How to use checkConfig method of bisect Package

Best Syzkaller code snippet using bisect.checkConfig

bisect.go

Source:bisect.go

...61//  - if the crash still happens on the oldest release/HEAD (for cause/fix bisection correspondingly),62//    no commits and the crash report on the oldest release/HEAD63//  - if the crash is not reproduced on the start commit, an error64func Run(cfg *Config) ([]*vcs.Commit, *report.Report, error) {65	if err := checkConfig(cfg); err != nil {66		return nil, nil, err67	}68	cfg.Manager.Cover = false // it's not supported somewhere back in time69	repo, err := vcs.NewRepo(cfg.Manager.TargetOS, cfg.Manager.Type, cfg.Manager.KernelSrc)70	if err != nil {71		return nil, nil, err72	}73	bisecter, ok := repo.(vcs.Bisecter)74	if !ok {75		return nil, nil, fmt.Errorf("bisection is not implemented for %v", cfg.Manager.TargetOS)76	}77	env := &env{78		cfg:      cfg,79		repo:     repo,80		bisecter: bisecter,81	}82	if cfg.Fix {83		env.log("bisecting fixing commit since %v", cfg.Kernel.Commit)84	} else {85		env.log("bisecting cause commit starting from %v", cfg.Kernel.Commit)86	}87	start := time.Now()88	commits, rep, err := env.bisect()89	env.log("revisions tested: %v, total time: %v (build: %v, test: %v)",90		env.numTests, time.Since(start), env.buildTime, env.testTime)91	if err != nil {92		env.log("error: %v", err)93		return nil, nil, err94	}95	if len(commits) == 0 {96		if cfg.Fix {97			env.log("the crash still happens on HEAD")98		} else {99			env.log("the crash already happened on the oldest tested release")100		}101		env.log("crash: %v\n%s", rep.Title, rep.Report)102		return nil, rep, nil103	}104	what := "bad"105	if cfg.Fix {106		what = "good"107	}108	if len(commits) > 1 {109		env.log("bisection is inconclusive, the first %v commit could be any of:", what)110		for _, com := range commits {111			env.log("%v", com.Hash)112		}113		return commits, nil, nil114	}115	com := commits[0]116	env.log("first %v commit: %v %v", what, com.Hash, com.Title)117	env.log("cc: %q", com.CC)118	if rep != nil {119		env.log("crash: %v\n%s", rep.Title, rep.Report)120	}121	return commits, rep, nil122}123func (env *env) bisect() ([]*vcs.Commit, *report.Report, error) {124	cfg := env.cfg125	var err error126	if env.inst, err = instance.NewEnv(&cfg.Manager); err != nil {127		return nil, nil, err128	}129	if env.head, err = env.repo.CheckoutBranch(cfg.Kernel.Repo, cfg.Kernel.Branch); err != nil {130		return nil, nil, err131	}132	if err := build.Clean(cfg.Manager.TargetOS, cfg.Manager.TargetVMArch,133		cfg.Manager.Type, cfg.Manager.KernelSrc); err != nil {134		return nil, nil, fmt.Errorf("kernel clean failed: %v", err)135	}136	env.log("building syzkaller on %v", cfg.Syzkaller.Commit)137	if err := env.inst.BuildSyzkaller(cfg.Syzkaller.Repo, cfg.Syzkaller.Commit); err != nil {138		return nil, nil, err139	}140	if _, err := env.repo.CheckoutCommit(cfg.Kernel.Repo, cfg.Kernel.Commit); err != nil {141		return nil, nil, err142	}143	res, _, rep0, err := env.test()144	if err != nil {145		return nil, nil, err146	} else if res != vcs.BisectBad {147		return nil, nil, fmt.Errorf("the crash wasn't reproduced on the original commit")148	}149	bad, good, rep1, err := env.commitRange()150	if err != nil {151		return nil, nil, err152	}153	if good == "" {154		return nil, rep1, nil // still not fixed/happens on the oldest release155	}156	reports := make(map[string]*report.Report)157	reports[cfg.Kernel.Commit] = rep0158	commits, err := env.bisecter.Bisect(bad, good, cfg.Trace, func() (vcs.BisectResult, error) {159		res, com, rep, err := env.test()160		reports[com.Hash] = rep161		if cfg.Fix {162			if res == vcs.BisectBad {163				res = vcs.BisectGood164			} else if res == vcs.BisectGood {165				res = vcs.BisectBad166			}167		}168		return res, err169	})170	var rep *report.Report171	if len(commits) == 1 {172		rep = reports[commits[0].Hash]173	}174	return commits, rep, err175}176func (env *env) commitRange() (string, string, *report.Report, error) {177	if env.cfg.Fix {178		return env.commitRangeForFix()179	}180	return env.commitRangeForBug()181}182func (env *env) commitRangeForFix() (string, string, *report.Report, error) {183	env.log("testing current HEAD %v", env.head.Hash)184	if _, err := env.repo.SwitchCommit(env.head.Hash); err != nil {185		return "", "", nil, err186	}187	res, _, rep, err := env.test()188	if err != nil {189		return "", "", nil, err190	}191	if res != vcs.BisectGood {192		return "", "", rep, nil193	}194	return env.head.Hash, env.cfg.Kernel.Commit, nil, nil195}196func (env *env) commitRangeForBug() (string, string, *report.Report, error) {197	cfg := env.cfg198	tags, err := env.bisecter.PreviousReleaseTags(cfg.Kernel.Commit)199	if err != nil {200		return "", "", nil, err201	}202	if len(tags) == 0 {203		return "", "", nil, fmt.Errorf("no release