Received-SPF: pass (google.com: best guess record for domain of selinux-refpolicy-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
IronPort-PHdr: =?us-ascii?q?9a23=3Ad0uQJRZgr91R4L8D8r8kIpH/LSx+4OfEezUN45?=
 =?us-ascii?q?9isYplN5qZps+9YR7h7PlgxGXEQZ/co6odzbaP6ea5BjdLvcfJmUtBWaQEbw?=
 =?us-ascii?q?UCh8QSkl5oK+++Imq/EsTXaTcnFt9JTl5v8iLzG0FUHMHjew+a+SXqvnYdFR?=
 =?us-ascii?q?rlKAV6OPn+FJLMgMSrzeCy/IDYbxlViDanbr5+MQu6oR/MusQUj4ZuJak8xx?=
 =?us-ascii?q?/UqXZUZupawn9lK0iOlBjm/Mew+5Bj8yVUu/0/8sNLTLv3caclQ7FGFToqK2?=
 =?us-ascii?q?866tHluhnFVguP+2ATUn4KnRpSAgjK9w/1U5HsuSbnrOV92S2aPcrrTbAoXD?=
 =?us-ascii?q?mp8qlmRAP0hCoBKjU063/chNBug61HoRKhvx1/zJDSYIGJL/p1Y6fRccoHSW?=
 =?us-ascii?q?ZdQspdUipMDY2mb4sLEuEPI+BWoYfgrFcKtBezCw2hCObpxzRVhHH5wLc63v?=
 =?us-ascii?q?w8Hw/Y0gwuH9EAvnrao9r6NqgdTe+7wbLUzTjBdf5axSvx5YbKfx0nvPqCXa?=
 =?us-ascii?q?hwcc3UyUQ3Cg3FkkufqZTlPzyL0OQGrnWV7+96WuKrj24otQFwqSWoy8c3l4?=
 =?us-ascii?q?bJnZkYykzE9CplwIY1Ise0SEhgYdG+CpdQuCaaN5VvT84kXmpmtiE6yrgctp?=
 =?us-ascii?q?66eigH0I8oxxnYa/ybd4iI4xTjWPyNLjd/gXJofq+0iRWq8UW41+HxWca53E?=
 =?us-ascii?q?xKoyZYiNXAqH8A2wLJ5sSaTPZ2412v1iyV1w/J7+FJOUU0la3GJJE/2rMwjZ?=
 =?us-ascii?q?8TsVjbHi/xhUX2kLeadkU69eis7OTqeqnmqYWGN491lwH+Kb4imtC/AOskMg?=
 =?us-ascii?q?gOWHKX+eKg27344UL1WrBKjvwykqXBsZDaI9oUprKhDgNI3Ysu5AyzAje73N?=
 =?us-ascii?q?gCg3UKI0xJdAiag4TxPlHBOvH4DfOxg1S2lzdrwujLPqb8DZXWNXXDjLfgcq?=
 =?us-ascii?q?p9605b0gYzy8tf6IhOBrEOJ/LzRFf9tMbEAR8hLwy03+HnBc1g2YwEX2KPA7?=
 =?us-ascii?q?GWMKfQsVKT4+IgPe2MZIsPtzb7LPgk6OTigmM+mV8YZaOpx4cYaGikHvR6JE?=
 =?us-ascii?q?WUeWLsjc0cEWcOpQc+VPbliECGUTJKYnayWKU85islB468EYjDQYWtiqSb3C?=
 =?us-ascii?q?inBp1WenxGCleUHHfzaYqEX/YMaCSPIs5uiTEES7ehRJE71R20tw/11aBnLu?=
 =?us-ascii?q?zK9S0cr57j08J15+LLnxEo6TN0F9id032KT2xshWMHWTs23KF5oUxgxVaPyL?=
 =?us-ascii?q?J4jOJWFdxL4PNJVgY6OoLczuFhFdDyVRzOfs2TRFalXNqmGzcxQcw1w9MUZE?=
 =?us-ascii?q?Z9AdqihAjZ3yW2G78Vi6CLBJss/6LYwXjxPdxyxG3Y26Y9lFQmWNVAOnCmhq?=
 =?us-ascii?q?Fl6wjfHZLGk0Kcl6yyb6QTwDbN9HufzWqJpExYSBB/Xr7bUnAZZ0vWsdP561?=
 =?us-ascii?q?jDT7CwF7soLBFNycmYKqtFOZXVigBqTfHiNdCWQX+rlGq2Hl7cyrqKbYfueU?=
 =?us-ascii?q?0Y0SHZAU4Dg0YY+nPQcUAGDzql60fZCyZjXQb3al7o2fF3tXf+S0gz1QzMZE?=
 =?us-ascii?q?pkgf79sAUYgf2aVuM7wL0JomEipi9yEVL72MjZQZLUvAdlfaNBcfsj71pdk2?=
 =?us-ascii?q?HUrQpwOtqnNa80whZUaAlzvkXzx1BtB4tYlswrp2IC0gV/M+Sb3UlHejfe2o?=
 =?us-ascii?q?r/cPWDMWT2/Raye+vM11/G19KX8bYn9vs1sRPgsRuvG05k9G9ohZ0d92af74?=
 =?us-ascii?q?6CMhAbW5/6GhIz6QJzrbzRSjMw64PdyTtnNqzi9nfp28goH6MdxzytedZDN+?=
 =?us-ascii?q?vQDAL4HssbG8+GKeEnlh6udB1Sb85I86thBN+rb/uL3uaQOe9kmD+3xTBc7J?=
 =?us-ascii?q?tVzlOH9y06TPXBmZkC3afLjUO8Sz7ggQL54YjMkodeaGRXRzHuxA=3D=3D?=
Subject: Re: IB pkey policy problem found via the selinux-testsuite
To:     Daniel Jurgens <danielj@mellanox.com>,
        Paul Moore <paul@paul-moore.com>,
        "selinux@vger.kernel.org" <selinux@vger.kernel.org>,
        "selinux-refpolicy@vger.kernel.org" 
        <selinux-refpolicy@vger.kernel.org>,
        Lukas Vrabec <lvrabec@redhat.com>,
        Chris PeBenito <pebenito@ieee.org>
References: <CAHC9VhTuYi+W0RukEV4WNrP5X_AFeouaWMsdbgxSL1v04mouWw@mail.gmail.com>
 <CAHC9VhR1ZNyZqGB3Si-z77zLwaTBf-pkQk19rVqofs4P_oVtFg@mail.gmail.com>
 <CAHC9VhSKxgCB_j-eT65tSvqFDbBe_Wu_b+XsvN0Si2eDrEROMQ@mail.gmail.com>
 <5817f158-9ba2-420d-3a9e-59ee43be3472@mellanox.com>
From:   Stephen Smalley <sds@tycho.nsa.gov>
Message-ID: <9048b292-b9fa-49f7-d66e-1f0ceaa39290@tycho.nsa.gov>
Date:   Tue, 3 Sep 2019 10:45:53 -0400
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101
 Thunderbird/60.7.0
MIME-Version: 1.0
In-Reply-To: <5817f158-9ba2-420d-3a9e-59ee43be3472@mellanox.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: selinux-refpolicy-owner@vger.kernel.org
Precedence: bulk

