How to use testProgs method of repro Package

Best Syzkaller code snippet using repro.testProgs

repro.go

Source:repro.go

...314		return baseDuration + time.Duration((entries/4))*time.Second315	}316	// Bisect the log to find multiple guilty programs.317	entries, err := ctx.bisectProgs(entries, func(progs []*prog.LogEntry) (bool, error) {318		return ctx.testProgs(progs, duration(len(progs)), opts)319	})320	if err != nil {321		return nil, err322	}323	if len(entries) == 0 {324		return nil, nil325	}326	// TODO: Minimize each program before concatenation.327	// TODO: Return multiple programs if concatenation fails.328	ctx.reproLog(3, "bisect: %d programs left: \n\n%s\n", len(entries), encodeEntries(entries))329	ctx.reproLog(3, "bisect: trying to concatenate")330	// Concatenate all programs into one.331	prog := &prog.Prog{332		Target: entries[0].P.Target,333	}334	for _, entry := range entries {335		prog.Calls = append(prog.Calls, entry.P.Calls...)336	}337	dur := duration(len(entries)) * 3 / 2338	// Execute the program without fault injection.339	crashed, err := ctx.testProg(prog, dur, opts)340	if err != nil {341		return nil, err342	}343	if crashed {344		res := &Result{345			Prog:     prog,346			Duration: dur,347			Opts:     opts,348		}349		ctx.reproLog(3, "bisect: concatenation succeeded")350		return res, nil351	}352	// Try with fault injection.353	calls := 0354	for _, entry := range entries {355		if entry.Fault {356			opts.FaultCall = calls + entry.FaultCall357			opts.FaultNth = entry.FaultNth358			if entry.FaultCall < 0 || entry.FaultCall >= len(entry.P.Calls) {359				opts.FaultCall = calls + len(entry.P.Calls) - 1360			}361			crashed, err := ctx.testProg(prog, dur, opts)362			if err != nil {363				return nil, err364			}365			if crashed {366				res := &Result{367					Prog:     prog,368					Duration: dur,369					Opts:     opts,370				}371				ctx.reproLog(3, "bisect: concatenation succeeded with fault injection")372				return res, nil373			}374		}375		calls += len(entry.P.Calls)376	}377	ctx.reproLog(3, "bisect: concatenation failed")378	return nil, nil379}380// Minimize calls and arguments.381func (ctx *context) minimizeProg(res *Result) (*Result, error) {382	ctx.reproLog(2, "minimizing guilty program")383	start := time.Now()384	defer func() {385		ctx.stats.MinimizeProgTime = time.Since(start)386	}()387	call := -1388	if res.Opts.Fault {389		call = res.Opts.FaultCall390	}391	res.Prog, res.Opts.FaultCall = prog.Minimize(res.Prog, call, true,392		func(p1 *prog.Prog, callIndex int) bool {393			crashed, err := ctx.testProg(p1, res.Duration, res.Opts)394			if err != nil {395				ctx.reproLog(0, "minimization failed with %v", err)396				return false397			}398			return crashed399		})400	return res, nil401}402// Simplify repro options (threaded, collide, sandbox, etc).403func (ctx *context) simplifyProg(res *Result) (*Result, error) {404	ctx.reproLog(2, "simplifying guilty program")405	start := time.Now()406	defer func() {407		ctx.stats.SimplifyProgTime = time.Since(start)408	}()409	for _, simplify := range progSimplifies {410		opts := res.Opts411		if simplify(&opts) {412			crashed, err := ctx.testProg(res.Prog, res.Duration, opts)413			if err != nil {414				return nil, err415			}416			if crashed {417				res.Opts = opts418				// Simplification successful, try extracting C repro.419				res, err := ctx.extractC(res)420				if err != nil {421					return nil, err422				}423				if res.CRepro {424					return res, nil425				}426			}427		}428	}429	return res, nil430}431// Try triggering crash with a C reproducer.432func (ctx *context) extractC(res *Result) (*Result, error) {433	ctx.reproLog(2, "extracting C reproducer")434	start := time.Now()435	defer func() {436		ctx.stats.ExtractCTime = time.Since(start)437	}()438	crashed, err := ctx.testCProg(res.Prog, res.Duration, res.Opts)439	if err != nil {440		return nil, err441	}442	res.CRepro = crashed443	return res, nil444}445// Try to simplify the C reproducer.446func (ctx *context) simplifyC(res *Result) (*Result, error) {447	ctx.reproLog(2, "simplifying C reproducer")448	start := time.Now()449	defer func() {450		ctx.stats.SimplifyCTime = time.Since(start)451	}()452	for _, simplify := range cSimplifies {453		opts := res.Opts454		if simplify(&opts) {455			crashed, err := ctx.testCProg(res.Prog, res.Duration, opts)456			if err != nil {457				return nil, err458			}459			if crashed {460				res.Opts = opts461			}462		}463	}464	return res, nil465}466func (ctx *context) testProg(p *prog.Prog, duration time.Duration, opts csource.Options) (crashed bool, err error) {467	entry := prog.LogEntry{P: p}468	if opts.Fault {469		entry.Fault = true470		entry.FaultCall = opts.FaultCall471		entry.FaultNth = opts.FaultNth472	}473	return ctx.testProgs([]*prog.LogEntry{&entry}, duration, opts)474}475func (ctx *context) testProgs(entries []*prog.LogEntry, duration time.Duration, opts csource.Options) (476	crashed bool, err error) {477	inst := <-ctx.instances478	if inst == nil {479		return false, fmt.Errorf("all VMs failed to boot")480	}481	defer ctx.returnInstance(inst)482	if len(entries) == 0 {483		return false, fmt.Errorf("no programs to execute")484	}485	pstr := encodeEntries(entries)486	progFile, err := osutil.WriteTempFile(pstr)487	if err != nil {488		return false, err489	}...

testProgs

Using AI Code Generation

1func testProgs() {2}3func main() {4}5func main() {6}7func testProgs() {

testProgs

Using AI Code Generation

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

testProgs

Using AI Code Generation

1import (2func main() {3}4type Repro struct {5}6func (r *Repro) testProgs() {

testProgs

Using AI Code Generation

1import (2type repro struct {3}4func (r repro) testProgs() string {5	cmd := exec.Command(r.testProgPath)6	out, err := cmd.CombinedOutput()7	if err != nil {8		panic(err)9	}10	return string(out)11}12func main() {13	r := repro{14	}15	output := r.testProgs()16	fmt.Println(output)17	if output == r.expectedOutput {18		fmt.Println("Test Passed!")19	} else {20		fmt.Println("Test Failed!")21	}22}

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