tags before this commit")204	}205	lastBad := cfg.Kernel.Commit206	var lastRep *report.Report207	for _, tag := range tags {208		env.log("testing release %v", tag)209		if _, err := env.repo.SwitchCommit(tag); err != nil {210			return "", "", nil, err211		}212		res, _, rep, err := env.test()213		if err != nil {214			return "", "", nil, err215		}216		if res == vcs.BisectGood {217			return lastBad, tag, nil, nil218		}219		if res == vcs.BisectBad {220			lastBad = tag221			lastRep = rep222		}223	}224	return "", "", lastRep, nil225}226func (env *env) test() (vcs.BisectResult, *vcs.Commit, *report.Report, error) {227	cfg := env.cfg228	env.numTests++229	current, err := env.repo.HeadCommit()230	if err != nil {231		return 0, nil, nil, err232	}233	bisectEnv, err := env.bisecter.EnvForCommit(current.Hash, cfg.Kernel.Config)234	if err != nil {235		return 0, nil, nil, err236	}237	compiler := filepath.Join(cfg.BinDir, bisectEnv.Compiler, "bin", "gcc")238	compilerID, err := build.CompilerIdentity(compiler)239	if err != nil {240		return 0, nil, nil, err241	}242	env.log("testing commit %v with %v", current.Hash, compilerID)243	buildStart := time.Now()244	if err := build.Clean(cfg.Manager.TargetOS, cfg.Manager.TargetVMArch,245		cfg.Manager.Type, cfg.Manager.KernelSrc); err != nil {246		return 0, nil, nil, fmt.Errorf("kernel clean failed: %v", err)247	}248	err = env.inst.BuildKernel(compiler, cfg.Kernel.Userspace,249		cfg.Kernel.Cmdline, cfg.Kernel.Sysctl, bisectEnv.KernelConfig)250	env.buildTime += time.Since(buildStart)251	if err != nil {252		if verr, ok := err.(*osutil.VerboseError); ok {253			env.log("%v", verr.Title)254			env.saveDebugFile(current.Hash, 0, verr.Output)255		} else if verr, ok := err.(build.KernelBuildError); ok {256			env.log("%v", verr.Title)257			env.saveDebugFile(current.Hash, 0, verr.Output)258		} else {259			env.log("%v", err)260		}261		return vcs.BisectSkip, current, nil, nil262	}263	testStart := time.Now()264	const numTests = 10265	results, err := env.inst.Test(numTests, cfg.Repro.Syz, cfg.Repro.Opts, cfg.Repro.C)266	env.testTime += time.Since(testStart)267	if err != nil {268		env.log("failed: %v", err)269		return vcs.BisectSkip, current, nil, nil270	}271	bad, good, rep := env.processResults(current, results)272	res := vcs.BisectSkip273	if bad != 0 {274		res = vcs.BisectBad275	} else if numTests-good-bad > numTests/3*2 {276		// More than 2/3 of instances failed with infrastructure error,277		// can't reliably tell that the commit is good.278		res = vcs.BisectSkip279	} else if good != 0 {280		res = vcs.BisectGood281	}282	return res, current, rep, nil283}284func (env *env) processResults(current *vcs.Commit, results []error) (bad, good int, rep *report.Report) {285	var verdicts []string286	for i, res := range results {287		if res == nil {288			good++289			verdicts = append(verdicts, "OK")290			continue291		}292		switch err := res.(type) {293		case *instance.TestError:294			if err.Boot {295				verdicts = append(verdicts, fmt.Sprintf("boot failed: %v", err))296			} else {297				verdicts = append(verdicts, fmt.Sprintf("basic kernel testing failed: %v", err))298			}299			output := err.Output300			if err.Report != nil {301				output = err.Report.Output302			}303			env.saveDebugFile(current.Hash, i, output)304		case *instance.CrashError:305			bad++306			rep = err.Report307			verdicts = append(verdicts, fmt.Sprintf("crashed: %v", err))308			output := err.Report.Report309			if len(output) == 0 {310				output = err.Report.Output311			}312			env.saveDebugFile(current.Hash, i, output)313		default:314			verdicts = append(verdicts, fmt.Sprintf("failed: %v", err))315		}316	}317	unique := make(map[string]bool)318	for _, verdict := range verdicts {319		unique[verdict] = true320	}321	if len(unique) == 1 {322		env.log("all runs: %v", verdicts[0])323	} else {324		for i, verdict := range verdicts {325			env.log("run #%v: %v", i, verdict)326		}327	}328	return329}330func (env *env) saveDebugFile(hash string, idx int, data []byte) {331	if env.cfg.DebugDir == "" || len(data) == 0 {332		return333	}334	osutil.MkdirAll(env.cfg.DebugDir)335	osutil.WriteFile(filepath.Join(env.cfg.DebugDir, fmt.Sprintf("%v.%v", hash, idx)), data)336}337func checkConfig(cfg *Config) error {338	if !osutil.IsExist(cfg.BinDir) {339		return fmt.Errorf("bin dir %v does not exist", cfg.BinDir)340	}341	if cfg.Kernel.Userspace != "" && !osutil.IsExist(cfg.Kernel.Userspace) {342		return fmt.Errorf("userspace dir %v does not exist", cfg.Kernel.Userspace)343	}344	if cfg.Kernel.Sysctl != "" && !osutil.IsExist(cfg.Kernel.Sysctl) {345		return fmt.Errorf("sysctl file %v does not exist", cfg.Kernel.Sysctl)346	}347	if cfg.Kernel.Cmdline != "" && !osutil.IsExist(cfg.Kernel.Cmdline) {348		return fmt.Errorf("cmdline file %v does not exist", cfg.Kernel.Cmdline)349	}350	return nil351}...

