From patchwork Tue Oct 18 13:14:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 13010497 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5FB4C433FE for ; Tue, 18 Oct 2022 12:52:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230241AbiJRMww (ORCPT ); Tue, 18 Oct 2022 08:52:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50500 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230215AbiJRMwu (ORCPT ); Tue, 18 Oct 2022 08:52:50 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A07B6C4C32; Tue, 18 Oct 2022 05:52:49 -0700 (PDT) Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4MsDKh5h6nzHv1m; Tue, 18 Oct 2022 20:52:40 +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; Tue, 18 Oct 2022 20:52:28 +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; Tue, 18 Oct 2022 20:52:28 +0800 From: Yu Kuai To: , , , , , CC: , , , , Subject: [PATCH RFC 0/2] block: fix uaf in bd_link_disk_holder() Date: Tue, 18 Oct 2022 21:14:30 +0800 Message-ID: <20221018131432.434167-1-yukuai3@huawei.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-Originating-IP: [10.175.127.227] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemm600009.china.huawei.com (7.193.23.164) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Yu Kuai (2): kobject: add return value for kobject_put() block: protect slave_dir/bd_holder_dir by open_mutex block/genhd.c | 8 ++++++-- block/holder.c | 13 ++++++++++++- block/partitions/core.c | 5 ++++- include/linux/kobject.h | 2 +- lib/kobject.c | 7 +++++-- 5 files changed, 28 insertions(+), 7 deletions(-)