goleak: Errors on successful test run: found unexpected goroutines

[tiancaiamao]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

cd executor;
go test -run TestGlobalMemoryControl

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

Success

3. What did you see instead (Required)

[2022/10/28 20:05:50.306 +08:00] [INFO] [ddl.go:639] ["[ddl] stop DDL"] [ID=9d4da259-d7b1-44f9-aef1-743fba5805be]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:1094] ["closestReplicaReadCheckLoop exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:742] ["loadSchemaInLoop exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [handle_hist.go:168] ["SubLoadWorker exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:1541] ["dumpFileGcChecker exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [handle_hist.go:168] ["SubLoadWorker exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [handle_hist.go:168] ["SubLoadWorker exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [handle_hist.go:168] ["SubLoadWorker exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [handle_hist.go:168] ["SubLoadWorker exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:1331] ["LoadSysVarCacheLoop exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:1281] ["loadPrivilegeInLoop exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:1456] ["handleEvolvePlanTasksLoop exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:1412] ["globalBindHandleWorkerLoop exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:607] ["topologySyncerKeeper exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:584] ["globalConfigSyncerKeeper exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:559] ["infoSyncerKeeper exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:530] ["topNSlowQueryLoop exited."]
[2022/10/28 20:05:50.306 +08:00] [INFO] [domain.go:870] ["domain closed"] ["take time"=710.055µs]
[2022/10/28 20:05:50.311 +08:00] [INFO] [db.go:567] ["Closing database"]
[2022/10/28 20:05:50.312 +08:00] [INFO] [db.go:592] ["Memtable flushed"]
[2022/10/28 20:05:50.312 +08:00] [INFO] [db.go:596] ["Compaction finished"]
[2022/10/28 20:05:50.312 +08:00] [INFO] [db.go:615] ["BlobManager finished"]
[2022/10/28 20:05:50.312 +08:00] [INFO] [db.go:619] ["ResourceManager finished"]
[2022/10/28 20:05:50.312 +08:00] [INFO] [db.go:625] ["Waiting for closer"]
PASS
goleak: Errors on successful test run: found unexpected goroutines:
[Goroutine 10614 in state sleep, with time.Sleep on top of the stack:
goroutine 10614 [sleep]:
time.Sleep(0xdf8475800)
        /home/genius/project/go/src/runtime/time.go:195 +0x135
github.com/pingcap/tidb/util/gctuner.(*memoryLimitTuner).tuning.func1()
        /home/genius/project/src/github.com/pingcap/tidb/util/gctuner/memory_limit_tuner.go:69 +0x45
created by github.com/pingcap/tidb/util/gctuner.(*memoryLimitTuner).tuning
        /home/genius/project/src/github.com/pingcap/tidb/util/gctuner/memory_limit_tuner.go:61 +0x110
]
exit status 1
FAIL    github.com/pingcap/tidb/executor        6.165s

4. What is your TiDB version? (Required)