This one was due to a merge error: we added a use of nd.path in commit
2d7c820e56ce83b23daee9eb5343730fb309418e ("ext3: add checks for errors
from jbd"), and concurrently we got rid of 'nd' and used a naked 'path'
in commit 
8264613def2e5c4f12bc3167713090fd172e6055 ("[PATCH] switch
quota_on-related stuff to kern_path()").
That all merged cleanly, but it didn't actually _work_.  This should fix
it.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
                err = journal_flush(EXT3_SB(sb)->s_journal);
                journal_unlock_updates(EXT3_SB(sb)->s_journal);
                if (err) {
-                       path_put(&nd.path);
+                       path_put(&path);
                        return err;
                }
        }