From mboxrd@z Thu Jan 1 00:00:00 1970 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 13B52C3A5A1 for ; Thu, 22 Aug 2019 17:48:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D79DE20856 for ; Thu, 22 Aug 2019 17:48:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566496080; bh=AVGNpKB1RDr8KZFmCHuUjaIXdHbRFaHjyTBQv44RL3s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=h3lQJPsfO8vjWXFDVz2KFsmuws8uxggvg2iwalwbDWjY5qNQ6bx1eJ+Y8rwwh41Nr 4SIU0P02h9w9uD7nJB4xARQ45ZM3NMowGTCL6QCHNPJrDXhVp57H0xVLdstFms/Y2U mcUM3IE6pIjbZMaJWXCYGNPOW3zoEiFEYQ+fwduI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391372AbfHVRWe (ORCPT ); Thu, 22 Aug 2019 13:22:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:40724 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391325AbfHVRW2 (ORCPT ); Thu, 22 Aug 2019 13:22:28 -0400 Received: from localhost (wsip-184-188-36-2.sd.sd.cox.net [184.188.36.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0722723406; Thu, 22 Aug 2019 17:22:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566494548; bh=AVGNpKB1RDr8KZFmCHuUjaIXdHbRFaHjyTBQv44RL3s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QcVh95FBelO+Zo2iHYe9rU/xQbDqhkjkgwYz9hczyfGbsbZaAQA3KjE63f8KTmuZ4 EZT4GGgCiwwuduGqf9tpBeoM2h3v4ORBuK5QxC/l1aUZrVVYqObXcCEsHV0flV0Gz2 MtPdQjV9OdQQQsm4JevSX6CTD+vjyNfnbwODCpJo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Joerg Roedel , Thomas Gleixner , Dave Hansen Subject: [PATCH 4.4 03/78] x86/mm: Check for pfn instead of page in vmalloc_sync_one() Date: Thu, 22 Aug 2019 10:18:07 -0700 Message-Id: <20190822171832.145137492@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190822171832.012773482@linuxfoundation.org> References: <20190822171832.012773482@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Joerg Roedel commit 51b75b5b563a2637f9d8dc5bd02a31b2ff9e5ea0 upstream. Do not require a struct page for the mapped memory location because it might not exist. This can happen when an ioremapped region is mapped with 2MB pages. Fixes: 5d72b4fba40ef ('x86, mm: support huge I/O mapping capability I/F') Signed-off-by: Joerg Roedel Signed-off-by: Thomas Gleixner Reviewed-by: Dave Hansen Link: https://lkml.kernel.org/r/20190719184652.11391-2-joro@8bytes.org Signed-off-by: Greg Kroah-Hartman --- arch/x86/mm/fault.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -222,7 +222,7 @@ static inline pmd_t *vmalloc_sync_one(pg if (!pmd_present(*pmd)) set_pmd(pmd, *pmd_k); else - BUG_ON(pmd_page(*pmd) != pmd_page(*pmd_k)); + BUG_ON(pmd_pfn(*pmd) != pmd_pfn(*pmd_k)); return pmd_k; }