diff --git a/pkg/rpctype/rpctype.go b/pkg/rpctype/rpctype.go
index 35aa75307328..f83eac3b3e17 100644
--- a/pkg/rpctype/rpctype.go
+++ b/pkg/rpctype/rpctype.go
@@ -11,21 +11,21 @@ import (
 	"github.com/google/syzkaller/pkg/signal"
 )
 
-type RPCInput struct {
+type Input struct {
 	Call   string
 	Prog   []byte
 	Signal signal.Serial
 	Cover  []uint32
 }
 
-type RPCCandidate struct {
+type Candidate struct {
 	Prog      []byte
 	Minimized bool
 	Smashed   bool
 }
 
-type RPCProg struct {
-	Prog    []byte
+type Prog struct {
+	Bytes   []byte
 	ProgIdx int
 	RunIdx  int
 }
@@ -63,7 +63,7 @@ type SyscallReason struct {
 
 type NewInputArgs struct {
 	Name string
-	RPCInput
+	Input
 }
 
 type PollArgs struct {
@@ -74,8 +74,8 @@ type PollArgs struct {
 }
 
 type PollRes struct {
-	Candidates []RPCCandidate
-	NewInputs  []RPCInput
+	Candidates []Candidate
+	NewInputs  []Input
 	MaxSignal  signal.Serial
 }
 
@@ -121,8 +121,8 @@ type NextExchangeArgs struct {
 // NextExchaneRes contains the data passed from server to client namely
 // programs  to execute on the VM.
 type NextExchangeRes struct {
-	// RPCProg contains the serialized program that will be sent to the client.
-	RPCProg
+	// Prog contains the serialized program that will be sent to the client.
+	Prog
 }
 
 type HubConnectArgs struct {
diff --git a/syz-fuzzer/fuzzer.go b/syz-fuzzer/fuzzer.go
index 6d723967ea4d..8e916f03464b 100644
--- a/syz-fuzzer/fuzzer.go
+++ b/syz-fuzzer/fuzzer.go
@@ -425,17 +425,17 @@ func (fuzzer *Fuzzer) poll(needCandidates bool, stats map[string]uint64) bool {
 	return len(r.NewInputs) != 0 || len(r.Candidates) != 0 || maxSignal.Len() != 0
 }
 
-func (fuzzer *Fuzzer) sendInputToManager(inp rpctype.RPCInput) {
+func (fuzzer *Fuzzer) sendInputToManager(inp rpctype.Input) {
 	a := &rpctype.NewInputArgs{
-		Name:     fuzzer.name,
-		RPCInput: inp,
+		Name:  fuzzer.name,
+		Input: inp,
 	}
 	if err := fuzzer.manager.Call("Manager.NewInput", a, nil); err != nil {
 		log.Fatalf("Manager.NewInput call failed: %v", err)
 	}
 }
 
-func (fuzzer *Fuzzer) addInputFromAnotherFuzzer(inp rpctype.RPCInput) {
+func (fuzzer *Fuzzer) addInputFromAnotherFuzzer(inp rpctype.Input) {
 	p := fuzzer.deserializeInput(inp.Prog)
 	if p == nil {
 		return
@@ -445,7 +445,7 @@ func (fuzzer *Fuzzer) addInputFromAnotherFuzzer(inp rpctype.RPCInput) {
 	fuzzer.addInputToCorpus(p, sign, sig)
 }
 
-func (fuzzer *Fuzzer) addCandidateInput(candidate rpctype.RPCCandidate) {
+func (fuzzer *Fuzzer) addCandidateInput(candidate rpctype.Candidate) {
 	p := fuzzer.deserializeInput(candidate.Prog)
 	if p == nil {
 		return
diff --git a/syz-fuzzer/proc.go b/syz-fuzzer/proc.go
index 96d10a7ecf54..b15560b6a86f 100644
--- a/syz-fuzzer/proc.go
+++ b/syz-fuzzer/proc.go
@@ -163,7 +163,7 @@ func (proc *Proc) triageInput(item *WorkTriage) {
 	sig := hash.Hash(data)
 
 	log.Logf(2, "added new input for %v to corpus:\n%s", logCallName, data)
-	proc.fuzzer.sendInputToManager(rpctype.RPCInput{
+	proc.fuzzer.sendInputToManager(rpctype.Input{
 		Call:   callName,
 		Prog:   data,
 		Signal: inputSignal.Serialize(),
diff --git a/syz-manager/hub.go b/syz-manager/hub.go
index 25c628580703..f077548029f8 100644
--- a/syz-manager/hub.go
+++ b/syz-manager/hub.go
@@ -72,7 +72,7 @@ type HubConnector struct {
 // HubManagerView restricts interface between HubConnector and Manager.
 type HubManagerView interface {
 	getMinimizedCorpus() (corpus, repros [][]byte)
-	addNewCandidates(candidates []rpctype.RPCCandidate)
+	addNewCandidates(candidates []rpctype.Candidate)
 }
 
