Cannot Connect to Server After Specific Statements

[bajinsheng]

Bug Report

1. Minimal reproduce step (Required)

USE test;
DROP DATABASE IF EXISTS database0;
CREATE DATABASE database0;
USE database0;
CREATE TABLE t0(c0 CHAR);
INSERT INTO t0(c0) VALUES ('\''');
INSERT INTO t0(c0) VALUES ('-') ON DUPLICATE KEY UPDATE c0=CAST('\r' AS SIGNED);--D

After executing all the above content in MySQL client, including the comment, I get the error: Can't connect to the server. After that, whatever statement I execute, I always get Can't connect to the server error.

2. What did you expect to see? (Required)

No error.

3. What did you see instead (Required)

Can't connect to the server.

4. What is your TiDB version? (Required)

| Release Version: v6.5.0-alpha-96-g3bcd5a889
Edition: Community
Git Commit Hash: 3bcd5a889bded9ab23e7d077ea5c69df7982a495
Git Branch: master
UTC Build Time: 2022-11-21 03:02:37
GoVersion: go1.19.1
Race Enabled: false
TiKV Min Version: 6.2.0-alpha
Check Table Before Drop: false
Store: unistore |

MySQL client version:

mysql  Ver 8.0.31-0ubuntu0.20.04.1 for Linux on x86_64 ((Ubuntu))

[hawkingrei]

/label fuzz/sqlancer

[ti-chi-bot]

@hawkingrei: The label(s) fuzz/sqlancer cannot be applied. These labels are supported: challenge-program, compatibility-breaker, first-time-contributor, contribution, require-LGT3, good first issue, correctness, duplicate, proposal, security, needs-more-info, needs-cherry-pick-release-4.0, needs-cherry-pick-release-5.0, needs-cherry-pick-release-5.1, needs-cherry-pick-release-5.2, needs-cherry-pick-release-5.3, needs-cherry-pick-release-5.4, needs-cherry-pick-release-6.0, needs-cherry-pick-release-6.1, needs-cherry-pick-release-6.2, needs-cherry-pick-release-6.3, needs-cherry-pick-release-6.4, affects-4.0, affects-5.0, affects-5.1, affects-5.2, affects-5.3, affects-5.4, affects-6.0, affects-6.1, affects-6.2, affects-6.3, affects-6.4, may-affects-4.0, may-affects-5.0, may-affects-5.1, may-affects-5.2, may-affects-5.3, may-affects-5.4, may-affects-6.0, may-affects-6.1, may-affects-6.2, may-affects-6.3, may-affects-6.4.

In response to this:

/label fuzz/sqlancer

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[Defined2014]

same as #35678, fixed by #39405, close this.