How to use minimizeCorpus method of main Package

Best Syzkaller code snippet using main.minimizeCorpus

manager.go

Source:manager.go

...227				if mgr.firstConnect.IsZero() {228					mgr.mu.Unlock()229					continue230				}231				mgr.minimizeCorpus()232				vals["corpus"] = uint64(len(mgr.corpus))233				vals["uptime"] = uint64(time.Since(mgr.firstConnect)) / 1e9234				vals["fuzzing"] = uint64(mgr.fuzzingTime) / 1e9235				vals["signal"] = uint64(len(mgr.corpusSignal))236				vals["coverage"] = uint64(len(mgr.corpusCover))237				for k, v := range mgr.stats {238					vals[k] = v239				}240				mgr.mu.Unlock()241				data, err := json.MarshalIndent(vals, "", "  ")242				if err != nil {243					Fatalf("failed to serialize bench data")244				}245				if _, err := f.Write(append(data, '\n')); err != nil {246					Fatalf("failed to write bench data")247				}248			}249		}()250	}251	if mgr.cfg.Hub_Addr != "" {252		go func() {253			for {254				time.Sleep(time.Minute)255				mgr.hubSync()256			}257		}()258	}259	go func() {260		c := make(chan os.Signal, 2)261		signal.Notify(c, syscall.SIGINT)262		<-c263		close(vm.Shutdown)264		Logf(0, "shutting down...")265		<-c266		Fatalf("terminating")267	}()268	mgr.vmLoop()269}270type RunResult struct {271	idx   int272	crash *Crash273	err   error274}275type ReproResult struct {276	instances []int277	crash     *Crash278	res       *repro.Result279	err       error280}281func (mgr *Manager) vmLoop() {282	Logf(0, "booting test machines...")283	reproInstances := 4284	if reproInstances > mgr.cfg.Count {285		reproInstances = mgr.cfg.Count286	}287	instances := make([]int, mgr.cfg.Count)288	for i := range instances {289		instances[i] = mgr.cfg.Count - i - 1290	}291	runDone := make(chan *RunResult, 1)292	pendingRepro := make(map[*Crash]bool)293	reproducing := make(map[string]bool)294	var reproQueue []*Crash295	reproDone := make(chan *ReproResult, 1)296	stopPending := false297	shutdown := vm.Shutdown298	for {299		for crash := range pendingRepro {300			if reproducing[crash.desc] {301				continue302			}303			delete(pendingRepro, crash)304			if !mgr.needRepro(crash.desc) {305				continue306			}307			Logf(1, "loop: add to repro queue '%v'", crash.desc)308			reproducing[crash.desc] = true309			reproQueue = append(reproQueue, crash)310		}311		Logf(1, "loop: shutdown=%v instances=%v/%v %+v repro: pending=%v reproducing=%v queued=%v",312			shutdown == nil, len(instances), mgr.cfg.Count, instances,313			len(pendingRepro), len(reproducing), len(reproQueue))314		if shutdown == nil {315			if len(instances) == mgr.cfg.Count {316				return317			}318		} else {319			for len(reproQueue) != 0 && len(instances) >= reproInstances {320				last := len(reproQueue) - 1321				crash := reproQueue[last]322				reproQueue[last] = nil323				reproQueue = reproQueue[:last]324				vmIndexes := append([]int{}, instances[len(instances)-reproInstances:]...)325				instances = instances[:len(instances)-reproInstances]326				Logf(1, "loop: starting repro of '%v' on instances %+v", crash.desc, vmIndexes)327				go func() {328					res, err := repro.Run(crash.output, mgr.cfg, vmIndexes)329					reproDone <- &ReproResult{vmIndexes, crash, res, err}330				}()331			}332			for len(reproQueue) == 0 && len(instances) != 0 {333				last := len(instances) - 1334				idx := instances[last]335				instances = instances[:last]336				Logf(1, "loop: starting instance %v", idx)337				go func() {338					vmCfg, err := config.CreateVMConfig(mgr.cfg, idx)339					if err != nil {340						Fatalf("failed to create VM config: %v", err)341					}342					crash, err := mgr.runInstance(vmCfg, idx == 0)343					runDone <- &RunResult{idx, crash, err}344				}()345			}346		}347		var stopRequest chan bool348		if len(reproQueue) != 0 && !stopPending {349			stopRequest = mgr.vmStop350		}351		select {352		case stopRequest <- true:353			Logf(1, "loop: issued stop request")354			stopPending = true355		case res := <-runDone:356			Logf(1, "loop: instance %v finished, crash=%v", res.idx, res.crash != nil)357			if res.err != nil && shutdown != nil {358				Logf(0, "%v", res.err)359			}360			stopPending = false361			instances = append(instances, res.idx)362			// On shutdown qemu crashes with "qemu: terminating on signal 2",363			// which we detect as "lost connection". Don't save that as crash.364			if shutdown != nil && res.crash != nil && !mgr.isSuppressed(res.crash) {365				mgr.saveCrash(res.crash)366				if mgr.needRepro(res.crash.desc) {367					Logf(1, "loop: add pending repro for '%v'", res.crash.desc)368					pendingRepro[res.crash] = true369				}370			}371		case res := <-reproDone:372			crepro := false373			if res.res != nil {374				crepro = res.res.CRepro375			}376			Logf(1, "loop: repro on instances %+v finished '%v', repro=%v crepro=%v",377				res.instances, res.crash.desc, res.res != nil, crepro)378			if res.err != nil {379				Logf(0, "repro failed: %v", res.err)380			}381			delete(reproducing, res.crash.desc)382			instances = append(instances, res.instances...)383			mgr.saveRepro(res.crash, res.res)384		case <-shutdown:385			Logf(1, "loop: shutting down...")386			shutdown = nil387		}388	}389}390func (mgr *Manager) runInstance(vmCfg *vm.Config, first bool) (*Crash, error) {391	inst, err := vm.Create(mgr.cfg.Type, vmCfg)392	if err != nil {393		return nil, fmt.Errorf("failed to create instance: %v", err)394	}395	defer inst.Close()396	fwdAddr, err := inst.Forward(mgr.port)397	if err != nil {398		return nil, fmt.Errorf("failed to setup port forwarding: %v", err)399	}400	fuzzerBin, err := inst.Copy(filepath.Join(mgr.cfg.Syzkaller, "bin", "syz-fuzzer"))401	if err != nil {402		return nil, fmt.Errorf("failed to copy binary: %v", err)403	}404	executorBin, err := inst.Copy(filepath.Join(mgr.cfg.Syzkaller, "bin", "syz-executor"))405	if err != nil {406		return nil, fmt.Errorf("failed to copy binary: %v", err)407	}408	// Leak detection significantly slows down fuzzing, so detect leaks only on the first instance.409	leak := first && mgr.cfg.Leak410	fuzzerV := 0411	procs := mgr.cfg.Procs412	if *flagDebug {413		fuzzerV = 100414		procs = 1415	}416	// Run the fuzzer binary.417	start := time.Now()418	atomic.AddUint32(&mgr.numFuzzing, 1)419	defer atomic.AddUint32(&mgr.numFuzzing, ^uint32(0))420	cmd := fmt.Sprintf("%v -executor=%v -name=%v -manager=%v -output=%v -procs=%v -leak=%v -cover=%v -sandbox=%v -debug=%v -v=%d",421		fuzzerBin, executorBin, vmCfg.Name, fwdAddr, mgr.cfg.Output, procs, leak, mgr.cfg.Cover, mgr.cfg.Sandbox, *flagDebug, fuzzerV)422	outc, errc, err := inst.Run(time.Hour, mgr.vmStop, cmd)423	if err != nil {424		return nil, fmt.Errorf("failed to run fuzzer: %v", err)425	}426	desc, text, output, crashed, timedout := vm.MonitorExecution(outc, errc, mgr.cfg.Type == "local", true, mgr.cfg.ParsedIgnores)427	if timedout {428		// This is the only "OK" outcome.429		Logf(0, "%v: running for %v, restarting (%v)", vmCfg.Name, time.Since(start), desc)430		return nil, nil431	}432	if !crashed {433		// syz-fuzzer exited, but it should not.434		desc = "lost connection to test machine"435	}436	return &Crash{vmCfg.Name, desc, text, output}, nil437}438func (mgr *Manager) isSuppressed(crash *Crash) bool {439	for _, re := range mgr.cfg.ParsedSuppressions {440		if !re.Match(crash.output) {441			continue442		}443		Logf(1, "%v: suppressing '%v' with '%v'", crash.vmName, crash.desc, re.String())444		mgr.mu.Lock()445		mgr.stats["suppressed"]++446		mgr.mu.Unlock()447		return true448	}449	return false450}451func (mgr *Manager) saveCrash(crash *Crash) {452	Logf(0, "%v: crash: %v", crash.vmName, crash.desc)453	mgr.mu.Lock()454	mgr.stats["crashes"]++455	if !mgr.crashTypes[crash.desc] {456		mgr.crashTypes[crash.desc] = true457		mgr.stats["crash types"]++458	}459	mgr.mu.Unlock()460	sig := hash.Hash([]byte(crash.desc))461	id := sig.String()462	dir := filepath.Join(mgr.crashdir, id)463	os.MkdirAll(dir, 0700)464	if err := ioutil.WriteFile(filepath.Join(dir, "description"), []byte(crash.desc+"\n"), 0660); err != nil {465		Logf(0, "failed to write crash: %v", err)466	}467	// Save up to 100 reports. If we already have 100, overwrite the oldest one.468	// Newer reports are generally more useful. Overwriting is also needed469	// to be able to understand if a particular bug still happens or already fixed.470	oldestI := 0471	var oldestTime time.Time472	for i := 0; i < 100; i++ {473		info, err := os.Stat(filepath.Join(dir, fmt.Sprintf("log%v", i)))474		if err != nil {475			oldestI = i476			break477		}478		if oldestTime.IsZero() || info.ModTime().Before(oldestTime) {479			oldestI = i480			oldestTime = info.ModTime()481		}482	}483	ioutil.WriteFile(filepath.Join(dir, fmt.Sprintf("log%v", oldestI)), crash.output, 0660)484	if len(mgr.cfg.Tag) > 0 {485		ioutil.WriteFile(filepath.Join(dir, fmt.Sprintf("tag%v", oldestI)), []byte(mgr.cfg.Tag), 0660)486	}487	if len(crash.text) > 0 {488		symbolized, err := report.Symbolize(mgr.cfg.Vmlinux, crash.text)489		if err != nil {490			Logf(0, "failed to symbolize crash: %v", err)491		} else {492			crash.text = symbolized493		}494		ioutil.WriteFile(filepath.Join(dir, fmt.Sprintf("report%v", oldestI)), crash.text, 0660)495	}496	if mgr.dash != nil {497		dc := &dashboard.Crash{498			Tag:    mgr.cfg.Tag,499			Desc:   crash.desc,500			Log:    crash.output,501			Report: crash.text,502		}503		if err := mgr.dash.ReportCrash(dc); err != nil {504			Logf(0, "failed to report crash to dashboard: %v", err)505		}506	}507}508const maxReproAttempts = 3509func (mgr *Manager) needRepro(desc string) bool {510	if !mgr.cfg.Reproduce {511		return false512	}513	sig := hash.Hash([]byte(desc))514	dir := filepath.Join(mgr.crashdir, sig.String())515	if _, err := os.Stat(filepath.Join(dir, "repro.prog")); err == nil {516		return false517	}518	for i := 0; i < maxReproAttempts; i++ {519		if _, err := os.Stat(filepath.Join(dir, fmt.Sprintf("repro%v", i))); err != nil {520			return true521		}522	}523	return false524}525func (mgr *Manager) saveRepro(crash *Crash, res *repro.Result) {526	sig := hash.Hash([]byte(crash.desc))527	dir := filepath.Join(mgr.crashdir, sig.String())528	if res == nil {529		if mgr.dash != nil {530			dr := &dashboard.Repro{531				Crash: dashboard.Crash{532					Tag:  mgr.cfg.Tag,533					Desc: crash.desc,534				},535				Reproduced: false,536			}537			if err := mgr.dash.ReportRepro(dr); err != nil {538				Logf(0, "failed to report repro to dashboard: %v", err)539			}540		}541		for i := 0; i < maxReproAttempts; i++ {542			name := filepath.Join(dir, fmt.Sprintf("repro%v", i))543			if _, err := os.Stat(name); err != nil {544				ioutil.WriteFile(name, nil, 0660)545				break546			}547		}548		return549	}550	opts := fmt.Sprintf("# %+v\n", res.Opts)551	prog := res.Prog.Serialize()552	ioutil.WriteFile(filepath.Join(dir, "repro.prog"), append([]byte(opts), prog...), 0660)553	if len(mgr.cfg.Tag) > 0 {554		ioutil.WriteFile(filepath.Join(dir, "repro.tag"), []byte(mgr.cfg.Tag), 0660)555	}556	if len(crash.text) > 