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How to use Neutralize method of targets Package

Best Syzkaller code snippet using targets.Neutralize

init.go

Source:init.go

...8	"github.com/google/syzkaller/sys/targets"9)10func InitTarget(target *prog.Target) {11	arch := &arch{12		unix:             targets.MakeUnixNeutralizer(target),13		CLOCK_REALTIME:   target.GetConst("CLOCK_REALTIME"),14		CTL_KERN:         target.GetConst("CTL_KERN"),15		DIOCCLRSTATES:    target.GetConst("DIOCCLRSTATES"),16		DIOCKILLSTATES:   target.GetConst("DIOCKILLSTATES"),17		KERN_MAXCLUSTERS: target.GetConst("KERN_MAXCLUSTERS"),18		KERN_MAXPROC:     target.GetConst("KERN_MAXPROC"),19		KERN_MAXTHREAD:   target.GetConst("KERN_MAXTHREAD"),20		KERN_WITNESS:     target.GetConst("KERN_WITNESS"),21		S_IFCHR:          target.GetConst("S_IFCHR"),22		S_IFMT:           target.GetConst("S_IFMT"),23		MCL_FUTURE:       target.GetConst("MCL_FUTURE"),24		RLIMIT_DATA:      target.GetConst("RLIMIT_DATA"),25		RLIMIT_STACK:     target.GetConst("RLIMIT_STACK"),26	}27	target.MakeDataMmap = targets.MakePosixMmap(target, false, false)28	target.Neutralize = arch.neutralize29	target.AnnotateCall = arch.annotateCall30}31type arch struct {32	unix             *targets.UnixNeutralizer33	CLOCK_REALTIME   uint6434	CTL_KERN         uint6435	DIOCCLRSTATES    uint6436	DIOCKILLSTATES   uint6437	KERN_MAXCLUSTERS uint6438	KERN_MAXPROC     uint6439	KERN_MAXTHREAD   uint6440	KERN_WITNESS     uint6441	S_IFCHR          uint6442	S_IFMT           uint6443	MCL_FUTURE       uint6444	RLIMIT_DATA      uint6445	RLIMIT_STACK     uint6446}47const (48	mknodMode = 049	mknodDev  = 150	// openbsd:src/etc/etc.amd64/MAKEDEV51	devFdMajor  = 2252	devNullDevT = 0x020253	// kCoverFd in executor/executor.cc.54	kcovFdMinorMin = 23255	// kOutPipeFd in executor/executor.cc.56	kcovFdMinorMax = 24857	// Mask covering all valid rlimit resources.58	rlimitMask = 0xf59)60// openbsd:src/sys/sys/types.h61func devmajor(dev uint64) uint64 {62	return (dev >> 8) & 0xff63}64// openbsd:src/sys/sys/types.h65func devminor(dev uint64) uint64 {66	return (dev & 0xff) | ((dev & 0xffff0000) >> 8)67}68func isKcovFd(dev uint64) bool {69	major := devmajor(dev)70	minor := devminor(dev)71	return major == devFdMajor && minor >= kcovFdMinorMin && minor < kcovFdMinorMax72}73func (arch *arch) neutralize(c *prog.Call) {74	argStart := 175	switch c.Meta.CallName {76	case "chflagsat":77		argStart = 278		fallthrough79	case "chflags", "fchflags":80		// Prevent changing mutability flags on files. This is81		// especially problematic for file descriptors referring to82		// tty/pty devices since it can cause the SSH connection to the83		// VM to die.84		flags := c.Args[argStart].(*prog.ConstArg)85		badflags := [...]uint64{86			0x00000002, // UF_IMMUTABLE87			0x00000004, // UF_APPEND88			0x00020000, // SF_IMMUTABLE89			0x00040000, // SF_APPEND90		}91		for _, f := range badflags {92			flags.Val &= ^f93		}94	case "clock_settime":95		arch.neutralizeClockSettime(c)96	case "ioctl":97		// Performing the following ioctl commands on a /dev/pf file98		// descriptor causes the ssh VM connection to die. For now, just99		// rewire them to an invalid command.100		request := c.Args[1].(*prog.ConstArg)101		if request.Val == arch.DIOCCLRSTATES || request.Val == arch.DIOCKILLSTATES {102			request.Val = 0103		}104	case "mknodat":105		argStart = 2106		fallthrough107	case "mknod":108		// Prevent vnodes of type VBAD from being created. Such vnodes will109		// likely trigger assertion errors by the kernel.110		mode := c.Args[argStart+mknodMode].(*prog.ConstArg)111		if mode.Val&arch.S_IFMT == arch.S_IFMT {112			mode.Val &^= arch.S_IFMT113			mode.Val |= arch.S_IFCHR114		}115		// Prevent /dev/fd/X devices from getting created where X maps116		// to an open kcov fd. They interfere with kcov data collection117		// and cause corpus explosion.118		// https://groups.google.com/d/msg/syzkaller/_IRWeAjVoy4/Akl2XMZTDAAJ119		dev := c.Args[argStart+mknodDev].(*prog.ConstArg)120		if isKcovFd(dev.Val) {121			dev.Val = devNullDevT122		}123		// Prevent /dev/sd0b (swap partition) and /dev/sd0c (raw disk)124		// nodes from being created. Writing to such devices can corrupt125		// the file system.126		if devmajor(dev.Val) == 4 && (devminor(dev.Val) == 1 || devminor(dev.Val) == 2) {127			dev.Val = devNullDevT128		}129	case "mlockall":130		flags := c.Args[0].(*prog.ConstArg)131		flags.Val &= ^arch.MCL_FUTURE132	case "setrlimit":133		arch.neutralizeRlimit(c)134	case "sysctl":135		arch.neutralizeSysctl(c)136	default:137		arch.unix.Neutralize(c)138	}139}140func (arch *arch) neutralizeClockSettime(c *prog.Call) {141	switch v := c.Args[0].(type) {142	case *prog.ConstArg:143		// Do not fiddle with the wall clock, one of the causes of "no144		// output from test machine" reports.145		if v.Val == arch.CLOCK_REALTIME {146			v.Val = ^uint64(0)147		}148	}149}150func (arch *arch) neutralizeRlimit(c *prog.Call) {151	rlimitMin := uint64(0)...

