20180223093851.GE1322@alphalink.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Fri, Feb 23, 2018 at 11:41:43AM +0200, Denys Fedoryshchenko wrote: > On 2018-02-23 11:38, Guillaume Nault wrote: > > On Thu, Feb 22, 2018 at 08:51:19PM +0200, Denys Fedoryshchenko wrote: > > > I'm using accel-ppp that has unit-cache option, i guess for > > > "reusing" ppp > > > interfaces (because creating a lot of interfaces on BRAS with 8k > > > users quite > > > expensive). > > > Maybe it is somehow related and can be that scenario causing this bug? > > > > > Indeed, it'd be interesting to know if unit-cache is part of the > > equation (if it's workable for you to disable it). > Already did that and testing, unfortunately i had to disable KASAN and full > refcount, as performance hit is too heavy for me. I will try to enable KASAN > alone tomorrow. > Don't hesitate to post the result even if you can't afford enabling KASAN.