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Issue 890585 link

Starred by 4 users

Issue metadata

Status: Verified
Owner:
Closed: Jan 19
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 2
Type: Bug



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Null-dereference READ in blink::Document::UpdateStyleAndLayoutIgnorePendingStylesheets

Project Member Reported by ClusterFuzz, Sep 29

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=6692614655705088

Fuzzer: mbarbella_js_mutation_layout
Job Type: linux_asan_chrome_mp
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000210
Crash State:
  blink::Document::UpdateStyleAndLayoutIgnorePendingStylesheets
  blink::FrameSelection::ComputeVisibleSelectionInDOMTreeDeprecated
  blink::WebLocalFrameImpl::HasSelection
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_chrome_mp&range=594766:594769

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6692614655705088

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Sep 29

Labels: OS-Mac
Project Member

Comment 2 by ClusterFuzz, Sep 29

Components: Blink>Editing Blink>Internals
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, Sep 29

Labels: Test-Predator-Auto-Owner
Owner: schenney@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/fe7f8c3cc9889e4a1fd18742691d621982b2c171 (Add UMA and UKM for forced layouts).

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.
Components: -Blink>Editing -Blink>Internals Blink>Layout
Labels: -Pri-1 Pri-2
This is revealing an existing problem. Apparently the frame_ is non null but bad. Will require more investigation but not a P1.
Duplicate of bug 825277?
Yes, probably, though I think this is something I really should have written the trivial fix for. So let's leave it.
Cc: kkaluri@chromium.org schenney@chromium.org
 Issue 894052  has been merged into this issue.
Project Member

Comment 8 by ClusterFuzz, Jan 19 (3 days ago)

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 6239326311284736 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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