Message ID | 20220513142230.486646732@linuxfoundation.org |
---|---|
State | New |
Headers | show
Return-Path: <stable-owner@kernel.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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4598CC4332F for <stable@archiver.kernel.org>; Fri, 13 May 2022 14:31:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1380864AbiEMObg (ORCPT <rfc822;stable@archiver.kernel.org>); Fri, 13 May 2022 10:31:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46814 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1381193AbiEMObJ (ORCPT <rfc822;stable@vger.kernel.org>); Fri, 13 May 2022 10:31:09 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C32B4197F67; Fri, 13 May 2022 07:28:36 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3080C62175; Fri, 13 May 2022 14:28:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 12234C34100; Fri, 13 May 2022 14:28:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1652452115; bh=jrRvUIKYf1n5UNwFP4Jhq6pBwQ4NWVjBYb4qxpwM3tw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LHl2ywcbzOHeLrZNPgQT9tEt0by+/mHq8C+5VpSxE/OJMizFQ0vAOjlxohlIRABM+ nBRe7HQe4+k6E1ZSs8LHPwyCdGNMf6+T3mS3YE+sZUbCcmls3CzrDa1eaZifYRPP8q Ku+UiN9DlQbgotsAAw4WZfE/zX4CWUIVBscCYZqY= From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, stable@vger.kernel.org, Peter Xu <peterx@redhat.com>, John Hubbard <jhubbard@nvidia.com>, Claudio Imbrenda <imbrenda@linux.ibm.com>, Alex Williamson <alex.williamson@redhat.com>, Christoph Hellwig <hch@lst.de>, Jan Kara <jack@suse.cz>, Andrea Arcangeli <aarcange@redhat.com>, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>, Jason Gunthorpe <jgg@ziepe.ca>, David Hildenbrand <david@redhat.com>, Lukas Bulwahn <lukas.bulwahn@gmail.com>, "Matthew Wilcox (Oracle)" <willy@infradead.org>, Jason Gunthorpe <jgg@nvidia.com>, Andrew Morton <akpm@linux-foundation.org>, Linus Torvalds <torvalds@linux-foundation.org> Subject: [PATCH 5.15 21/21] mm: fix invalid page pointer returned with FOLL_PIN gups Date: Fri, 13 May 2022 16:24:03 +0200 Message-Id: <20220513142230.486646732@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220513142229.874949670@linuxfoundation.org> References: <20220513142229.874949670@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: <stable.vger.kernel.org> X-Mailing-List: stable@vger.kernel.org |
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--- a/mm/gup.c +++ b/mm/gup.c @@ -465,7 +465,7 @@ static int follow_pfn_pte(struct vm_area pte_t *pte, unsigned int flags) { /* No page to get reference */ - if (flags & FOLL_GET) + if (flags & (FOLL_GET | FOLL_PIN)) return -EFAULT; if (flags & FOLL_TOUCH) {