How to use saveFailedRepro method of main Package

Best Syzkaller code snippet using main.saveFailedRepro

manager.go

Source:manager.go

...405			instances = append(instances, res.instances...)406			reproInstances -= instancesPerRepro407			if res.res == nil {408				if !res.hub {409					mgr.saveFailedRepro(res.report0, res.stats)410				}411			} else {412				mgr.saveRepro(res.res, res.stats, res.hub)413			}414		case <-shutdown:415			log.Logf(1, "loop: shutting down...")416			shutdown = nil417		case crash := <-mgr.hubReproQueue:418			log.Logf(1, "loop: get repro from hub")419			pendingRepro[crash] = true420		case reply := <-mgr.needMoreRepros:421			reply <- phase >= phaseTriagedHub &&422				len(reproQueue)+len(pendingRepro)+len(reproducing) == 0423			goto wait424		case reply := <-mgr.reproRequest:425			repros := make(map[string]bool)426			for title := range reproducing {427				repros[title] = true428			}429			reply <- repros430			goto wait431		}432	}433}434func (mgr *Manager) loadCorpus() {435	// By default we don't re-minimize/re-smash programs from corpus,436	// it takes lots of time on start and is unnecessary.437	// However, on version bumps we can selectively re-minimize/re-smash.438	minimized, smashed := true, true439	switch mgr.corpusDB.Version {440	case 0:441		// Version 0 had broken minimization, so we need to re-minimize.442		minimized = false443		fallthrough444	case 1:445		// Version 1->2: memory is preallocated so lots of mmaps become unnecessary.446		minimized = false447		fallthrough448	case 2:449		// Version 2->3: big-endian hints.450		smashed = false451		fallthrough452	case 3:453		// Version 3->4: to shake things up.454		minimized = false455		fallthrough456	case currentDBVersion:457	}458	broken := 0459	for key, rec := range mgr.corpusDB.Records {460		bad, disabled := checkProgram(mgr.target, mgr.targetEnabledSyscalls, rec.Val)461		if bad {462			mgr.corpusDB.Delete(key)463			broken++464			continue465		}466		if disabled {467			// This program contains a disabled syscall.468			// We won't execute it, but remember its hash so469			// it is not deleted during minimization.470			mgr.disabledHashes[hash.String(rec.Val)] = struct{}{}471			continue472		}473		mgr.candidates = append(mgr.candidates, rpctype.RPCCandidate{474			Prog:      rec.Val,475			Minimized: minimized,476			Smashed:   smashed,477		})478	}479	mgr.fresh = len(mgr.corpusDB.Records) == 0480	log.Logf(0, "%-24v: %v",481		"corpus", len(mgr.candidates))482	// Now this is ugly.483	// We duplicate all inputs in the corpus and shuffle the second part.484	// This solves the following problem. A fuzzer can crash while triaging candidates,485	// in such case it will also lost all cached candidates. Or, the input can be somewhat flaky486	// and doesn't give the coverage on first try. So we give each input the second chance.487	// Shuffling should alleviate deterministically losing the same inputs on fuzzer crashing.488	mgr.candidates = append(mgr.candidates, mgr.candidates...)489	shuffle := mgr.candidates[len(mgr.candidates)/2:]490	rand.Shuffle(len(shuffle), func(i, j int) {491		shuffle[i], shuffle[j] = shuffle[j], shuffle[i]492	})493	if mgr.phase != phaseInit {494		panic(fmt.Sprintf("loadCorpus: bad phase %v", mgr.phase))495	}496	mgr.phase = phaseLoadedCorpus497}498func checkProgram(target *prog.Target, enabled map[*prog.Syscall]bool, data []byte) (bad, disabled bool) {499	p, err := target.Deserialize(data, prog.NonStrict)500	if err != nil {501		return true, true502	}503	if len(p.Calls) > prog.MaxCalls {504		return true, true505	}506	for _, c := range p.Calls {507		if !enabled[c.Meta] {508			return false, true509		}510	}511	return false, false512}513func (mgr *Manager) runInstance(index int) (*Crash, error) {514	mgr.checkUsedFiles()515	inst, err := mgr.vmPool.Create(index)516	if err != nil {517		return nil, fmt.Errorf("failed to create instance: %v", err)518	}519	defer inst.Close()520	fwdAddr, err := inst.Forward(mgr.port)521	if err != nil {522		return nil, fmt.Errorf("failed to setup port forwarding: %v", err)523	}524	fuzzerBin, err := inst.Copy(mgr.cfg.SyzFuzzerBin)525	if err != nil {526		return nil, fmt.Errorf("failed to copy binary: %v", err)527	}528	// If SyzExecutorCmd is provided, it means that syz-executor is already in529	// the image, so no need to copy it.530	executorCmd := targets.Get(mgr.cfg.TargetOS, mgr.cfg.TargetArch).SyzExecutorCmd531	if executorCmd == "" {532		executorCmd, err = inst.Copy(mgr.cfg.SyzExecutorBin)533		if err != nil {534			return nil, fmt.Errorf("failed to copy binary: %v", err)535		}536	}537	fuzzerV := 0538	procs := mgr.cfg.Procs539	if *flagDebug {540		fuzzerV = 100541		procs = 1542	}543	// Run the fuzzer binary.544	start := time.Now()545	atomic.AddUint32(&mgr.numFuzzing, 1)546	defer atomic.AddUint32(&mgr.numFuzzing, ^uint32(0))547	cmd := instance.FuzzerCmd(fuzzerBin, executorCmd, fmt.Sprintf("vm-%v", index),548		mgr.cfg.TargetOS, mgr.cfg.TargetArch, fwdAddr, mgr.cfg.Sandbox, procs, fuzzerV,549		mgr.cfg.Cover, *flagDebug, false, false)550	outc, errc, err := inst.Run(time.Hour, mgr.vmStop, cmd)551	if err != nil {552		return nil, fmt.Errorf("failed to run fuzzer: %v", err)553	}554	rep := inst.MonitorExecution(outc, errc, mgr.reporter, vm.ExitTimeout)555	if rep == nil {556		// This is the only "OK" outcome.557		log.Logf(0, "vm-%v: running for %v, restarting", index, time.Since(start))558		return nil, nil559	}560	crash := &Crash{561		vmIndex: index,562		hub:     false,563		Report:  rep,564	}565	return crash, nil566}567func (mgr *Manager) emailCrash(crash *Crash) {568	if len(mgr.cfg.EmailAddrs) == 0 {569		return570	}571	args := []string{"-s", "syzkaller: " + crash.Title}572	args = append(args, mgr.cfg.EmailAddrs...)573	log.Logf(0, "sending email to %v", mgr.cfg.EmailAddrs)574	cmd := exec.Command("mailx", args...)575	cmd.Stdin = bytes.NewReader(crash.Report.Report)576	if _, err := osutil.Run(10*time.Minute, cmd); err != nil {577		log.Logf(0, "failed to send email: %v", err)578	}579}580func (mgr *Manager) saveCrash(crash *Crash) bool {581	if crash.Type == report.MemoryLeak {582		mgr.mu.Lock()583		mgr.memoryLeakFrames[crash.Frame] = true584		mgr.mu.Unlock()585	}586	if crash.Type == report.DataRace {587		mgr.mu.Lock()588		mgr.dataRaceFrames[crash.Frame] = true589		mgr.mu.Unlock()590	}591	if crash.Suppressed {592		log.Logf(0, "vm-%v: suppressed crash %v", crash.vmIndex, crash.Title)593		mgr.stats.crashSuppressed.inc()594		return false595	}596	corrupted := ""597	if crash.Corrupted {598		corrupted = " [corrupted]"599	}600	log.Logf(0, "vm-%v: crash: %v%v", crash.vmIndex, crash.Title, corrupted)601	if err := mgr.reporter.Symbolize(crash.Report); err != nil {602		log.Logf(0, "failed to symbolize report: %v", err)603	}604	mgr.stats.crashes.inc()605	mgr.mu.Lock()606	if !mgr.crashTypes[crash.Title] {607		mgr.crashTypes[crash.Title] = true608		mgr.stats.crashTypes.inc()609	}610	mgr.mu.Unlock()611	if mgr.dash != nil {612		if crash.Type == report.MemoryLeak {613			return true614		}615		dc := &dashapi.Crash{616			BuildID:     