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{
    "id": 816485,
    "url": "http://patchwork.ozlabs.org/api/patches/816485/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/netdev/patch/1505940337-79069-31-git-send-email-keescook@chromium.org/",
    "project": {
        "id": 7,
        "url": "http://patchwork.ozlabs.org/api/projects/7/?format=api",
        "name": "Linux network development",
        "link_name": "netdev",
        "list_id": "netdev.vger.kernel.org",
        "list_email": "netdev@vger.kernel.org",
        "web_url": null,
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        "webscm_url": null,
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        "list_archive_url_format": "",
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    "msgid": "<1505940337-79069-31-git-send-email-keescook@chromium.org>",
    "list_archive_url": null,
    "date": "2017-09-20T20:45:36",
    "name": "[v3,30/31] usercopy: Restrict non-usercopy caches to size 0",
    "commit_ref": null,
    "pull_url": null,
    "state": "not-applicable",
    "archived": true,
    "hash": "006f517f98e82789c3f1db5c5dece7fe006c6cf9",
    "submitter": {
        "id": 10641,
        "url": "http://patchwork.ozlabs.org/api/people/10641/?format=api",
        "name": "Kees Cook",
        "email": "keescook@chromium.org"
    },
    "delegate": {
        "id": 34,
        "url": "http://patchwork.ozlabs.org/api/users/34/?format=api",
        "username": "davem",
        "first_name": "David",
        "last_name": "Miller",
        "email": "davem@davemloft.net"
    },
    "mbox": "http://patchwork.ozlabs.org/project/netdev/patch/1505940337-79069-31-git-send-email-keescook@chromium.org/mbox/",
    "series": [
        {
            "id": 4231,
            "url": "http://patchwork.ozlabs.org/api/series/4231/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/netdev/list/?series=4231",
            "date": "2017-09-20T20:45:22",
            "name": "Hardened usercopy whitelisting",
            "version": 3,
            "mbox": "http://patchwork.ozlabs.org/series/4231/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/816485/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/816485/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<netdev-owner@vger.kernel.org>",
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        ],
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        "X-Received": "by 10.84.129.193 with SMTP id b59mr3325130plb.43.1505940377146; \n\tWed, 20 Sep 2017 13:46:17 -0700 (PDT)",
        "From": "Kees Cook <keescook@chromium.org>",
        "To": "linux-kernel@vger.kernel.org",
        "Cc": "Kees Cook <keescook@chromium.org>, David Windsor <dave@nullcore.net>,\n\tChristoph Lameter <cl@linux.com>, Pekka Enberg <penberg@kernel.org>,\n\tDavid Rientjes <rientjes@google.com>,\n\tJoonsoo Kim <iamjoonsoo.kim@lge.com>,\n\tAndrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,\n\tlinux-fsdevel@vger.kernel.org, netdev@vger.kernel.org,\n\tkernel-hardening@lists.openwall.com",
        "Subject": "[PATCH v3 30/31] usercopy: Restrict non-usercopy caches to size 0",
        "Date": "Wed, 20 Sep 2017 13:45:36 -0700",
        "Message-Id": "<1505940337-79069-31-git-send-email-keescook@chromium.org>",
        "X-Mailer": "git-send-email 2.7.4",
        "In-Reply-To": "<1505940337-79069-1-git-send-email-keescook@chromium.org>",
        "References": "<1505940337-79069-1-git-send-email-keescook@chromium.org>",
        "Sender": "netdev-owner@vger.kernel.org",
        "Precedence": "bulk",
        "List-ID": "<netdev.vger.kernel.org>",
        "X-Mailing-List": "netdev@vger.kernel.org"
    },
    "content": "With all known usercopied cache whitelists now defined in the\nkernel, switch the default usercopy region of kmem_cache_create()\nto size 0. Any new caches with usercopy regions will now need to use\nkmem_cache_create_usercopy() instead of kmem_cache_create().\n\nThis patch is modified from Brad Spengler/PaX Team's PAX_USERCOPY\nwhitelisting code in the last public patch of grsecurity/PaX based on my\nunderstanding of the code. Changes or omissions from the original code are\nmine and don't reflect the original grsecurity/PaX code.\n\nCc: David Windsor <dave@nullcore.net>\nCc: Christoph Lameter <cl@linux.com>\nCc: Pekka Enberg <penberg@kernel.org>\nCc: David Rientjes <rientjes@google.com>\nCc: Joonsoo Kim <iamjoonsoo.kim@lge.com>\nCc: Andrew Morton <akpm@linux-foundation.org>\nCc: linux-mm@kvack.org\nSigned-off-by: Kees Cook <keescook@chromium.org>\n---\n mm/slab_common.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)",
    "diff": "diff --git a/mm/slab_common.c b/mm/slab_common.c\nindex d4e6442f9bbc..0ac45ba6685e 100644\n--- a/mm/slab_common.c\n+++ b/mm/slab_common.c\n@@ -515,7 +515,7 @@ struct kmem_cache *\n kmem_cache_create(const char *name, size_t size, size_t align,\n \t\tunsigned long flags, void (*ctor)(void *))\n {\n-\treturn kmem_cache_create_usercopy(name, size, align, flags, 0, size,\n+\treturn kmem_cache_create_usercopy(name, size, align, flags, 0, 0,\n \t\t\t\t\t  ctor);\n }\n EXPORT_SYMBOL(kmem_cache_create);\n",
    "prefixes": [
        "v3",
        "30/31"
    ]
}