From patchwork Tue Dec 1 03:38:10 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: 11941821 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=-17.2 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 68989C64E7A for ; Tue, 1 Dec 2020 03:38:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0981720796 for ; Tue, 1 Dec 2020 03:38:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="X3iJ8hf7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727786AbgLADiy (ORCPT ); Mon, 30 Nov 2020 22:38:54 -0500 Received: from aserp2130.oracle.com ([141.146.126.79]:60452 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727719AbgLADiy (ORCPT ); Mon, 30 Nov 2020 22:38:54 -0500 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 0B13TZrR065987 for ; Tue, 1 Dec 2020 03:38:13 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=2T4SLMEEbEI+3lmfYSVfs3KbG9LWCHN9ZKNPuneSdGc=; b=X3iJ8hf7mv7kj9tpIUilYILwXTTchi+kGNtQvfbdMCqJJ/O7QKOhRfIMBvhqn24Y7N2c RW4wiHYJNO1ExUoWVN2vPPoLB/DrSh9SZBoxyjLegPTnoI4Bjlr9DlTe4O4NyGW9m1ot O2W5Onmk70N35nMZPfu4sfZ91QQhnfg1tUM/88760DE5TbbzKO+XSQWCsKmR6ZjEZ4jn Zb4gdS4wVSrpiVCH3VSef5H937N3XUafvLkk7T5DrkELlyQOCXrdO7qKIQp7dcf8RzAD 75oCf7sPTzSj9cLcwpuup4BYRbo+CcVq5LNhjsCIS4uhtN9KD4aaFydqWiOyZ/TWlNFK 9w== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by aserp2130.oracle.com with ESMTP id 353c2arhm9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Tue, 01 Dec 2020 03:38:13 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 0B13VHb9071335 for ; Tue, 1 Dec 2020 03:38:12 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userp3030.oracle.com with ESMTP id 3540fw81qq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Tue, 01 Dec 2020 03:38:12 +0000 Received: from abhmp0008.oracle.com (abhmp0008.oracle.com [141.146.116.14]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 0B13cBFf005171 for ; Tue, 1 Dec 2020 03:38:11 GMT Received: from localhost (/67.169.218.210) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 30 Nov 2020 19:38:11 -0800 Subject: [PATCH 05/10] xfs: hoist recovered refcount intent checks out of xfs_cui_item_recover From: "Darrick J. Wong" To: darrick.wong@oracle.com Cc: linux-xfs@vger.kernel.org Date: Mon, 30 Nov 2020 19:38:10 -0800 Message-ID: <160679389048.447963.5353838196502010594.stgit@magnolia> In-Reply-To: <160679385987.447963.9630288535682256882.stgit@magnolia> References: <160679385987.447963.9630288535682256882.stgit@magnolia> User-Agent: StGit/0.19 MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9821 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 suspectscore=3 phishscore=0 mlxlogscore=999 adultscore=0 mlxscore=0 bulkscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012010023 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9821 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=3 lowpriorityscore=0 clxscore=1015 bulkscore=0 mlxlogscore=999 phishscore=0 malwarescore=0 spamscore=0 adultscore=0 mlxscore=0 priorityscore=1501 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012010023 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org From: Darrick J. Wong When we recover a refcount intent from the log, we need to validate its contents before we try to replay them. Hoist the checking code into a separate function in preparation to refactor this code to use validation helpers. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig --- fs/xfs/xfs_refcount_item.c | 58 +++++++++++++++++++++++++++----------------- 1 file changed, 35 insertions(+), 23 deletions(-) diff --git a/fs/xfs/xfs_refcount_item.c b/fs/xfs/xfs_refcount_item.c index 7529eb63ce94..de344bd7e73c 100644 --- a/fs/xfs/xfs_refcount_item.c +++ b/fs/xfs/xfs_refcount_item.c @@ -417,6 +417,38 @@ const struct xfs_defer_op_type xfs_refcount_update_defer_type = { .cancel_item = xfs_refcount_update_cancel_item, }; +/* Is this recovered CUI ok? */ +static inline bool +xfs_cui_validate_phys( + struct xfs_mount *mp, + struct xfs_phys_extent *refc) +{ + xfs_fsblock_t startblock_fsb; + bool op_ok; + + startblock_fsb = XFS_BB_TO_FSB(mp, + XFS_FSB_TO_DADDR(mp, refc->pe_startblock)); + switch (refc->pe_flags & XFS_REFCOUNT_EXTENT_TYPE_MASK) { + case XFS_REFCOUNT_INCREASE: + case XFS_REFCOUNT_DECREASE: + case XFS_REFCOUNT_ALLOC_COW: + case XFS_REFCOUNT_FREE_COW: + op_ok = true; + break; + default: + op_ok = false; + break; + } + if (!op_ok || startblock_fsb == 0 || + refc->pe_len == 0 || + startblock_fsb >= mp->m_sb.sb_dblocks || + refc->pe_len >= mp->m_sb.sb_agblocks || + (refc->pe_flags & ~XFS_REFCOUNT_EXTENT_FLAGS)) + return false; + + return true; +} + /* * Process a refcount update intent item that was recovered from the log. * We need to update the refcountbt. @@ -433,11 +465,9 @@ xfs_cui_item_recover( struct xfs_trans *tp; struct xfs_btree_cur *rcur = NULL; struct xfs_mount *mp = lip->li_mountp; - xfs_fsblock_t startblock_fsb; xfs_fsblock_t new_fsb; xfs_extlen_t new_len; unsigned int refc_type; - bool op_ok; bool requeue_only = false; enum xfs_refcount_intent_type type; int i; @@ -448,28 +478,10 @@ xfs_cui_item_recover( * CUI. If any are bad, then assume that all are bad and * just toss the CUI. */ - for (i = 0; i < cuip->cui_format.cui_nextents; i++) { - refc = &cuip->cui_format.cui_extents[i]; - startblock_fsb = XFS_BB_TO_FSB(mp, - XFS_FSB_TO_DADDR(mp, refc->pe_startblock)); - switch (refc->pe_flags & XFS_REFCOUNT_EXTENT_TYPE_MASK) { - case XFS_REFCOUNT_INCREASE: - case XFS_REFCOUNT_DECREASE: - case XFS_REFCOUNT_ALLOC_COW: - case XFS_REFCOUNT_FREE_COW: - op_ok = true; - break; - default: - op_ok = false; - break; - } - if (!op_ok || startblock_fsb == 0 || - refc->pe_len == 0 || - startblock_fsb >= mp->m_sb.sb_dblocks || - refc->pe_len >= mp->m_sb.sb_agblocks || - (refc->pe_flags & ~XFS_REFCOUNT_EXTENT_FLAGS)) + for (i = 0; i < cuip->cui_format.cui_nextents; i++) + if (!xfs_cui_validate_phys(mp, + &cuip->cui_format.cui_extents[i])) return -EFSCORRUPTED; - } /* * Under normal operation, refcount updates are deferred, so we