roachtest: tpccbench/nodes=9/cpu=4/multi-region failed

[cockroach-teamcity]

roachtest.tpccbench/nodes=9/cpu=4/multi-region failed with artifacts on ricky-test-upgrade-roachprod @ 6d809e6a4377d4d9952cd0e0ed7b4bf6c9f8b3b7:

		7: 12680
		5: 12662
		10: 12440
		11: 12521
		6: 14283
		9: 12500
		Error: UNCLASSIFIED_PROBLEM: 3: dead
		(1) UNCLASSIFIED_PROBLEM
		Wraps: (2) secondary error attachment
		  | 2: dead
		  | (1) attached stack trace
		  |   -- stack trace:
		  |   | main.glob..func14
		  |   | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:1159
		  |   | main.wrap.func1
		  |   | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:283
		  |   | github.com/spf13/cobra.(*Command).execute
		  |   | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/cobra/command.go:830
		  |   | github.com/spf13/cobra.(*Command).ExecuteC
		  |   | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/cobra/command.go:914
		  |   | github.com/spf13/cobra.(*Command).Execute
		  |   | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/cobra/command.go:864
		  |   | main.main
		  |   | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:2054
		  |   | runtime.main
		  |   | 	/usr/local/go/src/runtime/proc.go:204
		  |   | runtime.goexit
		  |   | 	/usr/local/go/src/runtime/asm_amd64.s:1374
		  | Wraps: (2) 2: dead
		  | Error types: (1) *withstack.withStack (2) *errutil.leafError
		Wraps: (3) attached stack trace
		  -- stack trace:
		  | main.glob..func14
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:1159
		  | main.wrap.func1
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:283
		  | github.com/spf13/cobra.(*Command).execute
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/cobra/command.go:830
		  | github.com/spf13/cobra.(*Command).ExecuteC
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/cobra/command.go:914
		  | github.com/spf13/cobra.(*Command).Execute
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/cobra/command.go:864
		  | main.main
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:2054
		  | runtime.main
		  | 	/usr/local/go/src/runtime/proc.go:204
		  | runtime.goexit
		  | 	/usr/local/go/src/runtime/asm_amd64.s:1374
		Wraps: (4) 3: dead
		Error types: (1) errors.Unclassified (2) *secondary.withSecondaryError (3) *withstack.withStack (4) *errutil.leafError

Reproduce

To reproduce, try:

# From https://go.crdb.dev/p/roachstress, perhaps edited lightly.
caffeinate ./roachstress.sh tpccbench/nodes=9/cpu=4/multi-region

Same failure on other branches

• roachtest: tpccbench/nodes=9/cpu=4/multi-region failed [overload,closed ts regressing from X to Y] #61981 roachtest: tpccbench/nodes=9/cpu=4/multi-region failed [overload] [C-test-failure O-roachtest O-robot branch-master]
• roachtest: tpccbench/nodes=9/cpu=4/multi-region failed [attempt to create load generator failed] #61181 roachtest: tpccbench/nodes=9/cpu=4/multi-region failed [attempt to create load generator failed] [C-test-failure O-roachtest O-robot branch-release-20.2]

/cc @cockroachdb/kv

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