Received: by 2002:a05:6a10:1a4d:0:0:0:0 with SMTP id nk13csp6441965pxb; Tue, 15 Feb 2022 02:31:07 -0800 (PST) X-Google-Smtp-Source: ABdhPJxHdRhHxbwLIg2cm9ZOa+CjkLBJYz8kmkfo8svPYS3iSH/PDwB8wbYJ1CK6uGwwfypNuL7n X-Received: by 2002:a17:903:248:: with SMTP id j8mr3455641plh.123.1644921067578; Tue, 15 Feb 2022 02:31:07 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1644921067; cv=none; d=google.com; s=arc-20160816; b=wLoX1Dy//mIYfJw+H6Vh9gfZ/M2HJC3jYQrQCSljaNKDHmMyCjckNODWGkamCfqciU y091zGesn2Z+8KCzAfIq4RphYZsbujVkmRj4d4FW/0A+6UQVAQGvEMysyFQKp70tbDzJ GYo/OfuIarzjo5IOB5osdS811iS82gyV8/EidLjVg5uI2AdC8z+JgiGDRRLoqWcQS0ro vNOTHXj+YmtYjgAQGlXD7jR5BzXQsea7D2vK/odd9qL1TIAJ7DvDP77U5xjIZaqw/zwS y5KN9urAkW5LdEQH+5sfVmM4J0nKMsL36rjnrB0A6T2onzZeDj1J0MUfzeTaYFHQ+Ln2 ECVQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :in-reply-to:mime-version:user-agent:date:message-id:autocrypt:from :references:cc:to:subject; bh=qF7rk6cS2LKgNtJ1dq/vQbeS5icjgs/PhIchGRc3PXg=; b=bzMbal9b93jbddgRxDXKGsy46cIqLYg9/SCLG93ZWJ7qGHW4w1GIj9WyNbZ47wqtGC dJDwEyyOv18A9NACsdNN4RDK+DF5Aep6gojKA4tsJEjwbTpOR15KqkfkY3f8rX9+Z8of 7HNNGSHIL7WaLvhTc/jmTK9lC332QVCNzyi+J5UDZCfd4UZrGbtdrofvAbgh1vc17lIL cruGeoLn1mS2QnaquaV5CnJGD9gZ8JaA01oWrZ6gk30ku6qw687Wa5HnacfHf0Ufxytx ncmdKG7vjGgc/+UlQBJ9dp4kjIewATAqLXLRg7AY5kdhg5NVrylIkspUT64v6/8NWKql WAaA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=ispras.ru Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id l11si9981065plg.511.2022.02.15.02.30.53; Tue, 15 Feb 2022 02:31:07 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=ispras.ru Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236284AbiBOKGm (ORCPT + 99 others); Tue, 15 Feb 2022 05:06:42 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:42624 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236278AbiBOKGk (ORCPT ); Tue, 15 Feb 2022 05:06:40 -0500 Received: from mail.ispras.ru (mail.ispras.ru [83.149.199.84]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 167DD6E4D7; Tue, 15 Feb 2022 02:06:28 -0800 (PST) Received: from [10.10.2.52] (unknown [10.10.2.52]) by mail.ispras.ru (Postfix) with ESMTPSA id 46CBB4076B21; Tue, 15 Feb 2022 10:06:26 +0000 (UTC) Subject: Re: [PATCH 5.10 073/116] net: