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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 10B5EC433F4 for ; Fri, 31 Aug 2018 00:47:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A4E2620839 for ; Fri, 31 Aug 2018 00:47:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="MGaGymjn" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A4E2620839 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727252AbeHaEwc (ORCPT ); Fri, 31 Aug 2018 00:52:32 -0400 Received: from mail-qk1-f193.google.com ([209.85.222.193]:45218 "EHLO mail-qk1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726037AbeHaEwc (ORCPT ); Fri, 31 Aug 2018 00:52:32 -0400 Received: by mail-qk1-f193.google.com with SMTP id z125-v6so417296qkb.12; Thu, 30 Aug 2018 17:47:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:openpgp:autocrypt:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=gi8uQCyeOAesAT0H3hgEmc0dhqSiFW/SnRDiOwKlqFo=; b=MGaGymjn6Yp1YxbZxrRFT0m6jhdEHqbR/E9rWWqbftbP0GfAjo92/1oY9ZqwiRq/90 4T/MK5nRNtAKCKRopzQoHDTyRKaHUxznPOXscJN3MzFbYbzHDAOev2ZgJLCT5Rq8+mBy 2yIGC6nF7gplHL3gmvJk0OBLg0HVnmdZL8ky0az3r9lTGjfPZu4pPHReSw2nWuOWZWIX ryIoiyEtefvXiUHim4ZVVNtE2esVyRXkQ9dYOkh/p7krhYDT6WwZBzp8t32wYNVBdWx0 e70+Imhqt2H6q1+t1ya7/AXIj1ieyLRGMmCEli4gOs2u9bJNOwPtSWO/TNyzxnDYKu/R 2E8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=gi8uQCyeOAesAT0H3hgEmc0dhqSiFW/SnRDiOwKlqFo=; b=piJmsGzQT4iMFkw1LrRM24+wRnYd990FOoeL8Dis9utIVgsrjxH2MKOX8i6+s369hB t5cCBVE+Rft5KLv5M9iP4B6DjNhoRQCjS7bxNGT38vDBxcEsIoP6/W1fAo3HQVGjMa+x ebE2tsJRbuhoyWN/2CLE6Ng6CiS4hEB9c74gLs8CN82NuO5JgPQczqr4FosQLMMk0GXC 7sAF4dXb6JiHdHbMGNnf0gT8Puhqa19IXfazktYc2mjwYSYVGMsHQcF2yZjR7xIYbuyC 9FaLeQbmzmsBLsXmWIw6DkZS+hPrm/5dVCMRRBRrZgkjN9KBnbHA6oUfIwMlDZcceXfJ BZtg== X-Gm-Message-State: APzg51CR+umOHNoV8QdqcF5nFs3MhpUUIUxm1aKoyr8oisoG/VtCA4+B UNSP8sR//odaY6yJ8kYDQqU= X-Google-Smtp-Source: ANB0VdZn4OAwGWfhpM5Ol+x+4Orm849bIRnEx/OAywDnf6klr5FtTSH+/fam6luqVD1UsojPchaBCA== X-Received: by 2002:a37:a107:: with SMTP id k7-v6mr13490763qke.276.1535676462482; Thu, 30 Aug 2018 17:47:42 -0700 (PDT) Received: from [10.69.41.93] ([192.19.223.250]) by smtp.googlemail.com with ESMTPSA id b3-v6sm5020054qtb.80.2018.08.30.17.47.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 30 Aug 2018 17:47:41 -0700 (PDT) Subject: Re: [PATCH v2 6/9] net: bcmgenet: fix OF child-node lookup To: Johan Hovold , Rob Herring , Greg Kroah-Hartman Cc: Frank Rowand , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, stable , "David S . Miller" References: <20180827082153.22537-1-johan@kernel.org> <20180827082153.22537-7-johan@kernel.org> From: Florian Fainelli Openpgp: preference=signencrypt Autocrypt: addr=f.fainelli@gmail.com; prefer-encrypt=mutual; keydata= xsDiBEjPuBIRBACW9MxSJU9fvEOCTnRNqG/13rAGsj+vJqontvoDSNxRgmafP8d3nesnqPyR xGlkaOSDuu09rxuW+69Y2f1TzjFuGpBk4ysWOR85O2Nx8AJ6fYGCoeTbovrNlGT1M9obSFGQ X3IzRnWoqlfudjTO5TKoqkbOgpYqIo5n1QbEjCCwCwCg3DOH/4ug2AUUlcIT9/l3pGvoRJ0E