On 9/3/19 10:30 AM, Daniel Jurgens wrote:
> 
> On 8/27/2019 12:24 PM, Paul Moore wrote:
>> On Thu, Feb 28, 2019 at 4:58 PM Paul Moore <paul@paul-moore.com> wrote:
>>> On Wed, Feb 13, 2019 at 4:35 PM Paul Moore <paul@paul-moore.com> wrote:
>>>> Hello all,
>>>>
>>>> On a fully up-to-date Rawhide system you need the following line added
>>>> to the policy/test_ibpkey.te file to get a clean run of the
>>>> selinux-testsuite:
>>>>
>>>>    allow test_ibpkey_access_t self:capability { ipc_lock };
>>>>
>>>> The breakage doesn't appear to be due to a kernel change (previously
>>>> working kernels now fail), or a Fedora Rawhide policy change (nothing
>>>> relevant changed since the last clean run), but I did notice that my
>>>> libibverbs package was updated just prior to the breakage.  I haven't
>>>> had the time to dig into the library code, but I expect that to be the
>>>> source of the problem.
>>> Just to be clear, I don't believe this breakage is limited to the test
>>> suite, I expect any users of the SELinux IB hooks will run into this
>>> problem.  I believe we need to update the upstream and distro
>>> policies.
>> A ping to bring this issue back to the top of the mailing list.
> 
> Hi Paul, I looked in the libraries and don't see explicit use of mlock. Maybe there was a change to use that access control for get_user_pages? That doesn't really jive with previously working kernels no longer working though.

It would be useful to see the audit messages for that ipc_lock denial, 
including the SYSCALL record.

There are a number of kernel operations that can trigger ipc_lock checks,
https://elixir.bootlin.com/linux/latest/ident/CAP_IPC_LOCK

Several of those are infiniband-specific.