Received: by 2002:a25:5b86:0:0:0:0:0 with SMTP id p128csp1002834ybb; Thu, 28 Mar 2019 17:11:21 -0700 (PDT) X-Google-Smtp-Source: APXvYqzGOO93Dq92ETnqupjKCvhsZpKBDlBIs9qCrr5z+kVIzB13zxaXHCMOJ7lSthH9Va7sdvC8 X-Received: by 2002:a17:902:2aca:: with SMTP id j68mr45969748plb.233.1553818281299; Thu, 28 Mar 2019 17:11:21 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1553818281; cv=none; d=google.com; s=arc-20160816; b=izlRN6piYc47CLoQSnf9fnX9trUvzm+vxmDBcPTsiML6WcNMaSFr6iqJyRCOnyzoRp 4AnJH1dzhzvsiQLvEGkgshRzCEV9KdLcdEYh29Sus5mCuqu/WxRQLykYQEJCCc8G3q9t X+OkzMG9Z4UFGmJy4xPB+da0JV2SgZwl3CLnoztK/ls1iaCatI7MQJpWrTeKZtQacwQB YPvVEjJG4f674sPec7RqeTgBE2kGbIbVZp74Vyd3c8RVgSuBOQUHoYOLEXx9rzwCpv/Y f4thlmDIsGU4pw9ENtBTFqzszYs7YspeJNrUdjUFcszyUjIw/E/gWMEZUub9VkeI/k2c 3fzQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:from:subject:cc:to:message-id:date; bh=IDteILwxiM7bZo8WEt3HURiZ4eeyWoWgCyMlWlc2nlE=; b=Dt2fWD5NqInAp8byFmBfSdX2HiEn/2sDDE+JK4vphJ2DYKph20zxbA9m8UxU+fFWPm ImXh0mfzByW3Aq8oz1moO0nVqZ3Qgo6VEAf97bbCzuecgVPQhFhqCug9FwrnVzhGaQ3W qdvSzivQVrQoZpOaF4U4XFPEQGLA0+MqP0rqPL1G4t84MT5gChdIudhfPHXHSBNm+cqW 3CZkrmuAA/ebzbw+ODWe/FwkXjo/ps5zB/9Bb03s9AScL90RHS8apKRapNwKg7Gq/Qaf l/C6AOwE3y9k0NvAASiMzAKeuFwvqPOH4x/LOERR7JqhgC3LGL+pMvMjqJafz2Wsd6e+ JcFg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id bj6si446517plb.365.2019.03.28.17.11.05; Thu, 28 Mar 2019 17:11:21 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728643AbfC2AKV (ORCPT + 99 others); Thu, 28 Mar 2019 20:10:21 -0400 Received: from shards.monkeyblade.net ([23.128.96.9]:59116 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727658AbfC2AKV (ORCPT ); Thu, 28 Mar 2019 20:10:21 -0400 Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::d71]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 7B8BD14D688B2; Thu, 28 Mar 2019 17:10:20 -0700 (PDT) Date: Thu, 28 Mar 2019 17:10:19 -0700 (PDT) Message-Id: <20190328.171019.1513054072749064700.davem@davemloft.net> To: aaro.koskinen@iki.fi Cc: joabreu@synopsys.com, alexandre.torgue@st.com, peppe.cavallaro@st.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, aaro.koskinen@nokia.com Subject: Re: [PATCH 0/6] net: stmmac: fix handling of oversized frames From: David Miller In-Reply-To: <20190327203540.1884-1-aaro.koskinen@iki.fi> References: <20190327203540.1884-1-aaro.koskinen@iki.fi> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Thu, 28 Mar 2019 17:10:20 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Aaro Koskinen Date: Wed, 27 Mar 2019 22:35:34 +0200 > I accidentally had MTU size mismatch (9000 vs. 1500) in my network, > and I noticed I could kill a system using stmmac & 1500 MTU simply > by pinging it with "ping -s 2000 ...". > > While testing a fix I encountered also some other issues that need fixing. > > I have tested these only with enhanced descriptors, so the normal > descriptor changes need a careful review. I really want to see some stmmac developers review and/or test these changes. Thanks.