the problem was during go install github.com/ethereum/go-ethereum/cmd/geth@latest:
# github.com/shirou/gopsutil/mem
.go/pkg/mod/github.com/shirou/[email protected]+incompatible/mem/mem_openbsd.go:21:17: undefined: CTLVm
.go/pkg/mod/github.com/shirou/[email protected]+incompatible/mem/mem_openbsd.go:21:24: undefined: VmUvmexp
.go/pkg/mod/github.com/shirou/[email protected]+incompatible/mem/mem_openbsd.go:26:14: undefined: sizeOfUvmexp
.go/pkg/mod/github.com/shirou/[email protected]+incompatible/mem/mem_openbsd.go:29:13: undefined: Uvmexp
.go/pkg/mod/github.com/shirou/[email protected]+incompatible/mem/mem_openbsd.go:43:17: undefined: CTLVm