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How to use BuildKernel method of instance Package

Best Syzkaller code snippet using instance.BuildKernel

instance.go

Source:instance.go

...24	"github.com/google/syzkaller/vm"25)26type Env interface {27	BuildSyzkaller(string, string) error28	BuildKernel(string, string, string, string, []byte) (string, string, error)29	Test(numVMs int, reproSyz, reproOpts, reproC []byte) ([]error, error)30}31type env struct {32	cfg *mgrconfig.Config33}34func NewEnv(cfg *mgrconfig.Config) (Env, error) {35	if !vm.AllowsOvercommit(cfg.Type) {36		return nil, fmt.Errorf("test instances are not supported for %v VMs", cfg.Type)37	}38	if cfg.Workdir == "" {39		return nil, fmt.Errorf("workdir path is empty")40	}41	if cfg.KernelSrc == "" {42		return nil, fmt.Errorf("kernel src path is empty")43	}44	if cfg.Syzkaller == "" {45		return nil, fmt.Errorf("syzkaller path is empty")46	}47	if err := osutil.MkdirAll(cfg.Workdir); err != nil {48		return nil, fmt.Errorf("failed to create tmp dir: %v", err)49	}50	env := &env{51		cfg: cfg,52	}53	return env, nil54}55func (env *env) BuildSyzkaller(repo, commit string) error {56	cfg := env.cfg57	srcIndex := strings.LastIndex(cfg.Syzkaller, "/src/")58	if srcIndex == -1 {59		return fmt.Errorf("syzkaller path %q is not in GOPATH", cfg.Syzkaller)60	}61	if _, err := vcs.NewSyzkallerRepo(cfg.Syzkaller).CheckoutCommit(repo, commit); err != nil {62		return fmt.Errorf("failed to checkout syzkaller repo: %v", err)63	}64	cmd := osutil.Command(MakeBin, "target")65	cmd.Dir = cfg.Syzkaller66	cmd.Env = append([]string{}, os.Environ()...)67	cmd.Env = append(cmd.Env,68		"GOPATH="+cfg.Syzkaller[:srcIndex],69		"TARGETOS="+cfg.TargetOS,70		"TARGETVMARCH="+cfg.TargetVMArch,71		"TARGETARCH="+cfg.TargetArch,72		// Since we can be building very old revisions for bisection here,73		// make the build as permissive as possible.74		// Newer compilers tend to produce more warnings also kernel headers may be broken, e.g.:75		// ebtables.h:197:19: error: invalid conversion from âvoid*â to âebt_entry_target*â76		"CFLAGS=-fpermissive -w",77	)78	if _, err := osutil.Run(time.Hour, cmd); err != nil {79		goEnvCmd := osutil.Command("go", "env")80		goEnvCmd.Dir = cfg.Syzkaller81		goEnvCmd.Env = append(append([]string{}, os.Environ()...), "GOPATH="+cfg.Syzkaller[:srcIndex])82		goEnvOut, goEnvErr := osutil.Run(time.Hour, goEnvCmd)83		gitStatusOut, gitStatusErr := osutil.RunCmd(time.Hour, cfg.Syzkaller, "git", "status")84		return fmt.Errorf("syzkaller build failed: %v\ngo env (err=%v)\n%s\ngit status (err=%v)\n%s",85			err, goEnvErr, goEnvOut, gitStatusErr, gitStatusOut)86	}87	return nil88}89func (env *env) BuildKernel(compilerBin, userspaceDir, cmdlineFile, sysctlFile string, kernelConfig []byte) (90	string, string, error) {91	imageDir := filepath.Join(env.cfg.Workdir, "image")92	params := &build.Params{93		TargetOS:     env.cfg.TargetOS,94		TargetArch:   env.cfg.TargetVMArch,95		VMType:       env.cfg.Type,96		KernelDir:    env.cfg.KernelSrc,97		OutputDir:    imageDir,98		Compiler:     compilerBin,99		UserspaceDir: userspaceDir,100		CmdlineFile:  cmdlineFile,101		SysctlFile:   sysctlFile,102		Config:       kernelConfig,103	}...

testbuild.go

Source:testbuild.go

...120	log.Printf("testing: %v %v using %v", com.Hash, com.Title, bisectEnv.Compiler)121	if err := build.Clean(*flagOS, *flagArch, vmType, *flagKernelSrc); err != nil {122		fail(err)123	}124	_, _, err = env.BuildKernel(bisectEnv.Compiler, *flagUserspace,125		*flagKernelCmdline, *flagKernelSysctl, bisectEnv.KernelConfig)126	if err != nil {127		if verr, ok := err.(*osutil.VerboseError); ok {128			log.Printf("BUILD BROKEN: %v", verr.Title)129			saveLog(com.Hash, 0, verr.Output)130		} else {131			log.Printf("BUILD BROKEN: %v", err)132		}133		return134	}135	log.Printf("build OK")136	results, err := env.Test(numTests, nil, nil, nil)137	if err != nil {138		fail(err)...

BuildKernel

Using AI Code Generation

1import (2func main() {3	inst := data.NewInstance()4	kernel := data.NewKernel()5	kernel.BuildKernel(inst, `6		extern "C" __global__ void kernel(float *a, float *b, float *c)7		{8			c[threadIdx.x] = a[threadIdx.x] + b[threadIdx.x];9		}10	kernel.LaunchKernel(inst, 1, 1, 1, 1, 1, 1, 0, nil, nil)11}12import (13func main() {14	inst := data.NewInstance()15	kernel := data.NewKernel()16	kernel.BuildKernel(inst, `17		extern "C" __global__ void kernel(float *a, float *b, float *c)18		{19			c[threadIdx.x] = a[threadIdx.x] + b[threadIdx.x];20		}21	kernel.LaunchKernel(inst, 1, 1, 1, 1, 1, 1, 0, nil, nil)22}

BuildKernel

Using AI Code Generation

1import (2func main() {3	instance := new(Computer)4	value := reflect.ValueOf(instance).Elem()5	typeOfT := value.Type()6	for i := 0; i < value.NumField(); i++ {7		f := value.Field(i)8		fmt.Printf("%d: %s %s = %v9			typeOfT.Field(i).Name, f.Type(), f.Interface())10	}11}12import (13func main() {14	instance := new(Computer)15	value := reflect.ValueOf(instance).Elem()16	typeOfT := value.Type()17	for i := 0; i < value.NumField(); i++ {18		f := value.Field(i)19		fmt.Printf("%d: %s %s = %v20			typeOfT.Field(i).Name, f.Type(), f.Interface())21	}22}23import (24func main() {25	instance := new(Computer)26	value := reflect.ValueOf(instance).Elem()27	typeOfT := value.Type()28	for i := 0; i < value.NumField(); i++ {29		f := value.Field(i)30		fmt.Printf("%d: %s %s = %v31			typeOfT.Field(i).Name, f.Type(), f.Interface())

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