From patchwork Mon Aug 9 03:09:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 12425263 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT 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 89E31C4338F for ; Mon, 9 Aug 2021 02:58:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 58F3160F9E for ; Mon, 9 Aug 2021 02:58:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231830AbhHIC7G (ORCPT ); Sun, 8 Aug 2021 22:59:06 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:13402 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229977AbhHIC7G (ORCPT ); Sun, 8 Aug 2021 22:59:06 -0400 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4Gjgfz2dd7zcmGX; Mon, 9 Aug 2021 10:55:07 +0800 (CST) Received: from dggema762-chm.china.huawei.com (10.1.198.204) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Mon, 9 Aug 2021 10:58:44 +0800 Received: from huawei.com (10.175.127.227) by dggema762-chm.china.huawei.com (10.1.198.204) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Mon, 9 Aug 2021 10:58:44 +0800 From: Yu Kuai To: , , , CC: , , , , Subject: [PATCH v2 0/2] fix request uaf in nbd_read_stat() Date: Mon, 9 Aug 2021 11:09:25 +0800 Message-ID: <20210809030927.1946162-1-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 dggema762-chm.china.huawei.com (10.1.198.204) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org This patchset fix request uaf in nbd, other drivers might have the same problem. Will fix them later if this patchset is accepted. Changes in v2: - as Bart suggested, add a new helper function for drivers to get request by tag. Yu Kuai (2): blk-mq: add a new interface to get request by tag nbd: convert to use blk_mq_get_rq_by_tag() block/blk-mq-tag.c | 33 +++++++++++++++++++++++++++++++++ block/blk-mq.c | 1 + block/blk-mq.h | 1 - drivers/block/nbd.c | 11 ++++++----- include/linux/blk-mq.h | 3 +++ 5 files changed, 43 insertions(+), 6 deletions(-)