Rolling Stones's oracle text reads:
Wall creatures can attack as though they didn't have defender.
Tree of Redemption's oracle text reads:
Creature - Plant
: Exchange your life total with Tree of Redemption's toughness.
Which that one actually matches the card. As Tree of Redemption is not a wall, Rolling Stones does not effect it. Also note that Tree of Redemption has 0 power, so it attacking usually wouldn't do anything. Warmonger's Chariot would both allow it to attack and deal some amount of damage.