func (mgr *Manager) httpCover(w http.ResponseWriter, r *http.Request) {
mgr.mu.Lock()
defer mgr.mu.Unlock()
var cov cover.Cover
call := r.FormValue("call")
unique := r.FormValue("unique") != "" && call != ""
perCall := false
if n, err := strconv.Atoi(call); err == nil && n < len(mgr.corpus) {
cov = mgr.corpus[n].Cover
} else {
perCall = true
for _, inp := range mgr.corpus {
if call == "" || call == inp.Call {
cov = cover.Union(cov, cover.Cover(inp.Cover))
}
}
}
if unique {
cov = cover.Intersection(cov, mgr.uniqueCover(perCall))
}
if err := generateCoverHtml(w, mgr.cfg.Vmlinux, cov); err != nil {
http.Error(w, fmt.Sprintf("failed to generate coverage profile: %v", err), http.StatusInternalServerError)
return
}
runtime.GC()
}
func (mgr *Manager) httpInfo(w http.ResponseWriter, r *http.Request) {
mgr.mu.Lock()
defer mgr.mu.Unlock()
uptime := time.Since(mgr.startTime)
data := &UIData{
CorpusSize: len(mgr.corpus),
TriageQueue: len(mgr.candidates),
Uptime: fmt.Sprintf("%v", uptime),
}
type CallCov struct {
count int
cov cover.Cover
}
calls := make(map[string]*CallCov)
for _, inp := range mgr.corpus {
if calls[inp.Call] == nil {
calls[inp.Call] = new(CallCov)
}
cc := calls[inp.Call]
cc.count++
cc.cov = cover.Union(cc.cov, cover.Cover(inp.Cover))
data.CorpusCoverMem += len(inp.Cover) * int(unsafe.Sizeof(inp.Cover[0]))
}
for _, cov := range mgr.corpusCover {
data.CallCoverMem += len(cov) * int(unsafe.Sizeof(cov[0]))
}
secs := uint64(uptime) / 1e9
for k, v := range mgr.stats {
val := ""
if x := v / secs; x >= 10 {
val = fmt.Sprintf("%v/sec", x)
} else if x := v * 60 / secs; x >= 10 {
val = fmt.Sprintf("%v/min", x)
} else {
x := v * 60 * 60 / secs
val = fmt.Sprintf("%v/hour", x)
}
data.Stats = append(data.Stats, UIStat{Name: k, Value: val})
}
sort.Sort(UIStatArray(data.Stats))
var cov cover.Cover
for c, cc := range calls {
cov = cover.Union(cov, cc.cov)
data.Calls = append(data.Calls, UICallType{c, cc.count, len(cc.cov)})
}
sort.Sort(UICallTypeArray(data.Calls))
data.CoverSize = len(cov)
if err := htmlTemplate.Execute(w, data); err != nil {
http.Error(w, fmt.Sprintf("failed to execute template: %v", err), http.StatusInternalServerError)
}
}
func execute1(env *ipc.Env, p *prog.Prog, stat *uint64) []cover.Cover {
if *flagSaveProg {
f, err := os.Create(fmt.Sprintf("%v.prog", *flagName))
if err == nil {
f.Write(p.Serialize())
f.Close()
}
} else {
// The following output helps to understand what program crashed kernel.
// It must not be intermixed.
logMu.Lock()
log.Printf("executing program:\n%s", p.Serialize())
logMu.Unlock()
}
try := 0
retry:
*stat++
output, strace, rawCover, failed, hanged, err := env.Exec(p)
if err != nil {
if try > 10 {
panic(err)
}
try++
debug.FreeOSMemory()
time.Sleep(time.Second)
goto retry
}
logf(4, "result failed=%v hanged=%v:\n%v\n", failed, hanged, string(output))
if len(strace) != 0 {
logf(4, "strace:\n%s\n", strace)
}
cov := make([]cover.Cover, len(p.Calls))
for i, c := range rawCover {
cov[i] = cover.Cover(c)
}
return cov
}
func (mgr *Manager) httpInfo(w http.ResponseWriter, r *http.Request) {
mgr.mu.Lock()
defer mgr.mu.Unlock()
type CallCov struct {
count int
cov cover.Cover
}
calls := make(map[string]*CallCov)
for _, inp := range mgr.corpus {
if calls[inp.Call] == nil {
calls[inp.Call] = new(CallCov)
}
cc := calls[inp.Call]
cc.count++
cc.cov = cover.Union(cc.cov, cover.Cover(inp.Cover))
}
data := &UIData{
Name: mgr.cfg.Name,
MasterHttp: mgr.masterHttp,
MasterCorpusSize: len(mgr.masterCorpus),
CorpusSize: len(mgr.corpus),
}
var cov cover.Cover
for c, cc := range calls {
cov = cover.Union(cov, cc.cov)
data.Calls = append(data.Calls, UICallType{c, cc.count, len(cc.cov)})
}
sort.Sort(UICallTypeArray(data.Calls))
data.CoverSize = len(cov)
if err := htmlTemplate.Execute(w, data); err != nil {
http.Error(w, fmt.Sprintf("failed to execute template: %v", err), http.StatusInternalServerError)
}
}
func execute1(pid int, env *ipc.Env, p *prog.Prog, stat *uint64) []cover.Cover {
if false {
// For debugging, this function must not be executed with locks held.
