DATA RACE in the Session.RunInTxn() #42985
Description
Bug Report
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2. What did you expect to see? (Required)
3. What did you see instead (Required)
==================
WARNING: DATA RACE
Read at 0x00000c1d2918 by goroutine 248905:
github.com/pingcap/tidb/ddl/internal/session.(*Session).RunInTxn()
ddl/internal/session/session.go:118 +0xf9
github.com/pingcap/tidb/ddl.GetAndMarkBackfillJobsForOneEle()
ddl/job_table.go:725 +0x132
github.com/pingcap/tidb/ddl.GetTasks()
ddl/dist_backfilling.go:322 +0x10c
github.com/pingcap/tidb/ddl_test.TestGetTasks.func6()
ddl/job_table_test.go:827 +0x217
github.com/pingcap/failpoint.(*Failpoint).Enable()
external/com_github_pingcap_failpoint/failpoint.go:54 +0x44
github.com/pingcap/failpoint.(*Failpoints).Enable()
external/com_github_pingcap_failpoint/failpoints.go:105 +0x276
github.com/pingcap/failpoint.Enable()
external/com_github_pingcap_failpoint/failpoints.go:222 +0x184
github.com/pingcap/tidb/ddl_test.TestGetTasks.func6()
ddl/job_table_test.go:826 +0x185
github.com/pingcap/tidb/util.(*WaitGroupWrapper).Run.func1()
util/wait_group_wrapper.go:154 +0x73
Previous write at 0x00000c1d2918 by goroutine 248904:
github.com/pingcap/tidb/ddl/internal/session.(*Session).RunInTxn()
ddl/internal/session/session.go:116 +0x144
github.com/pingcap/tidb/ddl.GetAndMarkBackfillJobsForOneEle()
ddl/job_table.go:725 +0x132
github.com/pingcap/tidb/ddl.GetTasks()
ddl/dist_backfilling.go:322 +0x10c
github.com/pingcap/tidb/ddl_test.TestGetTasks.func5()
ddl/job_table_test.go:817 +0x151
github.com/pingcap/failpoint.(*Failpoint).Enable()
external/com_github_pingcap_failpoint/failpoint.go:54 +0x44
github.com/pingcap/failpoint.(*Failpoints).Enable()
external/com_github_pingcap_failpoint/failpoints.go:105 +0x276
github.com/pingcap/failpoint.Enable()
external/com_github_pingcap_failpoint/failpoints.go:222 +0xb0
github.com/pingcap/tidb/ddl_test.TestGetTasks.func5()
ddl/job_table_test.go:815 +0xb1
github.com/pingcap/tidb/util.(*WaitGroupWrapper).Run.func1()
util/wait_group_wrapper.go:154 +0x73
Goroutine 248905 (running) created at:
github.com/pingcap/tidb/util.(*WaitGroupWrapper).Run()
util/wait_group_wrapper.go:152 +0xe4
github.com/pingcap/tidb/ddl_test.TestGetTasks()
ddl/job_table_test.go:822 +0x13de
github.com/pingcap/failpoint.(*Failpoint).Enable()
external/com_github_pingcap_failpoint/failpoint.go:54 +0x44
github.com/pingcap/failpoint.(*Failpoints).Enable()
external/com_github_pingcap_failpoint/failpoints.go:105 +0x276
github.com/pingcap/failpoint.Enable()
external/com_github_pingcap_failpoint/failpoints.go:222 +0xfad
github.com/pingcap/tidb/ddl_test.TestGetTasks()
ddl/job_table_test.go:807 +0xfae
github.com/pingcap/tidb/domain.(*Domain).rebuildSysVarCache()
domain/sysvar_cache.go:146 +0x8c4
github.com/pingcap/tidb/domain.(*Domain).LoadSysVarCacheLoop()
domain/domain.go:1580 +0xa8
