Merge pull request #106448 from aojea/hlee/issue-103721/staticcheck

use golangci-lint

.golangci.yaml

@@ -0,0 +1,39 @@
+run:
+  timeout: 30m
+  skip-files:
+    - "^zz_generated.*"
+
+issues:
+  max-same-issues: 0
+  # Excluding configuration per-path, per-linter, per-text and per-source
+  exclude-rules:
+    # exclude ineffassing linter for generated files for conversion
+    - path: conversion\.go
+      linters:
+        - ineffassign
+
+linters:
+  disable-all: true
+  enable: # please keep this alphabetized
+  # Don't use soon to deprecated[1] linters that lead to false
+  # https://github.com/golangci/golangci-lint/issues/1841
+  # - deadcode
+  # - structcheck
+  # - varcheck
+    - ineffassign
+    - staticcheck
+    - unused
+
+linters-settings: # please keep this alphabetized
+  staticcheck:
+    go: "1.17"
+    checks: [
+      "all",
+      "-S1*",    # TODO(fix) Omit code simplifications for now.
+      "-ST1*",   # Mostly stylistic, redundant w/ golint
+      "-SA5011", # TODO(fix) Possible nil pointer dereference
+      "-SA1019", # TODO(fix) Using a deprecated function, variable, constant or field
+      "-SA2002"  # TODO(fix) Called testing.T.FailNow or SkipNow in a goroutine, which isn’t allowed
+    ]
+  unused:
+    go: "1.17"

cmd/kube-proxy/app/server.go

@@ -165,9 +165,9 @@ func (o *Options) AddFlags(fs *pflag.FlagSet) {
 
 	fs.BoolVar(&o.CleanupAndExit, "cleanup", o.CleanupAndExit, "If true cleanup iptables and ipvs rules and exit.")
 
-	fs.Var(utilflag.IPVar{Val: &o.config.BindAddress}, "bind-address", "The IP address for the proxy server to serve on (set to '0.0.0.0' for all IPv4 interfaces and '::' for all IPv6 interfaces)")
+	fs.Var(&utilflag.IPVar{Val: &o.config.BindAddress}, "bind-address", "The IP address for the proxy server to serve on (set to '0.0.0.0' for all IPv4 interfaces and '::' for all IPv6 interfaces)")
-	fs.Var(utilflag.IPPortVar{Val: &o.config.HealthzBindAddress}, "healthz-bind-address", "The IP address with port for the health check server to serve on (set to '0.0.0.0:10256' for all IPv4 interfaces and '[::]:10256' for all IPv6 interfaces). Set empty to disable.")
+	fs.Var(&utilflag.IPPortVar{Val: &o.config.HealthzBindAddress}, "healthz-bind-address", "The IP address with port for the health check server to serve on (set to '0.0.0.0:10256' for all IPv4 interfaces and '[::]:10256' for all IPv6 interfaces). Set empty to disable.")
-	fs.Var(utilflag.IPPortVar{Val: &o.config.MetricsBindAddress}, "metrics-bind-address", "The IP address with port for the metrics server to serve on (set to '0.0.0.0:10249' for all IPv4 interfaces and '[::]:10249' for all IPv6 interfaces). Set empty to disable.")
+	fs.Var(&utilflag.IPPortVar{Val: &o.config.MetricsBindAddress}, "metrics-bind-address", "The IP address with port for the metrics server to serve on (set to '0.0.0.0:10249' for all IPv4 interfaces and '[::]:10249' for all IPv6 interfaces). Set empty to disable.")
 	fs.BoolVar(&o.config.BindAddressHardFail, "bind-address-hard-fail", o.config.BindAddressHardFail, "If true kube-proxy will treat failure to bind to a port as fatal and exit")
 	fs.Var(utilflag.PortRangeVar{Val: &o.config.PortRange}, "proxy-port-range", "Range of host ports (beginPort-endPort, single port or beginPort+offset, inclusive) that may be consumed in order to proxy service traffic. If (unspecified, 0, or 0-0) then ports will be randomly chosen.")
 	fs.Var(&o.config.Mode, "proxy-mode", "Which proxy mode to use: 'userspace' (older) or 'iptables' (faster) or 'ipvs' or 'kernelspace' (windows). If blank, use the best-available proxy (currently iptables). If the iptables proxy is selected, regardless of how, but the system's kernel or iptables versions are insufficient, this always falls back to the userspace proxy.")
@@ -623,7 +623,7 @@ func serveMetrics(bindAddress, proxyMode string, enableProfiling bool, errCh cha
 		fmt.Fprintf(w, "%s", proxyMode)
 	})
 