mgr.cfg.Tag,617			Title:       crash.Title,618			Corrupted:   crash.Corrupted,619			Maintainers: crash.Maintainers,620			Log:         crash.Output,621			Report:      crash.Report.Report,622		}623		resp, err := mgr.dash.ReportCrash(dc)624		if err != nil {625			log.Logf(0, "failed to report crash to dashboard: %v", err)626		} else {627			// Don't store the crash locally, if we've successfully628			// uploaded it to the dashboard. These will just eat disk space.629			return resp.NeedRepro630		}631	}632	sig := hash.Hash([]byte(crash.Title))633	id := sig.String()634	dir := filepath.Join(mgr.crashdir, id)635	osutil.MkdirAll(dir)636	if err := osutil.WriteFile(filepath.Join(dir, "description"), []byte(crash.Title+"\n")); err != nil {637		log.Logf(0, "failed to write crash: %v", err)638	}639	// Save up to 100 reports. If we already have 100, overwrite the oldest one.640	// Newer reports are generally more useful. Overwriting is also needed641	// to be able to understand if a particular bug still happens or already fixed.642	oldestI := 0643	var oldestTime time.Time644	for i := 0; i < 100; i++ {645		info, err := os.Stat(filepath.Join(dir, fmt.Sprintf("log%v", i)))646		if err != nil {647			oldestI = i648			if i == 0 {649				go mgr.emailCrash(crash)650			}651			break652		}653		if oldestTime.IsZero() || info.ModTime().Before(oldestTime) {654			oldestI = i655			oldestTime = info.ModTime()656		}657	}658	osutil.WriteFile(filepath.Join(dir, fmt.Sprintf("log%v", oldestI)), crash.Output)659	if len(mgr.cfg.Tag) > 0 {660		osutil.WriteFile(filepath.Join(dir, fmt.Sprintf("tag%v", oldestI)), []byte(mgr.cfg.Tag))661	}662	if len(crash.Report.Report) > 0 {663		osutil.WriteFile(filepath.Join(dir, fmt.Sprintf("report%v", oldestI)), crash.Report.Report)664	}665	return mgr.needLocalRepro(crash)666}667const maxReproAttempts = 3668func (mgr *Manager) needLocalRepro(crash *Crash) bool {669	if !mgr.cfg.Reproduce || crash.Corrupted {670		return false671	}672	if mgr.checkResult == nil || (mgr.checkResult.Features[host.FeatureLeak].Enabled &&673		crash.Type != report.MemoryLeak) {674		// Leak checking is very slow, don't bother reproducing other crashes.675		return false676	}677	sig := hash.Hash([]byte(crash.Title))678	dir := filepath.Join(mgr.crashdir, sig.String())679	if osutil.IsExist(filepath.Join(dir, "repro.prog")) {680		return false681	}682	for i := 0; i < maxReproAttempts; i++ {683		if !osutil.IsExist(filepath.Join(dir, fmt.Sprintf("repro%v", i))) {684			return true685		}686	}687	return false688}689func (mgr *Manager) needRepro(crash *Crash) bool {690	if crash.hub {691		return true692	}693	if mgr.dash == nil {694		return mgr.needLocalRepro(crash)695	}696	if crash.Type == report.MemoryLeak {697		return true698	}699	cid := &dashapi.CrashID{700		BuildID:   mgr.cfg.Tag,701		Title:     crash.Title,702		Corrupted: crash.Corrupted,703	}704	needRepro, err := mgr.dash.NeedRepro(cid)705	if err != nil {706		log.Logf(0, "dashboard.NeedRepro failed: %v", err)707	}708	return needRepro709}710func (mgr *Manager) saveFailedRepro(rep *report.Report, stats *repro.Stats) {711	if rep.Type == report.MemoryLeak {712		// Don't send failed leak repro attempts to dashboard713		// as we did not send the crash itself.714		return715	}716	if mgr.dash != nil {717		cid := &dashapi.CrashID{718			BuildID: mgr.cfg.Tag,719			Title:   rep.Title,720		}721		if err := mgr.dash.ReportFailedRepro(cid); err != nil {722			log.Logf(0, "failed to report failed repro to dashboard: %v", err)723		} else {724			return...

