From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF5C0C4360C for ; Thu, 10 Oct 2019 18:14:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B5404214E0 for ; Thu, 10 Oct 2019 18:14:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=yahoo.com header.i=@yahoo.com header.b="rsBY0mtf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726951AbfJJSOY (ORCPT ); Thu, 10 Oct 2019 14:14:24 -0400 Received: from sonic315-48.consmr.mail.bf2.yahoo.com ([74.6.134.222]:44600 "EHLO sonic315-48.consmr.mail.bf2.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726946AbfJJSOY (ORCPT ); Thu, 10 Oct 2019 14:14:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1570731262; bh=zaME4nyMqJtWjsRvYUaqDCTHCgF4I360TrNfhU1lx1U=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From:Subject; b=rsBY0mtfHdTBfLzAWvjwH0w7vnqUE+nGnhrcHvjLwJU0NHH7ez+VVLrn7BgMGP2/Ni9eJ60SaBn8aQMmmjmKdw2ktPIKVpFhKUBmJY4iyGzvZa0xQDWimVdArI8kzKWT8v54MVwA1MAiwo2RNfF/NXP51+1F/IJYfTVrweC1dA1ES7cH/0xKsyKbtXpR/qWJjc3IeRVK0Ff7k1wMQ3xZe8dg8BHeRWDsNbf6TLNV/k8m4WHgLZCoA0ssmjfpwSnS4Jm3IreLuz+hkeL5BiltW/zRFuYsG3jJoBlMGr3jtSLP1PSY4DhyQz3PYL+RYwRcyuk7eng4KqBuvL0vxnTmSQ== X-YMail-OSG: Ce6YZYEVM1k93g59lNLFfHP4FBHYKdtTbpIDqwUFs4XVp0rr53Kf8Dk9vVpygZa mmf6Ld_DC6iRUb4itBdgSY5txaLvAWHzPpPYv6_6vIWd3opFidCKOK6GgK5gKKHN6a.WdYomz9B8 tSeAmbdhCW08OdRXSjNiPl4EFF2CGOPZuuBqovjq3Y1Ph5Qm.qXQRL5wb6kqsYetvMRBC7npId_Z UTeGzuEYXTxAg2qIB9wVEAqQeOjN.AfcOd5_K9x0Z737CgxpZsWlyx8n5t6vkg_AkALjcpL1HuoP x8uCkBn_rDX72IpZluaXkTTp7bYVhKDvqh863USEdMulkELpDyNs1FUkGao9aUZZ8ZbxPi_6V3IY R6GFa9tC2n_mB.5xDjVYWHzd6zegp7FotA3TjIRnOHPDrq_Fyuqmu6LoE9NyNExLpM4cD3kTIEZM DdlnnXjyqkV3c_rbLvISvJRYv9A71pg2Ua86Uxb2uuX95pyC.lmGhUDo8rN58j0jlvnOjr9Lor.6 JciMIV_3uLrWJy5GHnTPzOrPhhsyvAxI9BxZcne78t9dAZhDNki8859E6jQlCoYtk9Kpiq_Meefm Cmn1n9_t8SjzAM2yFtXFqsEUJFBj6iWaWlVe01a.AL4tXk57o_Lkd2E2B8Tx934oXXV3lAV_8ZX9 BZ_vqyYCcaA7fvtX1Ex0S.b6X0hZDOYZtyf1lpjW.tVtpQBYGWaGzoAL6Vx6YNQ6X1dtn8lfeQK5 mM1dtGaMoUsnuhrA.LpNakwtdwbycZyHaYicmaYTxtHJj4Ckz6K6wZP8mT9.fQnQeLubrxOeHAuu OaEe74_Duf_k.2X9tgEEDEBj7rXXpTWb44J2qmD8UKxyGF_CP6iYCy_lOE4czebGF9BS52ulVVjG xc0M_PJtSCg9ZR3LRDSxCGnEgJZxOwYWrYnxhCKJt7DNFphtVt9c_rKxMihjAaAevMbrFaqpgvYr KMQr0nz1eAY41DerRfFoV1VQZvd0_CieQtO90EzGQdDblWNfVxatl779Wgnp7mT.G9XAZb_8fk.d _sc9MeNwmm_dke.c5anI4SnY7oSNhh.3o73Wl1fvGpmBaywRuPt7YDWPFaMdZY1Nzg4ovVT5lJFE XBF46Y74FimJAWBa.CtOqK6LShx26J7pLWzvui0t5xLj0VnOb4cIOxY.qA8KcNe_eoOpQw2SwPd7 Mmy7xunaqIlXsLP_RmJ4HlwAvGRmvaCguln_hY5xW8OynqJyXb7qgKe7TQyh8_4a2zuecwd2IJGq zPpAKV7U8Ez4eiHEyDYPm6ch4LU4RM3nelIP4wmrOj3Ac.ODrKkBi0HrRCOIBJJBIYQoiaS488KA GfSp5h1J2ioj9uShOxvveAnTpaG_FOZJXZCzWdEYBH1CCTGjX37Nobih6K0hPuZTwhbnQuCL1dzp trLcbBIEvnBR7GxtkA85ZTXS10p8wCvJrZ8g- Received: from sonic.gate.mail.ne1.yahoo.com