Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753217Ab3J2VVt (ORCPT ); Tue, 29 Oct 2013 17:21:49 -0400 Received: from ja.ssi.bg ([178.16.129.10]:58885 "EHLO ja.home.ssi.bg" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751929Ab3J2VVr (ORCPT ); Tue, 29 Oct 2013 17:21:47 -0400 Date: Tue, 29 Oct 2013 23:21:24 +0200 (EET) From: Julian Anastasov X-X-Sender: ja@ja.home.ssi.bg To: Hannes Frederic Sowa cc: Meelis Roos , Linux Kernel list , netdev@vger.kernel.org, steffen.klassert@secunet.com Subject: Re: 3.12-rc7 regression - network panic from ipv6 In-Reply-To: <20131029210758.GA18323@order.stressinduktion.org> Message-ID: References: <20131029210758.GA18323@order.stressinduktion.org> User-Agent: Alpine 2.03 (LFD 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1408 Lines: 40 Hello, On Tue, 29 Oct 2013, Hannes Frederic Sowa wrote: > On Tue, Oct 29, 2013 at 10:33:36PM +0200, Meelis Roos wrote: > > Some bad news - in a system where 3.12-rc6 and earlier worked fine, > > 3.12-rc7 panics or hangs repeatedly with network traffic (torrent being > > good test). First there is BUG from ipv6 code, followed by panic. > > Could you do a bisect on this? There seems to be one commit for this > particular function _decode_session6: > > commit bafd4bd4dcfa13145db7f951251eef3e10f8c278 > Author: Steffen Klassert > Date: Mon Sep 9 10:38:38 2013 +0200 > > xfrm: Decode sessions with output interface. > > The output interface matching does not work on forward > policy lookups, the output interface of the flowi is > always 0. Fix this by setting the output interface when > we decode the session. > > Maybe try to just revert this change locally and try again? At first look this change can work only for forwarding, for output the skb_dst is attached later in icmpv6_push_pending_frames. May be a check for present skb_dst is needed. Regards -- Julian Anastasov -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/