0 {557		ioutil.WriteFile(filepath.Join(dir, "repro.report"), []byte(crash.text), 0660)558	}559	var cprogText []byte560	if res.CRepro {561		cprog, err := csource.Write(res.Prog, res.Opts)562		if err == nil {563			formatted, err := csource.Format(cprog)564			if err == nil {565				cprog = formatted566			}567			ioutil.WriteFile(filepath.Join(dir, "repro.cprog"), cprog, 0660)568			cprogText = cprog569		} else {570			Logf(0, "failed to write C source: %v", err)571		}572	}573	if mgr.dash != nil {574		dr := &dashboard.Repro{575			Crash: dashboard.Crash{576				Tag:    mgr.cfg.Tag,577				Desc:   crash.desc,578				Report: crash.text,579			},580			Reproduced: true,581			Opts:       fmt.Sprintf("%+v", res.Opts),582			Prog:       res.Prog.Serialize(),583			CProg:      cprogText,584		}585		if err := mgr.dash.ReportRepro(dr); err != nil {586			Logf(0, "failed to report repro to dashboard: %v", err)587		}588	}589}590func (mgr *Manager) minimizeCorpus() {591	if mgr.cfg.Cover && len(mgr.corpus) != 0 {592		var cov []cover.Cover593		var inputs []RpcInput594		for _, inp := range mgr.corpus {595			cov = append(cov, inp.Signal)596			inputs = append(inputs, inp)597		}598		newCorpus := make(map[string]RpcInput)599		for _, idx := range cover.Minimize(cov) {600			inp := inputs[idx]601			newCorpus[hash.String(inp.Prog)] = inp602		}603		Logf(1, "minimized corpus: %v -> %v", len(mgr.corpus), len(newCorpus))604		mgr.corpus = newCorpus605	}606	// Don't minimize persistent corpus until fuzzers have triaged all inputs from it.607	if len(mgr.candidates) == 0 {608		for key := range mgr.corpusDB.Records {609			_, ok1 := mgr.corpus[key]610			_, ok2 := mgr.disabledHashes[key]611			if !ok1 && !ok2 {612				mgr.corpusDB.Delete(key)613			}614		}615		mgr.corpusDB.Flush()616	}617}618func (mgr *Manager) Connect(a *ConnectArgs, r *ConnectRes) error {619	Logf(1, "fuzzer %v connected", a.Name)620	mgr.mu.Lock()621	defer mgr.mu.Unlock()622	if mgr.firstConnect.IsZero() {623		mgr.firstConnect = time.Now()624	}625	mgr.stats["vm restarts"]++626	f := &Fuzzer{627		name: a.Name,628	}629	mgr.fuzzers[a.Name] = f630	mgr.minimizeCorpus()631	if mgr.prios == nil || time.Since(mgr.lastPrioCalc) > 30*time.Minute {632		// Deserializing all programs is slow, so we do it episodically and without holding the mutex.633		mgr.lastPrioCalc = time.Now()634		inputs := make([][]byte, 0, len(mgr.corpus))635		for _, inp := range mgr.corpus {636			inputs = append(inputs, inp.Prog)637		}638		mgr.mu.Unlock()639		corpus := make([]*prog.Prog, 0, len(inputs))640		for _, inp := range inputs {641			p, err := prog.Deserialize(inp)642			if err != nil {643				panic(err)644			}645			corpus = append(corpus, p)646		}647		prios := prog.CalculatePriorities(corpus, mgr.cfg.Weight_Syscalls, mgr.cfg.Weight)648		// fmt.Println("Prios below:")649		// fmt.Printf("%+v\n", prios)		650		Logf(0, "Prios Calculated")651		mgr.mu.Lock()652		mgr.prios = prios653	}654	f.inputs = nil655	for _, inp := range mgr.corpus {656		r.Inputs = append(r.Inputs, inp)657	}658	r.Prios = mgr.prios659	r.EnabledCalls = mgr.enabledSyscalls660	r.NeedCheck = !mgr.vmChecked661	r.MaxSignal = make([]uint32, 0, len(mgr.maxSignal))662	for s := range mgr.maxSignal {663		r.MaxSignal = append(r.MaxSignal, s)664	}665	f.newMaxSignal = nil666	for i := 0; i < mgr.cfg.Procs && len(mgr.candidates) > 0; i++ {667		last := len(mgr.candidates) - 1668		r.Candidates = append(r.Candidates, mgr.candidates[last])669		mgr.candidates = mgr.candidates[:last]670	}671	if len(mgr.candidates) == 0 {672		mgr.candidates = nil673	}674	return nil675}676func (mgr *Manager) Check(a *CheckArgs, r *int) error {677	