From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <dev-bounces@dpdk.org> Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id EA278A0487 for <public@inbox.dpdk.org>; Tue, 2 Jul 2019 22:07:25 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 613C11BDE0; Tue, 2 Jul 2019 22:07:25 +0200 (CEST) Received: from mails1n0-route0.email.arizona.edu (mails1n0-route0.email.arizona.edu [128.196.130.69]) by dpdk.org (Postfix) with ESMTP id B46A631FC for <dev@dpdk.org>; Tue, 2 Jul 2019 22:07:23 +0200 (CEST) IronPort-SDR: DvIEsZ5Shj4gG0v4LJhC/+Crn3Vr0bUBK0+VDvDlnLP6DO/BlKF1pmHfICeRNMFQvey8PwHIHF 1cSatK24/QHA== IronPort-PHdr: =?us-ascii?q?9a23=3AB+WlhBNNLnDZrsFJcs4l6mtUPXoX/o7sNwtQ0K?= =?us-ascii?q?IMzox0K/z5p8bcNUDSrc9gkEXOFd2Cra4d0ayM4+u5BTNIyK3CmUhKSIZLWR?= =?us-ascii?q?4BhJdetC0bK+nBN3fGKuX3ZTcxBsVIWQwt1Xi6NU9IBJS2PAWK8TW94jEIBx?= =?us-ascii?q?rwKxd+KPjrFY7OlcS30P2594HObwlSizexfK1+IA+ooQjSucUanIRvJ6QswR?= =?us-ascii?q?bVv3VEfPhby3l1LlyJhRb84cmw/J9n8ytOvv8q6tBNX6bncakmVLJUFDspPX?= =?us-ascii?q?w7683trhnDUBCA5mAAXWUMkxpHGBbK4RfnVZrsqCT6t+592C6HPc3qSL0/RD?= =?us-ascii?q?qv47t3RBLulSwKLCAy/n3JhcNsjaJbuBOhqAJ5w47Ie4GeKf5ycrrAcd8GWW?= =?us-ascii?q?ZNW8BcXDFDDIyhdYsCF+gOPehYoYfguVUDtgeyCRWwCO/z1jNEmmP60Ksn2O?= =?us-ascii?q?ohCwHG2wkgEsoKvnTJqtX0O6YSXvqyzKLV0DvDb/JW0ir65YjTbxAhp/eMXL?= =?us-ascii?q?J0ccXLz0kgCgPFg06fqYzgJTyV1+ANv3KH4OpnUOKikmgqoBx/rDiow8cjkI?= =?us-ascii?q?jJhoQNx1/Z7SV23YU1Kce/SE5hbt6pFoZbuSKCN4ZuX88vR39ktDwnxrEYo5?= =?us-ascii?q?K2fSwHxI4nyhLHdvCKd5aE7gj+WOqPOzt1hXZodKiiixux8EWtzPD3WNOu31?= =?us-ascii?q?ZQtCVFl8HBtnUK1xPO9MeKUuB9/kK92TaX0ADT9/1ELVg0laXFL54hxaY9lp?= =?us-ascii?q?0LsUTfHy/2nV/5gLWKeUU/4OSn8f7nYrTnp5+bMY97kBvyPbozlcyiGeg4Mw?= =?us-ascii?q?4OUHaH+emkybHu+VP1TK9XgvEoiKXUsZTXKd4bq6KhBg9ayIcj6xKxDze819?= =?us-ascii?q?QYmGEKLElFeBKGjYjpJlfOIf/5DfilhFShiytkx+vcMrL7GJXNL3nCkLDnfb?= =?us-ascii?q?ln8UJT1hc8zc1H65JOFr4BOO7zWlP2tNHADx45Mwu0w/vnCdpnyoMRR3mPD7?= =?us-ascii?q?SWMKPXq1CI5+YvL/OQa48SvTb3M+Il6OL2jX8lhV8derGk3YALaH+mBvRmI1?= =?us-ascii?q?uWYXz3j9cHD2gKogQ/TOvwiF2BST5TY2uyX6cn6T4lEoKqF4DDRpqigLaZxi?= =?us-ascii?q?e0AoVWZnxaClCLCXroeZuLW+0WaCKPIs9tiDwFVbmuS48gyRGjrw76y7x7Lu?= =?us-ascii?q?XK/i0Ur47s1N9w5+fLjxE96SR0D9iB02GKV2x0hWQISCIo06F/ukF90EyM3r?= =?us-ascii?q?N+g/BCCdNT4PZJWB8gNZHA1+x6F8zyWgXZc9iUVlmmXM6rDiwpTt0swN8CeU?= =?us-ascii?q?F9G8+tjkOL4y3/D7ILv7CTCJ9y9bjTjFbrIMMo6WvAxKgoiBEdQsoHYXa7gK?= =?us-ascii?q?hu8wHVC47hnECQlqLsfqMZin2evFyfxHaD6RkLGDV7Vr/ICDVGPhPb?= X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A2BqAABFuBtdjAVFDMBlHgEGBwaBUwk?= =?us-ascii?q?LAYJ0DFIyKIgXhQCJeVIBAQaLD3eEbYk1ggQBAQEMAQEFHgkBAgEBhlsjNAk?= =?us-ascii?q?OAQMBAQEEAQEBAQMCARMBAQEmimcMgjopAYJnBic1HRALISUPFDQUgycBgWk?