Esempio n. 1
0
func main() {
	os.Args = append(append([]string{}, os.Args[0], "-v=10"), os.Args[1:]...)
	flag.Parse()
	cfg, _, err := config.Parse(*flagConfig)
	if err != nil {
		Fatalf("%v", err)
	}
	if *flagCount > 0 {
		cfg.Count = *flagCount
	}
	if cfg.Count > 4 {
		cfg.Count = 4
	}
	if len(flag.Args()) != 1 {
		Fatalf("usage: syz-repro -config=config.file execution.log")
	}
	data, err := ioutil.ReadFile(flag.Args()[0])
	if err != nil {
		Fatalf("failed to open log file: %v", err)
	}
	vmIndexes := make([]int, cfg.Count)
	for i := range vmIndexes {
		vmIndexes[i] = i
	}

	go func() {
		c := make(chan os.Signal, 2)
		signal.Notify(c, syscall.SIGINT)
		<-c
		close(vm.Shutdown)
		Logf(-1, "shutting down...")
		<-c
		Fatalf("terminating")
	}()

	res, err := repro.Run(data, cfg, vmIndexes)
	if err != nil {
		Logf(0, "reproduction failed: %v", err)
	}
	if res == nil {
		return
	}

	fmt.Printf("opts: %+v crepro: %v\n\n", res.Opts, res.CRepro)
	fmt.Printf("%s\n", res.Prog.Serialize())
	if res.CRepro {
		src, err := csource.Write(res.Prog, res.Opts)
		if err != nil {
			Fatalf("failed to generate C repro: %v", err)
		}
		if formatted, err := csource.Format(src); err == nil {
			src = formatted
		}
		fmt.Printf("%s\n", src)
	}
}
Esempio n. 2
0
func main() {
	flag.Parse()
	cfg, syscalls, suppressions, err := config.Parse(*flagConfig)
	if err != nil {
		fatalf("%v", err)
	}
	if *flagDebug {
		cfg.Debug = true
		cfg.Count = 1
	}
	RunManager(cfg, syscalls, suppressions)
}
Esempio n. 3
0
func main() {
	flag.Parse()
	EnableLogCaching(1000, 1<<20)
	cfg, syscalls, suppressions, err := config.Parse(*flagConfig)
	if err != nil {
		Fatalf("%v", err)
	}
	if *flagDebug {
		cfg.Debug = true
		cfg.Count = 1
	}
	initAllCover(cfg.Vmlinux)
	RunManager(cfg, syscalls, suppressions)
}
Esempio n. 4
0
func main() {
	flag.Parse()
	cfg, _, err := config.Parse(*flagConfig)
	if err != nil {
		Fatalf("%v", err)
	}
	if len(flag.Args()) != 1 {
		Fatalf("usage: syz-crush -config=config.file execution.log")
	}

	Logf(0, "booting test machines...")
	var shutdown uint32
	var wg sync.WaitGroup
	wg.Add(cfg.Count + 1)
	for i := 0; i < cfg.Count; i++ {
		i := i
		go func() {
			defer wg.Done()
			for {
				vmCfg, err := config.CreateVMConfig(cfg, i)
				if atomic.LoadUint32(&shutdown) != 0 {
					break
				}
				if err != nil {
					Fatalf("failed to create VM config: %v", err)
				}
				runInstance(cfg, vmCfg)
				if atomic.LoadUint32(&shutdown) != 0 {
					break
				}
			}
		}()
	}

	go func() {
		c := make(chan os.Signal, 2)
		signal.Notify(c, syscall.SIGINT)
		<-c
		wg.Done()
		atomic.StoreUint32(&shutdown, 1)
		close(vm.Shutdown)
		Logf(-1, "shutting down...")
		atomic.StoreUint32(&shutdown, 1)
		<-c
		Fatalf("terminating")
	}()
	wg.Wait()
}
Esempio n. 5
0
func main() {
	flag.Parse()
	cfg, _, _, err := config.Parse(*flagConfig)
	if err != nil {
		log.Fatalf("%v", err)
	}
	if *flagCount > 0 {
		cfg.Count = *flagCount
	}

