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Explicitly limit the fuzzer input length

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This is to avoid timeouts in oss-fuzz.
This commit is contained in:
Julien Cretin
2021-08-05 13:37:51 +02:00
committed by Julien Cretin
parent b7a3e06cf4
commit 445c1c6edd
1 changed files with 8 additions and 1 deletions
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9
libraries/persistent_store/fuzz/src/store.rs
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@@ -33,7 +33,14 @@ use std::convert::TryInto;
/// ///
/// The entropy to generate the sequence of manipulation should be provided in `data`. Debugging /// The entropy to generate the sequence of manipulation should be provided in `data`. Debugging
/// information is printed if `debug` is set. Statistics are gathered if `stats` is set. /// information is printed if `debug` is set. Statistics are gathered if `stats` is set.
pub fn fuzz(data: &[u8], debug: bool, stats: Option<&mut Stats>) { pub fn fuzz(mut data: &[u8], debug: bool, stats: Option<&mut Stats>) {
// We limit the input size to avoid timeouts in oss-fuzz because they use inputs of arbitrary
// length and timeout after 1 minute. By default, libFuzzer has a maximum length of 4096 bytes.
// So we just use some number above 4096 bytes and below 1 minute (might need adjustments).
const MAX_DATA_LEN: usize = 10000;
if data.len() > MAX_DATA_LEN {
data = &data[..MAX_DATA_LEN];
}
let mut fuzzer = Fuzzer::new(data, debug, stats); let mut fuzzer = Fuzzer::new(data, debug, stats);
let mut driver = fuzzer.init(); let mut driver = fuzzer.init();
let store = loop { let store = loop {