*: fix data race and enable race for tidb-server

[hawkingrei]

Signed-off-by: Weizhen Wang wangweizhen@pingcap.com

What problem does this PR solve?

Issue Number: close #38178

Problem Summary:

What is changed and how it works?

Check List

Tests

• Manual test (add detailed scripts or steps below)
  enable race for tidb-server binary and run it with mysql-test.

Release note

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

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

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• lcwangchao
• xhebox

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[xhebox]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 197a5e5

[ti-chi-bot]

In response to a cherrypick label: cannot checkout 6.1: error checking out 6.1: exit status 1. output: error: pathspec '6.1' did not match any file(s) known to git

[ti-srebot]

cherry pick to release-6.1 in PR #38212

[ti-chi-bot]

In response to a cherrypick label: cannot checkout 6.3: error checking out 6.3: exit status 1. output: error: pathspec '6.3' did not match any file(s) known to git

[ti-srebot]

cherry pick to release-6.3 in PR #38213

[sre-bot]

TiDB MergeCI notify

🔴 Bad News! [1] CI still failing after this pr merged.
These failed integration tests don't seem to be introduced by the current PR.

CI Name	Result	Duration	Compare with Parent commit
idc-jenkins-ci-tidb/common-test	🔴 failed 1, success 10, total 11	9 min 8 sec	Existing failure
idc-jenkins-ci-tidb/integration-ddl-test	🟢 all 6 tests passed	29 min	Existing passed
idc-jenkins-ci/integration-cdc-test	🟢 all 37 tests passed	25 min	Existing passed
idc-jenkins-ci-tidb/integration-common-test	🟢 all 17 tests passed	12 min	Existing passed
idc-jenkins-ci-tidb/sqllogic-test-2	🟢 all 28 tests passed	7 min 35 sec	Existing passed
idc-jenkins-ci-tidb/sqllogic-test-1	🟢 all 26 tests passed	6 min 15 sec	Existing passed
idc-jenkins-ci-tidb/tics-test	🟢 all 1 tests passed	6 min 8 sec	Existing passed
idc-jenkins-ci-tidb/mybatis-test	🟢 all 1 tests passed	2 min 55 sec	Existing passed
idc-jenkins-ci-tidb/integration-compatibility-test	🟢 all 1 tests passed	2 min 46 sec	Existing passed
idc-jenkins-ci-tidb/plugin-test	🟢 build success, plugin test success	4min	Existing passed