cmd/compile: internal compiler error: bad live variable at entry

[mkumatag]

What version of Go are you using (go version)?

$ go version
tip commit - 1eeb257b88

Does this issue reproduce with the latest release?

yes, master branch

What operating system and processor architecture are you using (go env)?

go env Output

$ go env

What did you do?

$ git clone https://github.com/kubernetes/kubernetes.git
$ cd kubernetes
$ make test

What did you expect to see?

Tests should be successful

What did you see instead?

+ make test
+++ [0920 02:22:47] Building go targets for linux/ppc64le
    k8s.io/kubernetes/hack/make-rules/helpers/go2make (non-static)
+++ [0920 02:23:44] Building go targets for linux/ppc64le
    k8s.io/code-generator/cmd/prerelease-lifecycle-gen (non-static)
+++ [0920 02:24:19] Generating prerelease lifecycle code for 28 targets
+++ [0920 02:24:32] Building go targets for linux/ppc64le
    k8s.io/code-generator/cmd/deepcopy-gen (non-static)
+++ [0920 02:24:49] Generating deepcopy code for 243 targets
+++ [0920 02:25:24] Building go targets for linux/ppc64le
    k8s.io/code-generator/cmd/defaulter-gen (non-static)
+++ [0920 02:25:35] Generating defaulter code for 96 targets
+++ [0920 02:26:18] Building go targets for linux/ppc64le
    k8s.io/code-generator/cmd/conversion-gen (non-static)
+++ [0920 02:26:29] Generating conversion code for 133 targets
+++ [0920 02:28:03] Building go targets for linux/ppc64le
    k8s.io/kube-openapi/cmd/openapi-gen (non-static)
+++ [0920 02:29:26] Generating openapi code for KUBE
+++ [0920 02:30:35] Generating openapi code for AGGREGATOR
+++ [0920 02:30:43] Generating openapi code for APIEXTENSIONS
+++ [0920 02:30:50] Generating openapi code for CODEGEN
+++ [0920 02:30:59] Generating openapi code for SAMPLEAPISERVER
+++ [0920 02:31:15] Running tests without code coverage and with -race
# k8s.io/kubernetes/vendor/k8s.io/client-go/kubernetes/typed/core/v1
vendor/k8s.io/client-go/kubernetes/typed/core/v1/event_expansion.go:120:2: internal compiler error: bad live variable at entry of (*events).Search: stringRefUID (type string)

goroutine 1 [running]:
runtime/debug.Stack()
	/root/go/src/runtime/debug/stack.go:24 +0x6c
cmd/compile/internal/base.FatalfAt({0x1e66c80?, 0xc0?}, {0x9317b8, 0x24}, {0xc002d350d8, 0x2, 0x2})
	/root/go/src/cmd/compile/internal/base/print.go:227 +0x270
cmd/compile/internal/liveness.(*liveness).epilogue(0xc001e66c80)
	/root/go/src/cmd/compile/internal/liveness/plive.go:830 +0xa2c
cmd/compile/internal/liveness.Compute(0xc001b5a8c0, 0xc001d77860, 0x258e10?, 0x259408?)
	/root/go/src/cmd/compile/internal/liveness/plive.go:1340 +0x90
cmd/compile/internal/ssagen.genssa(0xc001d77860, 0xc001e00e00)
	/root/go/src/cmd/compile/internal/ssagen/ssa.go:6906 +0xac
cmd/compile/internal/ssagen.Compile(0xc001b5a8c0, 0xc000076800?)
	/root/go/src/cmd/compile/internal/ssagen/pgen.go:197 +0x278
cmd/compile/internal/gc.compileFunctions.func4.1(0x1?)
	/root/go/src/cmd/compile/internal/gc/compile.go:153 +0x4c
cmd/compile/internal/gc.compileFunctions.func2(0x7fff8b7a0a68?)
	/root/go/src/cmd/compile/internal/gc/compile.go:125 +0x3c
cmd/compile/internal/gc.compileFunctions.func4({0xc002e73000, 0x1c5, 0x200?})
	/root/go/src/cmd/compile/internal/gc/compile.go:152 +0x7c
cmd/compile/internal/gc.compileFunctions()
	/root/go/src/cmd/compile/internal/gc/compile.go:163 +0x188
cmd/compile/internal/gc.Main(0x948570)
	/root/go/src/cmd/compile/internal/gc/main.go:301 +0x13a4
main.main()
	/root/go/src/cmd/compile/main.go:57 +0xfc

[laboger]

This happens on ppc64le.

