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syz-manager: add detailed coverage logging

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Originally, syz-manager confusingly logs corpusSignal as "cover".
Change syz-manager's logging to output corpusSignal, corpusCover
and maxSignal.
Add a field in Stats to store maxSignal.
This commit is contained in:
Daimeng Wang 2020-05-28 16:13:23 -07:00 committed by Dmitry Vyukov
parent 954bd312f9
commit f7fbb18cba
4 changed files with 9 additions and 3 deletions
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1
CONTRIBUTORS
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@ -58,3 +58,4 @@ Christoph Paasch
Collabora
André Almeida
Dipanjan Das
Daimeng Wang

8
syz-manager/manager.go
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@ -215,13 +215,15 @@ func RunManager(cfg *mgrconfig.Config, target *prog.Target, sysTarget *targets.T
mgr.fuzzingTime += diff * time.Duration(atomic.LoadUint32(&mgr.numFuzzing))
executed := mgr.stats.execTotal.get()
crashes := mgr.stats.crashes.get()
signal := mgr.stats.corpusSignal.get()
corpusCover := mgr.stats.corpusCover.get()
corpusSignal := mgr.stats.corpusSignal.get()
maxSignal := mgr.stats.maxSignal.get()
mgr.mu.Unlock()
numReproducing := atomic.LoadUint32(&mgr.numReproducing)
numFuzzing := atomic.LoadUint32(&mgr.numFuzzing)
log.Logf(0, "VMs %v, executed %v, cover %v, crashes %v, repro %v",
numFuzzing, executed, signal, crashes, numReproducing)
log.Logf(0, "VMs %v, executed %v, corpus cover %v, corpus signal %v, max signal %v, crashes %v, repro %v",
numFuzzing, executed, corpusCover, corpusSignal, maxSignal, crashes, numReproducing)
}
}()

1
syz-manager/rpc.go
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@ -270,6 +270,7 @@ func (serv *RPCServer) Poll(a *rpctype.PollArgs, r *rpctype.PollRes) error {
newMaxSignal := serv.maxSignal.Diff(a.MaxSignal.Deserialize())
if !newMaxSignal.Empty() {
serv.maxSignal.Merge(newMaxSignal)
serv.stats.maxSignal.set(len(serv.maxSignal))
for _, f1 := range serv.fuzzers {
if f1 == f {
continue

2
syz-manager/stats.go
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@ -27,6 +27,7 @@ type Stats struct {
hubRecvReproDrop Stat
corpusCover Stat
corpusSignal Stat
maxSignal Stat
mu sync.Mutex
namedStats map[string]uint64
@ -44,6 +45,7 @@ func (stats *Stats) all() map[string]uint64 {
"exec total": stats.execTotal.get(),
"cover": stats.corpusCover.get(),
"signal": stats.corpusSignal.get(),
"max signal": stats.maxSignal.get(),
}
if stats.haveHub {
m["hub: send prog add"] = stats.hubSendProgAdd.get()