TDP_EXECVMSPC
KASSERT((td->td_pflags & TDP_EXECVMSPC) == 0,
if ((td->td_pflags & TDP_EXECVMSPC) != 0) {
td->td_pflags &= ~TDP_EXECVMSPC;
KASSERT(error != 0 || (td->td_pflags & TDP_EXECVMSPC) == 0,
KASSERT((curthread->td_pflags & TDP_EXECVMSPC) == 0,
curthread->td_pflags |= TDP_EXECVMSPC;