-	//lint:ignore SA1019 See the Metrics Stability Migration KEP
+	//nolint:staticcheck // SA1019 See the Metrics Stability Migration KEP
 	proxyMux.Handle("/metrics", legacyregistry.Handler())
 
 	if enableProfiling {

cmd/kube-scheduler/app/config/config.go

@@ -44,7 +44,7 @@ type Config struct {
 	InformerFactory    informers.SharedInformerFactory
 	DynInformerFactory dynamicinformer.DynamicSharedInformerFactory
 
-	//lint:ignore SA1019 this deprecated field still needs to be used for now. It will be removed once the migration is done.
+	//nolint:staticcheck // SA1019 this deprecated field still needs to be used for now. It will be removed once the migration is done.
 	EventBroadcaster events.EventBroadcasterAdapter
 
 	// LeaderElection is optional.

cmd/kubeadm/app/preflight/checks.go

@@ -808,10 +808,9 @@ func getEtcdVersionResponse(client *http.Client, url string, target interface{})
 				loopCount--
 				return false, err
 			}
-			//lint:ignore SA5011 If err != nil we are already returning.
 			defer r.Body.Close()
 
-			if r != nil && r.StatusCode >= 500 && r.StatusCode <= 599 {
+			if r.StatusCode >= 500 && r.StatusCode <= 599 {
 				loopCount--
 				return false, errors.Errorf("server responded with non-successful status: %s", r.Status)
 			}

cmd/kubelet/app/options/options.go

@@ -405,7 +405,7 @@ func AddKubeletConfigFlags(mainfs *pflag.FlagSet, c *kubeletconfig.KubeletConfig
 	fs.DurationVar(&c.HTTPCheckFrequency.Duration, "http-check-frequency", c.HTTPCheckFrequency.Duration, "Duration between checking http for new data")
 	fs.StringVar(&c.StaticPodURL, "manifest-url", c.StaticPodURL, "URL for accessing additional Pod specifications to run")
 	fs.Var(cliflag.NewColonSeparatedMultimapStringString(&c.StaticPodURLHeader), "manifest-url-header", "Comma-separated list of HTTP headers to use when accessing the url provided to --manifest-url. Multiple headers with the same name will be added in the same order provided. This flag can be repeatedly invoked. For example: --manifest-url-header 'a:hello,b:again,c:world' --manifest-url-header 'b:beautiful'")
-	fs.Var(utilflag.IPVar{Val: &c.Address}, "address", "The IP address for the Kubelet to serve on (set to '0.0.0.0' or '::' for listening in all interfaces and IP families)")
+	fs.Var(&utilflag.IPVar{Val: &c.Address}, "address", "The IP address for the Kubelet to serve on (set to '0.0.0.0' or '::' for listening in all interfaces and IP families)")
 	fs.Int32Var(&c.Port, "port", c.Port, "The port for the Kubelet to serve on.")
 	fs.Int32Var(&c.ReadOnlyPort, "read-only-port", c.ReadOnlyPort, "The read-only port for the Kubelet to serve on with no authentication/authorization (set to 0 to disable)")
 
