kubernetes

mirror of https://github.com/k3s-io/kubernetes.git synced 2026-07-18 13:57:38 +00:00

Files

Jordan Liggitt af36d192c3 RBAC helper: fix data race

The verbs parameter slice might be shared between different rule instances and
gets sorted (= written), so we have to make a copy or (even better) also
de-duplicate as in pkg/apis/rbac/helpers.go.

More specifically, plugin/pkg/auth/authorizer/rbac/bootstrappolicy/policy.go
shares the Read and ReadWrite slices, causing:

    WARNING: DATA RACE
    Read at 0x000008e5e5b0 by goroutine 124:
      slices.insertionSortOrdered[go.shape.string]()
          /home/prow/go/src/k8s.io/kubernetes/_output/local/go/cache/mod/golang.org/toolchain@v0.0.1-go1.25.6.linux-amd64/src/slices/zsortordered.go:14 +0x126
      slices.pdqsortOrdered[go.shape.string]()
          /home/prow/go/src/k8s.io/kubernetes/_output/local/go/cache/mod/golang.org/toolchain@v0.0.1-go1.25.6.linux-amd64/src/slices/zsortordered.go:75 +0x6c4
      slices.Sort[go.shape.[]string,go.shape.string]()
          /home/prow/go/src/k8s.io/kubernetes/_output/local/go/cache/mod/golang.org/toolchain@v0.0.1-go1.25.6.linux-amd64/src/slices/sort.go:18 +0x64
      sort.Strings()
          /home/prow/go/src/k8s.io/kubernetes/_output/local/go/cache/mod/golang.org/toolchain@v0.0.1-go1.25.6.linux-amd64/src/sort/sort.go:181 +0xe
      k8s.io/kubernetes/pkg/apis/rbac/v1.(*PolicyRuleBuilder).Rule()
          /home/prow/go/src/k8s.io/kubernetes/pkg/apis/rbac/v1/helpers.go:98 +0x2c9
      k8s.io/kubernetes/pkg/apis/rbac/v1.(*PolicyRuleBuilder).RuleOrDie()
          /home/prow/go/src/k8s.io/kubernetes/pkg/apis/rbac/v1/helpers.go:65 +0x2f44
      k8s.io/kubernetes/plugin/pkg/auth/authorizer/rbac/bootstrappolicy.ClusterRoles()
          /home/prow/go/src/k8s.io/kubernetes/plugin/pkg/auth/authorizer/rbac/bootstrappolicy/policy.go:404 +0x2c13
    ...
    Previous write at 0x000008e5e5b0 by goroutine 123:
      slices.insertionSortOrdered[go.shape.string]()
          /home/prow/go/src/k8s.io/kubernetes/_output/local/go/cache/mod/golang.org/toolchain@v0.0.1-go1.25.6.linux-amd64/src/slices/zsortordered.go:15 +0x2f9
      slices.pdqsortOrdered[go.shape.string]()
          /home/prow/go/src/k8s.io/kubernetes/_output/local/go/cache/mod/golang.org/toolchain@v0.0.1-go1.25.6.linux-amd64/src/slices/zsortordered.go:75 +0x6c4
      slices.Sort[go.shape.[]string,go.shape.string]()
          /home/prow/go/src/k8s.io/kubernetes/_output/local/go/cache/mod/golang.org/toolchain@v0.0.1-go1.25.6.linux-amd64/src/slices/sort.go:18 +0x64
      sort.Strings()
          /home/prow/go/src/k8s.io/kubernetes/_output/local/go/cache/mod/golang.org/toolchain@v0.0.1-go1.25.6.linux-amd64/src/sort/sort.go:181 +0xe
      k8s.io/kubernetes/pkg/apis/rbac/v1.(*PolicyRuleBuilder).Rule()
          /home/prow/go/src/k8s.io/kubernetes/pkg/apis/rbac/v1/helpers.go:98 +0x2c9
      k8s.io/kubernetes/pkg/apis/rbac/v1.(*PolicyRuleBuilder).RuleOrDie()
          /home/prow/go/src/k8s.io/kubernetes/pkg/apis/rbac/v1/helpers.go:65 +0x2f44
      k8s.io/kubernetes/plugin/pkg/auth/authorizer/rbac/bootstrappolicy.ClusterRoles()
          /home/prow/go/src/k8s.io/kubernetes/plugin/pkg/auth/authorizer/rbac/bootstrappolicy/policy.go:404 +0x2c13

Seen in test/integration/apiserver/oidc.

2026-02-03 15:46:33 +01:00