How to use Diagnose method of vm Package

Best Syzkaller code snippet using vm.Diagnose

vm_test.go

Source:vm_test.go

...38func (inst *testInstance) Run(timeout time.Duration, stop <-chan bool, command string) (39	outc <-chan []byte, errc <-chan error, err error) {40	return inst.outc, inst.errc, nil41}42func (inst *testInstance) Diagnose() ([]byte, bool) {43	var diag []byte44	if inst.diagnoseBug {45		diag = []byte("BUG: DIAGNOSE\n")46	} else {47		diag = []byte("DIAGNOSE\n")48	}49	if inst.diagnoseNoWait {50		return diag, false51	}52	inst.outc <- diag53	return nil, true54}55func (inst *testInstance) Close() {56}57func init() {58	beforeContext = maxErrorLength + 10059	tickerPeriod = 1 * time.Second60	NoOutputTimeout = 5 * time.Second61	waitForOutputTimeout = 3 * time.Second62	ctor := func(env *vmimpl.Env) (vmimpl.Pool, error) {63		return &testPool{}, nil64	}65	vmimpl.Register("test", ctor, false)66}67type Test struct {68	Name           string69	Exit           ExitCondition70	DiagnoseBug    bool // Diagnose produces output that is detected as kernel crash71	DiagnoseNoWait bool // Diagnose returns output directly rather than to console72	Body           func(outc chan []byte, errc chan error)73	Report         *report.Report74}75var tests = []*Test{76	{77		Name: "program-exits-normally",78		Exit: ExitNormal,79		Body: func(outc chan []byte, errc chan error) {80			time.Sleep(time.Second)81			errc <- nil82		},83	},84	{85		Name: "program-exits-when-it-should-not",86		Body: func(outc chan []byte, errc chan error) {87			time.Sleep(time.Second)88			errc <- nil89		},90		Report: &report.Report{91			Title: lostConnectionCrash,92		},93	},94	{95		Name:        "#875-diagnose-bugs",96		Exit:        ExitNormal,97		DiagnoseBug: true,98		Body: func(outc chan []byte, errc chan error) {99			errc <- nil100		},101	},102	{103		Name: "#875-diagnose-bugs-2",104		Body: func(outc chan []byte, errc chan error) {105			errc <- nil106		},107		Report: &report.Report{108			Title: lostConnectionCrash,109			Output: []byte(110				"DIAGNOSE\n",111			),112		},113	},114	{115		Name: "diagnose-no-wait",116		Body: func(outc chan []byte, errc chan error) {117			errc <- nil118		},119		DiagnoseNoWait: true,120		Report: &report.Report{121			Title: lostConnectionCrash,122			Output: []byte(123				"\n" +124					"VM DIAGNOSIS:\n" +125					"DIAGNOSE\n",126			),127		},128	},129	{130		Name: "diagnose-bug-no-wait",131		Body: func(outc chan []byte, errc chan error) {132			outc <- []byte("BUG: bad\n")133			time.Sleep(time.Second)134			outc <- []byte("other output\n")135		},136		DiagnoseNoWait: true,137		Report: &report.Report{138			Title: "BUG: bad",139			Report: []byte(140				"BUG: bad\n" +141					"other output\n",142			),143			Output: []byte(144				"BUG: bad\n" +145					"other output\n" +146					"\n" +147					"VM DIAGNOSIS:\n" +148					"DIAGNOSE\n",149			),150		},151	},152	{153		Name: "kernel-crashes",154		Body: func(outc chan []byte, errc chan error) {155			outc <- []byte("BUG: bad\n")156			time.Sleep(time.Second)157			outc <- []byte("other output\n")158		},159		Report: &report.Report{160			Title: "BUG: bad",161			Report: []byte(162				"BUG: bad\n" +163					"DIAGNOSE\n" +164					"other output\n",165			),166		},167	},168	{169		Name: "fuzzer-is-preempted",170		Body: func(outc chan []byte, errc chan error) {171			outc <- []byte("BUG: bad\n")172			outc <- []byte(fuzzerPreemptedStr + "\n")173		},174	},175	{176		Name: "program-exits-but-kernel-crashes-afterwards",177		Exit: ExitNormal,178		Body: func(outc chan []byte, errc chan error) {179			errc <- nil180			time.Sleep(time.Second)181			outc <- []byte("BUG: bad\n")182		},183		Report: &report.Report{184			Title: "BUG: bad",185			Report: []byte(186				"BUG: bad\n" +187					"DIAGNOSE\n",188			),189		},190	},191	{192		Name: "timeout",193		Exit: ExitTimeout,194		Body: func(outc chan []byte, errc chan error) {195			errc <- vmimpl.ErrTimeout196		},197	},198	{199		Name: "bad-timeout",200		