 func (hc *HubConnector) loop() {
@@ -201,7 +201,7 @@ func (hc *HubConnector) sync(hub *rpctype.RPCClient, corpus [][]byte) error {
 }
 
 func (hc *HubConnector) processProgs(inputs []rpctype.HubInput) (minimized, smashed, dropped int) {
-	candidates := make([]rpctype.RPCCandidate, 0, len(inputs))
+	candidates := make([]rpctype.Candidate, 0, len(inputs))
 	for _, inp := range inputs {
 		bad, disabled := checkProgram(hc.target, hc.enabledCalls, inp.Prog)
 		if bad || disabled {
@@ -217,7 +217,7 @@ func (hc *HubConnector) processProgs(inputs []rpctype.HubInput) (minimized, smas
 		if smash {
 			smashed++
 		}
-		candidates = append(candidates, rpctype.RPCCandidate{
+		candidates = append(candidates, rpctype.Candidate{
 			Prog:      inp.Prog,
 			Minimized: min,
 			Smashed:   smash,
diff --git a/syz-manager/manager.go b/syz-manager/manager.go
index b07a885e2270..2a046810235a 100644
--- a/syz-manager/manager.go
+++ b/syz-manager/manager.go
@@ -70,9 +70,9 @@ type Manager struct {
 	phase                 int
 	targetEnabledSyscalls map[*prog.Syscall]bool
 
-	candidates       []rpctype.RPCCandidate // untriaged inputs from corpus and hub
+	candidates       []rpctype.Candidate // untriaged inputs from corpus and hub
 	disabledHashes   map[string]struct{}
-	corpus           map[string]rpctype.RPCInput
+	corpus           map[string]rpctype.Input
 	seeds            [][]byte
 	newRepros        [][]byte
 	lastMinCorpus    int
@@ -162,7 +162,7 @@ func RunManager(cfg *mgrconfig.Config) {
 		startTime:        time.Now(),
 		stats:            &Stats{haveHub: cfg.HubClient != ""},
 		crashTypes:       make(map[string]bool),
-		corpus:           make(map[string]rpctype.RPCInput),
+		corpus:           make(map[string]rpctype.Input),
 		disabledHashes:   make(map[string]struct{}),
 		memoryLeakFrames: make(map[string]bool),
 		dataRaceFrames:   make(map[string]bool),
@@ -534,7 +534,7 @@ func (mgr *Manager) loadProg(data []byte, minimized, smashed bool) bool {
 		mgr.disabledHashes[hash.String(data)] = struct{}{}
 		return true
 	}
-	mgr.candidates = append(mgr.candidates, rpctype.RPCCandidate{
+	mgr.candidates = append(mgr.candidates, rpctype.Candidate{
 		Prog:      data,
 		Minimized: minimized,
 		Smashed:   smashed,
@@ -948,7 +948,7 @@ func (mgr *Manager) getMinimizedCorpus() (corpus, repros [][]byte) {
 	return
 }
 
-func (mgr *Manager) addNewCandidates(candidates []rpctype.RPCCandidate) {
+func (mgr *Manager) addNewCandidates(candidates []rpctype.Candidate) {
 	mgr.mu.Lock()
 	defer mgr.mu.Unlock()
 	mgr.candidates = append(mgr.candidates, candidates...)
@@ -968,11 +968,11 @@ func (mgr *Manager) minimizeCorpus() {
 			Context: inp,
 		})
 	}
-	newCorpus := make(map[string]rpctype.RPCInput)
+	newCorpus := make(map[string]rpctype.Input)
 	// Note: inputs are unsorted (based on map iteration).
 	// This gives some intentional non-determinism during minimization.
 	for _, ctx := range signal.Minimize(inputs) {
-		inp := ctx.(rpctype.RPCInput)
+		inp := ctx.(rpctype.Input)
 		newCorpus[hash.String(inp.Prog)] = inp
 	}
 	log.Logf(1, "minimized corpus: %v -> %v", len(mgr.corpus), len(newCorpus))
@@ -1057,12 +1057,12 @@ func (mgr *Manager) collectSyscallInfoUnlocked() map[string]*CallCov {
 }
 
