Predator could not provide any possible suspects.

From the below CL observing some changes related to 'GraphicsLayer.cpp' hence suspecting the same
https://chromium.googlesource.com/chromium/src/+log/8f09455de2ae547131c8606018e4b4dcfb5dc691..297ee9e2ac0fea6624373b0a17b7b78a4b08c033?pretty=fuller&n=10000

Suspect CL: https://chromium.googlesource.com/chromium/src/+/297ee9e2ac0fea6624373b0a17b7b78a4b08c033

wangxianzhu@ -- 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 539828:539848.

Detailed report: https://clusterfuzz.com/testcase?key=6234780233105408

Fuzzer: inferno_layout_test_unmodified
Job Type: windows_asan_content_shell
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  blink::LowestCommonAncestor
  blink::PaintChunksToCcLayer::ConvertInto
  blink::GraphicsLayer::PaintContents
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=537371:537402
Fixed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=539828:539848

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6234780233105408

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 6234780233105408 is verified as fixed, so closing issue as verified.

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