Body: func(outc chan []byte, errc chan error) {201			errc <- vmimpl.ErrTimeout202		},203		Report: &report.Report{204			Title: timeoutCrash,205		},206	},207	{208		Name: "program-crashes",209		Body: func(outc chan []byte, errc chan error) {210			errc <- fmt.Errorf("error")211		},212		Report: &report.Report{213			Title: lostConnectionCrash,214		},215	},216	{217		Name: "program-crashes-expected",218		Exit: ExitError,219		Body: func(outc chan []byte, errc chan error) {220			errc <- fmt.Errorf("error")221		},222	},223	{224		Name: "no-output-1",225		Body: func(outc chan []byte, errc chan error) {226		},227		Report: &report.Report{228			Title: noOutputCrash,229		},230	},231	{232		Name: "no-output-2",233		Body: func(outc chan []byte, errc chan error) {234			for i := 0; i < 5; i++ {235				time.Sleep(time.Second)236				outc <- []byte("something\n")237			}238		},239		Report: &report.Report{240			Title: noOutputCrash,241		},242	},243	{244		Name: "no-no-output-1",245		Exit: ExitNormal,246		Body: func(outc chan []byte, errc chan error) {247			for i := 0; i < 5; i++ {248				time.Sleep(time.Second)249				outc <- []byte(executingProgramStr1 + "\n")250			}251			errc <- nil252		},253	},254	{255		Name: "no-no-output-2",256		Exit: ExitNormal,257		Body: func(outc chan []byte, errc chan error) {258			for i := 0; i < 5; i++ {259				time.Sleep(time.Second)260				outc <- []byte(executingProgramStr2 + "\n")261			}262			errc <- nil263		},264	},265	{266		Name: "outc-closed",267		Exit: ExitTimeout,268		Body: func(outc chan []byte, errc chan error) {269			close(outc)270			time.Sleep(time.Second)271			errc <- vmimpl.ErrTimeout272		},273	},274	{275		Name: "lots-of-output",276		Exit: ExitTimeout,277		Body: func(outc chan []byte, errc chan error) {278			for i := 0; i < 100; i++ {279				outc <- []byte("something\n")280			}281			time.Sleep(time.Second)282			errc <- vmimpl.ErrTimeout283		},284	},285	{286		Name: "split-line",287		Exit: ExitNormal,288		Body: func(outc chan []byte, errc chan error) {289			// "ODEBUG:" lines should be ignored, however the matchPos logic290			// used to trim the lines so that we could see just "BUG:" later291			// and detect it as crash.292			buf := new(bytes.Buffer)293			for i := 0; i < 50; i++ {294				buf.WriteString("[ 2886.597572] ODEBUG: Out of memory. ODEBUG disabled\n")295				buf.Write(bytes.Repeat([]byte{'-'}, i))296				buf.WriteByte('\n')297			}298			output := buf.Bytes()299			for i := range output {300				outc <- output[i : i+1]301			}302			errc <- nil303		},304	},305}306func TestMonitorExecution(t *testing.T) {307	for _, test := range tests {308		test := test309		t.Run(test.Name, func(t *testing.T) {310			t.Parallel()311			testMonitorExecution(t, test)312		})313	}314}315func testMonitorExecution(t *testing.T, test *Test) {316	dir, err := ioutil.TempDir("", "syz-vm-test")317	if err != nil {318		t.Fatal(err)319	}320	defer os.RemoveAll(dir)321	cfg := &mgrconfig.Config{322		Workdir:      dir,323		TargetOS:     "linux",324		TargetArch:   "amd64",325		TargetVMArch: "amd64",326		Type:         "test",327	}328	pool, err := Create(cfg, false)329	if err != nil {330		t.Fatal(err)331	}332	reporter, err := report.NewReporter(cfg)333	if err != nil {334		t.Fatal(err)335	}336	inst, err := pool.Create(0)337	if err != nil {338		t.Fatal(err)339	}340	defer inst.Close()341	outc, errc, err := inst.Run(time.Second, nil, "")342	if err != nil {343		t.Fatal(err)344	}345	testInst := inst.impl.(*testInstance)346	testInst.diagnoseBug = test.DiagnoseBug347	testInst.diagnoseNoWait = test.DiagnoseNoWait348	done := make(chan bool)349	go func() {350		test.Body(testInst.outc, testInst.errc)351		done <- true352	}()353	rep := inst.MonitorExecution(outc, errc, reporter, test.Exit)354	<-done355	if test.Report != nil && rep == nil {356		t.Fatalf("got no report")357	}358	if test.Report == nil && rep != nil {359		t.Fatalf("got unexpected report: %v", rep.Title)360	}361	if test.Report == nil {...