	if len(flag.Args()) != 1 {
		log.Fatalf("usage: syz-repro -config=config.file execution.log")
	}
	data, err := ioutil.ReadFile(flag.Args()[0])
	if err != nil {
		log.Fatalf("failed to open log file: %v", err)
	}
	entries := prog.ParseLog(data)
	log.Printf("parsed %v programs", len(entries))

	crashLoc := vm.CrashRe.FindIndex(data)
	if crashLoc == nil {
		log.Fatalf("can't find crash message in the log")
	}
	log.Printf("target crash: '%s'", data[crashLoc[0]:crashLoc[1]])

	instances = make(chan VM, cfg.Count)
	bootRequests = make(chan bool, cfg.Count)
	for i := 0; i < cfg.Count; i++ {
		bootRequests <- true
		go func() {
			for range bootRequests {
				vmCfg, err := config.CreateVMConfig(cfg)
				if err != nil {
					log.Fatalf("failed to create VM config: %v", err)
				}
				inst, err := vm.Create(cfg.Type, vmCfg)
				if err != nil {
					log.Fatalf("failed to create VM: %v", err)
				}
				execprogBin, err := inst.Copy(filepath.Join(cfg.Syzkaller, "bin/syz-execprog"))
				if err != nil {
					log.Fatalf("failed to copy to VM: %v", err)
				}
				executorBin, err := inst.Copy(filepath.Join(cfg.Syzkaller, "bin/syz-executor"))
				if err != nil {
					log.Fatalf("failed to copy to VM: %v", err)
				}
				instances <- VM{inst, execprogBin, executorBin}
			}
		}()
	}

	repro(cfg, entries, crashLoc)

	for {
		select {
		case inst := <-instances:
			inst.Close()
		default:
			return
		}
	}
}
Esempio n. 6
0
func main() {
	flag.Parse()
	cfg, _, _, err := config.Parse(*flagConfig)
	if err != nil {
		Fatalf("%v", err)
	}
	if *flagCount > 0 {
		cfg.Count = *flagCount
	}
	if _, err := os.Stat(filepath.Join(cfg.Syzkaller, "bin/syz-execprog")); err != nil {
		Fatalf("bin/syz-execprog is missing (run 'make execprog')")
	}

	if len(flag.Args()) != 1 {
		Fatalf("usage: syz-repro -config=config.file execution.log")
	}
	data, err := ioutil.ReadFile(flag.Args()[0])
	if err != nil {
		Fatalf("failed to open log file: %v", err)
	}
	entries := prog.ParseLog(data)
	Logf(0, "parsed %v programs", len(entries))

	crashDesc, _, crashStart, _ := report.Parse(data)
	if crashDesc == "" {
		crashStart = len(data) // assuming VM hanged
	}

	instances = make(chan VM, cfg.Count)
	bootRequests = make(chan int, cfg.Count)
	for i := 0; i < cfg.Count; i++ {
		bootRequests <- i
		go func() {
			for index := range bootRequests {
				vmCfg, err := config.CreateVMConfig(cfg, index)
				if err != nil {
					Fatalf("failed to create VM config: %v", err)
				}
				inst, err := vm.Create(cfg.Type, vmCfg)
				if err != nil {
					Fatalf("failed to create VM: %v", err)
				}
				execprogBin, err := inst.Copy(filepath.Join(cfg.Syzkaller, "bin/syz-execprog"))
				if err != nil {
					Fatalf("failed to copy to VM: %v", err)
				}
				executorBin, err := inst.Copy(filepath.Join(cfg.Syzkaller, "bin/syz-executor"))
				if err != nil {
					Fatalf("failed to copy to VM: %v", err)
				}
				instances <- VM{inst, index, execprogBin, executorBin}
			}
		}()
	}

	go func() {
		c := make(chan os.Signal, 2)
		signal.Notify(c, syscall.SIGINT)
		<-c
		close(shutdown)
		Logf(-1, "shutting down...")
		<-c
		Fatalf("terminating")
	}()

	repro(cfg, entries, crashStart)
	exit()
}