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{
    "id": 48346,
    "url": "https://patches.dpdk.org/api/patches/48346/?format=api",
    "web_url": "https://patches.dpdk.org/project/dpdk/patch/20181127092325.25758-1-maxime.coquelin@redhat.com/",
    "project": {
        "id": 1,
        "url": "https://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",
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        "list_archive_url_format": "https://inbox.dpdk.org/dev/{}",
        "commit_url_format": ""
    },
    "msgid": "<20181127092325.25758-1-maxime.coquelin@redhat.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20181127092325.25758-1-maxime.coquelin@redhat.com",
    "date": "2018-11-27T09:23:25",
    "name": "vhost: fix possible null pointer dereferencing",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "0db607e6257beec96dc85e008d09b3d0fef95bf1",
    "submitter": {
        "id": 512,
        "url": "https://patches.dpdk.org/api/people/512/?format=api",
        "name": "Maxime Coquelin",
        "email": "maxime.coquelin@redhat.com"
    },
    "delegate": null,
    "mbox": "https://patches.dpdk.org/project/dpdk/patch/20181127092325.25758-1-maxime.coquelin@redhat.com/mbox/",
    "series": [
        {
            "id": 2576,
            "url": "https://patches.dpdk.org/api/series/2576/?format=api",
            "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=2576",
            "date": "2018-11-27T09:23:25",
            "name": "vhost: fix possible null pointer dereferencing",
            "version": 1,
            "mbox": "https://patches.dpdk.org/series/2576/mbox/"
        }
    ],
    "comments": "https://patches.dpdk.org/api/patches/48346/comments/",
    "check": "success",
    "checks": "https://patches.dpdk.org/api/patches/48346/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 771CE1B4F7;\n\tTue, 27 Nov 2018 10:23:44 +0100 (CET)",
            "from mx1.redhat.com (mx1.redhat.com [209.132.183.28])\n\tby dpdk.org (Postfix) with ESMTP id 018696833;\n\tTue, 27 Nov 2018 10:23:41 +0100 (CET)",
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        ],
        "From": "Maxime Coquelin <maxime.coquelin@redhat.com>",
        "To": "dev@dpdk.org, tiwei.bie@intel.com, zhihong.wang@intel.com,\n\tjfreimann@redhat.com",
        "Cc": "stable@dpdk.org,\n\tMaxime Coquelin <maxime.coquelin@redhat.com>",
        "Date": "Tue, 27 Nov 2018 10:23:25 +0100",
        "Message-Id": "<20181127092325.25758-1-maxime.coquelin@redhat.com>",
        "X-Scanned-By": "MIMEDefang 2.84 on 10.5.11.22",
        "X-Greylist": "Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.5.110.30]); Tue, 27 Nov 2018 09:23:40 +0000 (UTC)",
        "Subject": "[dpdk-dev] [PATCH] vhost: fix possible null pointer dereferencing",
        "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": "If mmap() call fails in vhost_user_set_mem_table, dev->mem\nis set to NULL. If later, qva_to_vva() is called, a segfault\noccurs.\n\nFixes: 8f972312b8f4 (\"vhost: support vhost-user\")\nCc: stable@dpdk.org\n\nSigned-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>\n---\n lib/librte_vhost/vhost_user.c | 3 +++\n 1 file changed, 3 insertions(+)",
    "diff": "diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c\nindex 3ea64eba6..c44fef9cc 100644\n--- a/lib/librte_vhost/vhost_user.c\n+++ b/lib/librte_vhost/vhost_user.c\n@@ -489,6 +489,9 @@ qva_to_vva(struct virtio_net *dev, uint64_t qva, uint64_t *len)\n \tstruct rte_vhost_mem_region *r;\n \tuint32_t i;\n \n+\tif (unlikely(!dev || !dev->mem))\n+\t\treturn 0;\n+\n \t/* Find the region where the address lives. */\n \tfor (i = 0; i < dev->mem->nregions; i++) {\n \t\tr = &dev->mem->regions[i];\n",
    "prefixes": []
}