dsa: lantiq_gswip: dont use devres for mdiobus To: Vladimir Oltean Cc: Greg Kroah-Hartman , "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" , Florian Fainelli , Jakub Kicinski , Sasha Levin References: <20220214092458.668376521@linuxfoundation.org> <20220214092501.284425363@linuxfoundation.org> <1e75b66a-295b-02bc-b4c5-421aec2cae96@ispras.ru> <20220215094549.7no3e2repjvpunyk@skbuf> From: Alexey Khoroshilov Autocrypt: addr=khoroshilov@ispras.ru; prefer-encrypt=mutual; keydata= xsFNBFtq9eIBEACxmOIPDht+aZvO9DGi4TwnZ1WTDnyDVz3Nnh0rlQCK8IssaT6wE5a95VWo iwOWalcL9bJMHQvw60JwZKFjt9oH2bov3xzx/JRCISQB4a4U1J/scWvPtabbB3t+VAodF5KZ vZ2gu/Q/Wa5JZ9aBH0IvNpBAAThFg1rBXKh7wNqrhsQlMLg+zTSK6ZctddNl6RyaJvAmbaTS sSeyUKXiabxHn3BR9jclXfmPLfWuayinBvW4J3vS+bOhbLxeu3MO0dUqeX/Nl8EAhvzo0I2d A0vRu/Ze1wU3EQYT6M8z3i1b3pdLjr/i+MI8Rgijs+TFRAhxRw/+0vHGTg6Pn02t0XkycxQR mhH3v0kVTvMyM7YSI7yXvd0QPxb1RX9AGmvbJu7eylzcq9Jla+/T3pOuWsJkbvbvuFKKmmYY WnAOR7vu/VNVfiy4rM0bfO14cIuEG+yvogcPuMmQGYu6ZwS9IdgZIOAkO57M/6wR0jIyfxrG FV3ietPtVcqeDVrcShKyziRLJ+Xcsg9BLdnImAqVQomYr27pyNMRL5ILuT7uOuAQPDKBksK+ l2Fws0d5iUifqnXSPuYxqgS4f8SQLS7ECxvCGVVbkEEng9vkkmyrF6wM86BZ9apPGDFbopiK 7GRxQtSGszVv83abaVb8aDsAudJIp7lLaIuXLZAe1r+ycYpEtQARAQABzSpBbGV4ZXkgS2hv cm9zaGlsb3YgPGtob3Jvc2hpbG92QGlzcHJhcy5ydT7CwX0EEwEIACcFAltq9eICGwMFCRLM AwAFCwkIBwIGFQgJCgsCBBYCAwECHgECF4AACgkQ2B/JSzCwrEWLaA/+NFZfyhU0vJzFtYsk yaqx8nWZLrAoUK7VcobH0lJH6lfGbarO5JpENaIiTP12YZ4xO+j3GGJtLy2gvnpypGnxmiAl RqPt7WeAIj6oqPrUs2QF7i4SOiPtku/NrysI1zHzlA8yqUduBtam5rdQeLRNCJiEED1fU8sp +DgJBN/OHEDyAag2hu1KFKWuPfQ+QGpXYZb+1NW/hKwvvwCNVyypELAfFnkketFXjIMwHnL8 ZPqJZlkvkpxuRXOaXPL9NFhZnC/WS+NJ81L3pr+w6eo3xTPYZvRW8glvqlEDgHqr3uMGIaes nwfRXLHp+TC1ht6efCXzdPyMZ1E7HXQN9foKisI1V5iQFhN+CT3dbsguQI4e10F5ql0TZUJY SMzvY0eObs6TWRdD/Ha7Y5rLmZ54R9sxumpZNcJzktfgm9f0XfeqVEJUn/40MRDD+l2W12Db Jkko+sbtAEw+f+/j3uz8xOE+Uv4kwFC5a6JKgdX88oigHnpAs3FvffP594Loi3ibFrQUW5wH bXh5Ni+l1GKEQ0PHMk+KQQT9L2r9s7C0Nh8XzwdpOshZWsrNSZqcG+01wrmUhyX2uSaoZ07I /+KZURlMSqI71X6lkMWlB3SyThvYhHgnR0EGGTerwM1MaVjHN+Z6lPmsKNxG8lzCeWeZ6peA c5oUHV4WQ8Ux9BM8saLOwU0EW2r14gEQAMz+5u+X7j1/dT4WLVRQaE1Shnd2dKBn2E7fgo/N 4JIY6wHD/DJoWYQpCJjjvBYSonvQsHicvDW8lPh2EXgZ9Fi8AHKT2mVPitVy+uhfWa/0FtsC