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Issue metadata

Status: Verified
Owner:
Closed: Mar 2018
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows , Mac
Pri: 2
Type: Bug



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Null-dereference READ in blink::ComputedStyle::Clone

Project Member Reported by ClusterFuzz, Feb 20 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6015629593935872

Fuzzer: inferno_layout_test_unmodified
Job Type: mac_asan_content_shell
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::ComputedStyle::Clone
  blink::StyleResolver::CreateAnimatableValueSnapshot
  blink::StringKeyframe::CSSPropertySpecificKeyframe::PopulateAnimatableValue
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=512075:512094

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6015629593935872

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Feb 20 2018

Labels: OS-Windows
Project Member

Comment 2 by ClusterFuzz, Feb 20 2018

Components: Blink>Animation Blink>CSS
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 3 by ClusterFuzz, Feb 20 2018

Labels: Test-Predator-Auto-Owner
Owner: majidvp@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/5f43611b81d52c48a9942a8600ea242ba03915bb ([animation-worklet] WorkletAnimation now starts animation on compositor).

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 4 by e...@chromium.org, Feb 22 2018

Components: -Blink>CSS
Labels: -Pri-1 Pri-2
Changing priority to P2. The stack trace shows that this only occurs at WorkletAnimation::StartOnCompositor which is gated behind the AnimationWorklet experimental feature flag.
Project Member

Comment 6 by ClusterFuzz, Mar 16 2018

Labels: OS-Linux
Project Member

Comment 7 by ClusterFuzz, Mar 21 2018

ClusterFuzz has detected this issue as fixed in range 544435:544631.

Detailed report: https://clusterfuzz.com/testcase?key=6015629593935872

Fuzzer: inferno_layout_test_unmodified
Job Type: mac_asan_content_shell
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::ComputedStyle::Clone
  blink::StyleResolver::CreateAnimatableValueSnapshot
  blink::StringKeyframe::CSSPropertySpecificKeyframe::PopulateAnimatableValue
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=512075:512094
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_content_shell&range=544435:544631

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6015629593935872

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.
Project Member

Comment 8 by ClusterFuzz, Mar 21 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6015629593935872 is verified as fixed, so closing issue as verified.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.

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