Message ID | 20221205034108.3365182-3-mawupeng1@huawei.com (mailing list archive) |
---|---|
State | New |
Headers | show
Return-Path: <owner-linux-mm@kvack.org> X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9CD5C47088 for <linux-mm@archiver.kernel.org>; Mon, 5 Dec 2022 03:41:29 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7D90C8E0003; Sun, 4 Dec 2022 22:41:28 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 739328E0001; Sun, 4 Dec 2022 22:41:28 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 31A9C8E0002; Sun, 4 Dec 2022 22:41:28 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 055878E0002 for <linux-mm@kvack.org>; Sun, 4 Dec 2022 22:41:28 -0500 (EST) Received: from smtpin23.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id CD54F804B5 for <linux-mm@kvack.org>; Mon, 5 Dec 2022 03:41:27 +0000 (UTC) X-FDA: 80206852614.23.3593B64 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by imf16.hostedemail.com (Postfix) with ESMTP id DD7C4180010 for <linux-mm@kvack.org>; Mon, 5 Dec 2022 03:41:26 +0000 (UTC) Authentication-Results: imf16.hostedemail.com; dkim=none; dmarc=pass (policy=quarantine) header.from=huawei.com; spf=pass (imf16.hostedemail.com: domain of mawupeng1@huawei.com designates 45.249.212.187 as permitted sender) smtp.mailfrom=mawupeng1@huawei.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1670211687; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LsUG+ktbq1HteG4P3qrmzHvqbBSzloKCVllJKQeoous=; b=NqaspaT2puoe8oUrKv80mw+lA0yhhlUHqXKeKeikl2SGinToOYEwm6BjCx+5uCy2dwBqHE XHbYydAkcGBYx9M16f/QS4XKGX/neDvaqfVIIWP6APXDKhnuYWLIAtvjb63mJSd1NeJDeN TxKGfiHtcdt1VLmQxg+rfj6dXjC/vVk= ARC-Authentication-Results: i=1; imf16.hostedemail.com; dkim=none; dmarc=pass (policy=quarantine) header.from=huawei.com; spf=pass (imf16.hostedemail.com: domain of mawupeng1@huawei.com designates 45.249.212.187 as permitted sender) smtp.mailfrom=mawupeng1@huawei.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1670211687; a=rsa-sha256; cv=none; b=iK3ME+pBI2U46O0qYHgofcd6HRo088eRO2LisL7lHmBGYXYjqX4fmqa+cHZXNH0XDExnat 5CtEkH8IUpIW6uYIrn2J1wRXGEX8ybWzkkrUVz4d3lAzjAwveeBiTIukvyMHO33aHcA5RS B6fbwPQ/Ir53rpyT6D6RzWfp310nQs0= Received: from dggpemm500014.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4NQTkg3JbbzqStg; Mon, 5 Dec 2022 11:37:15 +0800 (CST) Received: from localhost.localdomain (10.175.112.125) by dggpemm500014.china.huawei.com (7.185.36.153) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Mon, 5 Dec 2022 11:41:22 +0800 From: Wupeng Ma <mawupeng1@huawei.com> To: <akpm@linux-foundation.org> CC: <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>, <mawupeng1@huawei.com>, <kuleshovmail@gmail.com>, <aneesh.kumar@linux.ibm.com>, <clameter@sgi.com> Subject: [PATCH 2/4] mm/mempolicy: return EINVAL for illegal user memory range for set_mempolicy_home_node Date: Mon, 5 Dec 2022 11:41:06 +0800 Message-ID: <20221205034108.3365182-3-mawupeng1@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221205034108.3365182-1-mawupeng1@huawei.com> References: <20221205034108.3365182-1-mawupeng1@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemm500014.china.huawei.com (7.185.36.153) X-CFilter-Loop: Reflected X-Spamd-Result: default: False [1.24 / 9.00]; BAYES_HAM(-2.56)[89.89%]; R_MISSING_CHARSET(2.50)[]; SUBJECT_HAS_UNDERSCORES(1.00)[]; MID_CONTAINS_FROM(1.00)[]; DMARC_POLICY_ALLOW(-0.50)[huawei.com,quarantine]; R_SPF_ALLOW(-0.20)[+ip4:45.249.212.187/29:c]; RCVD_NO_TLS_LAST(0.10)[]; MIME_GOOD(-0.10)[text/plain]; FROM_EQ_ENVFROM(0.00)[]; RCPT_COUNT_SEVEN(0.00)[7]; R_DKIM_NA(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; MIME_TRACE(0.00)[0:+]; HAS_XOIP(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; FROM_HAS_DN(0.00)[]; ARC_SIGNED(0.00)[hostedemail.com:s=arc-20220608:i=1]; TO_DN_NONE(0.00)[]; ARC_NA(0.00)[] X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: DD7C4180010 X-Stat-Signature: hqfpjsdfwm8hni4xi7da4aundqqjmhtq X-HE-Tag: 1670211686-132617 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
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return EINVAL for illegal user memory range
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expand
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diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 61aa9aedb728..e3a2c465fe8a 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1499,6 +1499,10 @@ SYSCALL_DEFINE4(set_mempolicy_home_node, unsigned long, start, unsigned long, le start = untagged_addr(start); if (start & ~PAGE_MASK) return -EINVAL; + + if (unlikely(!access_ok((void __user *)start, len))) + return -EINVAL; + /* * flags is used for future extension if any. */