 func (mgr *Manager) fuzzerConnect(modules []host.KernelModule) (
-	[]rpctype.RPCInput, BugFrames, map[uint32]uint32, []byte, error) {
+	[]rpctype.Input, BugFrames, map[uint32]uint32, []byte, error) {
 	mgr.mu.Lock()
 	defer mgr.mu.Unlock()
 
 	mgr.minimizeCorpus()
-	corpus := make([]rpctype.RPCInput, 0, len(mgr.corpus))
+	corpus := make([]rpctype.Input, 0, len(mgr.corpus))
 	for _, inp := range mgr.corpus {
 		corpus = append(corpus, inp)
 	}
@@ -1098,7 +1098,7 @@ func (mgr *Manager) machineChecked(a *rpctype.CheckArgs, enabledSyscalls map[*pr
 	mgr.firstConnect = time.Now()
 }
 
-func (mgr *Manager) newInput(inp rpctype.RPCInput, sign signal.Signal) bool {
+func (mgr *Manager) newInput(inp rpctype.Input, sign signal.Signal) bool {
 	mgr.mu.Lock()
 	defer mgr.mu.Unlock()
 	if mgr.saturatedCalls[inp.Call] {
@@ -1124,14 +1124,14 @@ func (mgr *Manager) newInput(inp rpctype.RPCInput, sign signal.Signal) bool {
 	return true
 }
 
-func (mgr *Manager) candidateBatch(size int) []rpctype.RPCCandidate {
+func (mgr *Manager) candidateBatch(size int) []rpctype.Candidate {
 	mgr.mu.Lock()
 	defer mgr.mu.Unlock()
-	var res []rpctype.RPCCandidate
+	var res []rpctype.Candidate
 	for i := 0; i < size && len(mgr.candidates) > 0; i++ {
 		last := len(mgr.candidates) - 1
 		res = append(res, mgr.candidates[last])
-		mgr.candidates[last] = rpctype.RPCCandidate{}
+		mgr.candidates[last] = rpctype.Candidate{}
 		mgr.candidates = mgr.candidates[:last]
 	}
 	if len(mgr.candidates) == 0 {
diff --git a/syz-manager/rpc.go b/syz-manager/rpc.go
index d091bd01a339..8f9eb98b83fe 100644
--- a/syz-manager/rpc.go
+++ b/syz-manager/rpc.go
@@ -43,7 +43,7 @@ type RPCServer struct {
 type Fuzzer struct {
 	name          string
 	rotated       bool
-	inputs        []rpctype.RPCInput
+	inputs        []rpctype.Input
 	newMaxSignal  signal.Signal
 	rotatedSignal signal.Signal
 	machineInfo   []byte
@@ -57,10 +57,10 @@ type BugFrames struct {
 // RPCManagerView restricts interface between RPCServer and Manager.
 type RPCManagerView interface {
 	fuzzerConnect([]host.KernelModule) (
-		[]rpctype.RPCInput, BugFrames, map[uint32]uint32, []byte, error)
+		[]rpctype.Input, BugFrames, map[uint32]uint32, []byte, error)
 	machineChecked(result *rpctype.CheckArgs, enabledSyscalls map[*prog.Syscall]bool)
-	newInput(inp rpctype.RPCInput, sign signal.Signal) bool
-	candidateBatch(size int) []rpctype.RPCCandidate
+	newInput(inp rpctype.Input, sign signal.Signal) bool
+	candidateBatch(size int) []rpctype.Candidate
 	rotateCorpus() bool
 }
 
@@ -125,7 +125,7 @@ func (serv *RPCServer) Connect(a *rpctype.ConnectArgs, r *rpctype.ConnectRes) er
 	return nil
 }
 
-func (serv *RPCServer) rotateCorpus(f *Fuzzer, corpus []rpctype.RPCInput) *rpctype.CheckArgs {
+func (serv *RPCServer) rotateCorpus(f *Fuzzer, corpus []rpctype.Input) *rpctype.CheckArgs {
 	// Fuzzing tends to stuck in some local optimum and then it fails to cover
 	// other state space points since code coverage is only a very approximate
 	// measure of logic coverage. To overcome this we introduce some variation
@@ -174,8 +174,8 @@ func (serv *RPCServer) rotateCorpus(f *Fuzzer, corpus []rpctype.RPCInput) *rpcty
 	return &result
 }
 
