send on closed channel in the TestGetDefaultValueOfColumn #42653
Description
Bug Report
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3. What did you see instead (Required)
==================
WARNING: DATA RACE
Read at 0x00c04b5a57b0 by goroutine 423780:
runtime.chansend()
GOROOT/src/runtime/chan.go:160 +0x0
github.com/pingcap/tidb/ddl.(*backfillWorker).run.func1()
ddl/backfilling.go:450 +0x14a
github.com/pingcap/tidb/util.Recover()
util/misc.go:114 +0xa9
github.com/pingcap/tidb/ddl.(*backfillWorker).run.func2()
ddl/backfilling.go:449 +0x54
runtime.gopanic()
GOROOT/src/runtime/panic.go:890 +0x262
github.com/pingcap/tidb/ddl.(*backfillWorker).handleBackfillTask()
ddl/backfilling.go:327 +0x49c
github.com/pingcap/tidb/ddl.(*backfillWorker).run()
ddl/backfilling.go:486 +0xa54
github.com/pingcap/tidb/ddl.(*backfillScheduler).adjustWorkerSize.func1()
ddl/backfilling_scheduler.go:202 +0x71
Previous write at 0x00c04b5a57b0 by goroutine 423772:
runtime.closechan()
GOROOT/src/runtime/chan.go:357 +0x0
github.com/pingcap/tidb/ddl.(*backfillScheduler).close()
ddl/backfilling_scheduler.go:263 +0x137
github.com/pingcap/tidb/ddl.(*ddlCtx).writePhysicalTableRecord()
ddl/backfilling.go:870 +0x14b3
github.com/pingcap/tidb/ddl.(*worker).addPhysicalTableIndex()
ddl/index.go:1928 +0x574
github.com/pingcap/tidb/ddl.(*worker).addTableIndex()
ddl/index.go:1958 +0x147
github.com/pingcap/tidb/ddl.runReorgJobAndHandleErr.func1()
ddl/index.go:993 +0x131
github.com/pingcap/tidb/ddl.(*worker).runReorgJob.func1()
ddl/reorg.go:210 +0x92
Goroutine 423780 (running) created at:
github.com/pingcap/tidb/ddl.(*backfillScheduler).adjustWorkerSize()
ddl/backfilling_scheduler.go:202 +0x124a
github.com/pingcap/tidb/ddl.(*ddlCtx).writePhysicalTableRecord()
ddl/backfilling.go:835 +0xc9e
github.com/pingcap/tidb/ddl.(*worker).addPhysicalTableIndex()
ddl/index.go:1928 +0x574
github.com/pingcap/tidb/ddl.(*worker).addTableIndex()
ddl/index.go:1958 +0x147
github.com/pingcap/tidb/ddl.runReorgJobAndHandleErr.func1()
ddl/index.go:993 +0x131
github.com/pingcap/tidb/ddl.(*worker).runReorgJob.func1()
ddl/reorg.go:210 +0x92
Goroutine 423772 (finished) created at:
github.com/pingcap/tidb/ddl.(*worker).runReorgJob()
ddl/reorg.go:208 +0x645
github.com/pingcap/tidb/ddl.runReorgJobAndHandleErr()
ddl/index.go:988 +0x79d
github.com/pingcap/tidb/ddl.doReorgWorkForCreateIndex()
ddl/index.go:818 +0xbc7
github.com/pingcap/tidb/ddl.(*worker).onCreateIndex()
ddl/index.go:676 +0x11ee
github.com/pingcap/tidb/ddl.(*worker).runDDLJob()
ddl/ddl_worker.go:1024 +0x7f5
github.com/pingcap/tidb/ddl.(*worker).HandleDDLJobTable()
ddl/ddl_worker.go:768 +0x691
github.com/pingcap/tidb/ddl.(*ddl).delivery2worker.func1()
ddl/job_table.go:285 +0xb65
github.com/pingcap/tidb/util.(*WaitGroupWrapper).Run.func1()
util/wait_group_wrapper.go:154 +0x73
==================
panic: panic test [recovered]
panic: send on closed channel
goroutine 423783 [running]:
github.com/pingcap/tidb/ddl.(*backfillWorker).run.func1()
ddl/backfilling.go:450 +0x14b
github.com/pingcap/tidb/util.Recover({0x6f54012, 0x3}, {0x6f84eae, 0x12}, 0xc0292b3d58, 0x0)
util/misc.go:114 +0xaa
panic({0x68637c0, 0x87aac00})
GOROOT/src/runtime/panic.go:890 +0x263
github.com/pingcap/tidb/ddl.(*addIndexTxnWorker).BackfillData(0xc04b1b9c20, {0x0, {0x7f71c130eda8, 0xc04b3bd440}, 0x0, {0xc04b5ba200, 0x13, 0x100}, {0xc04b5f6210, 0x13, ...}, ...})
ddl/index.go:1847 +0x4a6
github.com/pingcap/tidb/ddl.(*backfillWorker).handleBackfillTask(0xc04b5a7640, 0x2c?, 0xc04b5d2880, {0x87f1b20, 0xc04b1b9c20})
ddl/backfilling.go:327 +0x49d
github.com/pingcap/tidb/ddl.(*backfillWorker).run(0xc04b5a7640, 0xc04b5b0f58?, {0x87f1b20, 0xc04b1b9c20}, 0xc04b17ea20)
ddl/backfilling.go:486 +0xa55
created by github.com/pingcap/tidb/ddl.(*backfillScheduler).adjustWorkerSize
ddl/backfilling_scheduler.go:202 +0x124b