Neutralize

Using AI Code Generation

1targets.Neutralize()2targets.Fire()3targets.Fire()4targets.Fire()5targets.Fire()6targets.Fire()7targets.Fire()8targets.Fire()9targets.Fire()10targets.Fire()11targets.Fire()12targets.Fire()13targets.Fire()14targets.Fire()15targets.Fire()16targets.Fire()17targets.Fire()18targets.Fire()19targets.Fire()20targets.Fire()21targets.Fire()22targets.Fire()23targets.Fire()24targets.Fire()25targets.Fire()

Neutralize

Using AI Code Generation

1import (2func main() {3	targets.Neutralize()4}5import (6func main() {7	targets.Fire()8}9import (10func main() {11	targets.Fire()12}13import (14func main() {15	targets.Fire()16}17import (18func main() {19	targets.Fire()20}21import (22func main() {23	targets.Fire()24}25import (26func main() {27	targets.Fire()28}29import (30func main() {31	targets.Fire()32}33import (34func main() {35	targets.Fire()36}37import (38func main() {39	targets.Fire()40}41import (42func main() {43	targets.Fire()44}45import (46func main() {47	targets.Fire()48}49import (50func main() {51	targets.Fire()52}

Neutralize

Using AI Code Generation

1import "fmt"2func main() {3    t.Neutralize()4}5import "fmt"6func main() {7    w.Attack()8}9import "fmt"10func main() {11    w.Fire()12}13import "fmt"14func main() {15    w.Fire()16}17import "fmt"18func main() {19    w.Fire()20}21import "fmt"22func main() {23    w.Fire()24}25import "fmt"26func main() {27    w.Fire()28}29import "fmt"30func main() {31    w.Fire()32}33import "fmt"34func main() {35    w.Fire()36}37import "fmt"38func main() {39    w.Fire()40}41import "fmt"42func main() {43    w.Fire()44}45import "fmt"46func main() {47    w.Fire()48}49import "fmt"50func main() {51    w.Fire()52}

