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Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 2
Type: Bug



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Float-cast-overflow in blink::FloatPoint::FloatPoint

Project Member Reported by ClusterFuzz, Jul 17

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5635650184019968

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Float-cast-overflow
Crash Address: 
Crash State:
  blink::FloatPoint::FloatPoint
  blink::MouseEvent::ComputeRelativePosition
  blink::MouseEvent::offsetX
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=551565:563900

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5635650184019968

Issue filed automatically.

See https://github.com/google/clusterfuzz-tools for more information.
 
Project Member

Comment 1 by ClusterFuzz, Jul 17

Components: Blink Platform
Labels: Test-Predator-Auto-Components
Automatically applying components based on crash stacktrace and information from OWNERS files.

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

Comment 2 by ClusterFuzz, Jul 17

Cc: danakj@chromium.org dgozman@chromium.org
Labels: Test-Predator-Auto-CC
Automatically adding ccs based on suspected regression changelists:

Remove Web geometry classes from WebDisplayItemList by danakj@chromium.org - https://chromium.googlesource.com/chromium/src/+/b1d8c49e3c969c8b99cedc9df5ef8ff0af3ba755

Remove use of Web geometry and layer constraint types in WebLayer by danakj@chromium.org - https://chromium.googlesource.com/chromium/src/+/e342a1ca9112ac202d2c886e1694e4de5461ace6

Move TextStream to WTF by dgozman@chromium.org - https://chromium.googlesource.com/chromium/src/+/9d28ae3a38a0b0dcf917910b88415e8c106c3988

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.
Doesn't look like my changes, this stack is in blink not in WebDisplayItemList or WebLayer.
My change was just moving TextStream, which is not even in the stack. I triggered re-run in hopes of better regression range.
Components: -Blink -Platform Blink>Input
Cc: kkaluri@chromium.org
Labels: M-68 Test-Predator-Wrong-CLs
Owner: szager@chromium.org
Status: Assigned (was: Untriaged)
Predator and CL could not provide any possible suspects.

Using Code Search for the file, "mouse_event.cc" suspecting the below Cl might have caused this issue

Suspect CL: https://chromium.googlesource.com/chromium/src/+/7853b97dfb55ec27a36ead7f1960abaaf1b639eb

szager@ -- Could you please look into this issue.

Thanks!

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