mgr.mu.Lock()678	defer mgr.mu.Unlock()679	if mgr.vmChecked {680		return nil681	}682	Logf(1, "fuzzer %v vm check: %v calls enabled", a.Name, len(a.Calls))683	if len(a.Calls) == 0 {684		Fatalf("no system calls enabled")685	}686	if mgr.cfg.Cover && !a.Kcov {687		Fatalf("/sys/kernel/debug/kcov is missing. Enable CONFIG_KCOV and mount debugfs")688	}689	mgr.vmChecked = true690	mgr.enabledCalls = a.Calls691	return nil692}693func (mgr *Manager) NewInput(a *NewInputArgs, r *int) error {694	Logf(2, "new input from %v for syscall %v (signal=%v cover=%v)", a.Name, a.Call, len(a.Signal), len(a.Cover))695	mgr.mu.Lock()696	defer mgr.mu.Unlock()697	f := mgr.fuzzers[a.Name]698	if f == nil {699		Fatalf("fuzzer %v is not connected", a.Name)700	}701	if !cover.SignalNew(mgr.corpusSignal, a.Signal) {702		return nil703	}704	mgr.stats["manager new inputs"]++705	cover.SignalAdd(mgr.corpusSignal, a.Signal)706	cover.SignalAdd(mgr.corpusCover, a.Cover)707	sig := hash.String(a.RpcInput.Prog)708	if inp, ok := mgr.corpus[sig]; ok {709		// The input is already present, but possibly with diffent signal/coverage/call.710		inp.Signal = cover.Union(inp.Signal, a.RpcInput.Signal)711		inp.Cover = cover.Union(inp.Cover, a.RpcInput.Cover)712		mgr.corpus[sig] = inp713	} else {714		mgr.corpus[sig] = a.RpcInput715		mgr.corpusDB.Save(sig, a.RpcInput.Prog, 0)716		if err := mgr.corpusDB.Flush(); err != nil {717			Logf(0, "failed to save corpus database: %v", err)718		}719		for _, f1 := range mgr.fuzzers {720			if f1 == f {721				continue722			}723			inp := a.RpcInput724			inp.Cover = nil // Don't send coverage back to all fuzzers.725			f1.inputs = append(f1.inputs, inp)726		}727	}728	return nil729}730func (mgr *Manager) Poll(a *PollArgs, r *PollRes) error {731	mgr.mu.Lock()732	defer mgr.mu.Unlock()733	for k, v := range a.Stats {734		mgr.stats[k] += v735	}736	f := mgr.fuzzers[a.Name]737	if f == nil {738		Fatalf("fuzzer %v is not connected", a.Name)739	}740	var newMaxSignal []uint32741	for _, s := range a.MaxSignal {742		if _, ok := mgr.maxSignal[s]; ok {743			continue744		}745		mgr.maxSignal[s] = struct{}{}746		newMaxSignal = append(newMaxSignal, s)747	}748	for _, f1 := range mgr.fuzzers {749		if f1 == f {750			continue751		}752		f1.newMaxSignal = append(f1.newMaxSignal, newMaxSignal...)753	}754	r.MaxSignal = f.newMaxSignal755	f.newMaxSignal = nil756	for i := 0; i < 100 && len(f.inputs) > 0; i++ {757		last := len(f.inputs) - 1758		r.NewInputs = append(r.NewInputs, f.inputs[last])759		f.inputs = f.inputs[:last]760	}761	if len(f.inputs) == 0 {762		f.inputs = nil763	}764	for i := 0; i < mgr.cfg.Procs && len(mgr.candidates) > 0; i++ {765		last := len(mgr.candidates) - 1766		r.Candidates = append(r.Candidates, mgr.candidates[last])767		mgr.candidates = mgr.candidates[:last]768	}769	if len(mgr.candidates) == 0 {770		mgr.candidates = nil771	}772	Logf(2, "poll from %v: recv maxsignal=%v, send maxsignal=%v candidates=%v inputs=%v",773		a.Name, len(a.MaxSignal), len(r.MaxSignal), len(r.Candidates), len(r.NewInputs))774	return nil775}776func (mgr *Manager) hubSync() {777	mgr.mu.Lock()778	defer mgr.mu.Unlock()779	if !mgr.vmChecked || len(mgr.candidates) != 0 {780		return781	}782	mgr.minimizeCorpus()783	if mgr.hub == nil {784		a := &HubConnectArgs{785			Name:  mgr.cfg.Name,786			Key:   mgr.cfg.Hub_Key,787			Fresh: mgr.fresh,788			Calls: mgr.enabledCalls,789		}790		hubCorpus := make(map[hash.Sig]bool)791		for _, inp := range mgr.corpus {792			hubCorpus[hash.Hash(inp.Prog)] = true793			a.Corpus = append(a.Corpus, inp.Prog)794		}795		mgr.mu.Unlock()796		// Hub.Connect request can be very large, so do it on a transient connection...

