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How to use monitorExecution method of vm Package

Best Syzkaller code snippet using vm.monitorExecution

vm.go

Source:vm.go

1// Copyright 2015 syzkaller project authors. All rights reserved.2// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.3// Package vm provides an abstract test machine (VM, physical machine, etc)4// interface for the rest of the system.5// For convenience test machines are subsequently collectively called VMs.6// Package wraps vmimpl package interface with some common functionality7// and higher-level interface.8package vm9import (10	"bytes"11	"fmt"12	"os"13	"time"14	"github.com/google/syzkaller/pkg/osutil"15	"github.com/google/syzkaller/pkg/report"16	"github.com/google/syzkaller/vm/vmimpl"17	// Import all VM implementations, so that users only need to import vm.18	_ "github.com/google/syzkaller/vm/adb"19	_ "github.com/google/syzkaller/vm/gce"20	_ "github.com/google/syzkaller/vm/isolated"21	_ "github.com/google/syzkaller/vm/kvm"22	_ "github.com/google/syzkaller/vm/odroid"23	_ "github.com/google/syzkaller/vm/qemu"24	//Charm start25	. "github.com/google/syzkaller/pkg/log"26	_ "github.com/google/syzkaller/vm/adbemu"27	//Charm end28)29type Pool struct {30	impl    vmimpl.Pool31	workdir string32}33type Instance struct {34	impl    vmimpl.Instance35	workdir string36	index   int37}38type Env vmimpl.Env39var (40	Shutdown   = vmimpl.Shutdown41	ErrTimeout = vmimpl.ErrTimeout42	//Charm start43	CharmErr = vmimpl.CharmErr44	//Charm end45)46type BootErrorer interface {47	BootError() (string, []byte)48}49func Create(typ string, env *Env) (*Pool, error) {50	impl, err := vmimpl.Create(typ, (*vmimpl.Env)(env))51	if err != nil {52		return nil, err53	}54	return &Pool{55		impl:    impl,56		workdir: env.Workdir,57	}, nil58}59func (pool *Pool) Count() int {60	return pool.impl.Count()61}62//Charm start63func (pool *Pool) Shutdown() {64	pool.impl.Shutdown()65}66//Charm end67func (pool *Pool) Create(index int) (*Instance, error) {68	if index < 0 || index >= pool.Count() {69		return nil, fmt.Errorf("invalid VM index %v (count %v)", index, pool.Count())70	}71	workdir, err := osutil.ProcessTempDir(pool.workdir)72	if err != nil {73		return nil, fmt.Errorf("failed to create instance temp dir: %v", err)74	}75	impl, err := pool.impl.Create(workdir, index)76	if err != nil {77		os.RemoveAll(workdir)78		return nil, err79	}80	return &Instance{81		impl:    impl,82		workdir: workdir,83		index:   index,84	}, nil85}86func (inst *Instance) Copy(hostSrc string) (string, error) {87	return inst.impl.Copy(hostSrc)88}89func (inst *Instance) Forward(port int) (string, error) {90	return inst.impl.Forward(port)91}92func (inst *Instance) Run(timeout time.Duration, stop <-chan bool, command string) (93	outc <-chan []byte, errc <-chan error, err error) {94	return inst.impl.Run(timeout, stop, command)95}96func (inst *Instance) Close() {97	inst.impl.Close()98	os.RemoveAll(inst.workdir)99}100// MonitorExecution monitors execution of a program running inside of a VM.101// It detects kernel oopses in output, lost connections, hangs, etc.102// outc/errc is what vm.Instance.Run returns, reporter parses kernel output for oopses.103// If canExit is false and the program exits, it is treated as an error.104// Returns a non-symbolized crash report, or nil if no error happens.105func MonitorExecution(outc <-chan []byte, errc <-chan error, reporter report.Reporter, canExit bool) (106	rep *report.Report) {107	var output []byte108	waitForOutput := func() {109		timer := time.NewTimer(10 * time.Second).C110		for {111			select {112			case out, ok := <-outc:113				if !ok {114					return115				}116				output = append(output, out...)117			case <-timer:118				return119			}120		}121	}122	matchPos := 0123	const (124		beforeContext = 1024 << 10125		afterContext  = 128 << 10126	)127	extractError := func(defaultError string) *report.Report {128		// Give it some time to finish writing the error message.129		waitForOutput()130		if bytes.Contains(output, []byte("SYZ-FUZZER: PREEMPTED")) {131			return nil132		}133		if !reporter.ContainsCrash(output[matchPos:]) {134			if defaultError == "" {135				if canExit {136					return nil137				}138				defaultError = "lost connection to test machine"139			}140			rep := &report.Report{141				Title:  defaultError,142				Output: output,143			}144			return rep145		}146		rep := reporter.Parse(output[matchPos:])147		if rep == nil {148			panic(fmt.Sprintf("reporter.ContainsCrash/Parse disagree:\n%s", output[matchPos:]))149		}150		start := matchPos + rep.StartPos - beforeContext151		if start < 0 {152			start = 0153		}154		end := matchPos + rep.EndPos + afterContext155		if end > len(output) {156			end = len(output)157		}158		rep.Output = output[start:end]159		rep.StartPos += matchPos - start160		rep.EndPos += matchPos - start161		return rep162	}163	lastExecuteTime := time.Now()164	ticker := time.NewTimer(3 * time.Minute)165	tickerFired := false166	for {167		if !tickerFired && !ticker.Stop() {168			<-ticker.C169		}170		tickerFired = false171		ticker.Reset(3 * time.Minute)172		select {173		case err := <-errc:174			switch err {175			case nil:176				// The program has exited without errors,177				// but wait for kernel output in case there is some delayed oops.178				return extractError("")179			//Charm start180			case CharmErr:181				Logf(0, "MonitorExecution [14.1]")182				return extractError("Lost the Charm USB channel (most likely a phone crash)")183			//Charm end184			case ErrTimeout:185				return nil186			default:187				// Note: connection lost can race with a kernel oops message.188				// In such case we want to return the kernel oops.189				return extractError("lost connection to test machine II")190			}191		case out := <-outc:192			output = append(output, out...)193			// syz-fuzzer output194			if bytes.Contains(output[matchPos:], []byte("executing program")) {195				lastExecuteTime = time.Now()196			}197			// syz-execprog output198			if bytes.Contains(output[matchPos:], []byte("executed programs:")) {199				lastExecuteTime = time.Now()200			}201			if reporter.ContainsCrash(output[matchPos:]) {202				return extractError("unknown error")203			}204			if len(output) > 2*beforeContext {205				copy(output, output[len(output)-beforeContext:])206				output = output[:beforeContext]207			}208			matchPos = len(output) - 512209			if matchPos < 0 {210				matchPos = 0211			}212			// In some cases kernel episodically prints something to console,213			// but fuzzer is not actually executing programs.214			// We intentionally produce the same title as no output at all,215			// because frequently it's the same condition.216			//Charm start217			////if time.Since(lastExecuteTime) > 3*time.Minute {218			if time.Since(lastExecuteTime) > 1*time.Minute {219				//Charm end220				rep := &report.Report{221					Title:  "no output from test machine",222					Output: output,223				}224				return rep225			}226		case <-ticker.C:227			tickerFired = true228			rep := &report.Report{229				Title:  "no output from test machine",230				Output: output,231			}232			return rep233		case <-Shutdown:234			return nil235		}236	}237}...

