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Issue metadata

Status: Duplicate
Merged: issue 813348
Owner:
Closed: Feb 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Windows
Pri: 1
Type: Bug



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Null-dereference READ in blink::LowestCommonAncestor

Project Member Reported by ClusterFuzz, Feb 17 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5041368691638272

Fuzzer: bj_broddelwerk
Job Type: windows_asan_content_shell
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  blink::LowestCommonAncestor
  blink::PaintChunksToCcLayer::ConvertInto
  blink::GraphicsLayer::PaintContents
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=537371:537402

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5041368691638272

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Feb 17 2018

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, Feb 17 2018

Labels: Test-Predator-Auto-Owner
Owner: wangxianzhu@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/297ee9e2ac0fea6624373b0a17b7b78a4b08c033 ([SPv175] Clear paint property tree node change flags after painting).

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.
Mergedinto: 813348
Status: Duplicate (was: Assigned)
Project Member

Comment 4 by ClusterFuzz, Feb 19 2018

ClusterFuzz has detected this issue as fixed in range 537565:537566.

Detailed report: https://clusterfuzz.com/testcase?key=5041368691638272

Fuzzer: bj_broddelwerk
Job Type: windows_asan_content_shell
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  blink::LowestCommonAncestor
  blink::PaintChunksToCcLayer::ConvertInto
  blink::GraphicsLayer::PaintContents
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=537371:537402
Fixed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=537565:537566

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5041368691638272

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.

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