From patchwork Mon Jun 17 12:27:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 10998991 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2157214B6 for ; Mon, 17 Jun 2019 12:27:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0F6901FF0B for ; Mon, 17 Jun 2019 12:27:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 03C3C2867F; Mon, 17 Jun 2019 12:27:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 973E5285A3 for ; Mon, 17 Jun 2019 12:27:58 +0000 (UTC) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id 916C82129DB9D; Mon, 17 Jun 2019 05:27:58 -0700 (PDT) X-Original-To: linux-nvdimm@lists.01.org Delivered-To: linux-nvdimm@lists.01.org Received-SPF: None (no SPF record) identity=mailfrom; client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=batv+a9ecd0bfb5b639be820a+5776+infradead.org+hch@bombadil.srs.infradead.org; receiver=linux-nvdimm@lists.01.org Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id EDD752194EB76 for ; Mon, 17 Jun 2019 05:27:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=oE9zu8FnI80f0vIXdSsRJj3CowB8S40euLFZ8PS9IMM=; b=OFYLPou6TnJdcozuPN11iH/XmD RXqmC2lmrDIc90Y8NVCjfx83nqCVoiH00luftBKkX1QDJ9uDCWGmyeDihR9euPlBZLFFLvJEN37Oo IIGmTTp9s0JMz7OdQZzjJL8bCIoH3QG3msxcqq8GDVUPyrKek3uGmO1P50zrhewkvIMSsilKB9HGc i4vW8MnTCxNbowvDwKJqKc0RrobmUyUT5HllZCeGgrgyTx/O9YaW+CGOhU3j1YYqPcXiTiC58Lsdi v5jaT4YEYq+jrlR8fw59fAbQne0n1H6nJnvoV8aVZnyedTnbxgGT+xJd2gzeJqPQ1tUfzHY9lv2CT M6eP8oLQ==; Received: from clnet-p19-102.ikbnet.co.at ([83.175.77.102] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hcqjo-00006K-S6; Mon, 17 Jun 2019 12:27:53 +0000 From: Christoph Hellwig To: Dan Williams , =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= , Jason Gunthorpe , Ben Skeggs Subject: [PATCH 07/25] memremap: validate the pagemap type passed to devm_memremap_pages Date: Mon, 17 Jun 2019 14:27:15 +0200 Message-Id: <20190617122733.22432-8-hch@lst.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190617122733.22432-1-hch@lst.de> References: <20190617122733.22432-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linux-nvdimm@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Linux-nvdimm developer list." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-nvdimm@lists.01.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, nouveau@lists.freedesktop.org Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" X-Virus-Scanned: ClamAV using ClamSMTP Most pgmap types are only supported when certain config options are enabled. Check for a type that is valid for the current configuration before setting up the pagemap. Signed-off-by: Christoph Hellwig --- kernel/memremap.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/kernel/memremap.c b/kernel/memremap.c index 6e1970719dc2..6a2dd31a6250 100644 --- a/kernel/memremap.c +++ b/kernel/memremap.c @@ -157,6 +157,33 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap) pgprot_t pgprot = PAGE_KERNEL; int error, nid, is_ram; + switch (pgmap->type) { + case MEMORY_DEVICE_PRIVATE: + if (!IS_ENABLED(CONFIG_DEVICE_PRIVATE)) { + WARN(1, "Device private memory not supported\n"); + return ERR_PTR(-EINVAL); + } + break; + case MEMORY_DEVICE_PUBLIC: + if (!IS_ENABLED(CONFIG_DEVICE_PUBLIC)) { + WARN(1, "Device public memory not supported\n"); + return ERR_PTR(-EINVAL); + } + break; + case MEMORY_DEVICE_FS_DAX: + if (!IS_ENABLED(CONFIG_ZONE_DEVICE) || + IS_ENABLED(CONFIG_FS_DAX_LIMITED)) { + WARN(1, "File system DAX not supported\n"); + return ERR_PTR(-EINVAL); + } + break; + case MEMORY_DEVICE_PCI_P2PDMA: + break; + default: + WARN(1, "Invalid pgmap type %d\n", pgmap->type); + break; + } + if (!pgmap->ref || !pgmap->kill || !pgmap->cleanup) { WARN(1, "Missing reference count teardown definition\n"); return ERR_PTR(-EINVAL);