= =?us-ascii?q?BDBQPpXsWBQEXh0UKGYEWgT4GgTQBi14XeIEHhCM+gmEEGIIUgm+CJgSVHZU?= =?us-ascii?q?YCT6BWoIfhDWNRJdtlGyPcAIEBgUCFAGBUDeBWTMaI4M9i0WFXx8BMgGBBQE?= =?us-ascii?q?BjikBAQ?= X-IPAS-Result: =?us-ascii?q?A2BqAABFuBtdjAVFDMBlHgEGBwaBUwkLAYJ0DFIyKIgXh?= =?us-ascii?q?QCJeVIBAQaLD3eEbYk1ggQBAQEMAQEFHgkBAgEBhlsjNAkOAQMBAQEEAQEBA?= =?us-ascii?q?QMCARMBAQEmimcMgjopAYJnBic1HRALISUPFDQUgycBgWkBDBQPpXsWBQEXh?= =?us-ascii?q?0UKGYEWgT4GgTQBi14XeIEHhCM+gmEEGIIUgm+CJgSVHZUYCT6BWoIfhDWNR?= =?us-ascii?q?JdtlGyPcAIEBgUCFAGBUDeBWTMaI4M9i0WFXx8BMgGBBQEBjikBAQ?= X-IronPort-AV: E=Sophos;i="5.63,444,1557212400"; d="scan'208";a="408114829" Received: from optima.cs.arizona.edu ([192.12.69.5]) by mails1n0out.email.arizona.edu with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jul 2019 13:07:22 -0700 Received: from lectura.cs.arizona.edu (lectura.cs.arizona.edu [192.12.69.186]) by optima.cs.arizona.edu (8.14.4/8.14.4/Debian-2ubuntu2.1) with ESMTP id x62K7L6V023915 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 2 Jul 2019 13:07:22 -0700 Received: from lectura.cs.arizona.edu (localhost [127.0.0.1]) by lectura.cs.arizona.edu (8.14.4/8.14.4/Debian-4.1ubuntu1.1) with ESMTP id x62K7LU1029771; Tue, 2 Jul 2019 13:07:21 -0700 Received: (from shijunxiao@localhost) by lectura.cs.arizona.edu (8.14.4/8.14.4/Submit) id x62K7LjD029770; Tue, 2 Jul 2019 13:07:21 -0700 Date: Tue, 2 Jul 2019 13:07:21 -0700 Message-Id: <201907022007.x62K7LjD029770@lectura.cs.arizona.edu> In-Reply-To: <20190625150414.11332-1-zhouyates@gmail.com> References: <20190625150414.11332-1-zhouyates@gmail.com> From: Junxiao Shi <sunnylandh@gmail.com> To: dev@dpdk.org CC: Yangchao Zhou <zhouyates@gmail.com>, stephen@networkplumber.org, ferruh.yigit@intel.com, sodey@rbbn.com Subject: Re: [dpdk-dev] [v3] kni: fix possible kernel crash with va2pa X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org Sender: "dev" <dev-bounces@dpdk.org> I am battling a related problem as reported on https://bugs.dpdk.org/show_bug.cgi?id=183 and this patch seems relevant, so I applied this patch on 196a46fab6eeb3ce2039e3bcaca80f8ba43ffc8d However, this patch does not work for me: with CONFIG_RTE_LIBRTE_MBUF_DEBUG enabled, kni_free_mbufs's invocation of rte_pktmbuf_free throws "bad mbuf pool" error. While all mbufs and segments in kni->rx_q now have physical addresses, the mbufs and segments placed back to kni->free_q still have (mis-)calculated virtual address. The pa2va function is not working properly. Consequently, userspace side is passing wrong pointer to rte_pktmbuf_free, so that application crashes with CONFIG_RTE_LIBRTE_MBUF_DEBUG enabled.