Detailed report: https://clusterfuzz.com/testcase?key=5121491440107520

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

Crash Type: Integer-overflow
Crash Address: 
Crash State:
  blink::LayoutFrameSet::UpdateLayout
  blink::LayoutBlockFlow::PositionAndLayoutOnceIfNeeded
  blink::LayoutBlockFlow::LayoutBlockChild
  
Sanitizer: undefined (UBSAN)

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5121491440107520

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.