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Issue 912828 link

Starred by 1 user
Status: Duplicate
Merged: issue 803649
Owner:
pdr@chromium.org
Closed: Dec 7
Cc:
vmp...@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in blink::PropertyTreeManager::SynthesizeCcEffectsForClipsIfNeeded

Project Member Reported by ClusterFuzz, Dec 7 
Detailed report: https://clusterfuzz.com/testcase?key=5919331868999680

Fuzzer: ochang_domfuzzer
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  blink::PropertyTreeManager::SynthesizeCcEffectsForClipsIfNeeded
  blink::PropertyTreeManager::BuildEffectNodesRecursively
  blink::PropertyTreeManager::BuildEffectNodesRecursively
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=602149:602151

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5919331868999680

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Dec 7

Components: Blink>Paint
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 7

Labels: Test-Predator-Auto-Owner
Owner: pdr@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/4e8eb7fbb5ada77093c526013db61d2c438ca24d ([BlinkGenPropertyTrees] Promote BGPT to experimental).

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 pdr@chromium.org, Dec 7

Mergedinto: 803649
Status: Duplicate (was: Assigned)
I think this is another instance of 803649. Reduced testcase:
<!doctype html>
<div style="columns: 1;">
  <div style="clip-path: circle(40%);">
    <div style="backdrop-filter: grayscale(100%)"></div>
  </div>
</div>
Project Member

Comment 4 by ClusterFuzz, Dec 19 

ClusterFuzz has detected this issue as fixed in range 617700:617701.

Detailed report: https://clusterfuzz.com/testcase?key=5919331868999680

Fuzzer: ochang_domfuzzer
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  blink::PropertyTreeManager::SynthesizeCcEffectsForClipsIfNeeded
  blink::PropertyTreeManager::BuildEffectNodesRecursively
  blink::PropertyTreeManager::BuildEffectNodesRecursively
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=602149:602151
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=617700:617701

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5919331868999680

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

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.
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