main.go

Source:main.go

...67		execThreads = c.GlobalInt(execThreadsFlag.Name)68		configFile  = c.GlobalString(configFileFlag.Name)69	)70	if c.GlobalBool(corpusMinimizeFlag.Name) {71		minimizeCorpus()72		return73	}74	vms, err := getVMsFromConfig(configFile)75	if err != nil {76		panic(err)77	}78	exec := executor.NewExecutor(vms, true)79	ensureDirs(dirName, outDir)80	if c.GlobalBool(buildFlag.Name) {81		if err := startBuilder(); err != nil {82			panic(err)83		}84	} else if c.GlobalString(retestFlag.Name) != "" {85		retest(c, exec)86	} else if c.GlobalBool(execNoGen.Name) {87		if err := exec.Execute(dirName, outDir, execThreads); err != nil {88			panic(err)89		}90	} else if c.GlobalInt(benchFlag.Name) != 0 {91		benchmark.RunFullBench(c.GlobalInt(benchFlag.Name), execThreads)92	} else if c.GlobalInt(corpusFlag.Name) != 0 {93		createCorpus(c.GlobalInt(corpusFlag.Name))94	} else {95		generatorLoop(c, exec)96	}97}98func startBuilder() error {99	cmdName := "go-fuzz-build"100	cmd := exec.Command(cmdName)101	cmd.Dir = "fuzzer"102	cmd.Stdout = os.Stdout103	cmd.Stderr = os.Stderr104	// We have to disable CGO105	cgo := "CGO_ENABLED=0"106	env := append(os.Environ(), cgo)107	cmd.Env = env108	return cmd.Run()109}110func retest(c *cli.Context, exec *executor.Executor) {111	p := c.GlobalString(retestFlag.Name)112	dir := path.Dir(p)113	test := path.Base(p)114	exec.ExecuteFullTest(dirName, dir, test, false)115}116func generatorLoop(c *cli.Context, exec *executor.Executor) {117	var (118		genThreads  = c.GlobalInt(genThreadsFlag.Name)119		execThreads = c.GlobalInt(execThreadsFlag.Name)120		minTests    = c.GlobalInt(minTestsFlag.Name)121		maxTests    = c.GlobalInt(maxTestsFlag.Name)122		errChan     = make(chan error)123	)124	for {125		fmt.Println("Starting generator")126		cmd := startGenerator(genThreads)127		go func() {128			for {129				// Sleep a bit to ensure some tests have been generated.130				time.Sleep(30 * time.Second)131				fmt.Println("Starting executor")132				if err := exec.Execute(dirName, outDir, execThreads); err != nil {133					errChan <- err134					return135				}136				errChan <- nil137			}138		}()139		go watcher(cmd, errChan, maxTests)140		err := <-errChan141		cmd.Process.Signal(os.Kill)142		if err != nil {143			panic(err)144		}145		infos, err := ioutil.ReadDir(dirName)146		if err != nil {147			panic(err)148		}149		if len(infos) > minTests {150			fmt.Println("Tests exceed minTests after execution")151			return152		}153	}154}155func startGenerator(genThreads int) *exec.Cmd {156	cmdName := "go-fuzz"157	dir := "./fuzzer/fuzzer-fuzz.zip"158	cmd := exec.Command(cmdName, "--bin", dir, "--procs", fmt.Sprint(genThreads))159	cmd.Stdout = os.Stdout160	cmd.Stderr = os.Stderr161	if err := cmd.Start(); err != nil {162		panic(err)163	}164	return cmd165}166func watcher(cmd *exec.Cmd, errChan chan error, maxTests int) {167	for {168		time.Sleep(time.Second * 5)169		infos, err := ioutil.ReadDir(dirName)170		if err != nil {171			fmt.Printf("Error killing process: %v\n", err)172			cmd.Process.Kill()173			errChan <- errors.Wrapf(err, "can't open the directory %q", dirName)174		}175		if len(infos) > maxTests {176			fmt.Printf("Max tests exceeded, pausing\n")177			cmd.Process.Signal(os.Interrupt)178			return179		}180	}181}182func createCorpus(n int) {183	const dir = "corpus"184	ensureDirs(dir)185	for i := 0; i < n; i++ {186		elem, err := fuzzer.CreateNewCorpusElement()187		if err != nil {188			fmt.Printf("Error while creating corpus: %v\n", err)189		}190		hash := sha1.Sum(elem)191		filename := fmt.Sprintf("%v/%v", dir, common.Bytes2Hex(hash[:]))192		if err := ioutil.WriteFile(filename, elem, 0755); err != nil {193			fmt.Printf("Error while writing corpus element: %v\n", err)194		}195	}196}197func minimizeCorpus() {198	const dir = "corpus"199	ensureDirs(dir)200	infos, err := ioutil.ReadDir(dirName)201	if err != nil {202		panic(err)203	}204	toDelete := make(map[string]struct{})205	for i, info := range infos {206		f, err := ioutil.ReadFile(info.Name())207		if err != nil {208			continue209		}210		for k, info2 := range infos {211			if k == i {...