monitorExecution

Using AI Code Generation

1import (2func main() {3	if err != nil {4		log.Fatal(err)5	}6	contractAddress := common.HexToAddress("0x7BfB1Bb1eC6fD8b8c9d9C2c3c3f3a2b2B2b2b2b2")7	abi := "[{\"inputs\": [],\"stateMutability\": \"nonpayable\",\"type\": \"constructor\"},{\"inputs\": [{\"internalType\": \"uint256\",\"name\": \"_a\",\"type\": \"uint256\"},{\"internalType\": \"uint256\",\"name\": \"_b\",\"type\": \"uint256\"}],\"name\": \"add\",\"outputs\": [{\"internalType\": \"uint256\",\"name\": \"result\",\"type\": \"uint256\"}],\"stateMutability\": \"nonpayable\",\"type\": \"function\"}]"8	instance, err := NewAdd(contractAddress, client)9	if err != nil {10		log.Fatal(err)11	}12	auth := bind.NewKeyedTransactor(common.HexToECDSA("private key"))13	ch := make(chan *types.Receipt)14	go monitorExecution(ch, client, instance, auth)15	fmt.Println("Tx

monitorExecution

Using AI Code Generation

1import (2func stringToUint64(str string) uint64 {3	i, err := strconv.ParseUint(str, 10, 64)4	if err != nil {5		panic(err)6	}7}8func main() {9	runtimeConfig := &runtime.Config{

monitorExecution

Using AI Code Generation

1import (2func main() {3	if err != nil {4		log.Fatal(err)5	}6	blockNumber := big.NewInt(10000000)7	block, err := client.BlockByNumber(context.Background(), blockNumber)8	if err != nil {9		log.Fatal(err)10	}11	txHash := block.Transactions()[0].Hash()12	receipt, err := client.TransactionReceipt(context.Background(), txHash)13	if err != nil {14		log.Fatal(err)15	}16	tx, isPending, err := client.TransactionByHash(context.Background(), txHash)17	if err != nil {18		log.Fatal(err)19	}20	if isPending {21		log.Fatal("Transaction is pending")22	}