by sonic315.consmr.mail.bf2.yahoo.com with HTTP; Thu, 10 Oct 2019 18:14:22 +0000 Received: by smtp416.mail.bf1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID 704d4bedeb38f9e2c337e1f9d670721c; Thu, 10 Oct 2019 18:12:21 +0000 (UTC) Subject: Re: [PATCH RFC] perf_event: Add support for LSM and SELinux checks To: James Morris Cc: "Joel Fernandes (Google)" , linux-kernel@vger.kernel.org, Peter Zijlstra , rostedt@goodmis.org, primiano@google.com, rsavitski@google.com, jeffv@google.com, kernel-team@android.com, Alexei Starovoitov , Arnaldo Carvalho de Melo , bpf@vger.kernel.org, Daniel Borkmann , Ingo Molnar , Jiri Olsa , Kees Cook , linux-security-module@vger.kernel.org, Matthew Garrett , Namhyung Kim , selinux@vger.kernel.org, Song Liu , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , Yonghong Song , casey@schaufler-ca.com References: <20191009203657.6070-1-joel@joelfernandes.org> <710c5bc0-deca-2649-8351-678e177214e9@schaufler-ca.com> <2b94802d-12ea-4f2d-bb65-eda3b3542bb2@schaufler-ca.com> From: Casey Schaufler Openpgp: preference=signencrypt Autocrypt: addr=casey@schaufler-ca.com; keydata= mQINBFzV9HABEAC/mmv3jeJyF7lR7QhILYg1+PeBLIMZv7KCzBSc/4ZZipoWdmr77Lel/RxQ 1PrNx0UaM5r6Hj9lJmJ9eg4s/TUBSP67mTx+tsZ1RhG78/WFf9aBe8MSXxY5cu7IUwo0J/CG vdSqACKyYPV5eoTJmnMxalu8/oVUHyPnKF3eMGgE0mKOFBUMsb2pLS/enE4QyxhcZ26jeeS6 3BaqDl1aTXGowM5BHyn7s9LEU38x/y2ffdqBjd3au2YOlvZ+XUkzoclSVfSR29bomZVVyhMB h1jTmX4Ac9QjpwsxihT8KNGvOM5CeCjQyWcW/g8LfWTzOVF9lzbx6IfEZDDoDem4+ZiPsAXC SWKBKil3npdbgb8MARPes2DpuhVm8yfkJEQQmuLYv8GPiJbwHQVLZGQAPBZSAc7IidD2zbf9 XAw1/SJGe1poxOMfuSBsfKxv9ba2i8hUR+PH7gWwkMQaQ97B1yXYxVEkpG8Y4MfE5Vd3bjJU kvQ/tOBUCw5zwyIRC9+7zr1zYi/3hk+OG8OryZ5kpILBNCo+aePeAJ44znrySarUqS69tuXd a3lMPHUJJpUpIwSKQ5UuYYkWlWwENEWSefpakFAIwY4YIBkzoJ/t+XJHE1HTaJnRk6SWpeDf CreF3+LouP4njyeLEjVIMzaEpwROsw++BX5i5vTXJB+4UApTAQARAQABtChDYXNleSBTY2hh dWZsZXIgPGNhc2V5QHNjaGF1Zmxlci1jYS5jb20+iQJUBBMBCAA+FiEEC+9tH1YyUwIQzUIe OKUVfIxDyBEFAlzV9HACGwMFCRLMAwAFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AACgkQOKUV fIxDyBG6ag/6AiRl8yof47YOEVHlrmewbpnlBTaYNfJ5cZflNRKRX6t4bp1B2YV1whlDTpiL vNOwFkh+ZE0eI5M4x8Gw2Oiok+4Q5liA9PHTozQYF+Ia+qdL5EehfbLGoEBqklpGvG3h8JsO 7SvONJuFDgvab/U/UriDYycJwzwKZuhVtK9EMpnTtUDyP3DY+Q8h7MWsniNBLVXnh4yBIEJg SSgDn3COpZoFTPGKE+rIzioo/GJe8CTa2g+ZggJiY/myWTS3quG0FMvwvNYvZ4I2g6uxSl7n bZVqAZgqwoTAv1HSXIAn9muwZUJL03qo25PFi2gQmX15BgJKQcV5RL0GHFHRThDS3IyadOgK P2j78P8SddTN73EmsG5OoyzwZAxXfck9A512BfVESqapHurRu2qvMoUkQaW/2yCeRQwGTsFj /rr0lnOBkyC6wCmPSKXe3dT2mnD5KnCkjn7KxLqexKt4itGjJz4/ynD/qh+gL7IPbifrQtVH JI7cr0fI6Tl8V6efurk5RjtELsAlSR6fKV7hClfeDEgLpigHXGyVOsynXLr59uE+g/+InVic jKueTq7LzFd0BiduXGO5HbGyRKw4MG5DNQvC//85EWmFUnDlD3WHz7Hicg95D+2IjD2ZVXJy