flags.go

Source:flags.go

...60		Name:  "corpus",61		Usage: "Number of corpus elements that should be created",62	}63	corpusMinimizeFlag = cli.BoolFlag{64		Name:  "minimizeCorpus",65		Usage: "If minimizeCorpus is set we run the corpus minimizer",66	}67	configFileFlag = cli.StringFlag{68		Name:  "config",69		Usage: "Path to the config file required to run FuzzyVM",70		Value: "config.toml",71	}72)...

minimizeCorpus

Using AI Code Generation

1import java.io.IOException;2import java.util.ArrayList;3import java.util.List;4import java.util.Scanner;5public class Main {6    public static void main(String[] args) throws IOException {7        Scanner sc = new Scanner(System.in);8        List<String> corpus = new ArrayList<>();9        String str = sc.nextLine();10        corpus.add(str);11        while(!str.equals("")){12            str = sc.nextLine();13            corpus.add(str);14        }15        corpus.remove(corpus.size()-1);16        List<String> newCorpus = minimizeCorpus(corpus);17        for(String s : newCorpus){18            System.out.println(s);19        }20    }21    public static List<String> minimizeCorpus(List<String> corpus){22        List<String> newCorpus = new ArrayList<>();23        for(String s : corpus){24            if(!newCorpus.contains(s)){25                newCorpus.add(s);26            }27        }28        return newCorpus;29    }30}

minimizeCorpus

Using AI Code Generation

1import (2func main() {3    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps over the lazy dog"))4    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps over the dog"))5    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps over the lazy"))6    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps over the"))7    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps over"))8    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps"))9    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox"))10    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown"))11    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick"))12    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The"))13    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", ""))14}15import (16func main() {17    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps over the lazy dog"))18    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps over the dog"))19    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps over the lazy"))20    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps over the"))21    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps over"))22    fmt.Println(minimizeCorpus("The quick brown fox jumps over the lazy dog", "The quick brown fox jumps"))23    fmt.Println(minimizeCorpus

