Predator and CL could not provide any possible suspects.
Using the code search for the file, LayoutSliderContainer.cpp” assigning to concern owner from GIT revision log.
Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/ed375c02e956ef832e8ed6223435f0d78d6bdf77
@dcheng -- Could you please look into this issue, kindly reassign if it has nothing to do with your changes.
Thank You.

ClusterFuzz has detected this issue as fixed in range 502525:502526.

Detailed report: https://clusterfuzz.com/testcase?key=6009947812003840

Fuzzer: inferno_layout_test_unmodified
Job Type: windows_syzyasan_content_shell
Platform Id: windows

Crash Type: Null-dereference
Crash Address: 0x0000000f
Crash State:
  blink::HasVerticalAppearance
  blink::LayoutSliderContainer::UpdateLayout
  blink::LayoutBlockFlow::PositionAndLayoutOnceIfNeeded
  
Memory Tool: SYZYASAN

Regressed: https://clusterfuzz.com/revisions?job=windows_syzyasan_content_shell&range=502499:502500
Fixed: https://clusterfuzz.com/revisions?job=windows_syzyasan_content_shell&range=502525:502526

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6009947812003840

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 6009947812003840 is verified as fixed, so closing issue as verified.

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