Predator and CL could not provide any possible suspects.
Using the code search for the file, “PaintLayerScrollableArea.cpp” assigning to concern owner from GIT revision log.
Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/8c7b93bea11ac5361421231aa3be16f19d40ef5b
@chrishtr -- Could you please look into this issue, kindly reassign if it has nothing to do with your changes.
Thank You.

Automatically applying components based on information from OWNERS files. If this seems incorrect, please apply the Test-Predator-Wrong-Components label.

ClusterFuzz testcase 5162811918647296 is still reproducing on tip-of-tree build (trunk).

If this testcase was not reproducible locally or unworkable, ignore this notification and we will file another bug soon with hopefully a better and workable testcase.

Otherwise, if this is not intended to be fixed (e.g. this is an intentional crash), please add ClusterFuzz-Ignore label to prevent future bug filing with similar crash stacktrace.

ClusterFuzz has detected this issue as fixed in range 525795:525817.

Detailed report: https://clusterfuzz.com/testcase?key=5162811918647296

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  CornerStart
  blink::CornerRect
  blink::PaintLayerScrollableArea::ResizerCornerRect
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=370022:370027
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=525795:525817

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5162811918647296

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.