pkg/cpuid: logs about Linux-specific /proc/cpuinfo missing on macOS

[bradfitz]

Description

There a init-time parse of /proc/cpuinfo which isn't conditional on the GOOS.

macOS doesn't have that file, so it shouldn't log a warning about it:

gvisor/pkg/cpuid/native_arm64.go

Line 49 in d9c66eb

cpuinfob, err := ioutil.ReadFile("/proc/cpuinfo")

This is a regression from some recent-ish refactor. I haven't yet hunted it down.

Steps to reproduce

No response

runsc version

n/a

docker version (if using docker)

n/a

uname

macOS

kubectl (if using Kubernetes)

n/a

repo state (if built from source)

Bug exists at HEAD (f857f26)

runsc debug logs (if available)

No response

[bradfitz]

Minimal repro demo:

bradfitz@book1pro gvisor_repro % cat foo.go 
package main

import (
	"fmt"

	_ "gvisor.dev/gvisor/pkg/cpuid"
)

func main() {
	fmt.Println("hi")
}
bradfitz@book1pro gvisor_repro % go run foo.go
W0731 08:27:20.214213   87353 native_arm64.go:52] Could not read /proc/cpuinfo: open /proc/cpuinfo: no such file or directory
W0731 08:27:20.214329   87353 native_arm64.go:177] Could not read /proc/self/auxv: open /proc/self/auxv: no such file or directory
hi
bradfitz@book1pro gvisor_repro % 

[bradfitz]

Could you just use https://pkg.go.dev/golang.org/x/sys/cpu instead? At least on darwin?

/cc @dsnet

[bradfitz]

I sent #7850 as a proposed workaround for now.

/cc @ayushr2 @kevinGC

[andig]

Seems this has been fixed?