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planner: check nil pointer in rule_result_reorder to avoid panic (#48100) #48119

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This is an automated cherry-pick of #48100

What problem does this PR solve?

Issue Number: close #45044

Problem Summary: planner: check nil pointer in rule_result_reorder to avoid panic

What is changed and how it works?

planner: check nil pointer in rule_result_reorder to avoid panic

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No need to test
    • I checked and no code files have been changed.

Side effects

  • Performance regression: Consumes more CPU
  • Performance regression: Consumes more Memory
  • Breaking backward compatibility

Documentation

  • Affects user behaviors
  • Contains syntax changes
  • Contains variable changes
  • Contains experimental features
  • Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

Signed-off-by: ti-chi-bot <ti-community-prow-bot@tidb.io>
@ti-chi-bot ti-chi-bot added release-note-none Denotes a PR that doesn't merit a release note. size/S Denotes a PR that changes 10-29 lines, ignoring generated files. type/cherry-pick-for-release-5.4 This PR is cherry-picked to release-5.4 from a source PR. labels Oct 30, 2023
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ti-chi-bot bot commented Oct 30, 2023

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign niubell for approval. For more information see the Kubernetes Code Review Process.

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ti-chi-bot bot commented Oct 30, 2023

This cherry pick PR is for a release branch and has not yet been approved by triage owners.
Adding the do-not-merge/cherry-pick-not-approved label.

To merge this cherry pick:

  1. It must be approved by the approvers firstly.
  2. AFTER it has been approved by approvers, please wait for the cherry-pick merging approval from triage owners.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

@ti-chi-bot ti-chi-bot bot added size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. and removed size/S Denotes a PR that changes 10-29 lines, ignoring generated files. labels Oct 30, 2023
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do-not-merge/cherry-pick-not-approved release-note-none Denotes a PR that doesn't merit a release note. size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. type/cherry-pick-for-release-5.4 This PR is cherry-picked to release-5.4 from a source PR.
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