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Issue 834714 link

Starred by 1 user
Status: Duplicate
Merged: issue 833447
Owner:
steimel@chromium.org
Closed: Apr 2018
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in blink::MediaControlSliderElement::TrackWidth

Project Member Reported by ClusterFuzz, Apr 19 2018 
Detailed report: https://clusterfuzz.com/testcase?key=6739874502410240

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::MediaControlSliderElement::TrackWidth
  blink::MediaControlSliderElement::SetBeforeSegmentPosition
  blink::MediaControlTimelineElement::RenderBarSegments
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=550802:550806

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6739874502410240

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 19 2018

Components: Blink>Media>Controls
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, Apr 19 2018

Labels: Test-Predator-Auto-Owner
Owner: steimel@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/0fade57cc302b008312a196c44bd172ae2b70eac (Enable Modern Media Controls and fix layout tests).

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.

Comment 3 by steimel@chromium.org, Apr 19 2018

Mergedinto: 833447
Status: Duplicate (was: Assigned)
Project Member

Comment 4 by ClusterFuzz, May 17 2018

Labels: -Reproducible Unreproducible
ClusterFuzz testcase 6739874502410240 appears to be flaky, updating reproducibility label.
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