Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932252AbaLATO3 (ORCPT ); Mon, 1 Dec 2014 14:14:29 -0500 Received: from mx1.redhat.com ([209.132.183.28]:56033 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753784AbaLATO1 (ORCPT ); Mon, 1 Dec 2014 14:14:27 -0500 Message-ID: <547CBE0D.8010501@redhat.com> Date: Mon, 01 Dec 2014 20:14:21 +0100 From: Daniel Borkmann User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: =?UTF-8?B?Um9iZXJ0IMWad2nEmWNraQ==?= CC: linux-sctp@vger.kernel.org, linux-kernel@vger.kernel.org, vyasevich@gmail.com Subject: Re: panic in skb_push via sctp References: <547CA719.6060101@redhat.com> <547CAEA3.3090906@redhat.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/01/2014 08:00 PM, Robert Święcki wrote: > 2014-12-01 19:08 GMT+01:00 Daniel Borkmann : >> >>> Thanks for looking into it. I can try with your patch, but no >>> guarantees that the fuzzer will hit the same condition in some >>> reasonable time-frame. Will get back in some time with results. >> >> Ok, thanks! >> >>> PS. If you think it's possible to create a repro (userland code) which >>> can trigger this, I can give it a try. >> >> Did by accident trinity create tunnels? It looks that upper layer >> protocols (except SCTP) all allocate and reserve MAX_HEADER to >> accommodate enough head room in worst case for possible tunnels. > > Not sure, but I run it inside a pid/ipc/uts/etc/user-namespaces where > it operates with a full set of capabilities, so most of the SOCK_RAW > and tunnel-like-creating calls succeed, so maybe.. Ok thanks, can you post your .config? -- 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/