@@ -459,7 +459,7 @@ func AddKubeletConfigFlags(mainfs *pflag.FlagSet, c *kubeletconfig.KubeletConfig
 	fs.BoolVar(&c.EnableDebuggingHandlers, "enable-debugging-handlers", c.EnableDebuggingHandlers, "Enables server endpoints for log collection and local running of containers and commands")
 	fs.BoolVar(&c.EnableContentionProfiling, "contention-profiling", c.EnableContentionProfiling, "Enable lock contention profiling, if profiling is enabled")
 	fs.Int32Var(&c.HealthzPort, "healthz-port", c.HealthzPort, "The port of the localhost healthz endpoint (set to 0 to disable)")
-	fs.Var(utilflag.IPVar{Val: &c.HealthzBindAddress}, "healthz-bind-address", "The IP address for the healthz server to serve on (set to '0.0.0.0' or '::' for listening in all interfaces and IP families)")
+	fs.Var(&utilflag.IPVar{Val: &c.HealthzBindAddress}, "healthz-bind-address", "The IP address for the healthz server to serve on (set to '0.0.0.0' or '::' for listening in all interfaces and IP families)")
 	fs.Int32Var(&c.OOMScoreAdj, "oom-score-adj", c.OOMScoreAdj, "The oom-score-adj value for kubelet process. Values must be within the range [-1000, 1000]")
 	fs.StringVar(&c.ClusterDomain, "cluster-domain", c.ClusterDomain, "Domain for this cluster.  If set, kubelet will configure all containers to search this domain in addition to the host's search domains")
 

hack/verify-golangci-lint.sh

@@ -43,11 +43,38 @@ popd >/dev/null
 
 cd "${KUBE_ROOT}"
 
-echo 'running golangci-lint '
+# The config is in ${KUBE_ROOT}/.golangci.yaml
-golangci-lint run \
+echo 'running golangci-lint ' >&2
-  --timeout 30m \
+res=0
-  --disable-all \
+if [[ "$#" -gt 0 ]]; then
-  -E deadcode \
+    golangci-lint run "$@" >&2 || res=$?
-  -E unused \
+else
-  -E varcheck \
+    golangci-lint run ./... >&2 || res=$?
-  -E ineffassign
+    for d in staging/src/k8s.io/*; do
+        MODPATH="staging/src/k8s.io/$(basename "${d}")"
+        echo "running golangci-lint for ${KUBE_ROOT}/${MODPATH}"
+        pushd "${KUBE_ROOT}/${MODPATH}" >/dev/null
+            golangci-lint --path-prefix "${MODPATH}" run ./... >&2 || res=$?
+        popd >/dev/null
+    done
+fi
+
+# print a message based on the result
+if [ "$res" -eq 0 ]; then
+  echo 'Congratulations! All files are passing lint :-)'
+else
+  {
+    echo
+    echo 'Please review the above warnings. You can test via "./hack/verify-golangci-lint.sh"'
+    echo 'If the above warnings do not make sense, you can exempt this warning with a comment'
+    echo ' (if your reviewer is okay with it).'
+    echo 'In general please prefer to fix the error, we have already disabled specific lints'
+    echo ' that the project chooses to ignore.'
+    echo 'See: https://golangci-lint.run/usage/false-positives/'
+    echo
+  } >&2
+  exit 1
+fi
+
+# preserve the result
+exit "$res"

