one tidb oom after run insert workload 40min

[Lily2025]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

oltp_001_
load some sysbench data by br
run sysbench insert

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

all pod are normal

3. What did you see instead (Required)

after 40min，one tidb oom

NS：endless-oltp--tps-360668-1-571
grafana port：30778

4. What is your TiDB version? (Required)

/ # ./tidb-server -V
Release Version: v5.3.0
Edition: Community
Git Commit Hash: b00648b
Git Branch: heads/refs/tags/v5.3.0
UTC Build Time: 2021-11-12 11:54:28
GoVersion: go1.16.4
Race Enabled: false
TiKV Min Version: v3.0.0-60965b006877ca7234adaced7890d7b029ed1306
Check Table Before Drop: false

[winoros]

We will use #30880 to trace it.

[github-actions]

Please check whether the issue should be labeled with 'affects-x.y' or 'fixes-x.y.z', and then remove 'needs-more-info' label.