Predator and CL could not provide any possible suspects.

Using Code Search for the file, "web_view_impl.cc" suspecting the below Cl might have caused this issue

Suspect CL: https://chromium.googlesource.com/chromium/src/+/4b494160abc4a0d39170a8dac94e3cbb9873719b

danakj@ -- Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Thanks!

ClusterFuzz has detected this issue as fixed in range 607776:607783.

Detailed report: https://clusterfuzz.com/testcase?key=5951715238739968

Fuzzer: puzzor
Job Type: linux_ubsan_vptr_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::WebViewImpl::GetURLForDebugTrace
  blink::WebViewImpl::GetURLForDebugTrace
  content::RenderWidget::RequestNewLayerTreeFrameSink
  
Sanitizer: undefined (UBSAN)

Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=607776:607783

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5951715238739968

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 5951715238739968 is verified as fixed, so closing issue as verified.

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