hack/verify-staticcheck.sh

@@ -1,177 +0,0 @@
-#!/usr/bin/env bash
-
-# Copyright 2014 The Kubernetes Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# This script lints each package by `staticcheck`.
-# Usage: `hack/verify-staticcheck.sh`.
-# NOTE: To ignore issues detected a package, add it to the
-# `.staticcheck_failures` blacklist.
-
-set -o errexit
-set -o nounset
-set -o pipefail
-
-KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
-source "${KUBE_ROOT}/hack/lib/init.sh"
-source "${KUBE_ROOT}/hack/lib/util.sh"
-
-kube::golang::verify_go_version
-
-FOCUS="${1:-}"
-FOCUS="${FOCUS%/}" # Remove the ending "/"
-
-# See https://staticcheck.io/docs/checks
-CHECKS=(
-  "all"
-  "-S1*"    # Omit code simplifications for now.
-  "-ST1*"   # Mostly stylistic, redundant w/ golint
-  "-SA5011" # Possible nil pointer dereference
-)
-export IFS=','; checks="${CHECKS[*]}"; unset IFS
-
-# Packages to ignore due to bugs in staticcheck
-# NOTE: To ignore issues detected a package, add it to the .staticcheck_failures blacklist
-IGNORE=(
-  "vendor/k8s.io/kubectl/pkg/cmd/edit/testdata"  # golang/go#24854, dominikh/go-tools#565
-  "cluster/addons/fluentd-elasticsearch/es-image" # cannot traverse go modules
-)
-export IFS='|'; ignore_pattern="^(${IGNORE[*]})\$"; unset IFS
-
-# Ensure that we find the binaries we build before anything else.
-export GOBIN="${KUBE_OUTPUT_BINPATH}"
-PATH="${GOBIN}:${PATH}"
-
-# Install staticcheck
-pushd "${KUBE_ROOT}/hack/tools" >/dev/null
-  GO111MODULE=on go install honnef.co/go/tools/cmd/staticcheck
-popd >/dev/null
-
-cd "${KUBE_ROOT}"
-
-# Check that the file is in alphabetical order
-failure_file="${KUBE_ROOT}/hack/.staticcheck_failures"
-kube::util::check-file-in-alphabetical-order "${failure_file}"
-
-function normalize_package() {
-  pkg="${1}"
-  if [[ "${pkg}" == "vendor/"* || "${pkg}" == "k8s.io/"* ]]; then
-    # Treat this as a full package path (stripping vendor prefix if needed)
-    echo "${pkg#"vendor/"}"
-  else
-    # Treat this as a relative package path to k8s.io/kubernetes
-    echo "./${pkg}"
-  fi
-}
-
-all_packages=()
-while IFS='' read -r line; do
-  line=$(normalize_package "${line}")
-  all_packages+=("${line}")
-done < <( hack/make-rules/helpers/cache_go_dirs.sh "${KUBE_ROOT}/_tmp/all_go_dirs" |
-            grep "^${FOCUS:-.}" |
-            grep -vE "(third_party|generated|clientset_generated|hack|testdata|/_)" |
-            grep -vE "$ignore_pattern" )
-
-failing_packages=()
-if [[ -z $FOCUS ]]; then # Ignore failing_packages in FOCUS mode
-  while IFS='' read -r line; do failing_packages+=("$line"); done < <(cat "$failure_file")
-fi
-errors=()
-not_failing=()
-
-while read -r error; do
-  # Ignore compile errors caused by lack of files due to build tags.
-  # TODO: Add verification for these directories.
-  ignore_no_files="^-: build constraints exclude all Go files in .* \(compile\)"
-  if [[ $error =~ $ignore_no_files ]]; then
-    continue
-  fi
-
-  # Ignore the errors caused by the generated files
-  ignore_gen_files=".*/zz_generated\.[a-z]+\.go:.*"
-  if [[ $error =~ $ignore_gen_files ]]; then
-    continue
-  fi
-
-  file="${error%%:*}"
-  pkg="$(dirname "$file")"
-  kube::util::array_contains "$pkg" "${failing_packages[@]}" && in_failing=$? || in_failing=$?
-  if [[ "${in_failing}" -ne "0" ]]; then
-    errors+=( "${error}" )
-  elif [[ "${in_failing}" -eq "0" ]]; then
-    really_failing+=( "$pkg" )
-  fi
-done < <(GO111MODULE=on GOOS=linux staticcheck -checks "${checks}" "${all_packages[@]}" 2>/dev/null || true)
-
-export IFS=$'\n'  # Expand ${really_failing[*]} to separate lines
-kube::util::read-array really_failing < <(sort -u <<<"${really_failing[*]}")
-unset IFS
-for pkg in "${failing_packages[@]}"; do
-  if ! kube::util::array_contains "$pkg" "${really_failing[@]}"; then
-    not_failing+=( "$pkg" )
-  fi
-done
-
-# Check that all failing_packages actually still exist
-gone=()
-for p in "${failing_packages[@]}"; do
-  p=$(normalize_package "${p}")
-  if ! kube::util::array_contains "${p}" "${all_packages[@]}"; then
-    gone+=( "${p}" )
-  fi
-done
-
-# Check to be sure all the packages that should pass check are.
-if [ ${#errors[@]} -eq 0 ]; then
-  echo 'Congratulations!  All Go source files have passed staticcheck.'
-else
-  {
-    echo "Errors from staticcheck:"
-    for err in "${errors[@]}"; do
-      echo "$err"
-    done
-    echo
-    echo 'Please review the above warnings. You can test via:'
-    echo '  hack/verify-staticcheck.sh <failing package>'
-    echo 'If the above warnings do not make sense, you can exempt the line or file. See:'
-    echo '  https://staticcheck.io/docs/#ignoring-problems'
-    echo
-  } >&2
-  exit 1
-fi
-
-if [[ ${#not_failing[@]} -gt 0 ]]; then
-  {
-    echo "Some packages in hack/.staticcheck_failures are passing staticcheck. Please remove them."
-    echo
-    for p in "${not_failing[@]}"; do
-      echo "  $p"
-    done
-    echo
-  } >&2
-  exit 1
-fi
-
-if [[ ${#gone[@]} -gt 0 ]]; then
-  {
-    echo "Some packages in hack/.staticcheck_failures do not exist anymore. Please remove them."
-    echo
-    for p in "${gone[@]}"; do
-      echo "  $p"
-    done
-    echo
-  } >&2
-  exit 1
-fi