e3hPfrjTcN7BUcXlIjmptxIoDbvQrNfIWUGdWiyDj4EDfABW/kagXqaBwF2HdcDaNDGggD1c DglA0APjezIyTGnGMKsi5QSSlOLm8OZEJMj5t+JL6QXrruijNb5Asmz5mpRQrak7DpGOskjK fClm/0oy2zDvWuoXJa+dm3YFr43V+c5EIMA4LpGk63Eg+5NltQ/gj0ycgD5o6reCbjLz4R9D JzBezK/KOQuNG5qKUTMbOHWaApZnZ6BDdOVflkV1V+LMo5GvIzkATNLm/7Jj6DmYmXbKoSAY BKZiJWqzNsL1AJtmJA1y5zbWX/W4CpNs8qYMYG8eTNOqunzopEhX7T0cOswcTGArZYygiwDW BuIS83QRc7udMlQg79qyMA5WqS9g9g/iodlssR9weIVoZSjfjhm5NJ3FmaKnb56h6DSvFgsH xCa4s1DGnZGSAtedj8E3ACOsEfu4J/WqXEmvMYNBdGos2YAc+g0hjuOB10BSD98d38xP1vPc qNrztIF+TODAl1dNwU4rCSdGQymsrMVFuXnHMH4G+dHvMAwWauzDbnILHAGFyJtfxVefABEB AAHCwWUEGAEIAA8FAltq9eICGwwFCRLMAwAACgkQ2B/JSzCwrEU3Rg//eFWHXqTQ5CKw4KrX kTFxdXnYKJ5zZB0EzqU6m/FAV7snmygFLbOXYlcMW2Fh306ivj9NKJrlOaPbUzzyDf8dtDAg nSbH156oNJ9NHkz0mrxFMpJA2E5AUemOFx57PUYt93pR2B7bF2zGua4gMC+vorDQZjX9kvrL Kbenh3boFOe1tUaiRRvEltVFLOg+b+CMkKVbLIQe/HkyKJH5MFiHAF7QxnPHaxyO7QbWaUmF 6BHVujxAGvNgkrYJb6dpiNNZSFNRodaSToU5oM+z1dCrNNtN3u4R7AYr6DDIDxoSzR4k0ZaG uSeqh4xxQCD7vLT3JdZDyhYUJgy9mvSXdkXGdBIhVmeLch2gaWNf5UOutVJwdPbIaUDRjVoV Iw6qjKq+mnK3ttuxW5Aeg9Y1OuKEvCVu+U/iEEJxx1JRmVAYq848YqtVPY9DkZdBT4E9dHqO n8lr+XPVyMN6SBXkaR5tB6zSkSDrIw+9uv1LN7QIri43fLqhM950ltlveROEdLL1bI30lYO5 J07KmxgOjrvY8X9WOC3O0k/nFpBbbsM4zUrmF6F5wIYO99xafQOlfpUnVtbo3GnBR2LIcPYj SyY3dW28JXo2cftxIOr1edJ+fhcRqYRrPzJrQBZcE2GZjRO8tz6IOMAsc+WMtVfj5grgVHCu kK2E04Fb+Zk1eJvHYRc= Message-ID: <3e589a89-2c5d-61e4-c81e-94a8bf728f7e@ispras.ru> Date: Tue, 15 Feb 2022 13:06:26 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20220215094549.7no3e2repjvpunyk@skbuf> Content-Type: text/plain; charset=utf-8 Content-Language: ru-RU Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 15.02.2022 12:45, Vladimir Oltean wrote: > On Tue, Feb 15, 2022 at 12:35:44PM +0300, Alexey Khoroshilov wrote: >>> if (priv->ds->slave_mii_bus) { >>> mdiobus_unregister(priv->ds->slave_mii_bus); >>> + mdiobus_free(priv->ds->slave_mii_bus); >>> of_node_put(priv->ds->slave_mii_bus->dev.of_node); >>> } >> >> >> Should >> of_node_put(priv->ds->slave_mii_bus->dev.of_node); >> be here before >> mdiobus_free(priv->ds->slave_mii_bus); >> ? > > Thanks for noticing. Yes, this would avoid a use-after-free. > Do you mind sending a patch to correct this? > Surely, I will do. -- Alexey