From patchwork Sat Jul 15 06:36:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Long Li X-Patchwork-Id: 13314395 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 98036EB64DC for ; Sat, 15 Jul 2023 06:39:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229904AbjGOGjv (ORCPT ); Sat, 15 Jul 2023 02:39:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229709AbjGOGjv (ORCPT ); Sat, 15 Jul 2023 02:39:51 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6752F358E for ; Fri, 14 Jul 2023 23:39:49 -0700 (PDT) Received: from kwepemi500009.china.huawei.com (unknown [172.30.72.56]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4R2zG52Ywnz18LhJ; Sat, 15 Jul 2023 14:39:09 +0800 (CST) Received: from localhost.localdomain (10.175.127.227) by kwepemi500009.china.huawei.com (7.221.188.199) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Sat, 15 Jul 2023 14:39:46 +0800 From: Long Li To: , CC: , , , , Subject: [PATCH v2 2/3] xfs: abort intent items when recovery intents fail Date: Sat, 15 Jul 2023 14:36:46 +0800 Message-ID: <20230715063647.2094989-3-leo.lilong@huawei.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230715063647.2094989-1-leo.lilong@huawei.com> References: <20230715063647.2094989-1-leo.lilong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.127.227] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemi500009.china.huawei.com (7.221.188.199) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org When recovering intents, we capture newly created intent items as part of committing recovered intent items. If intent recovery fails at a later point, we forget to remove those newly created intent items from the AIL and hang: [root@localhost ~]# cat /proc/539/stack [<0>] xfs_ail_push_all_sync+0x174/0x230 [<0>] xfs_unmount_flush_inodes+0x8d/0xd0 [<0>] xfs_mountfs+0x15f7/0x1e70 [<0>] xfs_fs_fill_super+0x10ec/0x1b20 [<0>] get_tree_bdev+0x3c8/0x730 [<0>] vfs_get_tree+0x89/0x2c0 [<0>] path_mount+0xecf/0x1800 [<0>] do_mount+0xf3/0x110 [<0>] __x64_sys_mount+0x154/0x1f0 [<0>] do_syscall_64+0x39/0x80 [<0>] entry_SYSCALL_64_after_hwframe+0x63/0xcd When newly created intent items fail to commit via transaction, intent recovery hasn't created done items for these newly created intent items, so the capture structure is the sole owner of the captured intent items. We must release them explicitly or else they leak: unreferenced object 0xffff888016719108 (size 432): comm "mount", pid 529, jiffies 4294706839 (age 144.463s) hex dump (first 32 bytes): 08 91 71 16 80 88 ff ff 08 91 71 16 80 88 ff ff ..q.......q..... 18 91 71 16 80 88 ff ff 18 91 71 16 80 88 ff ff ..q.......q..... backtrace: [] xfs_efi_init+0x18f/0x1d0 [] xfs_extent_free_create_intent+0x50/0x150 [] xfs_defer_create_intents+0x16a/0x340 [] xfs_defer_ops_capture_and_commit+0x8e/0xad0 [] xfs_cui_item_recover+0x819/0x980 [] xlog_recover_process_intents+0x246/0xb70 [] xlog_recover_finish+0x8a/0x9a0 [] xfs_log_mount_finish+0x2bb/0x4a0 [] xfs_mountfs+0x14bf/0x1e70 [] xfs_fs_fill_super+0x10d0/0x1b20 [] get_tree_bdev+0x3d2/0x6d0 [] vfs_get_tree+0x89/0x2c0 [] path_mount+0xecf/0x1800 [] do_mount+0xf3/0x110 [] __x64_sys_mount+0x154/0x1f0 [] do_syscall_64+0x39/0x80 Fix the problem above by abort intent items that don't have a done item when recovery intents fail. Fixes: e6fff81e4870 ("xfs: proper replay of deferred ops queued during log recovery") Signed-off-by: Long Li Reviewed-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_defer.c | 5 +++-- fs/xfs/libxfs/xfs_defer.h | 2 +- fs/xfs/xfs_log_recover.c | 2 +- 3 files changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/xfs/libxfs/xfs_defer.c b/fs/xfs/libxfs/xfs_defer.c index 88388e12f8e7..f71679ce23b9 100644 --- a/fs/xfs/libxfs/xfs_defer.c +++ b/fs/xfs/libxfs/xfs_defer.c @@ -763,12 +763,13 @@ xfs_defer_ops_capture( /* Release all resources that we used to capture deferred ops. */ void -xfs_defer_ops_capture_free( +xfs_defer_ops_capture_abort( struct xfs_mount *mp, struct xfs_defer_capture *dfc) { unsigned short i; + xfs_defer_pending_abort(mp, &dfc->dfc_dfops); xfs_defer_cancel_list(mp, &dfc->dfc_dfops); for (i = 0; i < dfc->dfc_held.dr_bufs; i++) @@ -809,7 +810,7 @@ xfs_defer_ops_capture_and_commit( /* Commit the transaction and add the capture structure to the list. */ error = xfs_trans_commit(tp); if (error) { - xfs_defer_ops_capture_free(mp, dfc); + xfs_defer_ops_capture_abort(mp, dfc); return error; } diff --git a/fs/xfs/libxfs/xfs_defer.h b/fs/xfs/libxfs/xfs_defer.h index 114a3a4930a3..8788ad5f6a73 100644 --- a/fs/xfs/libxfs/xfs_defer.h +++ b/fs/xfs/libxfs/xfs_defer.h @@ -121,7 +121,7 @@ int xfs_defer_ops_capture_and_commit(struct xfs_trans *tp, struct list_head *capture_list); void xfs_defer_ops_continue(struct xfs_defer_capture *d, struct xfs_trans *tp, struct xfs_defer_resources *dres); -void xfs_defer_ops_capture_free(struct xfs_mount *mp, +void xfs_defer_ops_capture_abort(struct xfs_mount *mp, struct xfs_defer_capture *d); void xfs_defer_resources_rele(struct xfs_defer_resources *dres); diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 82c81d20459d..fdaa0ffe029b 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -2511,7 +2511,7 @@ xlog_abort_defer_ops( list_for_each_entry_safe(dfc, next, capture_list, dfc_list) { list_del_init(&dfc->dfc_list); - xfs_defer_ops_capture_free(mp, dfc); + xfs_defer_ops_capture_abort(mp, dfc); } }