How to use checkDelayKcovMmap method of host Package

Best Syzkaller code snippet using host.checkDelayKcovMmap

features_linux.go

Source:features_linux.go

...17func init() {18	checkFeature[FeatureCoverage] = checkCoverage19	checkFeature[FeatureComparisons] = checkComparisons20	checkFeature[FeatureExtraCoverage] = checkExtraCoverage21	checkFeature[FeatureDelayKcovMmap] = checkDelayKcovMmap22	checkFeature[FeatureSandboxSetuid] = unconditionallyEnabled23	checkFeature[FeatureSandboxNamespace] = checkSandboxNamespace24	checkFeature[FeatureSandboxAndroid] = checkSandboxAndroid25	checkFeature[FeatureFault] = checkFault26	checkFeature[FeatureLeak] = checkLeak27	checkFeature[FeatureNetInjection] = checkNetInjection28	checkFeature[FeatureNetDevices] = unconditionallyEnabled29	checkFeature[FeatureKCSAN] = checkKCSAN30	checkFeature[FeatureDevlinkPCI] = checkDevlinkPCI31	checkFeature[FeatureUSBEmulation] = checkUSBEmulation32	checkFeature[FeatureVhciInjection] = checkVhciInjection33	checkFeature[FeatureWifiEmulation] = checkWifiEmulation34	checkFeature[Feature802154Emulation] = check802154Emulation35}36func checkCoverage() string {37	if reason := checkDebugFS(); reason != "" {38		return reason39	}40	if !osutil.IsExist("/sys/kernel/debug/kcov") {41		return "CONFIG_KCOV is not enabled"42	}43	if err := osutil.IsAccessible("/sys/kernel/debug/kcov"); err != nil {44		return err.Error()45	}46	return ""47}48func checkComparisons() (reason string) {49	return checkCoverageFeature(FeatureComparisons)50}51func checkExtraCoverage() (reason string) {52	return checkCoverageFeature(FeatureExtraCoverage)53}54func checkDelayKcovMmap() string {55	// The kcov implementation in Linux (currently) does not adequately handle subsequent56	// mmap invocations on the same descriptor. When that problem is fixed, we want57	// syzkaller to differentiate between distributions as this allows to noticeably speed58	// up fuzzing.59	return checkCoverageFeature(FeatureDelayKcovMmap)60}61func kcovTestMmap(fd int, coverSize uintptr) (reason string) {62	mem, err := syscall.Mmap(fd, 0, int(coverSize*unsafe.Sizeof(uintptr(0))),63		syscall.PROT_READ|syscall.PROT_WRITE, syscall.MAP_SHARED)64	if err != nil {65		return fmt.Sprintf("KCOV mmap failed: %v", err)66	}67	defer func() {68		if err := syscall.Munmap(mem); err != nil {...

checkDelayKcovMmap

Using AI Code Generation

1func main() {2    host := new(Host)3    host.checkDelayKcovMmap()4}5func main() {6    host := new(Host)7    host.checkDelayKcovMmap()8}9func main() {10    host := new(Host)11    host.checkDelayKcovMmap()12}13func main() {14    host := new(Host)15    host.checkDelayKcovMmap()16}17func main() {18    host := new(Host)19    host.checkDelayKcovMmap()20}21func main() {22    host := new(Host)23    host.checkDelayKcovMmap()24}25func main() {26    host := new(Host)27    host.checkDelayKcovMmap()28}29func main() {30    host := new(Host)31    host.checkDelayKcovMmap()32}33func main() {34    host := new(Host)35    host.checkDelayKcovMmap()36}37func main() {38    host := new(Host)39    host.checkDelayKcovMmap()40}41func main() {42    host := new(Host)43    host.checkDelayKcovMmap()44}45func main() {46    host := new(Host)47    host.checkDelayKcovMmap()48}

checkDelayKcovMmap

Using AI Code Generation

1import "fmt"2func main() {3    fmt.Println("Hello, playground")4    host := Host{}5    host.checkDelayKcovMmap()6}7import "fmt"8func main() {9    fmt.Println("Hello, playground")10    host := Host{}11    host.checkDelayKcovMmap()12}

checkDelayKcovMmap

Using AI Code Generation

1func main() {2    var host = Host{1, 2, 3}3    host.checkDelayKcovMmap()4}5func main() {6    var host = Host{1, 2, 3}7    host.checkDelayKcovMmap()8}9func main() {10    var host = Host{1, 2, 3}11    host.checkDelayKcovMmap()12}13func main() {14    var host = Host{1, 2, 3}15    host.checkDelayKcovMmap()16}17func main() {18    var host = Host{1, 2, 3}19    host.checkDelayKcovMmap()20}21func main() {22    var host = Host{1, 2, 3}23    host.checkDelayKcovMmap()24}25func main() {26    var host = Host{1, 2, 3}27    host.checkDelayKcovMmap()28}29func main() {30    var host = Host{1, 2, 3}31    host.checkDelayKcovMmap()32}33func main() {34    var host = Host{1, 2, 3}35    host.checkDelayKcovMmap()36}37func main() {38    var host = Host{1, 2, 3}39    host.checkDelayKcovMmap()40}

checkDelayKcovMmap

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, playground")4    fd, _ = syscall.Open("1.go", syscall.O_RDONLY, 0)5    fmt.Println(fd)6    host.CheckDelayKcovMmap(fd)7    fmt.Println("Hello, playground")8    os.Exit(0)9}10import (11func main() {12    fmt.Println("Hello, playground")13    fd, _ = syscall.Open("1.go", syscall.O_RDONLY, 0)14    fmt.Println(fd)15    host.CheckDelayKcovMmap(fd)16    fmt.Println("Hello, playground")17    os.Exit(0)18}

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