pkg/kubelet/cm/cpumanager/state/checkpoint.go

@@ -53,7 +53,7 @@ type CPUManagerCheckpointV2 = CPUManagerCheckpoint
 
 // NewCPUManagerCheckpoint returns an instance of Checkpoint
 func NewCPUManagerCheckpoint() *CPUManagerCheckpoint {
-	//lint:ignore unexported-type-in-api user-facing error message
+	//nolint:staticcheck // unexported-type-in-api user-facing error message
 	return newCPUManagerCheckpointV2()
 }
 

pkg/kubelet/cm/cpumanager/state/state_checkpoint.go

@@ -54,7 +54,7 @@ func NewCheckpointState(stateDir, checkpointName, policyName string, initialCont
 	}
 
 	if err := stateCheckpoint.restoreState(); err != nil {
-		//lint:ignore ST1005 user-facing error message
+		//nolint:staticcheck // ST1005 user-facing error message
 		return nil, fmt.Errorf("could not restore state from checkpoint: %v, please drain this node and delete the CPU manager checkpoint file %q before restarting Kubelet",
 			err, path.Join(stateDir, checkpointName))
 	}

pkg/kubelet/cm/memorymanager/state/checkpoint.go

@@ -35,7 +35,7 @@ type MemoryManagerCheckpoint struct {
 
 // NewMemoryManagerCheckpoint returns an instance of Checkpoint
 func NewMemoryManagerCheckpoint() *MemoryManagerCheckpoint {
-	//lint:ignore unexported-type-in-api user-facing error message
+	//nolint:staticcheck // unexported-type-in-api user-facing error message
 	return &MemoryManagerCheckpoint{
 		Entries:      ContainerMemoryAssignments{},
 		MachineState: NUMANodeMap{},

pkg/kubelet/cm/memorymanager/state/state_checkpoint.go

@@ -50,7 +50,7 @@ func NewCheckpointState(stateDir, checkpointName, policyName string) (State, err
 	}
 
 	if err := stateCheckpoint.restoreState(); err != nil {
-		//lint:ignore ST1005 user-facing error message
+		//nolint:staticcheck // ST1005 user-facing error message
 		return nil, fmt.Errorf("could not restore state from checkpoint: %v, please drain this node and delete the memory manager checkpoint file %q before restarting Kubelet",
 			err, path.Join(stateDir, checkpointName))
 	}

pkg/kubelet/dockershim/docker_container.go

@@ -181,7 +181,7 @@ func (ds *dockerService) CreateContainer(_ context.Context, r *runtimeapi.Create
 	}
 	hc.Resources.Devices = devices
 
