From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9080EC282D7 for ; Tue, 5 Feb 2019 20:28:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5F5A62080F for ; Tue, 5 Feb 2019 20:28:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="olpYjZc8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729871AbfBEU2r (ORCPT ); Tue, 5 Feb 2019 15:28:47 -0500 Received: from mail-pg1-f194.google.com ([209.85.215.194]:46676 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726114AbfBEU2p (ORCPT ); Tue, 5 Feb 2019 15:28:45 -0500 Received: by mail-pg1-f194.google.com with SMTP id w7so1871256pgp.13 for ; Tue, 05 Feb 2019 12:28:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=020xWWcKea+BMSehIHa6DRXuInx37F6mluyf2oTgXX0=; b=olpYjZc8u4wsUjpxuJX5W+zN7Ik9uNO53jEXHBIneK9+TUVDgFePXuyJ/7djDNQORv Ai87evjnt15FcfUNHE49QL3XdjVTd3zbQEbzGZZ5HnTWQHSJJJNOIDBj9zj+wG4CnY2A cf08waPWVSEpVuqYxvIqLaYUMX4e/5/hzckumK5diIaVjUvmoDxYpPHsEsfOEDk/sSWT AsTwt/8SwUdmrmjCLBF3GEbNKNHRUj1rgE4L47RMKkmT3YVoMy7VdAEgEortnEQFKCLn Iy7qDc0Qf90pDqKDlXDWz5W/AiEgt2KCrR1gXD0N3/3gZu9qFvLPopoHKu6p7pYei3Nb eZaQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=020xWWcKea+BMSehIHa6DRXuInx37F6mluyf2oTgXX0=; b=Qg/WuaRWZ6/g3wV4eeBxXnp70QO5hm3qgPbVFQbMXvkAFndIqr9wCYXEITJ1Tnq3f5 Kd9bWkT0YeCSA4AEA3UiAVPmFfeyk1mJgkoKOh+DR4AxmH/EhFJOvVwa+/DSxN0fgax7 7h6SbTu/9TydWksUbtatShLHYdTk7YRQ8MER7+3+V9xzDvSIIc1z/zgP1N1kB4rhUwCZ AODpMfhvtwktkYb/JcvcDW8S5rfD2/1+vIWQ6YtkWI87n+lEwVE1r6Jfav1iJG2f2wdA 6ILHiUdyG0XdMdUk1+B9nK9+mK+MLBSRL/GyMnD1DAZEXrmZAFr80tE+UBGNk1Qqtn7Y ph1w== X-Gm-Message-State: AHQUAuYN1jBN8FsgvC1bttNEcJeIXD53RzWHI6tESLbY7lD4seeI79FJ EwCB/DJreloXuspjKhpfSXQvPhlI X-Google-Smtp-Source: AHgI3IbhCV8hTgHZtU1UrHRDBmaBii3yzhiTcOLSpakREFK9GopLHVrT6Me906Be+OXvaOlRc98a5A== X-Received: by 2002:a63:be0a:: with SMTP id l10mr1495524pgf.292.1549398524206; Tue, 05 Feb 2019 12:28:44 -0800 (PST) Received: from ?IPv6:2620:15c:2c1:200:55c7:81e6:c7d8:94b? ([2620:15c:2c1:200:55c7:81e6:c7d8:94b]) by smtp.gmail.com with ESMTPSA id f13sm5696122pfa.132.2019.02.05.12.28.43 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Feb 2019 12:28:43 -0800 (PST) Subject: Re: Kernel panic in eth_header To: Andrew , Netdev References: <18c17dde-5963-4412-2e98-ba44953f0ddd@seti.kr.ua> <19716555-3522-cbdd-a128-e2ec672f89cd@gmail.com> <16f5a810-f183-2874-c67d-d490f70f7bf6@gmail.com> <189be8e7-7126-06bf-67bf-53d56ea0723c@seti.kr.ua> From: Eric Dumazet Message-ID: <7c2280ea-27dc-667f-78b4-e7eaaf97d337@gmail.com> Date: Tue, 5 Feb 2019 12:28:42 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <189be8e7-7126-06bf-67bf-53d56ea0723c@seti.kr.ua> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 02/05/2019 12:21 PM, Andrew wrote: > I think that backport will be trivial - at least patch lays smoothly on 4.9 (just with offsets difference). > > I'll test it. > > Btw, maybe there's a some test conditions to quickly check if patch helps? Crash is reproducible with unpredictable interval (tens of hours of quite heavy load). > Build your kernel with CONFIG_KASAN=y Then run the tests Peter wrote. 4c3510483d26420d2c2c7cc075ad872286cc5932 selftests: net: ip_defrag: cover new IPv6 defrag behavior 3271a4821882a64214acc1bd7b173900ec70c9bf selftests: net: fix/improve ip_defrag selftest bccc17118bcf3c62c947361d51760334f6602f43 selftests/net: add ipv6 tests to ip_defrag selftest 02c7f38b7ace9f1b2ddb7a88139127eef4cf8706 selftests/net: add ip_defrag selftest