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Issue metadata

Status: Verified
Owner: ----
Closed: Jan 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Mac
Pri: 3
Type: Bug



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Position canonicalization causes null reference with SVG elements

Project Member Reported by ClusterFuzz, Oct 17 2017

Issue description

Detailed report: https://clusterfuzz.com/testcase?key=5364583492747264

Fuzzer: bj_broddelwerk
Job Type: linux_asan_content_shell_drt
Platform Id: linux

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

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=488849:488966

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5364583492747264

Issue filed automatically.

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

Comment 1 by ClusterFuzz, Oct 17 2017

Components: Blink>DOM Blink>Editing
Labels: Test-Predator-AutoComponents
Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.

Comment 2 by yosin@chromium.org, Oct 17 2017

Components: -Blink>Editing -Blink>DOM Blink>Editing>Selection
Labels: -Pri-1 Pri-3
Status: Available (was: Untriaged)
Summary: Position canonicalization causes null reference with SVG elements (was: Null-dereference READ in blink::Node* blink::NodeTraversal::ChildAtTemplate<blink::Node const>)
Lower to Pri-3 since this is cause by unusual HTML with SVG.
Labels: -Test-Predator-AutoComponents Test-Predator-Auto-Components
Project Member

Comment 4 by ClusterFuzz, Dec 8 2017

Labels: OS-Mac
Project Member

Comment 5 by ClusterFuzz, Jan 13 2018

ClusterFuzz has detected this issue as fixed in range 528919:528920.

Detailed report: https://clusterfuzz.com/testcase?key=5364583492747264

Fuzzer: bj_broddelwerk
Job Type: linux_asan_content_shell_drt
Platform Id: linux

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

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=488849:488966
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=528919:528920

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5364583492747264

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 13 2018

Labels: ClusterFuzz-Verified
Status: Verified (was: Available)
ClusterFuzz testcase 5364583492747264 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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