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

[cockroach-teamcity]

roachtest.tpccbench/nodes=9/cpu=4/multi-region failed with artifacts on release-21.2 @ 5c5501092e833d2a10d1351f8b4f4b2dc83e95a8:

		  | main.(*monitorImpl).Wait
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/monitor.go:124
		  | github.com/cockroachdb/cockroach/pkg/cmd/roachtest/tests.runTPCCBench
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/tests/tpcc.go:1121
		  | github.com/cockroachdb/cockroach/pkg/cmd/roachtest/tests.registerTPCCBenchSpec.func1
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/tests/tpcc.go:955
		  | main.(*testRunner).runTest.func2
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachtest/test_runner.go:777
		  | runtime.goexit
		  | 	/usr/local/go/src/runtime/asm_amd64.s:1571
		Wraps: (2) monitor failure
		Wraps: (3) unexpected node event: 11: dead (exit status 137)
		Error types: (1) *withstack.withStack (2) *errutil.withPrefix (3) *errors.errorString

	cluster.go:1296,context.go:91,cluster.go:1284,test_runner.go:866: dead node detection: /home/agent/work/.go/src/github.com/cockroachdb/cockroach/bin/roachprod monitor teamcity-6683358-1664430953-34-n12cpu4-geo --oneshot --ignore-empty-nodes: exit status 1 4: skipped
		3: 13855
		2: 13784
		1: 14504
		8: skipped
		12: skipped
		6: 12105
		5: 12282
		7: 13662
		9: 11960
		11: dead (exit status 137)
		10: 12010
		Error: UNCLASSIFIED_PROBLEM: 11: dead (exit status 137)
		(1) UNCLASSIFIED_PROBLEM
		Wraps: (2) attached stack trace
		  -- stack trace:
		  | github.com/cockroachdb/cockroach/pkg/roachprod.Monitor
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/roachprod/roachprod.go:596
		  | main.glob..func14
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:569
		  | main.wrap.func1
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:123
		  | github.com/spf13/cobra.(*Command).execute
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/cobra/command.go:856
		  | github.com/spf13/cobra.(*Command).ExecuteC
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/cobra/command.go:960
		  | github.com/spf13/cobra.(*Command).Execute
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/vendor/github.com/spf13/cobra/command.go:897
		  | main.main
		  | 	/home/agent/work/.go/src/github.com/cockroachdb/cockroach/pkg/cmd/roachprod/main.go:1170
		  | runtime.main
		  | 	/usr/local/go/src/runtime/proc.go:250
		  | runtime.goexit
		  | 	/usr/local/go/src/runtime/asm_amd64.s:1571
		Wraps: (3) 11: dead (exit status 137)
		Error types: (1) errors.Unclassified (2) *withstack.withStack (3) *errutil.leafError

Reproduce

See: roachtest README

/cc @cockroachdb/kv-triage

This test on roachdash | Improve this report!

Jira issue: CRDB-20065

[erikgrinaker]

n8 OOMed, heap profiles show maybeInlineSideloadedRaftCommand so this is #73376. I'm going to backport #88444 and #88346 to release-21.2 as well.

[erikgrinaker]

Mitigated by #88990.