tidb server crashes when doing gracful shutdown

[cfzjywxk]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

Not clear by now

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

No exception happens.

3. What did you see instead (Required)

The tidb-server crashes because of fatal error

[2023/10/26 18:59:13.564 +00:00] [ERROR] [terror.go:308] ["function call errored"] [error="invalid PlanCacheStmt type"] [stack="github.com/pingcap/tidb/parser/terror.Call\n\t/tidb/parser/terror/terror.go:308\ngithub.com/pingcap/tidb/server.(*TiDBContext).Close\n\t/tidb/server/driver_tidb.go:312\ngithub.com/pingcap/tidb/server.closeConn\n\t/tidb/server/conn.go:361\ngithub.com/pingcap/tidb/server.(*clientConn).Close\n\t/tidb/server/conn.go:345\ngithub.com/pingcap/tidb/server.(*Server).kickIdleConnection\n\t/tidb/server/server.go:901\ngithub.com/pingcap/tidb/server.(*Server).GracefulDown\n\t/tidb/server/server.go:869\nmain.cleanup\n\t/tidb/tidb-server/main.go:842\nmain.main.func1\n\t/tidb/tidb-server/main.go:229\ngithub.com/pingcap/tidb/util/signal.SetupSignalHandler.func2\n\t/tidb/util/signal/signal_posix.go:55"]
[2023/10/26 18:59:13.565 +00:00] [ERROR] [terror.go:308] ["function call errored"] [error="invalid PlanCacheStmt type"] [stack="github.com/pingcap/tidb/parser/terror.Call\n\t/tidb/parser/terror/terror.go:308\ngithub.com/pingcap/tidb/server.(*TiDBContext).Close\n\t/tidb/server/driver_tidb.go:312\ngithub.com/pingcap/tidb/server.closeConn\n\t/tidb/server/conn.go:361\ngithub.com/pingcap/tidb/server.(*clientConn).Close\n\t/tidb/server/conn.go:345\ngithub.com/pingcap/tidb/server.(*Server).onConn.func3\n\t/tidb/server/server.go:624\ngithub.com/pingcap/tidb/server.(*Server).onConn\n\t/tidb/server/server.go:664"]
[2023/10/26 18:59:13.569 +00:00] [ERROR] [terror.go:308] ["function call errored"] [error="invalid PlanCacheStmt type"] [stack="github.com/pingcap/tidb/parser/terror.Call\n\t/tidb/parser/terror/terror.go:308\ngithub.com/pingcap/tidb/server.(*TiDBContext).Close\n\t/tidb/server/driver_tidb.go:312\ngithub.com/pingcap/tidb/server.closeConn\n\t/tidb/server/conn.go:361\ngithub.com/pingcap/tidb/server.(*clientConn).Close\n\t/tidb/server/conn.go:345\ngithub.com/pingcap/tidb/server.(*Server).kickIdleConnection\n\t/tidb/server/server.go:901\ngithub.com/pingcap/tidb/server.(*Server).GracefulDown\n\t/tidb/server/server.go:869\nmain.cleanup\n\t/tidb/tidb-server/main.go:842\nmain.main.func1\n\t/tidb/tidb-server/main.go:229\ngithub.com/pingcap/tidb/util/signal.SetupSignalHandler.func2\n\t/tidb/util/signal/signal_posix.go:55"]

fatal error: concurrent map writes

4. What is your TiDB version? (Required)

v6.5.4

[bb7133]

Dup with #48224, close this one.

[cfzjywxk]

Dup with #48224, close this one.

@bb7133 The link seems to be incorrect.

[bb7133]

Dup with #48224, close this one.

@bb7133 The link seems to be incorrect.

Sorry, should be #36793

[bb7133]

Set severity to 'major'(aligned with #36793)