AICDzi3l7pmC5IWn2n1mvP5247urtHFs/uusE827DDj3K8Upn2vYiOFMBhGsxAk6YKV6IP0d ZdWX6fqkJJlu9cSDvWtO1hXeHIfQIE/xcqvlRH783KrihLcsmnBqOiS6rJDO2x1eAgC8meAX SAgsrBhcgGl2Rl5gh/jkeA5ykwbxA/9u1eEuL70Qzt5APJmqVXR+kWvrqdBVPoUNy/tQ8mYc nzJJ63ng3tHhnwHXZOu8hL4nqwlYHRa9eeglXYhBqja4ZvIvCEqSmEukfivk+DlIgVoOAJbh qIWgvr3SIEuR6ayY3f5j0f2ejUMYlYYnKdiHXFlF9uXm1ELrb0YX4GMHz80nRmxvcmlhbiBG YWluZWxsaSA8Zi5mYWluZWxsaUBnbWFpbC5jb20+wmYEExECACYCGyMGCwkIBwMCBBUCCAME FgIDAQIeAQIXgAUCVF/S8QUJHlwd3wAKCRBhV5kVtWN2DvCVAJ4u4/bPF4P3jxb4qEY8I2gS 6hG0gACffNWlqJ2T4wSSn+3o7CCZNd7SLSDOw00ESM+4EhAQAL/o09boR9D3Vk1Tt7+gpYr3 WQ6hgYVON905q2ndEoA2J0dQxJNRw3snabHDDzQBAcqOvdi7YidfBVdKi0wxHhSuRBfuOppu pdXkb7zxuPQuSveCLqqZWRQ+Cc2QgF7SBqgznbe6Ngout5qXY5Dcagk9LqFNGhJQzUGHAsIs hap1f0B1PoUyUNeEInV98D8Xd/edM3mhO9nRpUXRK9Bvt4iEZUXGuVtZLT52nK6Wv2EZ1TiT OiqZlf1P+vxYLBx9eKmabPdm3yjalhY8yr1S1vL0gSA/C6W1o/TowdieF1rWN/MYHlkpyj9c Rpc281gAO0AP3V1G00YzBEdYyi0gaJbCEQnq8Vz1vDXFxHzyhgGz7umBsVKmYwZgA8DrrB0M oaP35wuGR3RJcaG30AnJpEDkBYHznI2apxdcuTPOHZyEilIRrBGzDwGtAhldzlBoBwE3Z3MY 31TOpACu1ZpNOMysZ6xiE35pWkwc0KYm4hJA5GFfmWSN6DniimW3pmdDIiw4Ifcx8b3mFrRO BbDIW13E51j9RjbO/nAaK9ndZ5LRO1B/8Fwat7bLzmsCiEXOJY7NNpIEpkoNoEUfCcZwmLrU +eOTPzaF6drw6ayewEi5yzPg3TAT6FV3oBsNg3xlwU0gPK3v6gYPX5w9+ovPZ1/qqNfOrbsE FRuiSVsZQ5s3AAMFD/9XjlnnVDh9GX/r/6hjmr4U9tEsM+VQXaVXqZuHKaSmojOLUCP/YVQo 7IiYaNssCS4FCPe4yrL4FJJfJAsbeyDykMN7wAnBcOkbZ9BPJPNCbqU6dowLOiy8AuTYQ48m vIyQ4Ijnb6GTrtxIUDQeOBNuQC/gyyx3nbL/lVlHbxr4tb6YkhkO6shjXhQh7nQb33FjGO4P WU11Nr9i/qoV8QCo12MQEo244RRA6VMud06y/E449rWZFSTwGqb0FS0seTcYNvxt8PB2izX+ HZA8SL54j479ubxhfuoTu5nXdtFYFj5Lj5x34LKPx7MpgAmj0H7SDhpFWF2FzcC1bjiW9mjW HaKaX23Awt97AqQZXegbfkJwX2Y53ufq8Np3e1542lh3/mpiGSilCsaTahEGrHK+lIusl6mz Joil+u3k01ofvJMK0ZdzGUZ/aPMZ16LofjFA+MNxWrZFrkYmiGdv+LG45zSlZyIvzSiG2lKy kuVag+IijCIom78P9jRtB1q1Q5lwZp2TLAJlz92DmFwBg1hyFzwDADjZ2nrDxKUiybXIgZp9 aU2d++ptEGCVJOfEW4qpWCCLPbOT7XBr+g/4H3qWbs3j/cDDq7LuVYIe+wchy/iXEJaQVeTC y5arMQorqTFWlEOgRA8OP47L9knl9i4xuR0euV6DChDrguup2aJVU8JPBBgRAgAPAhsMBQJU X9LxBQkeXB3fAAoJEGFXmRW1Y3YOj4UAn3nrFLPZekMeqX5aD/aq/dsbXSfyAKC45Go0YyxV HGuUuzv+GKZ6nsysJw== Message-ID: <683bdf11-a662-d17e-8bc5-b3cfd238e463@gmail.com> Date: Thu, 30 Aug 2018 17:47:33 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20180827082153.22537-7-johan@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/27/2018 01:21 AM, Johan Hovold wrote: > Use the new of_get_compatible_child() helper to lookup the mdio child > node instead of using of_find_compatible_node(), which searches the > entire tree from a given start node and thus can return an unrelated > (i.e. non-child) node. > > This also addresses a potential use-after-free (e.g. after probe > deferral) as the tree-wide helper drops a reference to its first > argument (i.e. the node of the device being probed). > > Fixes: aa09677cba42 ("net: bcmgenet: add MDIO routines") > Cc: stable # 3.15 > Cc: Florian Fainelli > Cc: David S. Miller > Signed-off-by: Johan Hovold Reviewed-by: Florian Fainelli -- Florian