How to use extractError method of vm Package

Best Syzkaller code snippet using vm.extractError

vm.go

Source:vm.go

...163				crash := ""164				if mon.exit&ExitNormal == 0 {165					crash = lostConnectionCrash166				}167				return mon.extractError(crash)168			case ErrTimeout:169				if mon.exit&ExitTimeout == 0 {170					return mon.extractError(timeoutCrash)171				}172				return nil173			default:174				// Note: connection lost can race with a kernel oops message.175				// In such case we want to return the kernel oops.176				crash := ""177				if mon.exit&ExitError == 0 {178					crash = lostConnectionCrash179				}180				return mon.extractError(crash)181			}182		case out, ok := <-outc:183			if !ok {184				outc = nil185				continue186			}187			lastPos := len(mon.output)188			mon.output = append(mon.output, out...)189			if bytes.Contains(mon.output[lastPos:], executingProgram1) ||190				bytes.Contains(mon.output[lastPos:], executingProgram2) {191				lastExecuteTime = time.Now()192			}193			if reporter.ContainsCrash(mon.output[mon.matchPos:]) {194				return mon.extractError("unknown error")195			}196			if len(mon.output) > 2*beforeContext {197				copy(mon.output, mon.output[len(mon.output)-beforeContext:])198				mon.output = mon.output[:beforeContext]199			}200			// Find the starting position for crash matching on the next iteration.201			// We step back from the end of output by maxErrorLength to handle the case202			// when a crash line is currently split/incomplete. And then we try to find203			// the preceding '\n' to have a full line. This is required to handle204			// the case when a particular pattern is ignored as crash, but a suffix205			// of the pattern is detected as crash (e.g. "ODEBUG:" is trimmed to "BUG:").206			mon.matchPos = len(mon.output) - maxErrorLength207			for i := 0; i < maxErrorLength; i++ {208				if mon.matchPos <= 0 || mon.output[mon.matchPos-1] == '\n' {209					break210				}211				mon.matchPos--212			}213			if mon.matchPos < 0 {214				mon.matchPos = 0215			}216		case <-ticker.C:217			// Detect both "not output whatsoever" and "kernel episodically prints218			// something to console, but fuzzer is not actually executing programs".219			// The timeout used to be 3 mins for a long time.220			// But (1) we were seeing flakes on linux where net namespace221			// destruction can be really slow, and (2) gVisor watchdog timeout222			// is 3 mins + 1/4 of that for checking period = 3m45s.223			// Current linux max timeout is CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=140224			// and workqueue.watchdog_thresh=140 which both actually result225			// in 140-280s detection delay.226			// So the current timeout is 5 mins (300s).227			// We don't want it to be too long too because it will waste time on real hangs.228			if time.Since(lastExecuteTime) < NoOutputTimeout {229				break230			}231			diag, wait := inst.Diagnose()232			if len(diag) > 0 {233				mon.output = append(mon.output, "DIAGNOSIS:\n"...)234				mon.output = append(mon.output, diag...)235			}236			if wait {237				mon.waitForOutput()238			}239			rep := &report.Report{240				Title:      noOutputCrash,241				Output:     mon.output,242				Suppressed: report.IsSuppressed(mon.reporter, mon.output),243			}244			return rep245		case <-Shutdown:246			return nil247		}248	}249}250type monitor struct {251	inst     *Instance252	outc     <-chan []byte253	errc     <-chan error254	reporter report.Reporter255	exit     ExitCondition256	output   []byte257	matchPos int258}259func (mon *monitor) extractError(defaultError string) *report.Report {260	var diagOutput []byte261	appendDiagOutput := func() {262		if len(diagOutput) > 0 {263			mon.output = append(mon.output, report.VMDiagnosisStart...)264			mon.output = append(mon.output, diagOutput...)265		}266	}267	if defaultError != "" {268		// N.B. we always wait below for other errors.269		diagOutput, _ = mon.inst.Diagnose()270	}271	// Give it some time to finish writing the error message.272	mon.waitForOutput()273	if bytes.Contains(mon.output, []byte(fuzzerPreemptedStr)) {...

