process list contains corrupted process

[Rustin170506]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

1. Spawn a bunch of analysis jobs
2. Run select count(1) from PROCESSLIST where info like 'analyze%' limit 1;

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

The result same as the records from mysql.analyzed_jobs table.

3. What did you see instead (Required)

process list contains corrupted records that cannot be found in mysql.analyzed_jobs.

4. What is your TiDB version? (Required)

v6.5.7
commit: cd073ea