#include "FuzzerInternal.h"
#include <sanitizer/coverage_interface.h>
#include <algorithm>
-#include <iostream>
namespace fuzzer {
+static const size_t kMaxUnitSizeToPrint = 4096;
// Only one Fuzzer per process.
static Fuzzer *F;
} else {
auto T = SubstituteTokens(U);
T.push_back(0);
- std::cerr << T.data();
- std::cerr << PrintAfter;
+ Printf("%s%s", T.data(), PrintAfter);
}
}
}
void Fuzzer::DeathCallback() {
- std::cerr << "DEATH: " << std::endl;
+ Printf("DEATH:\n");
Print(CurrentUnit, "\n");
PrintUnitInASCIIOrTokens(CurrentUnit, "\n");
- WriteToCrash(CurrentUnit, "crash-");
+ WriteUnitToFileWithPrefix(CurrentUnit, "crash-");
}
void Fuzzer::StaticAlarmCallback() {
duration_cast<seconds>(system_clock::now() - UnitStartTime).count();
if (Seconds == 0) return;
if (Options.Verbosity >= 2)
- std::cerr << "AlarmCallback " << Seconds << "\n";
+ Printf("AlarmCallback %zd\n", Seconds);
if (Seconds >= (size_t)Options.UnitTimeoutSec) {
- std::cerr << "ALARM: working on the last Unit for " << Seconds << " seconds"
- << std::endl;
- Print(CurrentUnit, "\n");
+ Printf("ALARM: working on the last Unit for %zd seconds\n", Seconds);
+ Printf(" and the timeout value is %d (use -timeout=N to change)\n",
+ Options.UnitTimeoutSec);
+ if (CurrentUnit.size() <= kMaxUnitSizeToPrint)
+ Print(CurrentUnit, "\n");
PrintUnitInASCIIOrTokens(CurrentUnit, "\n");
- WriteToCrash(CurrentUnit, "timeout-");
+ WriteUnitToFileWithPrefix(CurrentUnit, "timeout-");
exit(1);
}
}
if (!Options.Verbosity) return;
size_t Seconds = secondsSinceProcessStartUp();
size_t ExecPerSec = (Seconds ? TotalNumberOfRuns / Seconds : 0);
- std::cerr
- << "#" << TotalNumberOfRuns
- << "\t" << Where
- << " cov " << Cov
- << " bits " << TotalBits()
- << " units " << Corpus.size()
- << " exec/s " << ExecPerSec
- << End;
+ Printf("#%zd\t%s cov: %zd bits: %zd units: %zd exec/s: %zd",
+ TotalNumberOfRuns, Where, Cov, TotalBits(), Corpus.size(), ExecPerSec);
+ if (TotalNumberOfExecutedTraceBasedMutations)
+ Printf(" tbm: %zd", TotalNumberOfExecutedTraceBasedMutations);
+ Printf("%s", End);
}
void Fuzzer::RereadOutputCorpus() {
}
if (!Options.Reload) return;
if (Options.Verbosity >= 2)
- std::cerr << "Reload: read " << AdditionalCorpus.size() << " new units.\n";
+ Printf("Reload: read %zd new units.\n", AdditionalCorpus.size());
for (auto &X : AdditionalCorpus) {
if (X.size() > (size_t)Options.MaxLen)
X.resize(Options.MaxLen);
void Fuzzer::ShuffleAndMinimize() {
size_t MaxCov = 0;
- bool PreferSmall =
- (Options.PreferSmallDuringInitialShuffle == 1 ||
- (Options.PreferSmallDuringInitialShuffle == -1 && rand() % 2));
+ bool PreferSmall = (Options.PreferSmallDuringInitialShuffle == 1 ||
+ (Options.PreferSmallDuringInitialShuffle == -1 &&
+ USF.GetRand().RandBool()));
if (Options.Verbosity)
- std::cerr << "PreferSmall: " << PreferSmall << "\n";
+ Printf("PreferSmall: %d\n", PreferSmall);
PrintStats("READ ", 0);
std::vector<Unit> NewCorpus;
- std::random_shuffle(Corpus.begin(), Corpus.end());
+ std::random_shuffle(Corpus.begin(), Corpus.end(), USF.GetRand());
if (PreferSmall)
std::stable_sort(
Corpus.begin(), Corpus.end(),
U.clear();
size_t Last = std::min(First + Options.MaxLen, C.size());
U.insert(U.begin(), C.begin() + First, C.begin() + Last);
+ if (Options.OnlyASCII)
+ ToASCII(U);
size_t NewCoverage = RunOne(U);
if (NewCoverage) {
MaxCov = NewCoverage;
NewCorpus.push_back(U);
if (Options.Verbosity >= 2)
- std::cerr << "NEW0: " << NewCoverage
- << " L " << U.size()
- << "\n";
+ Printf("NEW0: %zd L %zd\n", NewCoverage, U.size());
}
}
}
auto UnitStopTime = system_clock::now();
auto TimeOfUnit =
duration_cast<seconds>(UnitStopTime - UnitStartTime).count();
- if (TimeOfUnit > TimeOfLongestUnitInSeconds) {
+ if (TimeOfUnit > TimeOfLongestUnitInSeconds &&
+ TimeOfUnit >= Options.ReportSlowUnits) {
TimeOfLongestUnitInSeconds = TimeOfUnit;