extractError

Using AI Code Generation

1import (2func main() {3 vm := vm.NewVM()4 err := vm.Run("2.vm")5 if err != nil {6 fmt.Println(err)7 }8}

extractError

Using AI Code Generation

1import (2func main() {3	vm := otto.New()4	_, err := vm.Run(`5		var error = new Error("This is an error");6		throw error;7	if err != nil {8		extractedError := extractError(err)9		fmt.Println(extractedError)10	}11}12func extractError(err error) string {13	vm := otto.New()14	vm.Set("err", err.Error())15	result, _ := vm.Run(`16		var error = JSON.parse(err);17		error.message;18	if result.IsString() {19		return result.String()20	}21}

extractError

Using AI Code Generation

1import (2func main() {3	vm := otto.New()4	vm.Run(`5		var a = 2;6		var b = 3;7		var c = a + b;8		if(c > 4) {9			throw new Error('c is greater than 4');10		}11	err := vm.ExportTo(vm.Get("error"), nil)12	fmt.Println(err)13}14panic(0x4b2e00, 0xc42000a0f0)15github.com/robertkrimen/otto.(*vm).extractError(0xc42007e000, 0x4, 0xc42007e000)16github.com/robertkrimen/otto.(*vm).run(0xc42007e000, 0xc42007e000, 0x0, 0x0, 0x0, 0x0)17github.com/robertkrimen/otto.(*vm).Run(0xc42007e000, 0xc42000a0c0, 0x2b, 0x0, 0x0, 0x0)18github.com/robertkrimen/otto.(*Otto).Run(0xc42000a0a0, 0xc42000a0c0, 0x2b, 0x0, 0x0, 0x0)19main.main()

extractError

Using AI Code Generation

1import (2func main() {3	trace.Start(os.Stderr)4	defer trace.Stop()5	runtime.GOMAXPROCS(1)6	go func() {7	}()8	time.Sleep(3 * time.Second)9}10import (11func main() {12	trace.Start(os.Stderr)13	defer trace.Stop()14	runtime.GOMAXPROCS(1)15	go func() {16		time.Sleep(3 * time.Second)17		panic("oops")18	}()19	time.Sleep(3 * time.Second)20}21import (22func main() {23	trace.Start(os.Stderr)24	defer trace.Stop()25	runtime.GOMAXPROCS(1)26	go func() {27		time.Sleep(3 * time.Second)28		panic("oops")29	}()30	time.Sleep(3 * time.Second)31	panic("oops")32}33import (34func main() {35	trace.Start(os.Stderr)36	defer trace.Stop()37	runtime.GOMAXPROCS(1)38	go func() {39		time.Sleep(3 * time.Second)40		panic("oops")41	}()42	time.Sleep(3 * time.Second)43	panic("oops")44}45import (46func main() {47	trace.Start(os.Stderr)48	defer trace.Stop()49	runtime.GOMAXPROCS(1)50	go func() {

extractError

Using AI Code Generation

1import (2type VM struct {3}4func (vm *VM) ExtractError() error {5	return fmt.Errorf("error")6}7func main() {8	vm := VM{9		Memory: []byte{1, 2, 3},10	}11	err := vm.ExtractError()12	fmt.Println(err)13}

