On Wed, Dec 25, 2019 at 03:23:53PM +0800, Frank Huang wrote: > hi leon > > I can not get what you means, do you say the rxe_add_ref(qp) is not needed? It is not what I'm saying. The use of rxe_add_ref(qp) assumes that QP can't disappear while it is called. From what I see in the code, rxe_responder() doesn't guarantee that. Thanks