github.com/pingcap/tidb/session.BootstrapSession()
session/session.go:3325 +0x6d3
github.com/pingcap/tidb/domain.(*Domain).GetSessionCache()
domain/sysvar_cache.go:62 +0x5c
github.com/pingcap/tidb/session.(*session).loadCommonGlobalVariablesIfNeeded()
session/session.go:3672 +0x104
github.com/pingcap/tidb/session.(*session).ExecuteStmt()
session/session.go:2103 +0x145
github.com/pingcap/tidb/session.(*session).ExecuteInternal()
session/session.go:1638 +0x31b
github.com/pingcap/tidb/domain.(*Domain).LoadPrivilegeLoop()
domain/domain.go:1524 +0x130
github.com/pingcap/tidb/session.BootstrapSession()
session/session.go:3318 +0x684
github.com/pingcap/tidb/testkit.bootstrap()
testkit/mockstore.go:85 +0xac
github.com/pingcap/tidb/testkit.CreateMockStoreAndDomain()
testkit/mockstore.go:70 +0xe9
github.com/pingcap/tidb/ddl_test.TestGetTasks()
ddl/job_table_test.go:742 +0xf0
testing.tRunner()
GOROOT/src/testing/testing.go:1576 +0x216
testing.(*T).Run.func1()
GOROOT/src/testing/testing.go:1629 +0x47
Goroutine 248904 (running) created at:
github.com/pingcap/tidb/util.(*WaitGroupWrapper).Run()
util/wait_group_wrapper.go:152 +0xe4
github.com/pingcap/tidb/ddl_test.TestGetTasks()
ddl/job_table_test.go:814 +0x11fd
github.com/pingcap/failpoint.(*Failpoint).Enable()
external/com_github_pingcap_failpoint/failpoint.go:54 +0x44
github.com/pingcap/failpoint.(*Failpoints).Enable()
external/com_github_pingcap_failpoint/failpoints.go:105 +0x276
github.com/pingcap/failpoint.Enable()
external/com_github_pingcap_failpoint/failpoints.go:222 +0xfad
github.com/pingcap/tidb/ddl_test.TestGetTasks()
ddl/job_table_test.go:807 +0xfae
github.com/pingcap/tidb/domain.(*Domain).rebuildSysVarCache()
domain/sysvar_cache.go:146 +0x8c4
github.com/pingcap/tidb/domain.(*Domain).LoadSysVarCacheLoop()
domain/domain.go:1580 +0xa8
github.com/pingcap/tidb/session.BootstrapSession()
session/session.go:3325 +0x6d3
github.com/pingcap/tidb/domain.(*Domain).GetSessionCache()
domain/sysvar_cache.go:62 +0x5c
github.com/pingcap/tidb/session.(*session).loadCommonGlobalVariablesIfNeeded()
session/session.go:3672 +0x104
github.com/pingcap/tidb/session.(*session).ExecuteStmt()
session/session.go:2103 +0x145
github.com/pingcap/tidb/session.(*session).ExecuteInternal()
session/session.go:1638 +0x31b
github.com/pingcap/tidb/domain.(*Domain).LoadPrivilegeLoop()
domain/domain.go:1524 +0x130
github.com/pingcap/tidb/session.BootstrapSession()
session/session.go:3318 +0x684
github.com/pingcap/tidb/testkit.bootstrap()
testkit/mockstore.go:85 +0xac
github.com/pingcap/tidb/testkit.CreateMockStoreAndDomain()
testkit/mockstore.go:70 +0xe9
github.com/pingcap/tidb/ddl_test.TestGetTasks()
ddl/job_table_test.go:742 +0xf0
testing.tRunner()
GOROOT/src/testing/testing.go:1576 +0x216
testing.(*T).Run.func1()
GOROOT/src/testing/testing.go:1629 +0x47
==================
https://prow.hawkingrei.com/view/gs/prowpingcap/logs/tidb_race/1645947116700307456