checkConfig

Using AI Code Generation

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

checkConfig

Using AI Code Generation

1import (2func main() {3	if len(os.Args) != 3 {4		fmt.Println("Invalid number of arguments")5		os.Exit(1)6	}7	if os.Args[1] != "good" && os.Args[1] != "bad" {8		fmt.Println("Invalid arguments")9		os.Exit(1)10	}11	if os.Args[2] != "good" && os.Args[2] != "bad" {12		fmt.Println("Invalid arguments")13		os.Exit(1)14	}15	bisect.checkConfig(os.Args[1], os.Args[2])16}

checkConfig

Using AI Code Generation

1import (2import (3func main() {4	var (5	if bisect.CheckConfig(config) {6		fmt.Println("Config looks good.")7	} else {8		fmt.Println("Config looks bad.")9	}10}11import (12import (13func main() {14	var (15	bisect.Bisect(config)16	fmt.Println("Bisecting done.")17}

checkConfig

Using AI Code Generation

1import (2func main() {3 b := bisect.NewBisect()4 b.CheckConfig()5 fmt.Println(b.Result)6}

checkConfig

Using AI Code Generation

1import (2func main() {3	fmt.Println("enter the number of elements")4	fmt.Scanln(&n)5	fmt.Println("enter the elements")6	for i := 0; i < n; i++ {7		fmt.Scanln(&temp)8		arr = append(arr, temp)9	}10	fmt.Println("enter the key to be searched")11	fmt.Scanln(&key)12	a.SetArray(arr)13	a.SetKey(key)14	result = a.CheckConfig()15	if result == 1 {16		fmt.Println("key found")17	} else {18		fmt.Println("key not found")19	}20	os.Exit(0)21}

checkConfig

Using AI Code Generation

1import (2func main() {3	reader := bufio.NewReader(os.Stdin)4	fmt.Println("Enter the name of the file containing the config details")5	filename, _ := reader.ReadString('\n')6	filename = strings.Replace(filename, "\n", "", -1)7	fmt.Println("Enter the name of the file containing the test cases")8	testcasefile, _ := reader.ReadString('\n')9	testcasefile = strings.Replace(testcasefile, "\n", "", -1)10	bisect := Bisect{}11	bisect.checkConfig(filename, testcasefile)12}

checkConfig

Using AI Code Generation

1import (2type bisect struct {3}4func (b *bisect) checkConfig() {5	fmt.Println("Checking Config file")6}7func main() {8	b := bisect{}9	b.checkConfig()10	fmt.Println("File Path: ", os.Args[1])11}

checkConfig

Using AI Code Generation

1import (2func main() {3	b = bisect.Bisect{}4	b.SetConfiguration("config.json")5	b.CheckConfiguration()6	fmt.Println(b)7}

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