Patch Detail

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{
    "id": 52344,
    "url": "http://patches.dpdk.org/api/patches/52344/?format=api",
    "web_url": "http://patches.dpdk.org/project/dpdk/patch/20190405134511.49066-4-bruce.richardson@intel.com/",
    "project": {
        "id": 1,
        "url": "http://patches.dpdk.org/api/projects/1/?format=api",
        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
        "web_url": "http://core.dpdk.org",
        "scm_url": "git://dpdk.org/dpdk",
        "webscm_url": "http://git.dpdk.org/dpdk",
        "list_archive_url": "https://inbox.dpdk.org/dev",
        "list_archive_url_format": "https://inbox.dpdk.org/dev/{}",
        "commit_url_format": ""
    },
    "msgid": "<20190405134511.49066-4-bruce.richardson@intel.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20190405134511.49066-4-bruce.richardson@intel.com",
    "date": "2019-04-05T13:45:09",
    "name": "[3/5] net/i40e: fix dereference before NULL check in mbuf release",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "8c018f2af77d9b38aac32db3c46d97192766f5a3",
    "submitter": {
        "id": 20,
        "url": "http://patches.dpdk.org/api/people/20/?format=api",
        "name": "Bruce Richardson",
        "email": "bruce.richardson@intel.com"
    },
    "delegate": {
        "id": 1,
        "url": "http://patches.dpdk.org/api/users/1/?format=api",
        "username": "tmonjalo",
        "first_name": "Thomas",
        "last_name": "Monjalon",
        "email": "thomas@monjalon.net"
    },
    "mbox": "http://patches.dpdk.org/project/dpdk/patch/20190405134511.49066-4-bruce.richardson@intel.com/mbox/",
    "series": [
        {
            "id": 4138,
            "url": "http://patches.dpdk.org/api/series/4138/?format=api",
            "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=4138",
            "date": "2019-04-05T13:45:06",
            "name": "some small fixes",
            "version": 1,
            "mbox": "http://patches.dpdk.org/series/4138/mbox/"
        }
    ],
    "comments": "http://patches.dpdk.org/api/patches/52344/comments/",
    "check": "success",
    "checks": "http://patches.dpdk.org/api/patches/52344/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@dpdk.org",
        "Delivered-To": "patchwork@dpdk.org",
        "Received": [
            "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id 1B11B1B519;\n\tFri,  5 Apr 2019 15:45:34 +0200 (CEST)",
            "from mga12.intel.com (mga12.intel.com [192.55.52.136])\n\tby dpdk.org (Postfix) with ESMTP id 0F9151B511;\n\tFri,  5 Apr 2019 15:45:31 +0200 (CEST)",
            "from fmsmga007.fm.intel.com ([10.253.24.52])\n\tby fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;\n\t05 Apr 2019 06:45:31 -0700",
            "from silpixa00399126.ir.intel.com (HELO\n\tsilpixa00399126.ger.corp.intel.com) ([10.237.222.236])\n\tby fmsmga007.fm.intel.com with ESMTP; 05 Apr 2019 06:45:30 -0700"
        ],
        "X-Amp-Result": "SKIPPED(no attachment in message)",
        "X-Amp-File-Uploaded": "False",
        "X-ExtLoop1": "1",
        "X-IronPort-AV": "E=Sophos;i=\"5.60,312,1549958400\"; d=\"scan'208\";a=\"140383701\"",
        "From": "Bruce Richardson <bruce.richardson@intel.com>",
        "To": "dev@dpdk.org",
        "Cc": "Bruce Richardson <bruce.richardson@intel.com>, qi.z.zhang@intel.com,\n\tstable@dpdk.org",
        "Date": "Fri,  5 Apr 2019 14:45:09 +0100",
        "Message-Id": "<20190405134511.49066-4-bruce.richardson@intel.com>",
        "X-Mailer": "git-send-email 2.20.1",
        "In-Reply-To": "<20190405134511.49066-1-bruce.richardson@intel.com>",
        "References": "<20190405134511.49066-1-bruce.richardson@intel.com>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "Subject": "[dpdk-dev] [PATCH 3/5] net/i40e: fix dereference before NULL check\n\tin mbuf release",
        "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>,\n\t<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>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "Coverity flags that the txq variable is used before it's checked for NULL.\n\nCoverity issue: 195023\n\nFixes: 24853544c84c (\"net/i40e: fix mbuf free in vector Tx\")\nCc: qi.z.zhang@intel.com\nCC: stable@dpdk.org\n\nSigned-off-by: Bruce Richardson <bruce.richardson@intel.com>\n---\n drivers/net/i40e/i40e_rxtx.c | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)",
    "diff": "diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c\nindex 8f727fae6..5ce85eb52 100644\n--- a/drivers/net/i40e/i40e_rxtx.c\n+++ b/drivers/net/i40e/i40e_rxtx.c\n@@ -2423,13 +2423,13 @@ i40e_tx_queue_release_mbufs(struct i40e_tx_queue *txq)\n \tstruct rte_eth_dev *dev;\n \tuint16_t i;\n \n-\tdev = &rte_eth_devices[txq->port_id];\n-\n \tif (!txq || !txq->sw_ring) {\n \t\tPMD_DRV_LOG(DEBUG, \"Pointer to rxq or sw_ring is NULL\");\n \t\treturn;\n \t}\n \n+\tdev = &rte_eth_devices[txq->port_id];\n+\n \t/**\n \t *  vPMD tx will not set sw_ring's mbuf to NULL after free,\n \t *  so need to free remains more carefully.\n",
    "prefixes": [
        "3/5"
    ]
}