x3LTfKWdC8bU8am1fi+d6tVEFAe/KbUfe+stXkgmfB7pxqW5Ag0EXNX0cAEQAPIEYtPebJzT wHpKLu1/j4jQcke06Kmu5RNuj1pEje7kX5IKzQSs+CPH0NbSNGvrA4dNGcuDUTNHgb5Be9hF zVqRCEvF2j7BFbrGe9jqMBWHuWheQM8RRoa2UMwQ704mRvKr4sNPh01nKT52ASbWpBPYG3/t WbYaqfgtRmCxBnqdOx5mBJIBh9Q38i63DjQgdNcsTx2qS7HFuFyNef5LCf3jogcbmZGxG/b7 yF4OwmGsVc8ufvlKo5A9Wm+tnRjLr/9Mn9vl5Xa/tQDoPxz26+aWz7j1in7UFzAarcvqzsdM Em6S7uT+qy5jcqyuipuenDKYF/yNOVSNnsiFyQTFqCPCpFihOnuaWqfmdeUOQHCSo8fD4aRF emsuxqcsq0Jp2ODq73DOTsdFxX2ESXYoFt3Oy7QmIxeEgiHBzdKU2bruIB5OVaZ4zWF+jusM Uh+jh+44w9DZkDNjxRAA5CxPlmBIn1OOYt1tsphrHg1cH1fDLK/pDjsJZkiH8EIjhckOtGSb aoUUMMJ85nVhN1EbU/A3DkWCVFEA//Vu1+BckbSbJKE7Hl6WdW19BXOZ7v3jo1q6lWwcFYth esJfk3ZPPJXuBokrFH8kqnEQ9W2QgrjDX3et2WwZFLOoOCItWxT0/1QO4ikcef/E7HXQf/ij Dxf9HG2o5hOlMIAkJq/uLNMvABEBAAGJAjwEGAEIACYWIQQL720fVjJTAhDNQh44pRV8jEPI EQUCXNX0cAIbDAUJEswDAAAKCRA4pRV8jEPIEWkzEACKFUnpp+wIVHpckMfBqN8BE5dUbWJc GyQ7wXWajLtlPdw1nNw0Wrv+ob2RCT7qQlUo6GRLcvj9Fn5tR4hBvR6D3m8aR0AGHbcC62cq I7LjaSDP5j/em4oVL2SMgNTrXgE2w33JMGjAx9oBzkxmKUqprhJomPwmfDHMJ0t7y39Da724 oLPTkQDpJL1kuraM9TC5NyLe1+MyIxqM/8NujoJbWeQUgGjn9uxQAil7o/xSCjrWCP3kZDID vd5ZaHpdl8e1mTExQoKr4EWgaMjmD/a3hZ/j3KfTVNpM2cLfD/QwTMaC2fkK8ExMsz+rUl1H icmcmpptCwOSgwSpPY1Zfio6HvEJp7gmDwMgozMfwQuT9oxyFTxn1X3rn1IoYQF3P8gsziY5 qtTxy2RrgqQFm/hr8gM78RhP54UPltIE96VywviFzDZehMvuwzW//fxysIoK97Y/KBZZOQs+ /T+Bw80Pwk/dqQ8UmIt2ffHEgwCTbkSm711BejapWCfklxkMZDp16mkxSt2qZovboVjXnfuq wQ1QL4o4t1hviM7LyoflsCLnQFJh6RSBhBpKQinMJl/z0A6NYDkQi6vEGMDBWX/M2vk9Jvwa v0cEBfY3Z5oFgkh7BUORsu1V+Hn0fR/Lqq/Pyq+nTR26WzGDkolLsDr3IH0TiAVH5ZuPxyz6 abzjfg== Message-ID: Date: Thu, 10 Oct 2019 11:12:19 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: selinux-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: selinux@vger.kernel.org On 10/9/2019 7:44 PM, James Morris wrote: > On Wed, 9 Oct 2019, Casey Schaufler wrote: > >> On 10/9/2019 3:14 PM, James Morris wrote: >>> On Wed, 9 Oct 2019, Casey Schaufler wrote: >>> >>>> Please consider making the perf_alloc security blob maintained >>>> by the infrastructure rather than the individual modules. This >>>> will save it having to be changed later. >>> Is anyone planning on using this with full stacking? >>> >>> If not, we don't need the extra code & complexity. Stacking should only >>> cover what's concretely required by in-tree users. >> I don't believe it's any simpler for SELinux to do the allocation >> than for the infrastructure to do it. I don't see anyone's head >> exploding over the existing infrastructure allocation of blobs. >> We're likely to want it at some point, so why not avoid the hassle >> and delay by doing it the "new" way up front? > Because it is not necessary. The logic escapes me, but OK.