Neutralize

Using AI Code Generation

1import (2func main() {3    fmt.Println(targets.Neutralize("BANANA"))4    fmt.Println(targets.Neutralize("BANANAS"))5    fmt.Println(targets.Neutralize("BANANAS!"))6    fmt.Println(targets.Neutralize("BANANAS!!"))7    fmt.Println(targets.Neutralize("BANANAS!!!"))8    fmt.Println(targets.Neutralize("BANANAS!!!!"))9    fmt.Println(targets.Neutralize("BANANAS!!!!!"))10    fmt.Println(targets.Neutralize("BANANAS!!!!!!"))11    fmt.Println(targets.Neutralize("BANANAS!!!!!!!")

Neutralize

Using AI Code Generation

1import (2func main() {3	fmt.Println(targets.Neutralize("Hello World"))4}5func Neutralize(s string) string {6}7import (8func TestNeutralize(t *testing.T) {9	s := Neutralize("Hello World")10	if s != "Hello World" {11		t.Error("Expected Hello World, got ", s)12	}13}14import (15func TestNeutralize(t *testing.T) {16	s := Neutralize("Hello World")17	if s != "Hello World" {18		t.Error("Expected Hello World, got ", s)19	}20	s = Neutralize("Hello World")21	if s != "Hello World!" {22		t.Error("Expected Hello World!, got ", s)23	}24}25--- FAIL: TestNeutralize (0.00s)26func Neutralize(s string) string {27}

Neutralize

Using AI Code Generation

1import (2func main() {3	fmt.Println("Enter a list of targets")4	fmt.Scanln(&t)5	t.Neutralize()6	fmt.Println(t)7}8import "fmt"9type A struct {10}11func (a *A) f() {12}13func main() {14    a := A{x: 1}15    fmt.Println(a.x)16    a.f()17    fmt.Println(a.x)18}19import "fmt"20type A struct {21}22func (a A) f() {23}24func main() {25    a := A{x: 1}26    fmt.Println(a.x)27    a.f()28    fmt.Println(a.x)29}30import "fmt"31type A struct {32}33func (a *A) f() {34}

Neutralize

Using AI Code Generation

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

Neutralize

Using AI Code Generation

1import (2func main() {3	targets.Neutralize()4	fmt.Println("Hacked!")5}6import "fmt"7type targets struct{}8func (t *targets) Neutralize() {9	fmt.Println("Neutralized!")10}11func Neutralize() {12	t := targets{}13	t.Neutralize()14}15./2.go:9: cannot use t (type targets) as type *targets in argument to t.Neutralize:16targets does not implement *targets (Neutralize method has pointer receiver)17import "fmt"18type targets struct{}19func (t targets) Neutralize() {20	fmt.Println("Neutralized!")21}22func Neutralize() {23	t := targets{}24	t.Neutralize()25}26import "fmt"27type targets struct{}28func (t *targets) Neutralize() {29	fmt.Println("Neutralized!")30}31func Neutralize() {32	t := &targets{}33	t.Neutralize()34}

Neutralize

Using AI Code Generation

1import (2func main() {3	t := targets.Target{Name: "Earth"}4	fmt.Println(t)5	t.Neutralize()6	fmt.Println(t)7}8import "fmt"9type Target struct {10}11func (t *Target) Neutralize() {12	fmt.Printf("Neutralizing target %s13}14import "testing"15func TestTarget(t *testing.T) {16	tgt := Target{Name: "Earth"}17	t.Logf("Target is %v18	tgt.Neutralize()19	t.Logf("Target is %v20}21{Earth}22{}23--- PASS: TestTarget (0.00s)24    targets_test.go:13: Target is {Earth}25    targets_test.go:21: Target is {}

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