saveFailedRepro

Using AI Code Generation

1import (2func main() {3	f, err := os.Create("test.txt")4	if err != nil {5		fmt.Println(err)6	}7	defer f.Close()8}9import (10func main() {11	f, err := os.Create("test.txt")12	if err != nil {13		fmt.Println(err)14	}15	defer f.Close()16}17import (18func main() {19	f, err := os.Create("test.txt")20	if err != nil {21		fmt.Println(err)22	}23	defer f.Close()24}25import (26func main() {27	f, err := os.Create("test.txt")28	if err != nil {29		fmt.Println(err)30	}31	defer f.Close()32}33import (34func main() {35	f, err := os.Create("test.txt")36	if err != nil {37		fmt.Println(err)38	}39	defer f.Close()40}41import (42func main() {43	f, err := os.Create("test.txt")44	if err != nil {45		fmt.Println(err)46	}47	defer f.Close()48}49import (50func main() {51	f, err := os.Create("test.txt")52	if err != nil {53		fmt.Println(err)54	}55	defer f.Close()56}57import (58func main() {59	f, err := os.Create("test.txt")60	if err != nil {61		fmt.Println(err)

saveFailedRepro

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, playground")4    saveFailedRepro("sample.txt")5}6import (7func main() {8    fmt.Println("Hello, playground")9    saveFailedRepro("sample.txt")10}11import (12func main() {13    fmt.Println("Hello, playground")14    saveFailedRepro("sample.txt")15}16import (17func main() {18    fmt.Println("Hello, playground")19    saveFailedRepro("sample.txt")20}21import (22func main() {23    fmt.Println("Hello, playground")24    saveFailedRepro("sample.txt")25}26import (27func main() {28    fmt.Println("Hello, playground")29    saveFailedRepro("sample.txt")30}31import (32func main() {33    fmt.Println("Hello, playground")34    saveFailedRepro("sample.txt")35}36import (37func main() {38    fmt.Println("Hello, playground")39    saveFailedRepro("sample.txt")40}41import (42func main() {43    fmt.Println("Hello, playground")44    saveFailedRepro("sample.txt")45}46import (47func main() {48    fmt.Println("Hello, playground")49    saveFailedRepro("sample.txt

saveFailedRepro

Using AI Code Generation

1import (2func main() {3    fmt.Println("hello, world")4    main.saveFailedRepro()5}6import (7func main() {8    fmt.Println("hello, world")9    main.saveFailedRepro()10}11import "fmt"12type Main struct {13}14func (m *Main) SaveFailedRepro() {15    fmt.Println("SaveFailedRepro")16}17func main() {18    m := &Main{Name: "foo"}19    m.SaveFailedRepro()20}

saveFailedRepro

Using AI Code Generation

1import (2func main() {3	debug.SetTraceback("all")4	runtime.SetBlockProfileRate(1)5	runtime.SetMutexProfileFraction(1)6	runtime.SetCPUProfileRate(1)7	go func() {8		for {9		}10	}()11	go func() {12		for {13			runtime.GC()14			runtime.Gosched()15		}16	}()17	go func() {18		for {19			runtime.GC()20			runtime.Gosched()21		}22	}()23	go func() {24		for {25			runtime.GC()26			runtime.Gosched()27		}28	}()29	go func() {30		for {31			runtime.GC()32			runtime.Gosched()33		}34	}()35	go func() {36		for {37			runtime.GC()38			runtime.Gosched()39		}40	}()41	go func() {42		for {43			runtime.GC()44			runtime.Gosched()45		}46	}()47	go func() {48		for {49			runtime.GC()50			runtime.Gosched()51		}52	}()53	go func() {54		for {55			runtime.GC()56			runtime.Gosched()57		}58	}()59	go func() {60		for {61			runtime.GC()62			runtime.Gosched()63		}64	}()65	go func() {66		for {67			runtime.GC()68			runtime.Gosched()69		}70	}()71	go func() {72		for {73			runtime.GC()74			runtime.Gosched()75		}76	}()77	go func() {78		for {79			runtime.GC()80			runtime.Gosched()81		}82	}()83	go func() {84		for {85			runtime.GC()86			runtime.Gosched()87		}88	}()89	go func() {90		for {91			runtime.GC()92			runtime.Gosched()93		}94	}()95	go func() {96		for {97			runtime.GC()98			runtime.Gosched()99		}100	}()101	go func() {102		for {103			runtime.GC()104			runtime.Gosched()

