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-rw-r--r--fs/ext4/namei.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index e5a74a5ac26..05c0d7f8fdf 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2189,6 +2189,12 @@ static int ext4_link (struct dentry * old_dentry,
if (inode->i_nlink >= EXT4_LINK_MAX)
return -EMLINK;
+ /*
+ * Return -ENOENT if we've raced with unlink and i_nlink is 0. Doing
+ * otherwise has the potential to corrupt the orphan inode list.
+ */
+ if (inode->i_nlink == 0)
+ return -ENOENT;
retry:
handle = ext4_journal_start(dir, EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +