linux-ext4 - [PATCH] ext4: Fix incorrect offset

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Message-ID: <tencent_F992989953734FD5DE3F88ECB2191A856206@qq.com>
Date:   Thu, 24 Aug 2023 23:23:24 +0800
From:   Wang Jianjian <wangjianjian0@...mail.com>
To:     linux-ext4@...r.kernel.org
Cc:     Wang Jianjian <wangjianjian0@...mail.com>
Subject: [PATCH] ext4: Fix incorrect offset

The last argumen of ext4_check_dir_entry is dentry offset
int the file.

Signed-off-by: Wang Jianjian <wangjianjian0@...mail.com>
---
 fs/ext4/namei.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 94608b7df7e8..33ebd35025bf 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2261,8 +2261,7 @@ static int make_indexed_dir(handle_t *handle, struct ext4_filename *fname,
 	top = data2 + len;
 	while ((char *)(de2 = ext4_next_entry(de, blocksize)) < top) {
 		if (ext4_check_dir_entry(dir, NULL, de, bh2, data2, len,
-					 (data2 + (blocksize - csum_size) -
-					  (char *) de))) {
+					(char *)de - data2)) {
 			brelse(bh2);
 			brelse(bh);
 			return -EFSCORRUPTED;
-- 
2.34.3