This issue looks similar to  bug 817590  , hence assigning to yukishiino@ for more updates on it.

yukishiino@ This issue is observed on Mac OS as well, could you please take a look in to this issue. 

Thanks!

This is a different issue.

https://cs.chromium.org/chromium/src/third_party/blink/renderer/modules/speech/speech_synthesis.cc?rcl=c4cc664f3fcdd7378632b4b1754fd7198a030e1e&l=96

SpeechSynthesis::speak seems causing OOM.  Should be triaged in Blink>Speech.

ClusterFuzz has detected this issue as fixed in range 580081:580082.

Detailed report: https://clusterfuzz.com/testcase?key=6279977373532160

Fuzzer: inferno_twister
Job Type: mac_asan_chrome
Platform Id: mac

Crash Type: CHECK failure
Crash Address: 
Crash State:
  count <= MaxElementCountInBackingStore<T>() in HeapAllocator.h
  unsigned long blink::HeapAllocator::QuantizedSize<blink::Member<blink::SpeechSyn
  blink::SpeechSynthesis::speak
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=447465:447478
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=580081:580082

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6279977373532160

See https://github.com/google/clusterfuzz-tools for more information.

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

ClusterFuzz testcase 6279977373532160 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.