  We consider von Neumann algebras generated by the stationary laws of free
stochastic differential equations of the form $dX_t = dS_t -1/2 DV(X_t)$ for a
suitably convex multivariate noncommutative polynomial $V$. Using techniques of
Guionnet and Shlyakhtenko, we prove that these von Neumann algebras have
property AO of Ozawa and are thus solid.
