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Issue 834874 link

Starred by 1 user
Status: Fixed
Owner:
yosin@chromium.org
Closed: May 2018
Cc:
ifratric@google.com
editing-dev@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in blink::Node::GetLayoutObject

Project Member Reported by ClusterFuzz, Apr 19 2018 
Detailed report: https://clusterfuzz.com/testcase?key=6620782441267200

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

Crash Type: Null-dereference READ
Crash Address: 0x000000000010
Crash State:
  blink::Node::GetLayoutObject
  blink::TextOffsetMapping::ComputeContainigBlock
  NextWordPositionInternal
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_chrome&range=550102:550107

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6620782441267200

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Apr 19 2018

Components: Blink>Editing
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, Apr 19 2018

Labels: Test-Predator-Auto-Owner
Owner: yosin@chromium.org
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/1324be868df000cb2e070199ce2d10cd0c5a2706 (Make NextWordPosition() to utilize TextOffsetMapping).

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.

Comment 3 by yosin@chromium.org, May 9 2018

Components: Blink>Editing>Selection
Status: Started (was: Assigned)

Comment 4 by yosin@chromium.org, May 10 2018

Status: Fixed (was: Started)
http://crrev.com/c/1018923 should fix this issue.
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