pkg/build: detect build kills as infrastructure errors

[dvyukov]

Another incarnation of #5317 : syzkaller build failed as:

touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a8c9939451aee6b1bb2809bdd4edf640b2da431f -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241113-150009'" -o ./bin/syz-manager github.com/google/syzkaller/syz-manager
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a8c9939451aee6b1bb2809bdd4edf640b2da431f -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241113-150009'" -o ./bin/syz-repro github.com/google/syzkaller/tools/syz-repro
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a8c9939451aee6b1bb2809bdd4edf640b2da431f -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241113-150009'" -o ./bin/syz-mutate github.com/google/syzkaller/tools/syz-mutate
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a8c9939451aee6b1bb2809bdd4edf640b2da431f -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241113-150009'" -o ./bin/syz-prog2c github.com/google/syzkaller/tools/syz-prog2c
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a8c9939451aee6b1bb2809bdd4edf640b2da431f -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241113-150009'" -o ./bin/syz-db github.com/google/syzkaller/tools/syz-db
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a8c9939451aee6b1bb2809bdd4edf640b2da431f -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241113-150009'" -o ./bin/syz-upgrade github.com/google/syzkaller/tools/syz-upgrade
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=a8c9939451aee6b1bb2809bdd4edf640b2da431f -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241113-150009'" -o ./bin/syz-ci github.com/google/syzkaller/syz-ci
go: error obtaining buildID for go tool compile: fork/exec /syzkaller/gopath/pkg/mod/golang.org/[email protected]/pkg/tool/linux_amd64/compile: resource temporarily unavailable
go: error obtaining buildID for go tool asm: fork/exec /syzkaller/gopath/pkg/mod/golang.org/[email protected]/pkg/tool/linux_amd64/asm: resource temporarily unavailable
make: *** [Makefile:156: manager] Error 1
make: *** Waiting for unfinished jobs....
make: *** [Makefile:168: repro] Error 1

[a-nogikh]

It looks more of a pkg/instance problem that pkg/build.

syzkaller/pkg/instance/instance.go

Line 82 in a8c9939

func (env *env) BuildSyzkaller(repoURL, commit string) (string, error) {

---

Where did it happen and what should have syzkaller done differently?

Should we, similarly to kernel build errors, report dashapi.BisectResultInfraError if it happened during bisection and not report it as a crash if it happened when syz-ci tried to update itself?

syzkaller/syz-ci/updater.go

Lines 217 to 220 in a8c9939

	if err := upd.build(commit); err != nil {
	log.Logf(0, "syzkaller: %v", err)
	upd.uploadBuildError(commit, err)
	}

[dvyukov]

Where did it happen and what should have syzkaller done differently?

See internal bug 378963998. An alert instead of a filed bug + red dashboard may be better.