reprl-2 - Branch - cloudflare/workerd

Reprl for Fuzzilli fuzzing

#4917Merged

Comparing

reprl-2

(

2c32de2

) with

main

(

2376e81

)

-9%

Regressions: 1

Untouched: 33

Skipped: 9

Benchmarks

Skipped (9)

Failed

Encode_ASCII_256[0/0/256]

unknown_file

Regression

-9%

4.4 ms4.8 ms

Passed

bodyWithHeaders[Response]

src/workerd/tests/bench-response.c++

+2%

23.5 µs23.1 µs

Encode_TwoByte_256[0/2/256]

unknown_file

7 ms7 ms

Encode_OneByte_256[0/1/256]

unknown_file

5.1 ms5.1 ms

request[GlobalScopeBenchmark]

src/workerd/tests/bench-global-scope.c++

52.3 ms52.2 ms

Encode_ASCII_32[0/0/32]

unknown_file

3.1 ms3.1 ms

Encode_TwoByte_1024[0/2/1024]

unknown_file

19.5 ms19.5 ms

Encode_OneByte_1024[0/1/1024]

unknown_file

11.9 ms11.9 ms

Encode_ASCII_1024[0/0/1024]

unknown_file

8.9 ms8.9 ms

Test_JSON_ENC

src/workerd/tests/bench-json.c++

195.8 ms195.8 ms

Encode_TwoByte_8192[0/2/8192]

unknown_file

146.2 ms146.1 ms

Encode_ASCII_8192[0/0/8192]

unknown_file

55.6 ms55.6 ms

EncodeInto_OneByte_8192[1/1/8192]

unknown_file

66.6 ms66.6 ms

constructor[ApiHeaders]

src/workerd/tests/bench-api-headers.c++

91 ms91 ms

Parse[KjHeaders]

src/workerd/tests/bench-kj-headers.c++

44.3 µs44.3 µs

simpleStringBody[Response]

src/workerd/tests/bench-response.c++

20 µs20 µs

nullBodyWithStatus[Response]

src/workerd/tests/bench-response.c++

10.1 µs10.1 µs

Util_RecursivelyFreeze

src/workerd/tests/bench-util.c++

10.8 ms10.8 ms

EncodeInto_OneByte_1024[1/1/1024]

unknown_file

10.4 ms10.4 ms

Test_JSON_DEC

src/workerd/tests/bench-json.c++

3.2 s3.2 s

ParseAndSerialize

Mimetype

70.5 ms70.5 ms

request[RegExpBenchmark]

src/workerd/tests/bench-regex.c++

7.3 ms7.3 ms

set_append[ApiHeaders]

src/workerd/tests/bench-api-headers.c++

15.9 ms15.9 ms

Encode_OneByte_8192[0/1/8192]

unknown_file

84.7 ms84.7 ms

EncodeInto_TwoByte_8192[1/2/8192]

unknown_file

96.7 ms96.7 ms

Serialize

Mimetype

68.5 ms68.5 ms

EncodeInto_ASCII_8192[1/0/8192]

unknown_file

45.8 ms45.8 ms

EncodeInto_TwoByte_1024[1/2/1024]

unknown_file

14.1 ms14.1 ms

EncodeInto_ASCII_1024[1/0/1024]

unknown_file

7.9 ms7.9 ms

arrayBufferBody[Response]

src/workerd/tests/bench-response.c++

16.2 µs16.3 µs

EncodeInto_OneByte_256[1/1/256]

unknown_file

4.5 ms4.5 ms

EncodeInto_ASCII_256[1/0/256]

unknown_file

3.8 ms3.8 ms

EncodeInto_TwoByte_256[1/2/256]

unknown_file

5.4 ms5.4 ms

jsonResponse[Response]

src/workerd/tests/bench-response.c++

-7%

33.6 µs36.3 µs

Commits

Click on a commit to change the comparison range

Base

main

2376e81

-9.25%

Add Fuzzilli REPRL integration for fuzzing support This commit adds comprehensive support for fuzzing workerd using Fuzzilli's REPRL (Read-Eval-Print-Reset-Loop) protocol. Key changes: - Implement REPRL protocol handler in workerd server with --stdin-reprl flag - Add fuzzilli() JavaScript API for crash testing and coverage tracking - Integrate libreprl C library for REPRL client communication - Add KJ-based test framework integration (test-reprl.c++) - Create example Fuzzilli configurations and mock services - Add immediate-crash.h utility for controlled crash testing - Fix V8 ASAN macro redefinition warnings by adding V8_USE_ADDRESS_SANITIZER - Update .bazelrc to use clang-19 directly instead of ccache wrapper The implementation allows Fuzzilli to: - Execute JavaScript code in isolated REPRL sessions - Collect sanitizer coverage feedback - Detect crashes and memory errors - Reset worker state between executions Example usage: bazel test --config=fuzzilli //src/workerd/tests:test-reprl ./workerd test fuzzilli/config.capnp --experimental --stdin-reprl

2c32de2

1 month ago

by mschwarzl

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