-	//lint:ignore SA1019 backwards compatibility
+	//nolint:staticcheck // SA1019 backwards compatibility
 	securityOpts, err := ds.getSecurityOpts(config.GetLinux().GetSecurityContext().GetSeccompProfilePath(), securityOptSeparator)
 	if err != nil {
 		return nil, fmt.Errorf("failed to generate security options for container %q: %v", config.Metadata.Name, err)

pkg/kubelet/server/server.go

@@ -353,7 +353,7 @@ func (s *Server) InstallDefaultHandlers() {
 	s.addMetricsBucketMatcher("metrics/cadvisor")
 	s.addMetricsBucketMatcher("metrics/probes")
 	s.addMetricsBucketMatcher("metrics/resource")
-	//lint:ignore SA1019 https://github.com/kubernetes/enhancements/issues/1206
+	//nolint:staticcheck // SA1019 https://github.com/kubernetes/enhancements/issues/1206
 	s.restfulCont.Handle(metricsPath, legacyregistry.Handler())
 
 	// cAdvisor metrics are exposed under the secured handler as well

pkg/kubelet/stats/cri_stats_provider.go

@@ -68,9 +68,8 @@ type criStatsProvider struct {
 	imageService internalapi.ImageManagerService
 	// hostStatsProvider is used to get the status of the host filesystem consumed by pods.
 	hostStatsProvider HostStatsProvider
-	//lint:ignore U1000 We can't import hcsshim due to Build constraints in hcsshim
 	// windowsNetworkStatsProvider is used by kubelet to gather networking stats on Windows
-	windowsNetworkStatsProvider interface{}
+	windowsNetworkStatsProvider interface{} //nolint:unused // U1000 We can't import hcsshim due to Build constraints in hcsshim
 	// clock is used report current time
 	clock clock.Clock
 

pkg/kubelet/status/status_manager.go

@@ -157,8 +157,10 @@ func (m *manager) Start() {
 	}
 
 	klog.InfoS("Starting to sync pod status with apiserver")
-	//lint:ignore SA1015 Ticker can link since this is only called once and doesn't handle termination.
+
-	syncTicker := time.Tick(syncPeriod)
+	//nolint:staticcheck // SA1015 Ticker can leak since this is only called once and doesn't handle termination.
+	syncTicker := time.NewTicker(syncPeriod).C
+
 	// syncPod and syncBatch share the same go routine to avoid sync races.
 	go wait.Forever(func() {
 		for {

pkg/registry/batch/job/storage/storage.go

@@ -18,6 +18,7 @@ package storage
 
 import (
 	"context"
+
 	"k8s.io/apimachinery/pkg/apis/meta/internalversion"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
@@ -96,7 +97,7 @@ func (r *REST) Categories() []string {
 }
 
 func (r *REST) Delete(ctx context.Context, name string, deleteValidation rest.ValidateObjectFunc, options *metav1.DeleteOptions) (runtime.Object, bool, error) {
-	//lint:ignore SA1019 backwards compatibility
+	//nolint:staticcheck // SA1019 backwards compatibility
 	//nolint: staticcheck
 	if options != nil && options.PropagationPolicy == nil && options.OrphanDependents == nil &&
 		job.Strategy.DefaultGarbageCollectionPolicy(ctx) == rest.OrphanDependents {
@@ -108,8 +109,7 @@ func (r *REST) Delete(ctx context.Context, name string, deleteValidation rest.Va
 }
 
