  Physical arguments related with the existence of black hole solutions having
a non trapping interior are discussed. Massive scalar fields interacting with
gravity are considered. Interior asymptotic solutions showing a scalar field
approaching a constant value at the horizon are given. It is argued that the
coupled Einstein-Klein-Gordon equations can be satisfied in the sense of the
generalized functions after removing a particular regularization designed for
matching the interior solution with an external Scwartzschild spacetime. The
scalar field appears as just avoiding the appearance of closed trapped surfaces
while coming from the exterior region. It also follows that the usual space
integral over the temporal- temporal components of energy-momnetum tensor in
the internal region just gives the total proper mass associated to the external
Schwartzschild solution, as it should be expected.
