[PATCH 2/2] nilfs: check new inode's nlink when rename

When rename, if new inode exists, then its nlink must not be zero.

Signed-off-by: Wang Jianjian <[email protected]>
---
 fs/nilfs2/namei.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index e2fe95de3d71..db171789a316 100644
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -397,6 +397,11 @@ static int nilfs_rename(struct mnt_idmap *idmap,
 		struct folio *new_folio;
 		struct nilfs_dir_entry *new_de;
 
+		if (new_inode->i_nlink == 0) {
+			err = -EFSCORRUPTED;
+			goto out_dir;
+		}
+
 		err = -ENOTEMPTY;
 		if (old_is_dir && !nilfs_empty_dir(new_inode))
 			goto out_dir;
-- 
2.34.1