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Issue 792550 link

Starred by 2 users
Status: Duplicate
Merged: issue 792946
Owner:
futhark@chromium.org
Closed: Dec 2017
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in blink::LayoutObject::GetDocument

Project Member Reported by ClusterFuzz, Dec 6 2017 
Detailed report: https://clusterfuzz.com/testcase?key=5721390476165120

Fuzzer: inferno_twister
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::LayoutObject::GetDocument
  blink::LayoutObject::IsDocumentElement
  blink::LayoutBoxModelObject::StyleDidChange
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=521669:521676

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5721390476165120

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Dec 6 2017

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, Dec 6 2017

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/+/fc5c3629044888b8d723cc11424879bb883d8d3e (Wrap text child of display:contents in anonymous if necessary.).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.

Comment 3 by futhark@chromium.org, Dec 8 2017

Mergedinto: 792946
Status: Duplicate (was: Assigned)
Project Member

Comment 4 by bugdroid1@chromium.org, Dec 11 2017 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4a7c779ed98e170ce8d51744d59786ad646a80af

commit 4a7c779ed98e170ce8d51744d59786ad646a80af
Author: Rune Lillesveen <futhark@chromium.org>
Date: Mon Dec 11 10:05:04 2017

Add checks for anonymous boxes being of table part.

Anonymous inline wrappers for display:contents were mistakenly assumed
to be anonymous table parts.

Bug:  792439 ,  792946 ,  792550 
Change-Id: Ib7017ff67a8658135d2e08c47f93966d5dbfa5bc
Reviewed-on: https://chromium-review.googlesource.com/817564
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#523069}
[modify] https://crrev.com/4a7c779ed98e170ce8d51744d59786ad646a80af/third_party/WebKit/Source/core/layout/LayoutObjectTest.cpp
[modify] https://crrev.com/4a7c779ed98e170ce8d51744d59786ad646a80af/third_party/WebKit/Source/core/layout/LayoutTable.cpp
[modify] https://crrev.com/4a7c779ed98e170ce8d51744d59786ad646a80af/third_party/WebKit/Source/core/layout/LayoutTableSection.cpp
►

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