Find it and CL did not provide any possible suspects.
Using Code Search for the file, "tiling_data.cc" assigning to the concern owner.
Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/d5e2d15230ddfe690803663e408389eeaf17afe6

@trchen -- Could you please look into the isue, kindly re-assign if this is not related to your changes.
Thank You.

ClusterFuzz has detected this issue as fixed in range 458585:458598.

Detailed report: https://clusterfuzz.com/testcase?key=6383160859557888

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  cc::TilingData::TileYIndexFromSrcCoord
  cc::TilingData::ExpandRectIgnoringBordersToTileBounds
  cc::PictureLayerTiling::ComputeTilePriorityRects
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=375946:376263
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=458585:458598

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv97iW76ta_MGKW6rPxFCuThUcQNl6ekpx9ncSW-rcR9vqLi5mH80h5aV6S4eBc6LR_hmhKYDJ_ELB6JQCmI2Y_sMkRrLlcBjMBje-Em9S_rkNiR-ByMtRHu0uPYKkkwxdgf0BDY11pzO41FzVYCdioDzseeyht7mhkfWfNnM-m2BPVnzSnE9U-RHfGt-qaraW-SCoKi09sSKg9OcvV-HEgmLpBXlga1pSJWVOlVhsc7XwTPxiJabrFW955JS8wFj60be0R5Wo33qYRTkeCoBcYmuYwwL4mlKCjsI8avnmC9Q5rOs9uuaVghnrmDObkYMt54Ry09GYYXnW9pweB9HE3-3DjSVxbn6LAU5jBgFmSadpgXlPndQYhe1qqon9UEDEpf9rrbxQnU6RTgBgYpcyoSzTMxnxA?testcase_id=6383160859557888


See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs 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 6383160859557888 is verified as fixed, so closing issue.

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