 func (r *REST) DeleteCollection(ctx context.Context, deleteValidation rest.ValidateObjectFunc, deleteOptions *metav1.DeleteOptions, listOptions *internalversion.ListOptions) (runtime.Object, error) {
-	//lint:ignore SA1019 backwards compatibility
+	//nolint:staticcheck // SA1019 backwards compatibility
-	//nolint: staticcheck
 	if deleteOptions.PropagationPolicy == nil && deleteOptions.OrphanDependents == nil &&
 		job.Strategy.DefaultGarbageCollectionPolicy(ctx) == rest.OrphanDependents {
 		// Throw a warning if delete options are not explicitly set as Job deletion strategy by default is orphaning

pkg/registry/core/namespace/storage/storage.go

@@ -253,9 +253,8 @@ func ShouldDeleteNamespaceDuringUpdate(ctx context.Context, key string, obj, exi
 }
 
 func shouldHaveOrphanFinalizer(options *metav1.DeleteOptions, haveOrphanFinalizer bool) bool {
-	//lint:ignore SA1019 backwards compatibility
+	//nolint:staticcheck // SA1019 backwards compatibility
 	if options.OrphanDependents != nil {
-		//lint:ignore SA1019 backwards compatibility
 		return *options.OrphanDependents
 	}
 	if options.PropagationPolicy != nil {
@@ -265,9 +264,8 @@ func shouldHaveOrphanFinalizer(options *metav1.DeleteOptions, haveOrphanFinalize
 }
 
 func shouldHaveDeleteDependentsFinalizer(options *metav1.DeleteOptions, haveDeleteDependentsFinalizer bool) bool {
-	//lint:ignore SA1019 backwards compatibility
+	//nolint:staticcheck // SA1019 backwards compatibility
 	if options.OrphanDependents != nil {
-		//lint:ignore SA1019 backwards compatibility
 		return *options.OrphanDependents == false
 	}
 	if options.PropagationPolicy != nil {

pkg/util/coverage/fake_test_deps.go

@@ -23,33 +23,41 @@ import (
 // This is an implementation of testing.testDeps. It doesn't need to do anything, because
 // no tests are actually run. It does need a concrete implementation of at least ImportPath,
 // which is called unconditionally when running tests.
-//lint:ignore U1000 see comment above, we know it's unused normally.
+//nolint:unused // U1000 see comment above, we know it's unused normally.
 type fakeTestDeps struct{}
 
+//nolint:unused // U1000 see comment above, we know it's unused normally.
 func (fakeTestDeps) ImportPath() string {
 	return ""
 }
 
+//nolint:unused // U1000 see comment above, we know it's unused normally.
 func (fakeTestDeps) MatchString(pat, str string) (bool, error) {
 	return false, nil
 }
 
+//nolint:unused // U1000 see comment above, we know it's unused normally.
 func (fakeTestDeps) StartCPUProfile(io.Writer) error {
 	return nil
 }
 
+//nolint:unused // U1000 see comment above, we know it's unused normally.
 func (fakeTestDeps) StopCPUProfile() {}
 
+//nolint:unused // U1000 see comment above, we know it's unused normally.
 func (fakeTestDeps) StartTestLog(io.Writer) {}
 
+//nolint:unused // U1000 see comment above, we know it's unused normally.
 func (fakeTestDeps) StopTestLog() error {
 	return nil
 }
 
+//nolint:unused // U1000 see comment above, we know it's unused normally.
 func (fakeTestDeps) WriteHeapProfile(io.Writer) error {
 	return nil
 }
 
+//nolint:unused // U1000 see comment above, we know it's unused normally.
 func (fakeTestDeps) WriteProfileTo(string, io.Writer, int) error {
 	return nil
 }

pkg/util/flag/flags.go

@@ -50,7 +50,7 @@ type IPVar struct {
 }
 
 // Set sets the flag value
-func (v IPVar) Set(s string) error {
+func (v *IPVar) Set(s string) error {
 	if len(s) == 0 {
 		v.Val = nil
 		return nil
@@ -67,7 +67,7 @@ func (v IPVar) Set(s string) error {
 }
 
