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Issue 904618 link

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Issue metadata

Status: Verified
Owner:
Last visit 15 days ago
Closed: Jan 3
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux
Pri: 1
Type: Bug



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Null-dereference READ in blink::NodeTraversal::ChildAt

Project Member Reported by ClusterFuzz, Nov 13

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5664176548347904

Fuzzer: bj_broddelwerk
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000010
Crash State:
  blink::NodeTraversal::ChildAt
  blink::PositionIteratorAlgorithm<blink::EditingAlgorithm<blink::NodeTraversal> >
  blink::MostBackwardCaretPosition
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=533653:533655

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5664176548347904

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Nov 13

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, Nov 13

Labels: Test-Predator-Auto-Owner
Owner: tanvir.r...@samsung.com
Status: Assigned (was: Untriaged)
Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/7ee0cb4bd0396c0ed26bbf9611cf310fcc096bb3 (Directional code cleanup in editing module).

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, Jan 3

ClusterFuzz has detected this issue as fixed in range 619628:619629.

Detailed report: https://clusterfuzz.com/testcase?key=5664176548347904

Fuzzer: bj_broddelwerk
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000010
Crash State:
  blink::NodeTraversal::ChildAt
  blink::PositionIteratorAlgorithm<blink::EditingAlgorithm<blink::NodeTraversal> >
  blink::MostBackwardCaretPosition
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=533653:533655
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=619628:619629

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5664176548347904

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.

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, Jan 3

Labels: ClusterFuzz-Verified
Status: Verified (was: Assigned)
ClusterFuzz testcase 5664176548347904 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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