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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 76579C04E53 for ; Wed, 15 May 2019 11:56:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 486FF20843 for ; Wed, 15 May 2019 11:56:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557921379; bh=mhyy14vgVAy+d4nL/aZ/iHds1lg2+Fkskpbjpiimj3o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ybyTnt7vybeyoFz8TtKn6noWBughCjpd7WJ9xcKjh4PNl0OUDtkPzfHq+2W6HCbUJ 3TK7naiJ7553DmPhaXAtrlq63h6EFDsbapLDKMG++LJi155dgkmKFJcDA4Gj9GSQky w/A1WwI4pqQYcOqAGBVWyq+dzndcyCy8lMm7Upy0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730705AbfEOLRz (ORCPT ); Wed, 15 May 2019 07:17:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:55284 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730082AbfEOLRz (ORCPT ); Wed, 15 May 2019 07:17:55 -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 273EE20843; Wed, 15 May 2019 11:17:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557919074; bh=mhyy14vgVAy+d4nL/aZ/iHds1lg2+Fkskpbjpiimj3o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AysbwO+BIwI46uR1iDKx9f2sfCrkZoADMOxQnHLmqCV3gY6Prvlt37ytPiZXbYchb vETQuEVmly0nm19zq55/fuLKOOlB46aafR/iHQZqjub/O+ArrY6/rBSgnggsizzPqz dDTDY+uq/XyPVaWLjdKB/vT+r9/i5djRDq4pYnUA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Peter Oberparleiter , Stefan Haberland , Martin Schwidefsky , Sasha Levin Subject: [PATCH 4.14 013/115] s390/dasd: Fix capacity calculation for large volumes Date: Wed, 15 May 2019 12:54:53 +0200 Message-Id: <20190515090700.249208009@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190515090659.123121100@linuxfoundation.org> References: <20190515090659.123121100@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit 2cc9637ce825f3a9f51f8f78af7474e9e85bfa5f ] The DASD driver incorrectly limits the maximum number of blocks of ECKD DASD volumes to 32 bit numbers. Volumes with a capacity greater than 2^32-1 blocks are incorrectly recognized as smaller volumes. This results in the following volume capacity limits depending on the formatted block size: BLKSIZE MAX_GB MAX_CYL 512 2047 5843492 1024 4095 8676701 2048 8191 13634816 4096 16383 23860929 The same problem occurs when a volume with more than 17895697 cylinders is accessed in raw-track-access mode. Fix this problem by adding an explicit type cast when calculating the maximum number of blocks. Signed-off-by: Peter Oberparleiter Reviewed-by: Stefan Haberland Signed-off-by: Martin Schwidefsky Signed-off-by: Sasha Levin --- drivers/s390/block/dasd_eckd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 0a1e7f9b5239d..0d5e2d92e05bc 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -2001,14 +2001,14 @@ static int dasd_eckd_end_analysis(struct dasd_block *block) blk_per_trk = recs_per_track(&private->rdc_data, 0, block->bp_block); raw: - block->blocks = (private->real_cyl * + block->blocks = ((unsigned long) private->real_cyl * private->rdc_data.trk_per_cyl * blk_per_trk); dev_info(&device->cdev->dev, - "DASD with %d KB/block, %d KB total size, %d KB/track, " + "DASD with %u KB/block, %lu KB total size, %u KB/track, " "%s\n", (block->bp_block >> 10), - ((private->real_cyl * + (((unsigned long) private->real_cyl * private->rdc_data.trk_per_cyl * blk_per_trk * (block->bp_block >> 9)) >> 1), ((blk_per_trk * block->bp_block) >> 10), -- 2.20.1