extractError

Using AI Code Generation

1import (2func main() {3	fmt.Println("main started")4	go func() {5		defer func() {6			if r := recover(); r != nil {7				fmt.Println("recoverd from ", r)8			}9		}()10		fmt.Println("goroutine started")11		func() {12			defer func() {13				if r := recover(); r != nil {14					fmt.Println("recoverd from ", r)15				}16			}()17			fmt.Println("sub goroutine started")18			fmt.Println("sub goroutine ended")19		}()20		fmt.Println("goroutine ended")21	}()22	time.Sleep(time.Second * 1)23	fmt.Println("main ended")24}25import (26func main() {27	fmt.Println("main started")28	go func() {29		defer func() {30			if r := recover(); r != nil {31				fmt.Println("recoverd from ", r)32			}33		}()34		fmt.Println("goroutine started")35		func() {36			defer func() {37				if r := recover(); r != nil {38					fmt.Println("recoverd from ", r)39				}40			}()41			fmt.Println("sub goroutine started")42			fmt.Println("sub goroutine ended")43		}()44		fmt.Println("goroutine ended")45	}()46	time.Sleep(time.Second * 1)47	fmt.Println("main ended")48}49import (50func main() {51	fmt.Println("main started")52	go func() {53		defer func() {54			if r := recover(); r != nil {55				fmt.Println("recoverd from ", r)56			}57		}()58		fmt.Println("goroutine started")59		func() {60			defer func() {61				if r := recover(); r != nil {62					fmt.Println("recoverd from ", r)63				}64			}()65			fmt.Println("sub goroutine started")

extractError

Using AI Code Generation

1import (2func main() {3	if len(os.Args) != 3 {4		fmt.Println("Usage: go run 2.go <vm-name> <datastore-name>")5	}6	client, err := vm.NewClient(7		os.Getenv("VMWARE_HOST"),8		os.Getenv("VMWARE_USERNAME"),9		os.Getenv("VMWARE_PASSWORD"),10	if err != nil {11		log.Fatal(err)12	}13	vms, err := client.FindVM(vmName)14	if err != nil {15		log.Fatal(err)16	}17	if len(vms) == 0 {18		log.Fatalf("VM %s not found", vmName)19	}20	err = client.MoveVM(vm, dsName)21	if err != nil {22		log.Fatal(err)23	}24}

extractError

Using AI Code Generation

1func main() {2    vm := NewVM()3    vm.Run("somecode")4    err := vm.extractError()5    fmt.Println(err)6}7func main() {8    vm := NewVM()9    vm.Run("somecode")10    err := vm.extractError()11    fmt.Println(err)12}13func main() {14    vm := NewVM()15    vm.Run("somecode")16    err := vm.extractError()17    fmt.Println(err)18}19func main() {20    vm := NewVM()21    vm.Run("somecode")22    err := vm.extractError()23    fmt.Println(err)24}25func main() {26    vm := NewVM()27    vm.Run("somecode")28    err := vm.extractError()29    fmt.Println(err)30}31func main() {32    vm := NewVM()33    vm.Run("somecode")34    err := vm.extractError()35    fmt.Println(err)36}37func main() {38    vm := NewVM()39    vm.Run("somecode")40    err := vm.extractError()41    fmt.Println(err)42}43func main() {44    vm := NewVM()45    vm.Run("somecode")46    err := vm.extractError()47    fmt.Println(err)48}49func main() {50    vm := NewVM()51    vm.Run("some

extractError

Using AI Code Generation

1func main() {2    vm := NewVM()3    err := vm.Run("2.go")4    if err != nil {5        fmt.Println(err.Error())6    }7}8func main() {9    vm := NewVM()10    err := vm.Run("2.go")11    if err != nil {12        fmt.Println(err.Error())13    }14}15func main() {16    vm := NewVM()17    err := vm.Run("2.go")18    if err != nil {19        fmt.Println(err.Error())20    }21}22func main() {23    vm := NewVM()24    err := vm.Run("2.go")25    if err != nil {26        fmt.Println(err.Error())27    }28}29func main() {30    vm := NewVM()31    err := vm.Run("2.go")32    if err != nil {33        fmt.Println(err.Error())34    }35}36func main() {37    vm := NewVM()38    err := vm.Run("2.go")39    if err != nil {40        fmt.Println(err.Error())41    }42}43func main() {44    vm := NewVM()45    err := vm.Run("2.go")46    if err != nil {47        fmt.Println(err.Error())48    }49}50func main() {51    vm := NewVM()52    err := vm.Run("2.go")

extractError

Using AI Code Generation

1import (2func main() {3 vmObj := vm.New()4 err := fmt.Errorf("error message")5 vmObj.ExtractError(err)6}

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.