Received: by 2002:a05:6358:1087:b0:cb:c9d3:cd90 with SMTP id j7csp909149rwi; Thu, 20 Oct 2022 06:40:55 -0700 (PDT) X-Google-Smtp-Source: AMsMyM4RtQXQWRWPisO1aKd8N+NiQ9Qhx7dtXS05PsJqEEbXaN6pXIfigWr9w3/UNSrf6BEVmJNA X-Received: by 2002:aa7:de10:0:b0:458:e101:fe54 with SMTP id h16-20020aa7de10000000b00458e101fe54mr12052264edv.80.1666273255369; Thu, 20 Oct 2022 06:40:55 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1666273255; cv=none; d=google.com; s=arc-20160816; b=hClLKCzrmixaMorUVn2Dz1c+zutoNXqyHPqC3+9ruFCX2nfuTOs6NFk+zDvAW2SQcO Rg7htwt1ke4m8ZiTJcR33/QWZrhVx1r6kq2JF1ytEy9w3qN/rFGTxXVDbgOXi8gvMimk VWcgUMbTzb8lRxfmyEX1ex0HfacHlK0mNvJuxtADti6wyIYX+j7k7UJnLffkS5ZLsLNM 5UGmGdLEOb+tdExU0ip78sG54KoD/FkWxPZP89VfMR/I/PFzbIqTQB1W8NYr+W15MdWU oemCsSVjcZK9KIkjmijMLpDxlpRAO5oOWI+7w+Q1o+y2n5FNbdBYWEPVG/eTQzm6UGIc d0JQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=8WizxLCtcxy1D4L/JONhRRnW8isbpIwFUa0XYPVILDI=; b=VAl+0cQ2fTniZEjyC2e3FybTDGlfvUj9pRCHiRRf66cU+WG0DlL+rr0kgU4fzS9PME mw5bs6sB3fjUCjgB6g5AsumzgaRS4nOXfGpHdHOnjBhMbWlO6yqOJxtX+CBWsa5jYdSu du5FgXh5tuUK4OIJDW04XDvti9jSAJR5sLbihKKkZu5XrsjR+6Wn8bL3R/+8HGhaGQVW NwRqOGQC9oedE3JOm9U8RsgolwsxjCSuCSVU5PpQ+EGyf7o8KJEzUf09JX8Uarh7Ek3k AjDP16WqNFx7OetEjmgqdr3N0NBofbBz98bfMvx/3FciLmCBtlAh8vxsLKQzV4uG1oGj E6zQ== 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=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id y12-20020a056402270c00b0045d636ca148si14532036edd.575.2022.10.20.06.40.28; Thu, 20 Oct 2022 06:40:55 -0700 (PDT) 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=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229940AbiJTM6x (ORCPT + 99 others); Thu, 20 Oct 2022 08:58:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229679AbiJTM6w (ORCPT ); Thu, 20 Oct 2022 08:58:52 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0EA1318A00B; Thu, 20 Oct 2022 05:58:51 -0700 (PDT) Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4MtSGM3QBlzmV9g; Thu, 20 Oct 2022 20:54:03 +0800 (CST) Received: from kwepemm600009.china.huawei.com (7.193.23.164) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Thu, 20 Oct 2022 20:58:48 +0800 Received: from huawei.com (10.175.127.227) by kwepemm600009.china.huawei.com (7.193.23.164) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Thu, 20 Oct 2022 20:58:47 +0800 From: Yu Kuai To: , , , , , , , CC: , , , Subject: [PATCH -nect RFC v2 0/2] block: fix uaf in bd_link_disk_holder() Date: Thu, 20 Oct 2022 21:20:47 +0800 Message-ID: <20221020132049.3947415-1-yukuai3@huawei.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.127.227] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600009.china.huawei.com (7.193.23.164) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS 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 Changes in v2: - in order to know when bd_holder_dir will be freed, instead of changing kobject_put(), add a new field in block_device. Yu Kuai (2): block: add helpers for bd_holder_dir refcount management block: fix uaf for bd_holder_dir block/blk.h | 3 +++ block/genhd.c | 33 ++++++++++++++++++++++++++++++++- block/holder.c | 19 +++++++++++++------ block/partitions/core.c | 5 ++++- include/linux/blk_types.h | 1 + 5 files changed, 53 insertions(+), 8 deletions(-) -- 2.31.1