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Merge bitcoin/bitcoin#22005: fuzz: Speed up banman fuzz target

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fae0f836be57f466b5df094421c9fbf55fd8a2ed fuzz: Speed up banman fuzz target (MarcoFalke)

Pull request description:

  Hopefully fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34463

ACKs for top commit:
  practicalswift:
    cr ACK fae0f836be57f466b5df094421c9fbf55fd8a2ed: patch looks correct and touches only `src/test/fuzz/banman.cpp`

Tree-SHA512: edbad168c607d09a5f4a29639f2d0b852605dd61403334356ad35a1eac667b6ce3922b1b316fdf37a991195fbc24e947df9e37359231663f8a364e5889e28417
This commit is contained in:
MarcoFalke 2021-06-01 11:31:31 +02:00 committed by UdjinM6
parent 64f05c7941
commit 0e434051e3
1 changed files with 5 additions and 3 deletions
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8
src/test/fuzz/banman.cpp
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@ -31,12 +31,16 @@ void initialize_banman()
FUZZ_TARGET_INIT(banman, initialize_banman)
{
// The complexity is O(N^2), where N is the input size, because each call
// might call DumpBanlist (or other methods that are at least linear
// complexity of the input size).
int limit_max_ops{300};
FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
const fs::path banlist_file = GetDataDir() / "fuzzed_banlist.dat";
fs::remove(banlist_file);
{
BanMan ban_man{banlist_file, nullptr, ConsumeBanTimeOffset(fuzzed_data_provider)};
while (fuzzed_data_provider.ConsumeBool()) {
while (--limit_max_ops >= 0 && fuzzed_data_provider.ConsumeBool()) {
CallOneOf(
fuzzed_data_provider,
[&] {
@ -50,7 +54,6 @@ FUZZ_TARGET_INIT(banman, initialize_banman)
[&] {
ban_man.ClearBanned();
},
[] {},
[&] {
ban_man.IsBanned(ConsumeNetAddr(fuzzed_data_provider));
},
@ -70,7 +73,6 @@ FUZZ_TARGET_INIT(banman, initialize_banman)
[&] {
ban_man.DumpBanlist();
},
[] {},
[&] {
ban_man.Discourage(ConsumeNetAddr(fuzzed_data_provider));
});