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Issue metadata

Status: Verified
Owner:
Closed: Jun 2018
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in IsForcingLegacyLayout

Project Member Reported by ClusterFuzz, Jun 2 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6172427999248384

Fuzzer: attekett_dom_fuzzer
Job Type: linux_lsan_chrome_mp
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000018
Crash State:
  IsForcingLegacyLayout
  blink::LayoutTreeBuilderForElement::CreateLayoutObject
  CreateLayoutObjectIfNeeded
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_lsan_chrome_mp&range=548694:548695

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6172427999248384

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jun 2 2018

Components: Blink>DOM
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, Jun 2 2018

Labels: Test-Predator-Auto-Owner
Owner: xiaoche...@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/eff9809b3b5f70aa6e0f9a90b9996f87655a28e2 (DCHECK validity of |caret_offset| in AdjustInlineBoxPositionForTextDirectionInternal()).

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.
Project Member

Comment 3 by ClusterFuzz, Jun 3 2018

ClusterFuzz has detected this issue as fixed in range 563940:563941.

Detailed report: https://clusterfuzz.com/testcase?key=6172427999248384

Fuzzer: attekett_dom_fuzzer
Job Type: linux_lsan_chrome_mp
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000018
Crash State:
  IsForcingLegacyLayout
  blink::LayoutTreeBuilderForElement::CreateLayoutObject
  CreateLayoutObjectIfNeeded
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_lsan_chrome_mp&range=548694:548695
Fixed: https://clusterfuzz.com/revisions?job=linux_lsan_chrome_mp&range=563940:563941

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6172427999248384

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 4 by ClusterFuzz, Jun 3 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6172427999248384 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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