Diagnose

Using AI Code Generation

1import (2func main() {3	fmt.Println(stringutil.Reverse("!oG ,olleH"))4	fmt.Println(icomefromalaska.BearName)5	fmt.Println(icomefromalaska.Diagnose(2))6}

Diagnose

Using AI Code Generation

1import (2func main() {3	if err = sdl.Init(sdl.INIT_EVERYTHING); err != nil {4		fmt.Fprintf(os.Stderr, "Failed to initialize SDL: %s\n", err)5		os.Exit(1)6	}7	defer sdl.Quit()8	if err = ttf.Init(); err != nil {9		fmt.Fprintf(os.Stderr, "Failed to initialize TTF: %s\n", err)10		os.Exit(1)11	}12	defer ttf.Quit()13	window, err = sdl.CreateWindow("SDL2 TTF Example", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, 800, 600, sdl.WINDOW_SHOWN)14	if err != nil {15		fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)16		os.Exit(1)17	}18	defer window.Destroy()19	renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)20	if err != nil {21		fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)22		os.Exit(1)23	}24	defer renderer.Destroy()25	font, err = ttf.OpenFont("resources/lazy.ttf", 28)26	if err != nil {27		fmt.Fprintf(os.Stderr, "Failed to open font: %s\n", err)28		os.Exit(1)29	}30	defer font.Close()31	textColor := sdl.Color{R: 0, G: 255, B: 255, A: 255}32	surface, err := font.RenderUTF8_Shaded("Hello World!", textColor, sdl.Color{R: 0, G: 0, B: 0, A: 0})33	if err != nil {34		fmt.Fprintf(os.Stderr, "Failed to render text: %s\n", err)35		os.Exit(1)36	}37	defer surface.Free()38	texture, err := renderer.CreateTextureFromSurface(surface)39	if err != nil {

Diagnose

Using AI Code Generation

1import (2func main() {3 vm := vm.NewVM()4 vm.Diagnose()5 fmt.Println("Diagnose is completed")6}

Diagnose

Using AI Code Generation

1import (2func main() {3	ctx, cancel := context.WithCancel(context.Background())4	defer cancel()5	c, err := GetClient(ctx)6	if err != nil {7		panic(err)8	}9	vmRef, err := GetVMByIP(ctx, c, "

Diagnose

Using AI Code Generation

1import (2func main() {3 vm := virtualmachine.NewVirtualMachine("Pratik", 100)4 vm.Diagnose()5 fmt.Println(vm)6}

Diagnose

Using AI Code Generation

1import (2func main() {3 vm1 := vm.New("vm1")4 vm1.Diagnose()5 fmt.Println(vm1.Name())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.