UMEM_BUFCTL_AUDIT_SIZE_DEPTH
size = UMEM_BUFCTL_AUDIT_SIZE_DEPTH(umem_stack_depth);
ASSERT(UMEM_BUFCTL_AUDIT_SIZE_DEPTH(max_frames) <= max_size);
size = UMEM_BUFCTL_AUDIT_SIZE_DEPTH(umem_stack_depth);
UMEM_BUFCTL_AUDIT_SIZE_DEPTH(0)) / sizeof (uintptr_t))
UMEM_BUFCTL_AUDIT_SIZE_DEPTH(UMEM_STACK_DEPTH)