Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.

Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/254b97d5a6edc67def94977f747c4472182a867b (Introduce a direct dependency Blink -> WebRTC).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.

My CL never touched any of the code in the component that is affected.

This issue seems to be similar to the  Issue 675360 . 
wangxianzhu@ -- Could you please take a look into this issue.

As we are unable to provide possible suspect using Predator, CL and Code Search.

Thanks!

We don't check overflow on float/int arithmetic, and there seems no plan for it. 

ClusterFuzz testcase 5866967026892800 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 559316:559318.

Detailed report: https://clusterfuzz.com/testcase?key=5866967026892800

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

Crash Type: Float-cast-overflow
Crash Address: 
Crash State:
  blink::ScrollbarTheme::ThumbPosition
  ThumbPosition
  blink::Scrollbar::OffsetDidChange
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=552707:552711
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=559316:559318

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5866967026892800

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.

 Issue 844414  has been merged into this issue.