From 1b13a7030504da9d379270675166342e7039817c Mon Sep 17 00:00:00 2001
From: Artem Chernyshev <artem.chernyshev@red-soft.ru>
Date: Mon, 9 Oct 2023 17:11:11 +0300
Subject: fs: ocfs2: check status values

Test return values before overwriting.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Link: https://lkml.kernel.org/r/20231009141111.149858-1-artem.chernyshev@red-soft.ru
Signed-off-by: Artem Chernyshev <artem.chernyshev@red-soft.ru>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 fs/ocfs2/namei.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'fs/ocfs2/namei.c')

diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 5cd6d7771cea..836c4279a979 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -1597,6 +1597,10 @@ static int ocfs2_rename(struct mnt_idmap *idmap,
 	if (update_dot_dot) {
 		status = ocfs2_update_entry(old_inode, handle,
 					    &old_inode_dot_dot_res, new_dir);
+		if (status < 0) {
+			mlog_errno(status);
+			goto bail;
+		}
 		drop_nlink(old_dir);
 		if (new_inode) {
 			drop_nlink(new_inode);
@@ -1636,6 +1640,10 @@ static int ocfs2_rename(struct mnt_idmap *idmap,
 							 INODE_CACHE(old_dir),
 							 old_dir_bh,
 							 OCFS2_JOURNAL_ACCESS_WRITE);
+			if (status < 0) {
+				mlog_errno(status);
+				goto bail;
+			}
 			fe = (struct ocfs2_dinode *) old_dir_bh->b_data;
 			ocfs2_set_links_count(fe, old_dir->i_nlink);
 			ocfs2_journal_dirty(handle, old_dir_bh);
-- 
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