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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,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 CF8B8C2BA83 for ; Fri, 14 Feb 2020 17:04:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A419120656 for ; Fri, 14 Feb 2020 17:04:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581699862; bh=jGw6svsvk65XtHkjjP0d9Sk1MfluwD1qg4cuNwRDDaE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jAxdGQM1VS1hFWuYWhrtdhrPvHqlV/QwcqjosX6WnOrY8L3bq6Pa3bKw0xzsZVlEO 29IKtRm5w6zOIefYo/dx2BNG5ZYDo/9vGhVWRJdTGSrlHS9rGzOxddeEDIFPDGXgM4 fqvO6QiSXfLOFcizEa06X9BHXu27MujgdfPBsbJk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394475AbgBNREU (ORCPT ); Fri, 14 Feb 2020 12:04:20 -0500 Received: from mail.kernel.org ([198.145.29.99]:45872 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390387AbgBNQPe (ORCPT ); Fri, 14 Feb 2020 11:15:34 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5E7C3246D5; Fri, 14 Feb 2020 16:15:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581696933; bh=jGw6svsvk65XtHkjjP0d9Sk1MfluwD1qg4cuNwRDDaE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xhLBfC+4fdfFOpSh+9qZFc7zfOZgSJdesbkNkkDmtVWikTHcMofduHcD6MOL13ws/ dsYkTqEun3ijFyBA2/h2eR57Ot4u9RE+ShTGnF1s9553lsG0WDi6kRuS51J456TBpN Z7XfQvoDl5umTRyONE+obBQBdQxVxUgk95/1tArU= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jaegeuk Kim , Sasha Levin , linux-f2fs-devel@lists.sourceforge.net Subject: [PATCH AUTOSEL 4.19 178/252] f2fs: set I_LINKABLE early to avoid wrong access by vfs Date: Fri, 14 Feb 2020 11:10:33 -0500 Message-Id: <20200214161147.15842-178-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200214161147.15842-1-sashal@kernel.org> References: <20200214161147.15842-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jaegeuk Kim [ Upstream commit 5b1dbb082f196278f82b6a15a13848efacb9ff11 ] This patch moves setting I_LINKABLE early in rename2(whiteout) to avoid the below warning. [ 3189.163385] WARNING: CPU: 3 PID: 59523 at fs/inode.c:358 inc_nlink+0x32/0x40 [ 3189.246979] Call Trace: [ 3189.248707] f2fs_init_inode_metadata+0x2d6/0x440 [f2fs] [ 3189.251399] f2fs_add_inline_entry+0x162/0x8c0 [f2fs] [ 3189.254010] f2fs_add_dentry+0x69/0xe0 [f2fs] [ 3189.256353] f2fs_do_add_link+0xc5/0x100 [f2fs] [ 3189.258774] f2fs_rename2+0xabf/0x1010 [f2fs] [ 3189.261079] vfs_rename+0x3f8/0xaa0 [ 3189.263056] ? tomoyo_path_rename+0x44/0x60 [ 3189.265283] ? do_renameat2+0x49b/0x550 [ 3189.267324] do_renameat2+0x49b/0x550 [ 3189.269316] __x64_sys_renameat2+0x20/0x30 [ 3189.271441] do_syscall_64+0x5a/0x230 [ 3189.273410] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 3189.275848] RIP: 0033:0x7f270b4d9a49 Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/namei.c | 27 +++++++++++++-------------- 1 file changed, 13 insertions(+), 14 deletions(-) diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 0ace2c2e3de93..4f0cc0c79d1ee 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -769,6 +769,7 @@ static int __f2fs_tmpfile(struct inode *dir, struct dentry *dentry, if (whiteout) { f2fs_i_links_write(inode, false); + inode->i_state |= I_LINKABLE; *whiteout = inode; } else { d_tmpfile(dentry, inode); @@ -835,6 +836,12 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, F2FS_I(old_dentry->d_inode)->i_projid))) return -EXDEV; + if (flags & RENAME_WHITEOUT) { + err = f2fs_create_whiteout(old_dir, &whiteout); + if (err) + return err; + } + err = dquot_initialize(old_dir); if (err) goto out; @@ -865,17 +872,11 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, } } - if (flags & RENAME_WHITEOUT) { - err = f2fs_create_whiteout(old_dir, &whiteout); - if (err) - goto out_dir; - } - if (new_inode) { err = -ENOTEMPTY; if (old_dir_entry && !f2fs_empty_dir(new_inode)) - goto out_whiteout; + goto out_dir; err = -ENOENT; new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, @@ -883,7 +884,7 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, if (!new_entry) { if (IS_ERR(new_page)) err = PTR_ERR(new_page); - goto out_whiteout; + goto out_dir; } f2fs_balance_fs(sbi, true); @@ -915,7 +916,7 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, err = f2fs_add_link(new_dentry, old_inode); if (err) { f2fs_unlock_op(sbi); - goto out_whiteout; + goto out_dir; } if (old_dir_entry) @@ -939,7 +940,7 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, if (IS_ERR(old_page)) err = PTR_ERR(old_page); f2fs_unlock_op(sbi); - goto out_whiteout; + goto out_dir; } } } @@ -958,7 +959,6 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, f2fs_delete_entry(old_entry, old_page, old_dir, NULL); if (whiteout) { - whiteout->i_state |= I_LINKABLE; set_inode_flag(whiteout, FI_INC_LINK); err = f2fs_add_link(old_dentry, whiteout); if (err) @@ -992,15 +992,14 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, f2fs_unlock_op(sbi); if (new_page) f2fs_put_page(new_page, 0); -out_whiteout: - if (whiteout) - iput(whiteout); out_dir: if (old_dir_entry) f2fs_put_page(old_dir_page, 0); out_old: f2fs_put_page(old_page, 0); out: + if (whiteout) + iput(whiteout); return err; } -- 2.20.1