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Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Pointer-overflow in blink::FindBuffer::MappingForIndex

Project Member Reported by ClusterFuzz, Dec 16

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4625366997794816

Fuzzer: inferno_twister
Job Type: linux_ubsan_chrome
Platform Id: linux

Crash Type: Pointer-overflow
Crash Address: 
Crash State:
  blink::FindBuffer::MappingForIndex
  blink::FindBuffer::PositionAtStartOfCharacterAtIndex
  blink::FindBuffer::RangeFromBufferIndex
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=616895:616898

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4625366997794816

Additional requirements: Requires Gestures

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Dec 16

Components: Blink>Editing
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, Dec 16

Labels: Test-Predator-Auto-Owner
Owner: rakina@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/0be1119f808d95d053e7368aa3352b7de29ecc87 (Reland "Find-in-page per block using FindBuffer").

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.
Hmm, I can't reproduce it locally. The minimized testcase is just "<body>
<style>" and I also tried doing the interactions listed (well, just moving around the mouse and clicking the keys)
Labels: Needs-TestConfirmation

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