plugeth/tests/fuzzers
Martin Holst Swende a81cf0d2b3
trie: remove redundant returns + use stacktrie where applicable (#22760)
* trie: add benchmark for proofless range

* trie: remove unused returns + use stacktrie
2021-04-28 22:47:48 +03:00
..
abi tests/fuzzers/abi: fixed one-off panic with int.Min64 value (#22233) 2021-01-25 21:40:14 +01:00
bitutil tests/fuzzers: fix false positive in bitutil fuzzer (#22076) 2020-12-27 21:58:39 +01:00
bls12381 tests/fuzzers: crypto/bn256 and crypto/bls12381 tests against gnark-crypto (#22755) 2021-04-28 12:04:25 +02:00
bn256 tests/fuzzers: crypto/bn256 and crypto/bls12381 tests against gnark-crypto (#22755) 2021-04-28 12:04:25 +02:00
difficulty consensus/ethash: implement faster difficulty calculators (#21976) 2020-12-11 11:06:44 +01:00
keystore tests/fuzzers: improve the fuzzers (#21829) 2020-11-13 12:36:38 +01:00
les tests/fuzzers: fix goroutine leak in les fuzzer (#22455) 2021-03-16 09:43:33 +01:00
rangeproof trie: remove redundant returns + use stacktrie where applicable (#22760) 2021-04-28 22:47:48 +03:00
rlp tests/fuzzers: improve the fuzzers (#21829) 2020-11-13 12:36:38 +01:00
runtime common,crypto: move fuzzers out of core (#22029) 2020-12-23 17:44:45 +01:00
stacktrie eth/protocols/snap: generate storage trie from full dirty snap data (#22668) 2021-04-27 17:19:59 +03:00
trie trie, tests/fuzzers: implement a stacktrie fuzzer + stacktrie fixes (#21799) 2020-11-09 15:08:12 +01:00
txfetcher tests/fuzzers: improve the fuzzers (#21829) 2020-11-13 12:36:38 +01:00
vflux les, tests: fix les clientpool (#22756) 2021-04-28 14:18:25 +02:00
README.md all: fix typos in comments (#21118) 2020-05-25 10:21:28 +02:00

Fuzzers

To run a fuzzer locally, you need go-fuzz installed.

First build a fuzzing-binary out of the selected package:

(cd ./rlp && CGO_ENABLED=0 go-fuzz-build .)

That command should generate a rlp-fuzz.zip in the rlp/ directory. If you are already in that directory, you can do

[user@work rlp]$ go-fuzz
2019/11/26 13:36:54 workers: 6, corpus: 3 (3s ago), crashers: 0, restarts: 1/0, execs: 0 (0/sec), cover: 0, uptime: 3s
2019/11/26 13:36:57 workers: 6, corpus: 3 (6s ago), crashers: 0, restarts: 1/0, execs: 0 (0/sec), cover: 1054, uptime: 6s
2019/11/26 13:37:00 workers: 6, corpus: 3 (9s ago), crashers: 0, restarts: 1/8358, execs: 25074 (2786/sec), cover: 1054, uptime: 9s
2019/11/26 13:37:03 workers: 6, corpus: 3 (12s ago), crashers: 0, restarts: 1/8497, execs: 50986 (4249/sec), cover: 1054, uptime: 12s
2019/11/26 13:37:06 workers: 6, corpus: 3 (15s ago), crashers: 0, restarts: 1/9330, execs: 74640 (4976/sec), cover: 1054, uptime: 15s
2019/11/26 13:37:09 workers: 6, corpus: 3 (18s ago), crashers: 0, restarts: 1/9948, execs: 99482 (5527/sec), cover: 1054, uptime: 18s
2019/11/26 13:37:12 workers: 6, corpus: 3 (21s ago), crashers: 0, restarts: 1/9428, execs: 122568 (5836/sec), cover: 1054, uptime: 21s
2019/11/26 13:37:15 workers: 6, corpus: 3 (24s ago), crashers: 0, restarts: 1/9676, execs: 145152 (6048/sec), cover: 1054, uptime: 24s
2019/11/26 13:37:18 workers: 6, corpus: 3 (27s ago), crashers: 0, restarts: 1/9855, execs: 167538 (6205/sec), cover: 1054, uptime: 27s
2019/11/26 13:37:21 workers: 6, corpus: 3 (30s ago), crashers: 0, restarts: 1/9645, execs: 192901 (6430/sec), cover: 1054, uptime: 30s
2019/11/26 13:37:24 workers: 6, corpus: 3 (33s ago), crashers: 0, restarts: 1/9967, execs: 219294 (6645/sec), cover: 1054, uptime: 33s

Otherwise:

go-fuzz -bin ./rlp/rlp-fuzz.zip

Notes

Once a 'crasher' is found, the fuzzer tries to avoid reporting the same vector twice, so stores the fault in the suppressions folder. Thus, if you e.g. make changes to fix a bug, you should remove all data from the suppressions-folder, to verify that the issue is indeed resolved.

Also, if you have only one and the same exit-point for multiple different types of test, the suppression can make the fuzzer hide different types of errors. So make sure that each type of failure is unique (for an example, see the rlp fuzzer, where a counter i is used to differentiate between failures:

		if !bytes.Equal(input, output) {
			panic(fmt.Sprintf("case %d: encode-decode is not equal, \ninput : %x\noutput: %x", i, input, output))
		}