monitorExecution

Using AI Code Generation

1import (2func main() {3    if err != nil {4        fmt.Println(err)5    }6    contractAddress := common.HexToAddress("0x4c6a9e6f")7    contractAbi, err := abi.JSON(strings.NewReader(`[{"constant":false,"inputs":[{"name":"_num","type":"uint256"}],"name":"setNumber","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"getNumber","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"_num","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"}]`))8    if err != nil {9        fmt.Println(err)10    }11    contractInstance := bind.NewBoundContract(contractAddress, contractAbi, nil, nil, nil)12    txHash := common.HexToHash("0x9c2c9a9a6b7d1b1a1e1e8b8f6d6d6c6a6a6a6b6b6b6b6c6c6c6a6a6a6a6a6a6a")13    tx, _, err := client.TransactionByHash(context.Background(), txHash)

monitorExecution

Using AI Code Generation

1import (2func main() {3	vm := vm.NewVM()4	state := state.New(common.Hash{}, state.NewDatabase(nil))5	block := types.NewBlockWithHeader(&types.Header{6		Coinbase:   common.Address{},7		Number:     big.NewInt(1),8		Extra:      []byte{},9		Time:       big.NewInt(1),10		Difficulty: big.NewInt(1),11		Root:       common.Hash{},12	})13	tx := types.NewTransaction(0, common.Address{}, big.NewInt(0), 1000000000000, big.NewInt(0), nil)14	env := core.NewEVMContext(tx, block.Header(), nil, nil)15	execution := vm.NewExecution(env, nil, nil, params.MainnetChainConfig, vm.Config{})16	contract := core.NewContract(crypto.PubkeyToAddress(tx.From().PublicKey), tx.To(), tx.Value(), tx.Gas())17	jumpTable := jump_table.NewJumpTable()18	instructionSet := instructions.NewInstructionSet()

monitorExecution

Using AI Code Generation

1import (2func main() {3	env := vm.NewEVM(vm.Context{}, state.New(common.Hash{}), params.TestChainConfig, vm.Config{})4	contract := vm.NewContract(&types.Message{5		From:     common.HexToAddress("0x0"),6		To:       &common.HexToAddress("0x0"),7		GasPrice: big.NewInt(0),8		Value:    big.NewInt(0),9		Data:     []byte{},10	}, &types.Header{11	}, nil)

monitorExecution

Using AI Code Generation

1import (2func main() {3	vm := runtime.NewVM()4	monitor := runtime.NewMonitor()5	execution := runtime.NewExecution()6	executionContext := runtime.NewExecutionContext()7	execution.SetContext(executionContext)8	monitor.SetExecution(execution)9	vm.SetMonitor(monitor)10	vm.SetExecution(execution)11	vm.SetExecutionContext(executionContext)12	thread := runtime.NewThread()13	executionContext.SetThread(thread)14	thread.SetContext(executionContext)15	frame := runtime.NewFrame()16	executionContext.SetFrame(frame)17	frame.SetContext(executionContext)18	frame.SetThread(thread)19	thread.SetFrame(frame)20	frame.SetExecution(execution)21	frame.SetContext(executionContext)22	monitor.SetExecution(execution)23	monitor.SetContext(executionContext)24	monitor.SetThread(thread)25	monitor.SetFrame(frame)26	execution.SetMonitor(monitor)27	executionContext.SetMonitor(monitor)28	thread.SetMonitor(monitor)29	frame.SetMonitor(monitor)30	execution.SetVM(vm)31	execution.SetContext(executionContext)32	execution.SetThread(thread)33	execution.SetFrame(frame)

monitorExecution

Using AI Code Generation

1import (2func main() {3	fmt.Println("main start")4	vm := runtime.NewVM()5	vm.SetMonitorExecution(true)6	compiled, err := vm.Compile("test.go", `7func main() {8	fmt.Println("Hello, playground")9}10	if err != nil {11		fmt.Println(err)12	}13	_, err = vm.Run(compiled)14	if err != nil {15		fmt.Println(err)16	}17	fmt.Println("execution time:", vm.ExecutionTime())18	fmt.Println("main end")19}20import (21func main() {22	fmt.Println("main start")23	vm := runtime.NewVM()24	vm.SetMonitorExecution(true)25	compiled, err := vm.Compile("test.go", `26func main() {27	fmt.Println("Hello, playground")28	time.Sleep(1 * time.Second)29}30	if err != nil {31		fmt.Println(err)32	}33	_, err = vm.Run(compiled)34	if err != nil {35		fmt.Println(err)36	}37	fmt.Println("execution time:", vm.ExecutionTime())38	fmt.Println("main end")39}40import (41func main() {42	fmt.Println("main start")43	vm := runtime.NewVM()44	vm.SetMonitorExecution(true)

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