From patchwork Sun Dec 6 23:10:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 11954479 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=-15.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY 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 6A474C4361B for ; Sun, 6 Dec 2020 23:11:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3283F23120 for ; Sun, 6 Dec 2020 23:11:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728288AbgLFXLk (ORCPT ); Sun, 6 Dec 2020 18:11:40 -0500 Received: from aserp2120.oracle.com ([141.146.126.78]:56588 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728209AbgLFXLk (ORCPT ); Sun, 6 Dec 2020 18:11:40 -0500 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 0B6N5tbg182066 for ; Sun, 6 Dec 2020 23:10:59 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : from : to : cc : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=corp-2020-01-29; bh=4gA34opggK7Ndss0t/uDyXTmxax/009tbcO1ItjmRO0=; b=P17KG8v9+DX6cFC0N2uv5v72iBL/QrwhXKHIWx3obBkrKJHCiHfMX42AAU63W5+8XV0F asjH36HiY5Ez9ELaxugvoYVzANElkIeoSjiRD+sZv+cpmQdgMOA9xWWcUyd9Kd5XTdhB 8XcGCgBH3ZoCRn3xJTGdcyzWM5taRJ7VtqtTigxM6hxRpIfjKPzlUL5U0IYCcd4nmkM1 b3csyucNsSr8FY7rKjxKXAk1317JGlrupGkJM0egvsNzuHymMxQ/t2s7jgsJMW6wsrcJ d3VozlrhtxldRKpGav4pwwkdWmjAxOB69EjKtQXHnyOe5zWLAxoMbdME/B0K2ucBtxfa eA== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by aserp2120.oracle.com with ESMTP id 35825ktuhh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Sun, 06 Dec 2020 23:10:58 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 0B6NAMM4005637 for ; Sun, 6 Dec 2020 23:10:58 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by aserp3020.oracle.com with ESMTP id 358m3vpdwm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Sun, 06 Dec 2020 23:10:58 +0000 Received: from abhmp0015.oracle.com (abhmp0015.oracle.com [141.146.116.21]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 0B6NAw5o012031 for ; Sun, 6 Dec 2020 23:10:58 GMT Received: from localhost (/67.169.218.210) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sun, 06 Dec 2020 15:10:57 -0800 Subject: [PATCH 1/4] xfs: refactor data device extent validation From: "Darrick J. Wong" To: darrick.wong@oracle.com Cc: linux-xfs@vger.kernel.org Date: Sun, 06 Dec 2020 15:10:57 -0800 Message-ID: <160729625702.1608297.4480089333393399990.stgit@magnolia> In-Reply-To: <160729625074.1608297.13414859761208067117.stgit@magnolia> References: <160729625074.1608297.13414859761208067117.stgit@magnolia> User-Agent: StGit/0.19 MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9827 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 malwarescore=0 adultscore=0 bulkscore=0 phishscore=0 suspectscore=1 mlxscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012060152 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9827 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 adultscore=0 bulkscore=0 phishscore=0 mlxlogscore=999 clxscore=1015 priorityscore=1501 mlxscore=0 spamscore=0 lowpriorityscore=0 malwarescore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012060151 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org From: Darrick J. Wong Refactor all the open-coded validation of non-static data device extents into a single helper. Signed-off-by: Darrick J. Wong Reviewed-by: Dave Chinner Reviewed-by: Brian Foster --- fs/xfs/libxfs/xfs_bmap.c | 8 ++------ fs/xfs/libxfs/xfs_types.c | 23 +++++++++++++++++++++++ fs/xfs/libxfs/xfs_types.h | 2 ++ fs/xfs/scrub/bmap.c | 5 +---- fs/xfs/xfs_bmap_item.c | 11 +---------- fs/xfs/xfs_extfree_item.c | 11 +---------- fs/xfs/xfs_refcount_item.c | 11 +---------- fs/xfs/xfs_rmap_item.c | 11 +---------- 8 files changed, 32 insertions(+), 50 deletions(-) diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index de9c27ef68d8..7f1b6ad570a9 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -6242,12 +6242,8 @@ xfs_bmap_validate_extent( if (!xfs_verify_rtbno(mp, endfsb)) return __this_address; } else { - if (!xfs_verify_fsbno(mp, irec->br_startblock)) - return __this_address; - if (!xfs_verify_fsbno(mp, endfsb)) - return __this_address; - if (XFS_FSB_TO_AGNO(mp, irec->br_startblock) != - XFS_FSB_TO_AGNO(mp, endfsb)) + if (!xfs_verify_fsbext(mp, irec->br_startblock, + irec->br_blockcount)) return __this_address; } if (irec->br_state != XFS_EXT_NORM && whichfork != XFS_DATA_FORK) diff --git