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Issue metadata

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



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Null-dereference READ in blink::LayoutTable::RemoveColumn

Project Member Reported by ClusterFuzz, Jan 4 2018

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=4899721473949696

Fuzzer: mbarbella_webcomponents
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::LayoutTable::RemoveColumn
  blink::LayoutObjectChildList::RemoveChildNode
  blink::LayoutBoxModelObject::RemoveChild
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=526968:526970

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4899721473949696

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Jan 4 2018

Components: Blink>Layout
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, Jan 4 2018

Labels: Test-Predator-Auto-Owner
Owner: futhark@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/4766c5012f46eed5afec44dcbc10e7365eadbc1b (Merge anonymous table boxes when appropriate.).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.
Cc: dgro...@chromium.org
28 regression from this one cl, we should revert.
Cc: e...@chromium.org
Reverted in https://chromium-review.googlesource.com/c/chromium/src/+/851072. ClusterFuzz should auto-close these 28 bugs tmrw. Please do add tests from these bugs before putting the CL up again for review.
Project Member

Comment 5 by ClusterFuzz, Jan 5 2018

ClusterFuzz has detected this issue as fixed in range 527017:527023.

Detailed report: https://clusterfuzz.com/testcase?key=4899721473949696

Fuzzer: mbarbella_webcomponents
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::LayoutTable::RemoveColumn
  blink::LayoutObjectChildList::RemoveChildNode
  blink::LayoutBoxModelObject::RemoveChild
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=526968:526970
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=527017:527023

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4899721473949696

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 6 by ClusterFuzz, Jan 5 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 4899721473949696 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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