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=-6.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,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 7AAE7C43381 for ; Fri, 22 Mar 2019 13:05:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3AD1020693 for ; Fri, 22 Mar 2019 13:05:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553259909; bh=ladJYFiMqQkcDHLCgdjDNr9Ut/c9XcELNIgK2p+BBgY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nkd4+87IfWYOOUAcVHQitHqPNGgrCuZISzRYQPJBVhhhJmlI3Zh6E1YNKgrQc6beg HvcO31iV3atx/2APL7grf4IopTCEgyN5q2HaQLzdHRJH/8nOAn9CVGSHf6+tDuYqli vIexnaZf7U6Odh4YD8YdVcwJEDDoOOgsxiJPcgqk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731090AbfCVLjP (ORCPT ); Fri, 22 Mar 2019 07:39:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:40838 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731078AbfCVLjM (ORCPT ); Fri, 22 Mar 2019 07:39:12 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 884B82082C; Fri, 22 Mar 2019 11:39:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553254752; bh=ladJYFiMqQkcDHLCgdjDNr9Ut/c9XcELNIgK2p+BBgY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YzD8o6de2Jibe2ORG1T254J+azh6OJDRDnuJDyy3eY1SYaav+IJa+rzuclE6lNklc m0j7vgSF74R0sAB443xgllP/ldGYdd5ctYFgN3jBx/54liuXiV33Aev8bdSaMfmxbZ NYbrW/ZPkIjgc2N9NNhenU3p4NU/Cql/UQ7cC3IU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, NeilBrown , Mike Snitzer , =?UTF-8?q?Guillaume=20Perr=C3=A9al?= Subject: [PATCH 4.4 214/230] dm: fix to_sector() for 32bit Date: Fri, 22 Mar 2019 12:15:52 +0100 Message-Id: <20190322111251.887145062@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190322111236.796964179@linuxfoundation.org> References: <20190322111236.796964179@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore 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 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: NeilBrown commit 0bdb50c531f7377a9da80d3ce2d61f389c84cb30 upstream. A dm-raid array with devices larger than 4GB won't assemble on a 32 bit host since _check_data_dev_sectors() was added in 4.16. This is because to_sector() treats its argument as an "unsigned long" which is 32bits (4GB) on a 32bit host. Using "unsigned long long" is more correct. Kernels as early as 4.2 can have other problems due to to_sector() being used on the size of a device. Fixes: 0cf4503174c1 ("dm raid: add support for the MD RAID0 personality") cc: stable@vger.kernel.org (v4.2+) Reported-and-tested-by: Guillaume Perréal Signed-off-by: NeilBrown Signed-off-by: Mike Snitzer Signed-off-by: Greg Kroah-Hartman --- include/linux/device-mapper.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -593,7 +593,7 @@ extern struct ratelimit_state dm_ratelim */ #define dm_target_offset(ti, sector) ((sector) - (ti)->begin) -static inline sector_t to_sector(unsigned long n) +static inline sector_t to_sector(unsigned long long n) { return (n >> SECTOR_SHIFT); }