How to use checkConfig method of bisect Package

Best Syzkaller code snippet using bisect.checkConfig

bisect.go

Source:bisect.go Github

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...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}...

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checkConfig

Using AI Code Generation

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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}

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checkConfig

Using AI Code Generation

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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}

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checkConfig

Using AI Code Generation

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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}

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checkConfig

Using AI Code Generation

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

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checkConfig

Using AI Code Generation

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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}

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checkConfig

Using AI Code Generation

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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}

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checkConfig

Using AI Code Generation

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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}

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checkConfig

Using AI Code Generation

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

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