block: Don't access request after it might be freed

[pandora-kernel.git] / fs / ext4 / namei.c

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index aa4c782..88f97e5 100644 (file)
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1037,6 +1037,12 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, stru
                        EXT4_ERROR_INODE(dir, "bad inode number: %u", ino);
                        return ERR_PTR(-EIO);
                }
+               if (unlikely(ino == dir->i_ino)) {
+                       EXT4_ERROR_INODE(dir, "'%.*s' linked to parent dir",
+                                        dentry->d_name.len,
+                                        dentry->d_name.name);
+                       return ERR_PTR(-EIO);
+               }
                inode = ext4_iget(dir->i_sb, ino);
                if (inode == ERR_PTR(-ESTALE)) {
                        EXT4_ERROR_INODE(dir,
@@ -1795,9 +1801,7 @@ retry:
        err = PTR_ERR(inode);
        if (!IS_ERR(inode)) {
                init_special_inode(inode, inode->i_mode, rdev);
-#ifdef CONFIG_EXT4_FS_XATTR
                inode->i_op = &ext4_special_inode_operations;
-#endif
                err = ext4_add_nondir(handle, dentry, inode);
        }
        ext4_journal_stop(handle);