a/fs/xfs/libxfs/xfs_types.c b/fs/xfs/libxfs/xfs_types.c index 4f595546a639..b74866dbea94 100644 --- a/fs/xfs/libxfs/xfs_types.c +++ b/fs/xfs/libxfs/xfs_types.c @@ -61,6 +61,29 @@ xfs_verify_fsbno( return xfs_verify_agbno(mp, agno, XFS_FSB_TO_AGBNO(mp, fsbno)); } +/* + * Verify that a data device extent is fully contained inside the filesystem, + * does not cross an AG boundary, and does not point at static metadata. + */ +bool +xfs_verify_fsbext( + struct xfs_mount *mp, + xfs_fsblock_t fsbno, + xfs_fsblock_t len) +{ + if (fsbno + len <= fsbno) + return false; + + if (!xfs_verify_fsbno(mp, fsbno)) + return false; + + if (!xfs_verify_fsbno(mp, fsbno + len - 1)) + return false; + + return XFS_FSB_TO_AGNO(mp, fsbno) == + XFS_FSB_TO_AGNO(mp, fsbno + len - 1); +} + /* Calculate the first and last possible inode number in an AG. */ void xfs_agino_range( diff --git a/fs/xfs/libxfs/xfs_types.h b/fs/xfs/libxfs/xfs_types.h index 397d94775440..7feaaac25b3d 100644 --- a/fs/xfs/libxfs/xfs_types.h +++ b/fs/xfs/libxfs/xfs_types.h @@ -184,6 +184,8 @@ xfs_agblock_t xfs_ag_block_count(struct xfs_mount *mp, xfs_agnumber_t agno); bool xfs_verify_agbno(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agblock_t agbno); bool xfs_verify_fsbno(struct xfs_mount *mp, xfs_fsblock_t fsbno); +bool xfs_verify_fsbext(struct xfs_mount *mp, xfs_fsblock_t fsbno, + xfs_fsblock_t len); void xfs_agino_range(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agino_t *first, xfs_agino_t *last); diff --git a/fs/xfs/scrub/bmap.c b/fs/xfs/scrub/bmap.c index fed56d213a3f..3e2ba7875059 100644 --- a/fs/xfs/scrub/bmap.c +++ b/fs/xfs/scrub/bmap.c @@ -359,10 +359,7 @@ xchk_bmap_iextent( xchk_fblock_set_corrupt(info->sc, info->whichfork, irec->br_startoff); if (!info->is_rt && - (!xfs_verify_fsbno(mp, irec->br_startblock) || - !xfs_verify_fsbno(mp, end) || - XFS_FSB_TO_AGNO(mp, irec->br_startblock) != - XFS_FSB_TO_AGNO(mp, end))) + !xfs_verify_fsbext(mp, irec->br_startblock, irec->br_blockcount)) xchk_fblock_set_corrupt(info->sc, info->whichfork, irec->br_startoff); diff --git a/fs/xfs/xfs_bmap_item.c b/fs/xfs/xfs_bmap_item.c index 8d3ed07800f6..5c9706760e68 100644 --- a/fs/xfs/xfs_bmap_item.c +++ b/fs/xfs/xfs_bmap_item.c @@ -452,16 +452,7 @@ xfs_bui_validate( if (bmap->me_startoff + bmap->me_len <= bmap->me_startoff) return false; - if (bmap->me_startblock + bmap->me_len <= bmap->me_startblock) - return false; - - if (!xfs_verify_fsbno(mp, bmap->me_startblock)) - return false; - - if (!xfs_verify_fsbno(mp, bmap->me_startblock + bmap->me_len - 1)) - return false; - - return true; + return xfs_verify_fsbext(mp, bmap->me_startblock, bmap->me_len); } /* diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c index bfdfbd192a38..93223ebb3372 100644 --- a/fs/xfs/xfs_extfree_item.c +++ b/fs/xfs/xfs_extfree_item.c @@ -584,16 +584,7 @@ xfs_efi_validate_ext( struct xfs_mount *mp, struct xfs_extent *extp) { - if (extp->ext_start + extp->ext_len <= extp->ext_start) - return false; - - if (!xfs_verify_fsbno(mp, extp->ext_start)) - return false; - - if (!xfs_verify_fsbno(mp, extp->ext_start + extp->ext_len - 1)) - return false; - - return true; + return xfs_verify_fsbext(mp, extp->ext_start, extp->ext_len); } /* diff --git a/fs/xfs/xfs_refcount_item.c b/fs/xfs/xfs_refcount_item.c index 937d482c9be4..07ebccbbf4df 100644 --- a/fs/xfs/xfs_refcount_item.c +++ b/fs/xfs/xfs_refcount_item.c @@ -439,16 +439,7 @@ xfs_cui_validate_phys( return false; } - if (refc->pe_startblock + refc->pe_len <= refc->pe_startblock) - return false; - - if (!xfs_verify_fsbno(mp, refc->pe_startblock)) - return false; - - if (!xfs_verify_fsbno(mp, refc->pe_startblock + refc->pe_len - 1)) - return false; - - return true; + return xfs_verify_fsbext(mp, refc->pe_startblock, refc->pe_len); } /* diff --git a/fs/xfs/xfs_rmap_item.c b/fs/xfs/xfs_rmap_item.c index 9b84017184d9..4fa875237422 100644 --- a/fs/xfs/xfs_rmap_item.c +++ b/fs/xfs/xfs_rmap_item.c @@ -493,16 +493,7 @@ xfs_rui_validate_map( if (rmap->me_startoff + rmap->me_len <= rmap->me_startoff) return false; - if (rmap->me_startblock + rmap->me_len <= rmap->me_startblock) - return false; - - if (!xfs_verify_fsbno(mp, rmap->me_startblock)) - return false; - - if (!xfs_verify_fsbno(mp, rmap->me_startblock + rmap->me_len - 1)) - return false; - - return true; + return xfs_verify_fsbext(mp, rmap->me_startblock, rmap->me_len); } /*