- std::cerr << "Longest unit: " << TimeOfLongestUnitInSeconds
- << " s:\n";
- Print(U, "\n");
+ Printf("Slowest unit: %zd s:\n", TimeOfLongestUnitInSeconds);
+ if (U.size() <= kMaxUnitSizeToPrint)
+ Print(U, "\n");
+ WriteUnitToFileWithPrefix(U, "slow-unit-");
}
return Res;
}
-void Fuzzer::RunOneAndUpdateCorpus(const Unit &U) {
+void Fuzzer::RunOneAndUpdateCorpus(Unit &U) {
if (TotalNumberOfRuns >= Options.MaxNumberOfRuns)
return;
+ if (Options.OnlyASCII)
+ ToASCII(U);
ReportNewCoverage(RunOne(U), U);
}
std::string Path = DirPlusFile(Options.OutputCorpus, Hash(U));
WriteToFile(U, Path);
if (Options.Verbosity >= 2)
- std::cerr << "Written to " << Path << std::endl;
+ Printf("Written to %s\n", Path.c_str());
+ assert(!Options.OnlyASCII || IsASCII(U));
}
-void Fuzzer::WriteToCrash(const Unit &U, const char *Prefix) {
+void Fuzzer::WriteUnitToFileWithPrefix(const Unit &U, const char *Prefix) {
std::string Path = Prefix + Hash(U);
WriteToFile(U, Path);
- std::cerr << "CRASHED; file written to " << Path << std::endl;
- std::cerr << "Base64: ";
- PrintFileAsBase64(Path);
+ Printf("Test unit written to %s\n", Path.c_str());
+ if (U.size() <= kMaxUnitSizeToPrint) {
+ Printf("Base64: ");
+ PrintFileAsBase64(Path);
+ }
}
void Fuzzer::SaveCorpus() {
for (const auto &U : Corpus)
WriteToFile(U, DirPlusFile(Options.OutputCorpus, Hash(U)));
if (Options.Verbosity)
- std::cerr << "Written corpus of " << Corpus.size() << " files to "
- << Options.OutputCorpus << "\n";
+ Printf("Written corpus of %zd files to %s\n", Corpus.size(),
+ Options.OutputCorpus.c_str());
}
void Fuzzer::ReportNewCoverage(size_t NewCoverage, const Unit &U) {
UnitHashesAddedToCorpus.insert(Hash(U));
PrintStats("NEW ", NewCoverage, "");
if (Options.Verbosity) {
- std::cerr << " L: " << U.size();
+ Printf(" L: %zd", U.size());
if (U.size() < 30) {
- std::cerr << " ";
+ Printf(" ");
PrintUnitInASCIIOrTokens(U, "\t");
Print(U);
}
- std::cerr << "\n";
+ Printf("\n");
}
WriteToOutputCorpus(U);
if (Options.ExitOnFirst)
size_t Size = U->size();
U->resize(Options.MaxLen);
size_t NewSize = USF.Mutate(U->data(), Size, U->size());
- assert(NewSize > 0 && NewSize <= Options.MaxLen);
+ assert(NewSize > 0 && "Mutator returned empty unit");
+ assert(NewSize <= (size_t)Options.MaxLen &&
+ "Mutator return overisized unit");
U->resize(NewSize);
RunOneAndUpdateCorpus(*U);
size_t NumTraceBasedMutations = StopTraceRecording();
- for (size_t j = 0; j < NumTraceBasedMutations; j++) {
- ApplyTraceBasedMutation(j, U);
- RunOneAndUpdateCorpus(*U);
+ size_t TBMWidth =
+ std::min((size_t)Options.TBMWidth, NumTraceBasedMutations);
+ size_t TBMDepth =
+ std::min((size_t)Options.TBMDepth, NumTraceBasedMutations);
+ Unit BackUp = *U;
+ for (size_t w = 0; w < TBMWidth; w++) {
+ *U = BackUp;
+ for (size_t d = 0; d < TBMDepth; d++) {
+ TotalNumberOfExecutedTraceBasedMutations++;
+ ApplyTraceBasedMutation(USF.GetRand()(NumTraceBasedMutations), U);
+ RunOneAndUpdateCorpus(*U);
+ }
}
}
}
void Fuzzer::Loop(size_t NumIterations) {
+ for (auto &U: Options.Dictionary)
+ USF.GetMD().AddWordToDictionary(U.data(), U.size());
+
for (size_t i = 1; i <= NumIterations; i++) {
for (size_t J1 = 0; J1 < Corpus.size(); J1++) {
SyncCorpus();
CurrentUnit = Corpus[J1];
MutateAndTestOne(&CurrentUnit);
// Now, cross with others.
- if (Options.DoCrossOver) {
+ if (Options.DoCrossOver && !Corpus[J1].empty()) {
for (size_t J2 = 0; J2 < Corpus.size(); J2++) {
CurrentUnit.resize(Options.MaxLen);
size_t NewSize = USF.CrossOver(
Corpus[J1].data(), Corpus[J1].size(), Corpus[J2].data(),
Corpus[J2].size(), CurrentUnit.data(), CurrentUnit.size());
- assert(NewSize > 0 && NewSize <= Options.MaxLen);
+ assert(NewSize > 0 && "CrossOver returned empty unit");
+ assert(NewSize <= (size_t)Options.MaxLen &&
+ "CrossOver return overisized unit");
CurrentUnit.resize(NewSize);
MutateAndTestOne(&CurrentUnit);
}
projects / oota-llvm.git / blobdiff