minimizeCorpus

Using AI Code Generation

1import (2func main() {3	rand.Seed(time.Now().UnixNano())4	var (5	canvas := svg.New(os.Stdout)6	canvas.Start(width, height)7	canvas.Rect(0, 0, width, height)8	canvas.Gstyle("fill:none;stroke:black;stroke-width:2")9	canvas.Circle(width/2, height/2, 100)10	canvas.Circle(width/2, height/2, 200)11	canvas.Circle(width/2, height/2, 300)12	canvas.Gend()13	canvas.End()14}15import (16func main() {17	rand.Seed(time.Now().UnixNano())18	var (19	canvas := svg.New(os.Stdout)20	canvas.Start(width, height)21	canvas.Rect(0, 0, width, height)22	canvas.Gstyle("fill:none;stroke:black;stroke-width:2")23	canvas.Circle(width/2, height/2, 100)24	canvas.Circle(width/2, height/2, 200)25	canvas.Circle(width/2, height/2, 300)26	canvas.Gend()27	canvas.End()28}29import (30func main() {31	rand.Seed(time.Now().UnixNano())32	var (33	canvas := svg.New(os.Stdout)34	canvas.Start(width, height)35	canvas.Rect(0, 0, width, height)36	canvas.Gstyle("fill:none;stroke:black;stroke-width:2")37	canvas.Circle(width/2, height/2, 100)38	canvas.Circle(width/2, height/2, 200)39	canvas.Circle(width/2, height/2, 300)40	canvas.Gend()41	canvas.End()42}

minimizeCorpus

Using AI Code Generation

1import (2func main() {3    corpus, err := ioutil.ReadFile("corpus.txt")4    if err != nil {5        log.Fatal(err)6    }7    stopwords, err := ioutil.ReadFile("stopwords.txt")8    if err != nil {9        log.Fatal(err)10    }11    corpusString := string(corpus)12    stopwordsString := string(stopwords)13    corpusSlice := strings.Fields(corpusString)14    stopwordsSlice := strings.Fields(stopwordsString)15    m := new(main)16    minimizedCorpus := m.minimizeCorpus(corpusSlice, stopwordsSlice)17    err = ioutil.WriteFile("minimizedCorpus.txt", []byte(strings.Join(minimizedCorpus, "18    if err != nil {19        log.Fatal(err)20    }21}22import (23func main() {24    corpus, err := ioutil.ReadFile("corpus.txt")25    if err != nil {26        log.Fatal(err)27    }28    stopwords, err := ioutil.ReadFile("stopwords.txt")29    if err != nil {30        log.Fatal(err)31    }32    corpusString := string(corpus)33    stopwordsString := string(stopwords)34    corpusSlice := strings.Fields(corpusString)35    stopwordsSlice := strings.Fields(stopwordsString)36    m := new(main)37    minimizedCorpus := m.minimizeCorpus(corpusSlice, stopwordsSlice)38    err = ioutil.WriteFile("minimizedCorpus.txt", []byte(strings.Join(minimized

minimizeCorpus

Using AI Code Generation

1import (2func main() {3 f := fuzzy.New()4 f.Add("dog")5 f.Add("dogs")6 f.Add("do

minimizeCorpus

Using AI Code Generation

1import (2func main() {3	file, err := os.Open("C:\\Users\\siddh\\Desktop\\corpus.txt")4	if err != nil {5		fmt.Println(err)6	}7	scanner := bufio.NewScanner(file)8	for scanner.Scan() {

minimizeCorpus

Using AI Code Generation

1import "fmt"2import "github.com/ajaykumargupta/MinimizeCorpus/minimizecorpus"3func main() {4    corpus = append(corpus, "Hello")5    corpus = append(corpus, "Hello World")6    corpus = append(corpus, "Hello World!")7    corpus = append(corpus, "Hello World!!")8    corpus = append(corpus, "Hello World!!!")9    corpus = append(corpus, "Hello World!!!!")10    corpus = append(corpus, "Hello World!!!!!")11    corpus = append(corpus, "Hello World!!!!!!")12    corpus = append(corpus, "Hello World!!!!!!!")13    corpus = append(corpus, "Hello World!!!!!!!!")14    corpus = append(corpus, "Hello World!!!!!!!!!")15    corpus = append(corpus, "Hello World!!!!!!!!!!")16    corpus = append(corpus, "Hello World!!!!!!!!!!!")17    corpus = append(corpus, "Hello World!!!!!!!!!!!!")18    corpus = append(corpus, "Hello World!!!!!!!!!!!!!")19    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!")20    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!")21    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!")22    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!")23    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!")24    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!")25    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!")26    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!")27    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!")28    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!!")29    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!!!")30    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!!!!")31    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!!!!!")32    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!!!!!!")33    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!!!!!!!")34    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")35    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")36    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!")37    corpus = append(corpus, "Hello World!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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