Predator and CL did not provide any possible suspects.
Assigning to the concern owner who worked on brotli fuzzer.

@eustas -- Could you please look into the issue, kindly re-assign if this is not related to your changes.
Thank You.

Fixed in upstream. Going to pull to chromium soon.

https://github.com/google/brotli/pull/522

https://codereview.chromium.org/2748323002/

Waiting for clusterfuzz reaction.

ClusterFuzz has detected this issue as fixed in range 457369:457386.

Detailed report: https://clusterfuzz.com/testcase?key=5619712366215168

Fuzzer: libfuzzer_brotli_fuzzer
Job Type: libfuzzer_chrome_msan
Platform Id: linux

Crash Type: Timeout (exceeds 25 secs)
Crash Address: 
Crash State:
  brotli_fuzzer
  
Sanitizer: memory (MSAN)

Regressed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=395689:395794
Fixed: https://clusterfuzz.com/revisions?job=libfuzzer_chrome_msan&range=457369:457386

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv97kuDgzaRLbpnG3cSGnkfezhUcZ4YcFPgvHFIz_lW5XLlnek749lypTdNIFOjyoG-32bKkv9kIHuF-f5Imm2S3BA4xRLeZUJEvJNwxmznbw4EjXIkNKwL6N4RPgpyH7Up1KBdOSfk8YO1l6jB_UXVRVsU6CkE3WbCAXyGPWazFRG4RVxC_hGXFXMQqJk7kM4OlcSJC8AGfs59sWdEojFxvtQ39zMl_S36zAmX76vXmnNyW1unI3RRr9ctHpNTP7_HMwyKMW6mkSE0yLuD5cxgjkWM7fDxfSwM9ZAR9u6Mb3ZPuyoHR9_s2V135gBF3k8NTieBOSZ7sW2ZAbtKNbbivFHl553LNadR9eUdUo8-sI9vk5jgA?testcase_id=5619712366215168


See https://chromium.googlesource.com/chromium/src/+/master/testing/libfuzzer/reproducing.md for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.