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Differential D4578

[test] Speed up fuzzing by ~200x when using afl-fuzz
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Authored by Fabien on Nov 29 2019, 13:21.

Details

Reviewers
deadalnix
Group Reviewers
Restricted Project
Commits
rSTAGING6cec48af5cc3: [test] Speed up fuzzing by ~200x when using afl-fuzz
rABC6cec48af5cc3: [test] Speed up fuzzing by ~200x when using afl-fuzz
Summary
Enable the `afl-clang-fast++` features deferred forkserver
(`__AFL_INIT`) and persistent mode (`__AFL_LOOP(1000)`).

Backport of core PR10415:
https://github.com/bitcoin/bitcoin/pull/10415/files

Test Plan

Follow the fuzzing.md to run the fuzzer.
Check that the performance are improved by using afl-clang-fast.
My numbers:

  • Before: ~60/s
  • After: ~7300/s

Diff Detail

Repository
rABC Bitcoin ABC
Branch
PR10415
Lint
Lint Passed
Unit
No Test Coverage
Build Status
Buildable 8330
Build 14679: Default Diff Build & Tests
Build 14678: arc lint + arc unit

Event Timeline

Fabien created this revision.Nov 29 2019, 13:21
Herald added a reviewer: Restricted Project. · View Herald TranscriptNov 29 2019, 13:21
Herald added a reviewer: deadalnix. · View Herald Transcript
teamcity added a comment.Nov 29 2019, 13:21

Build Bitcoin-ABC / Diffs / Diff Testing started.

teamcity added a comment.Nov 29 2019, 13:31

Build Bitcoin-ABC / Diffs / Diff Testing passed.

Harbormaster completed remote builds in B8330: Diff 14498.Nov 29 2019, 13:31
Fabien mentioned this in D4579: [CMAKE] Build test_bitcoin_fuzzy.Nov 29 2019, 13:32
deadalnix accepted this revision.Nov 29 2019, 14:06
This revision is now accepted and ready to land.Nov 29 2019, 14:06
Closed by commit rABC6cec48af5cc3: [test] Speed up fuzzing by ~200x when using afl-fuzz (authored by practicalswift <practicalswift@users.noreply.github.com>, committed by Fabien). · Explain WhyNov 29 2019, 14:16
This revision was automatically updated to reflect the committed changes.
Fabien mentioned this in rABCbdfa82d939e6: [CMAKE] Build test_bitcoin_fuzzy.
Fabien added a commit: rABC6cec48af5cc3: [test] Speed up fuzzing by ~200x when using afl-fuzz.
Fabien added a commit: rSTAGING6cec48af5cc3: [test] Speed up fuzzing by ~200x when using afl-fuzz.Apr 7 2020, 21:54
Fabien mentioned this in rSTAGINGbdfa82d939e6: [CMAKE] Build test_bitcoin_fuzzy.

Revision Contents
Changeset List

PathSize
doc/
8 lines
src/
test/
23 lines

Diff 14498

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doc/fuzzing.md

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src/test/test_bitcoin_fuzzy.cpp

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