Through code search on file SkScan_Antihair.cpp, suspected CL is 
https://skia.googlesource.com/skia.git/+/20fbada09bbcc31d128959a8e4d4cac499741505
jbroman@, could you please take a look?
Thank you.

I don't see how that CL could be the cause. Assigning to caryclark@ (current Skia sheriff AFAICT) for triage.

There's no process at the moment to isolate this within Skia.
Taking myself off as the owner as I am not able to help out at this time.

Lowering severity on non-security int overflows as we need to prioritize other issues at this time.

ClusterFuzz has detected this issue as fixed in range 474169:474185.

Detailed report: https://clusterfuzz.com/testcase?key=6703684391272448

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

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  XRect_roundOut
  SkScan::AntiFillXRect
  aa_square_proc
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=456626:457730
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=474169:474185

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6703684391272448


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 6703684391272448 is verified as fixed, so closing issue.

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