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Issue metadata

Status: Duplicate
Merged: issue 805340
Owner:
Closed: Jan 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows
Pri: 1
Type: Bug



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Null-dereference READ in blink::PaintLayer::MaskBlendingAppliedByCompositor

Project Member Reported by ClusterFuzz, Jan 24 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5931648872087552

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_vptr_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::PaintLayer::MaskBlendingAppliedByCompositor
  blink::BoxPainter::PaintMaskImages
  blink::TableCellPainter::PaintMask
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=531437:531438

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5931648872087552

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jan 24 2018

Labels: OS-Windows
Project Member

Comment 2 by ClusterFuzz, Jan 24 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 3 by ClusterFuzz, Jan 24 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/+/05f80f7a4125ae48603ae5fbda1fe1b64a059673 ([SPv175] Use kSrcOver to paint inline mask).

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: 805340
Status: Duplicate (was: Assigned)
Project Member

Comment 5 by ClusterFuzz, Jan 25 2018

ClusterFuzz has detected this issue as fixed in range 531556:531560.

Detailed report: https://clusterfuzz.com/testcase?key=5931648872087552

Fuzzer: ifratric-browserfuzzer-v3
Job Type: linux_ubsan_vptr_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::PaintLayer::MaskBlendingAppliedByCompositor
  blink::BoxPainter::PaintMaskImages
  blink::TableCellPainter::PaintMask
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=531437:531438
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_chrome&range=531556:531560

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5931648872087552

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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