Abhishek Arya

in local development, zip uploads are broken

12

``` | File "/build/clusterfuzz/src/appengine/handlers/jobs.py", line 132, in post | blob_info = self.get_upload() | File "/build/clusterfuzz/src/appengine/handlers/base_handler.py", line 317, in get_upload | blob_info = storage.GcsBlobInfo.from_key(upload_key) | File "/build/clusterfuzz/src/python/google_cloud_utils/storage.py", line 556, in from_key...

https://cloud.google.com/compute/docs/eol/ubuntu1604

Dynamic timeouts for engine based fuzzers, also analyze_task timeout should be higher (not 25 sec)

2

Three bugs here: 1. Too low timeout in google instance template. Now increased to 90 secs. 2. Fix timeout argument during reproduction (upload testcases are not impacted as they dont...

Regarding fuzzing integration with OSS-Fuzz

1

Hello Ultrajson maintainers, We have integrated Ultrajson [https://github.com/google/oss-fuzz/tree/master/projects/ujson] as a first example of our python fuzzing support in our OSS-Fuzz platform [https://google.github.io/oss-fuzz/getting-started/new-project-guide/python-lang/]. OSS-Fuzz is a free service from Google and...

libFuzzer, entropic patch.diff is causing crashes on "No such file or directory" when provided with seed inputs

11

E.g. run `make run-libfuzzer-matio_matio_fuzzer` You will see a crash ``` 8851: cov: 137 ft: 190 corp: 38 exec/s 110 oom/timeout/crash: 7/0/0 time: 36s job: 8 dft_time: 0 No such file...

Discussion for OSS-Fuzz saturated corpus experiment

1

Experiment: https://www.fuzzbench.com/reports/2020-10-11-saturated-ossfuzz-corpus/index.html OSS-Fuzz corpora used: gs://fuzzbench-data/2020-10-11-ossfuzzc/oss_fuzz_corpora

Differential edge/region hit frequency between fuzzers AND visualization similar to cookie_dough

25

@eqv's idea Either 1: Capture a sample of inputs generated during fuzzing and then store path/state transitions that happen. 2. Capture path/state transitions in real-time (without slowing things).

Aggregate log plots for coverage growth.

1

Idea from Marcel

preemptible_runners should be true by default

1

Once preemptibles functionality is stablized, need to turn them off by default. Other users shouldn't pay more if they can't find this setting.