(Portland, OR)  --  A Portland man is recovering from injuries after being stabbed near the Springwater Corridor Trail.  Police say the man was walking near Southeast 21st Avenue and Southeast Marion Street Monday when 39-year-old Roger Yates attacked and stabbed him.  The man suffered a deep wound to the arm and needed stitches.  Yates lives on the corridor and allegedly told investigators he was high on drugs when he attacked the man.