[cuonglm]

This happens on ppc64le.

Are you sure 00bee6d is the first bad commit?

[mkumatag]

Last known successful was with 7db923f

[mknyszek]

The same build failure in k8s: https://prow.k8s.io/view/gs/kubernetes-jenkins/logs/ci-build-and-push-k8s-at-golang-tip/1572196947165450240

CC @erifan @cherrymui @randall77

[cherrymui]

#55269 (comment) mentions commit cf53990 or 4c414c7 . It is unlikely the former, but the latter is possible, which changes scheduling.

Is there a way we can do the build ourselves? Preferably in a cross-compile environment without running the make file. Thanks.

[cuonglm]

ppc64le

I can reproduce on linux-amd64 as well:

$ git clone https://github.com/kubernetes/client-go.git
$ cd client-go/kubernetes/typed/core/v1
$ go build
go: downloading k8s.io/api v0.0.0-20220920024110-052d63f042d1
go: downloading k8s.io/apimachinery v0.0.0-20220920023906-f8159af4957e
go: downloading github.com/google/gofuzz v1.1.0
go: downloading k8s.io/klog/v2 v2.80.1
go: downloading k8s.io/utils v0.0.0-20220728103510-ee6ede2d64ed
go: downloading golang.org/x/time v0.0.0-20220210224613-90d013bbcef8
go: downloading k8s.io/kube-openapi v0.0.0-20220803162953-67bda5d908f1
go: downloading sigs.k8s.io/yaml v1.2.0
go: downloading github.com/google/gnostic v0.5.7-v3refs
go: downloading github.com/go-openapi/swag v0.19.14
go: downloading github.com/go-openapi/jsonreference v0.19.5
go: downloading github.com/PuerkitoBio/purell v1.1.1
go: downloading github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578
go: downloading github.com/mailru/easyjson v0.7.6
# k8s.io/client-go/kubernetes/typed/core/v1
./event_expansion.go:120:2: internal compiler error: bad live variable at entry of (*events).Search: stringRefUID (type string)

goroutine 158 [running]:
runtime/debug.Stack()
	/home/cuonglm/sources/go/src/runtime/debug/stack.go:24 +0x65
cmd/compile/internal/base.FatalfAt({0x1dc0280?, 0xc0?}, {0xd937c8, 0x24}, {0xc0023e37a0, 0x2, 0x2})
	/home/cuonglm/sources/go/src/cmd/compile/internal/base/print.go:227 +0x1d7
cmd/compile/internal/liveness.(*liveness).epilogue(0xc001dc0280)
	/home/cuonglm/sources/go/src/cmd/compile/internal/liveness/plive.go:830 +0xb4e
cmd/compile/internal/liveness.Compute(0xc000fae8c0, 0xc00181b040, 0x0?, 0x0?)
	/home/cuonglm/sources/go/src/cmd/compile/internal/liveness/plive.go:1340 +0x8f
cmd/compile/internal/ssagen.genssa(0xc00181b040, 0xc001c09f10)
	/home/cuonglm/sources/go/src/cmd/compile/internal/ssagen/ssa.go:6906 +0xa5
cmd/compile/internal/ssagen.Compile(0xc000fae8c0, 0xc0004b1f90?)
	/home/cuonglm/sources/go/src/cmd/compile/internal/ssagen/pgen.go:197 +0x26f
cmd/compile/internal/gc.compileFunctions.func4.1(0x0?)
	/home/cuonglm/sources/go/src/cmd/compile/internal/gc/compile.go:153 +0x3a
cmd/compile/internal/gc.compileFunctions.func3.1()
	/home/cuonglm/sources/go/src/cmd/compile/internal/gc/compile.go:140 +0x4d
created by cmd/compile/internal/gc.compileFunctions.func3
	/home/cuonglm/sources/go/src/cmd/compile/internal/gc/compile.go:138 +0x78

[cuonglm]

Revert 4c414c7 makes the build success.

[randall77]

Created revert, CL 432196