corpusMu.Lock()
corpusMu.Unlock()
coverMu.Lock()
coverMu.Unlock()
triageMu.Lock()
triageMu.Unlock()
}
// Limit concurrency window and do leak checking once in a while.
idx := gate.Enter()
defer gate.Leave(idx, func() {
if idx == 0 && *flagLeak && atomic.LoadUint32(&allTriaged) != 0 {
// Scan for leaks once in a while (it is damn slow).
kmemleakScan(true)
}
})
// The following output helps to understand what program crashed kernel.
// It must not be intermixed.
switch *flagOutput {
case "none":
// This case intentionally left blank.
case "stdout":
data := p.Serialize()
logMu.Lock()
log.Printf("executing program %v:\n%s", pid, data)
logMu.Unlock()
case "dmesg":
fd, err := syscall.Open("/dev/kmsg", syscall.O_WRONLY, 0)
if err == nil {
buf := new(bytes.Buffer)
fmt.Fprintf(buf, "syzkaller: executing program %v:\n%s", pid, p.Serialize())
syscall.Write(fd, buf.Bytes())
syscall.Close(fd)
}
case "file":
f, err := os.Create(fmt.Sprintf("%v-%v.prog", *flagName, pid))
if err == nil {
f.Write(p.Serialize())
f.Close()
}
}
try := 0
retry:
atomic.AddUint64(stat, 1)
output, rawCover, errnos, failed, hanged, err := env.Exec(p)
_ = errnos
if failed {
// BUG in output should be recognized by manager.
logf(0, "BUG: executor-detected bug:\n%s", output)
// Don't return any cover so that the input is not added to corpus.
return make([]cover.Cover, len(p.Calls))
}
if err != nil {
if try > 10 {
panic(err)
}
try++
debug.FreeOSMemory()
time.Sleep(time.Second)
goto retry
}
logf(4, "result failed=%v hanged=%v:\n%v\n", failed, hanged, string(output))
cov := make([]cover.Cover, len(p.Calls))
for i, c := range rawCover {
cov[i] = cover.Cover(c)
}
return cov
}
func (mgr *Manager) httpSummary(w http.ResponseWriter, r *http.Request) {
mgr.mu.Lock()
defer mgr.mu.Unlock()
data := &UISummaryData{
Name: mgr.cfg.Name,
}
data.Stats = append(data.Stats, UIStat{Name: "uptime", Value: fmt.Sprint(time.Since(mgr.startTime) / 1e9 * 1e9)})
data.Stats = append(data.Stats, UIStat{Name: "corpus", Value: fmt.Sprint(len(mgr.corpus))})
data.Stats = append(data.Stats, UIStat{Name: "triage queue", Value: fmt.Sprint(len(mgr.candidates))})
var err error
if data.Crashes, err = mgr.collectCrashes(); err != nil {
http.Error(w, fmt.Sprintf("failed to collect crashes: %v", err), http.StatusInternalServerError)
return
}
type CallCov struct {
count int
cov cover.Cover
}
calls := make(map[string]*CallCov)
for _, inp := range mgr.corpus {
if calls[inp.Call] == nil {
calls[inp.Call] = new(CallCov)
}
cc := calls[inp.Call]
cc.count++
cc.cov = cover.Union(cc.cov, cover.Cover(inp.Cover))
}
secs := uint64(1)
if !mgr.firstConnect.IsZero() {
secs = uint64(time.Since(mgr.firstConnect))/1e9 + 1
}
var cov cover.Cover
totalUnique := mgr.uniqueCover(true)
for c, cc := range calls {
cov = cover.Union(cov, cc.cov)
unique := cover.Intersection(cc.cov, totalUnique)
data.Calls = append(data.Calls, UICallType{
Name: c,
Inputs: cc.count,
Cover: len(cc.cov),
UniqueCover: len(unique),
})
}
sort.Sort(UICallTypeArray(data.Calls))
data.Stats = append(data.Stats, UIStat{Name: "cover", Value: fmt.Sprint(len(cov)), Link: "/cover"})
var intStats []UIStat
for k, v := range mgr.stats {
val := fmt.Sprintf("%v", v)
if x := v / secs; x >= 10 {
val += fmt.Sprintf(" (%v/sec)", x)
} else if x := v * 60 / secs; x >= 10 {
val += fmt.Sprintf(" (%v/min)", x)
} else {
x := v * 60 * 60 / secs
val += fmt.Sprintf(" (%v/hour)", x)
}
intStats = append(intStats, UIStat{Name: k, Value: val})
}
sort.Sort(UIStatArray(intStats))
data.Stats = append(data.Stats, intStats...)
data.Log = CachedLogOutput()
if err := summaryTemplate.Execute(w, data); err != nil {
http.Error(w, fmt.Sprintf("failed to execute template: %v", err), http.StatusInternalServerError)
return
}
}