unstable race test

[zhouqiang-cl]

Bug Report

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1. Minimal reproduce step (Required)

run CI

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

race test pass

3. What did you see instead (Required)

[2021-05-12T14:49:58.540Z] [2021/05/12 22:47:50.758 +08:00] [ERROR] [misc.go:91] ["panic in the recoverable goroutine"] [r="\"test\""] ["stack trace"="github.com/pingcap/tidb/util.WithRecovery.func1\n\t/home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/util/misc.go:93\nruntime.gopanic\n\t/usr/local/go/src/runtime/panic.go:679\ngithub.com/pingcap/tidb/util.(*testMiscSuite).TestBasicFunc.func1\n\t/home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/util/misc_test.go:152\ngithub.com/pingcap/tidb/util.WithRecovery\n\t/home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/util/misc.go:96\ngithub.com/pingcap/tidb/util.(*testMiscSuite).TestBasicFunc\n\t/home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/util/misc_test.go:151\nreflect.Value.call\n\t/usr/local/go/src/reflect/value.go:460\nreflect.Value.Call\n\t/usr/local/go/src/reflect/value.go:321\ngithub.com/pingcap/check.(*suiteRunner).forkTest.func1\n\t/nfs/cache/gopath/pkg/mod/github.com/pingcap/check@v0.0.0-20200212061837-5e12011dc712/check.go:850\ngithub.com/pingcap/check.(*suiteRunner).forkCall.func1\n\t/nfs/cache/gopath/pkg/mod/github.com/pingcap/check@v0.0.0-20200212061837-5e12011dc712/check.go:739"] [stack="github.com/pingcap/tidb/util.WithRecovery.func1\n\t/home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/util/misc.go:91\nruntime.gopanic\n\t/usr/local/go/src/runtime/panic.go:679\ngithub.com/pingcap/tidb/util.(*testMiscSuite).TestBasicFunc.func1\n\t/home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/util/misc_test.go:152\ngithub.com/pingcap/tidb/util.WithRecovery\n\t/home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/util/misc.go:96\ngithub.com/pingcap/tidb/util.(*testMiscSuite).TestBasicFunc\n\t/home/jenkins/agent/workspace/tidb_ghpr_unit_test/go/src/github.com/pingcap/tidb/util/misc_test.go:151\nreflect.Value.call\n\t/usr/local/go/src/reflect/value.go:460\nreflect.Value.Call\n\t/usr/local/go/src/reflect/value.go:321\ngithub.com/pingcap/check.(*suiteRunner).forkTest.func1\n\t/nfs/cache/gopath/pkg/mod/github.com/pingcap/check@v0.0.0-20200212061837-5e12011dc712/check.go:850\ngithub.com/pingcap/check.(*suiteRunner).forkCall.func1\n\t/nfs/cache/gopath/pkg/mod/github.com/pingcap/check@v0.0.0-20200212061837-5e12011dc712/check.go:739"]

4. What is your TiDB version? (Required)

pr #23152

detail link: https://ci.pingcap.net/blue/organizations/jenkins/tidb_ghpr_unit_test/detail/tidb_ghpr_unit_test/2531/pipeline

[ti-srebot]

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