diff options
| -rw-r--r-- | fs/ext3/namei.c | 6 | ||||
| -rw-r--r-- | fs/ext4/namei.c | 6 |
2 files changed, 12 insertions, 0 deletions
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c index 4df39c4315e1..57402b5f030c 100644 --- a/fs/ext3/namei.c +++ b/fs/ext3/namei.c @@ -2191,6 +2191,12 @@ static int ext3_link (struct dentry * old_dentry, if (inode->i_nlink >= EXT3_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 = ext3_journal_start(dir, EXT3_DATA_TRANS_BLOCKS(dir->i_sb) + diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index e5a74a5ac261..05c0d7f8fdf9 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) + |