pkg/sql/internal.go:1306 +0x1570
  github.com/cockroachdb/cockroach/pkg/sql.(*InternalExecutor).queryInternalBuffered()
      pkg/sql/internal.go:686 +0x2ba
  github.com/cockroachdb/cockroach/pkg/sql.(*InternalExecutor).queryRowExWithCols()
      pkg/sql/internal.go:774 +0x19d
  github.com/cockroachdb/cockroach/pkg/sql.(*InternalExecutor).QueryRowExWithCols()
      pkg/sql/internal.go:761 +0x1c4
  github.com/cockroachdb/cockroach/pkg/sql.(*InternalExecutor).QueryRowEx()
      pkg/sql/internal.go:734 +0x10b
  github.com/cockroachdb/cockroach/pkg/sql.(*internalTxn).QueryRowEx()
      <autogenerated>:1 +0x2a
  github.com/cockroachdb/cockroach/pkg/sql.countIndexRowsAndMaybeCheckUniqueness.func1.1()
      pkg/sql/backfill.go:2130 +0x1af
  github.com/cockroachdb/cockroach/pkg/sql.(*InternalExecutor).WithSyntheticDescriptors()
      pkg/sql/internal.go:162 +0x109
  github.com/cockroachdb/cockroach/pkg/sql.(*internalTxn).WithSyntheticDescriptors()
      <autogenerated>:1 +0x5d
  github.com/cockroachdb/cockroach/pkg/sql.countIndexRowsAndMaybeCheckUniqueness.func1()
      pkg/sql/backfill.go:2129 +0x5e6
  github.com/cockroachdb/cockroach/pkg/sql/schemachanger/scdeps.validator.makeHistoricalInternalExecTxnRunner.func1.1()
      pkg/sql/schemachanger/scdeps/validator.go:135 +0xc7
  github.com/cockroachdb/cockroach/pkg/sql.(*InternalDB).DescsTxn.func1()
      pkg/sql/internal.go:1943 +0x52
  github.com/cockroachdb/cockroach/pkg/sql.(*InternalDB).txn.func4()
      pkg/sql/internal.go:2040 +0x4d3
  github.com/cockroachdb/cockroach/pkg/kv.(*Txn).exec()
      pkg/kv/txn.go:1131 +0x2b7
  github.com/cockroachdb/cockroach/pkg/kv.runTxn()
      pkg/kv/db.go:1074 +0x6b
  github.com/cockroachdb/cockroach/pkg/kv.(*DB).TxnWithAdmissionControl()
      pkg/kv/db.go:1037 +0xec
  github.com/cockroachdb/cockroach/pkg/sql.(*InternalDB).txn.func2()
      pkg/sql/internal.go:2013 +0x6e
  github.com/cockroachdb/cockroach/pkg/sql.(*InternalDB).txn()
      pkg/sql/internal.go:2027 +0x6ea
  github.com/cockroachdb/cockroach/pkg/sql.(*InternalDB).DescsTxn()
      pkg/sql/internal.go:1941 +0xd7
  github.com/cockroachdb/cockroach/pkg/sql/schemachanger/scdeps.validator.makeHistoricalInternalExecTxnRunner.func1()
      pkg/sql/schemachanger/scdeps/validator.go:129 +0x1c1
  github.com/cockroachdb/cockroach/pkg/sql/catalog/descs.(*historicalInternalExecTxnRunner).Exec()
      pkg/sql/catalog/descs/collection.go:1425 +0x56
  github.com/cockroachdb/cockroach/pkg/sql.countIndexRowsAndMaybeCheckUniqueness()
      pkg/sql/backfill.go:2120 +0xa56
  github.com/cockroachdb/cockroach/pkg/sql.ValidateForwardIndexes.func2()
      pkg/sql/backfill.go:1900 +0x1e5
  github.com/cockroachdb/cockroach/pkg/sql.ValidateForwardIndexes.Group.GoCtx.func4()
      pkg/util/ctxgroup/ctxgroup.go:199 +0x11a
  golang.org/x/sync/errgroup.(*Group).Go.func1()
      external/org_golang_x_sync/errgroup/errgroup.go:78 +0x91
==================