saveFailedRepro

Using AI Code Generation

1import java.io.*;2import java.util.*;3import java.util.regex.*;4import java.util.concurrent.*;5import java.util.concurrent.atomic.*;6import java.util.concurrent.locks.*;7import java.util.concurrent.locks.ReentrantLock;8import java.io.*;9import java.util.*;10import java.util.regex.*;11import java.util.concurrent.*;12import java.util.concurrent.atomic.*;13import java.util.concurrent.locks.*;14import java.util.concurrent.locks.ReentrantLock;15import java.io.*;16import java.util.*;17import java.util.regex.*;18import java.util.concurrent.*;19import java.util.concurrent.atomic.*;20import java.util.concurrent.locks.*;21import java.util.concurrent.locks.ReentrantLock;22import java.io.*;23import java.util.*;24import java.util.regex.*;25import java.util.concurrent.*;26import java.util.concurrent.atomic.*;27import java.util.concurrent.locks.*;28import java.util.concurrent.locks.ReentrantLock;29import java.io.*;30import java.util.*;31import java.util.regex.*;32import java.util.concurrent.*;33import java.util.concurrent.atomic.*;34import java.util.concurrent.locks.*;35import java.util.concurrent.locks.ReentrantLock;36import java.io.*;37import java.util.*;38import java.util.regex.*;39import java.util.concurrent.*;40import java.util.concurrent.atomic.*;41import java.util.concurrent.locks.*;42import java.util.concurrent.locks.ReentrantLock;43import java.io.*;44import java.util.*;45import java.util.regex.*;46import java.util.concurrent.*;47import java.util.concurrent.atomic.*;48import java.util.concurrent.locks.*;49import java.util.concurrent.locks.ReentrantLock;50import java.io.*;51import java.util.*;52import java.util.regex.*;53import java.util.concurrent.*;54import java.util.concurrent.atomic.*;55import java.util.concurrent.locks.*;56import java.util.concurrent.locks.ReentrantLock;57import java.io.*;58import java.util.*;59import java.util.regex.*;60import java.util.concurrent.*;61import java.util.concurrent.atomic.*;62import java.util.concurrent.locks.*;63import java.util.concurrent.locks.ReentrantLock;64import java.io.*;65import java.util.*;66import java.util.regex.*;67import java.util.concurrent.*;68import java.util.concurrent.atomic.*;69import java.util.concurrent.locks.*;70import java.util.concurrent.locks.ReentrantLock;71import java.io.*;72import java.util.*;73import java.util.regex.*;74import java.util.concurrent.*;75import java.util.concurrent.atomic.*;76import java.util.concurrent.locks.*;77import java.util.concurrent.locks.ReentrantLock;78import java.io.*;79import java.util.*;80import java.util.regex.*;81import java.util.concurrent.*;82import java.util.concurrent.atomic.*;83import java.util.concurrent.locks.*;84import java.util.concurrent.locks.ReentrantLock;85import java.io.*;86import java

saveFailedRepro

Using AI Code Generation

1import (2func main() {3	file, err := os.Create("newFile.txt")4	if err != nil {5		fmt.Println("Error creating file:", err)6	}7	defer file.Close()8	fmt.Fprintf(file, "Hello World")9	file, err = os.Open("newFile.txt")10	if err != nil {11		fmt.Println("Error opening file:", err)12	}13	defer file.Close()14	scanner := bufio.NewScanner(file)15	for scanner.Scan() {16		fmt.Println(scanner.Text())17	}18	if err := scanner.Err(); err != nil {19		fmt.Println("Error scanning file:", err)20	}21}22import (23func main() {24	jsonFile, err := os.Open("newFile.txt")25	if err != nil {26		fmt.Println(err)27	}28	fmt.Println("Successfully Opened users.json")29	defer jsonFile.Close()30	byteValue, _ := ioutil.ReadAll(jsonFile)31	json.Unmarshal(byteValue, &users)32	for i := 0; i < len(users.Users); i++ {33		fmt.Println("User Type: " + users.Users[i].Type)34		fmt.Println("Name: " + users.Users[i].Name)35		fmt.Println("Url: " + users.Users[i].Url)36		fmt.Println("")37	}38	f, err := os.Open("newFile.txt")39	if err != nil {40		log.Fatal(err)

saveFailedRepro

Using AI Code Generation

1import (2func main() {3	fmt.Println("Enter the name of the file to be saved")4	fmt.Scanln(&name)5	fmt.Println("Enter the path of the file to be saved")6	fmt.Scanln(&path)7	fmt.Println("Enter the contents of the file to be saved")8	fmt.Scanln(&contents)9	saveFailedRepro(name, path, contents)10}11func saveFailedRepro(name, path, contents string) {12	file, err := os.Create(path + "/" + name)13	if err != nil {14		fmt.Println(err)15	}16	defer file.Close()17	_, err = file.WriteString(contents)18	if err != nil {19		fmt.Println(err)20		file.Close()21	}22	err = file.Close()23	if err != nil {24		fmt.Println(err)25	}26	file, err = os.Open(path + "/" + name)27	if err != nil {28		fmt.Println(err)29	}30	defer file.Close()31	fileContents, err := exec.Command("cat", path+"/"+name).Output()32	if err != nil {33		fmt.Println(err)34	}35	fmt.Println(string(fileContents))36}37Go to the next page: Go: File Handling (2)

saveFailedRepro

Using AI Code Generation

1import (2func main() {3	saveFailedRepro("test.txt")4}5import (6func main() {7	saveFailedRepro("test.txt")8}9import (10func main() {11	saveFailedRepro("test.txt")12}13import (14func main() {15	saveFailedRepro("test.txt")16}17import (18func main() {19	saveFailedRepro("test.txt")20}21import (22func main() {23	saveFailedRepro("test.txt")24}25import (26func main() {27	saveFailedRepro("test.txt")28}29import (30func main() {

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.