ClusterFuzz has detected this issue as fixed in range 616179:616198.

Detailed report: https://clusterfuzz.com/testcase?key=5641610551099392

Fuzzer: attekett_dom_fuzzer
Job Type: mac_asan_chrome
Platform Id: mac

Crash Type: CHECK failure
Crash Address: 
Crash State:
  main_frame_->IsAttached() in page.cc
  blink::Page::RequestBeginMainFrameNotExpected
  blink::scheduler::MainThreadSchedulerImpl::DispatchRequestBeginMainFrameNotExpec
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=589622:589665
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=616179:616198

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5641610551099392

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 5641610551099392 is verified as fixed, so closing issue as verified.

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