-func (serv *RPCServer) selectInputs(enabled map[string]bool, inputs0 []rpctype.RPCInput, signal0 signal.Signal) (
-	inputs []rpctype.RPCInput, signal signal.Signal) {
+func (serv *RPCServer) selectInputs(enabled map[string]bool, inputs0 []rpctype.Input, signal0 signal.Signal) (
+	inputs []rpctype.Input, signal signal.Signal) {
 	signal = signal0.Copy()
 	for _, inp := range inputs0 {
 		calls, _, err := prog.CallSet(inp.Prog)
@@ -250,9 +250,9 @@ func (serv *RPCServer) NewInput(a *rpctype.NewInputArgs, r *int) error {
 	inputSignal := a.Signal.Deserialize()
 	log.Logf(4, "new input from %v for syscall %v (signal=%v, cover=%v)",
 		a.Name, a.Call, inputSignal.Len(), len(a.Cover))
-	bad, disabled := checkProgram(serv.cfg.Target, serv.targetEnabledSyscalls, a.RPCInput.Prog)
+	bad, disabled := checkProgram(serv.cfg.Target, serv.targetEnabledSyscalls, a.Input.Prog)
 	if bad || disabled {
-		log.Logf(0, "rejecting program from fuzzer (bad=%v, disabled=%v):\n%s", bad, disabled, a.RPCInput.Prog)
+		log.Logf(0, "rejecting program from fuzzer (bad=%v, disabled=%v):\n%s", bad, disabled, a.Input.Prog)
 		return nil
 	}
 	serv.mu.Lock()
@@ -269,7 +269,7 @@ func (serv *RPCServer) NewInput(a *rpctype.NewInputArgs, r *int) error {
 	if !genuine && !rotated {
 		return nil
 	}
-	if !serv.mgr.newInput(a.RPCInput, inputSignal) {
+	if !serv.mgr.newInput(a.Input, inputSignal) {
 		return nil
 	}
 
@@ -301,12 +301,12 @@ func (serv *RPCServer) NewInput(a *rpctype.NewInputArgs, r *int) error {
 		serv.corpusSignal.Merge(inputSignal)
 		serv.stats.corpusSignal.set(serv.corpusSignal.Len())
 
-		a.RPCInput.Cover = nil // Don't send coverage back to all fuzzers.
+		a.Input.Cover = nil // Don't send coverage back to all fuzzers.
 		for _, other := range serv.fuzzers {
 			if other == f || other.rotated {
 				continue
 			}
-			other.inputs = append(other.inputs, a.RPCInput)
+			other.inputs = append(other.inputs, a.Input)
 		}
 	}
 	return nil
@@ -357,7 +357,7 @@ func (serv *RPCServer) Poll(a *rpctype.PollArgs, r *rpctype.PollRes) error {
 		for i := 0; i < batchSize && len(f.inputs) > 0; i++ {
 			last := len(f.inputs) - 1
 			r.NewInputs = append(r.NewInputs, f.inputs[last])
-			f.inputs[last] = rpctype.RPCInput{}
+			f.inputs[last] = rpctype.Input{}
 			f.inputs = f.inputs[:last]
 		}
 		if len(f.inputs) == 0 {
diff --git a/syz-runner/runner.go b/syz-runner/runner.go
index 26bdb26694e5..9317055d4797 100644
--- a/syz-runner/runner.go
+++ b/syz-runner/runner.go
@@ -93,7 +93,7 @@ func main() {
 		log.Fatalf("failed to get initial program: %v", err)
 	}
 
-	rn.Run(res.Prog, res.ProgIdx, res.RunIdx)
+	rn.Run(res.Prog.Bytes, res.ProgIdx, res.RunIdx)
 }
 
 // Run is responsible for requesting new programs from the verifier, executing them and then sending back the Result.
@@ -131,7 +131,7 @@ func (rn *Runner) Run(firstProg []byte, idx, runIdx int) {
 		if err := rn.vrf.Call("Verifier.NextExchange", a, r); err != nil {
 			log.Fatalf("failed to make exchange with verifier: %v", err)
 		}
-		p, pIdx, rIdx = r.Prog, r.ProgIdx, r.RunIdx
+		p, pIdx, rIdx = r.Prog.Bytes, r.ProgIdx, r.RunIdx
 
 		if !rn.newEnv {
 			continue
diff --git a/syz-verifier/rpcserver.go b/syz-verifier/rpcserver.go
index 8757b22cc670..e392e1c9e295 100644
--- a/syz-verifier/rpcserver.go
+++ b/syz-verifier/rpcserver.go
@@ -137,7 +137,7 @@ func (srv *RPCServer) NextExchange(a *rpctype.NextExchangeArgs, r *rpctype.NextE
 	}
 
 	newProg, pi, ri := srv.newProgram(a.Pool, a.VM)
-	r.RPCProg = rpctype.RPCProg{Prog: newProg, ProgIdx: pi, RunIdx: ri}
+	r.Prog = rpctype.Prog{Bytes: newProg, ProgIdx: pi, RunIdx: ri}
 	return nil
 }