 // String returns the flag value
-func (v IPVar) String() string {
+func (v *IPVar) String() string {
 	if v.Val == nil {
 		return ""
 	}
@@ -75,7 +75,7 @@ func (v IPVar) String() string {
 }
 
 // Type gets the flag type
-func (v IPVar) Type() string {
+func (v *IPVar) Type() string {
 	return "ip"
 }
 
@@ -85,7 +85,7 @@ type IPPortVar struct {
 }
 
 // Set sets the flag value
-func (v IPPortVar) Set(s string) error {
+func (v *IPPortVar) Set(s string) error {
 	if len(s) == 0 {
 		v.Val = nil
 		return nil
@@ -119,7 +119,7 @@ func (v IPPortVar) Set(s string) error {
 }
 
 // String returns the flag value
-func (v IPPortVar) String() string {
+func (v *IPPortVar) String() string {
 	if v.Val == nil {
 		return ""
 	}
@@ -127,7 +127,7 @@ func (v IPPortVar) String() string {
 }
 
 // Type gets the flag type
-func (v IPPortVar) Type() string {
+func (v *IPPortVar) Type() string {
 	return "ipport"
 }
 

pkg/util/flag/flags_test.go

@@ -51,7 +51,7 @@ func TestIPVar(t *testing.T) {
 	for _, tc := range testCases {
 		fs := pflag.NewFlagSet("blah", pflag.PanicOnError)
 		ip := defaultIP
-		fs.Var(IPVar{&ip}, "ip", "the ip")
+		fs.Var(&IPVar{&ip}, "ip", "the ip")
 
 		var err error
 		func() {
@@ -145,7 +145,7 @@ func TestIPPortVar(t *testing.T) {
 	for _, tc := range testCases {
 		fs := pflag.NewFlagSet("blah", pflag.PanicOnError)
 		ipport := defaultIPPort
-		fs.Var(IPPortVar{&ipport}, "ipport", "the ip:port")
+		fs.Var(&IPPortVar{&ipport}, "ipport", "the ip:port")
 
 		var err error
 		func() {

pkg/volume/util/fsquota/quota_linux.go

@@ -304,8 +304,7 @@ func SupportsQuotas(m mount.Interface, path string) (bool, error) {
 // AssignQuota chooses the quota ID based on the pod UID and path.
 // If the pod UID is identical to another one known, it may (but presently
 // doesn't) choose the same quota ID as other volumes in the pod.
-//lint:ignore SA4009 poduid is overwritten by design, see comment below
+func AssignQuota(m mount.Interface, path string, poduid types.UID, bytes *resource.Quantity) error { //nolint:staticcheck // SA4009 poduid is overwritten by design, see comment below
-func AssignQuota(m mount.Interface, path string, poduid types.UID, bytes *resource.Quantity) error {
 	if bytes == nil {
 		return fmt.Errorf("attempting to assign null quota to %s", path)
 	}
@@ -320,7 +319,7 @@ func AssignQuota(m mount.Interface, path string, poduid types.UID, bytes *resour
 	// volumes in a pod, we can simply remove this line of code.
 	// If and when we decide permanently that we're going to adopt
 	// one quota per volume, we can rip all of the pod code out.
-	poduid = types.UID(uuid.NewUUID())
+	poduid = types.UID(uuid.NewUUID()) //nolint:staticcheck // SA4009 poduid is overwritten by design, see comment above
 	if pod, ok := dirPodMap[path]; ok && pod != poduid {
 		return fmt.Errorf("requesting quota on existing directory %s but different pod %s %s", path, pod, poduid)
 	}

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/schema/pruning/algorithm_test.go

@@ -636,7 +636,7 @@ func BenchmarkDeepCopy(b *testing.B) {
 
 	b.StartTimer()
 	for i := 0; i < b.N; i++ {
-		//lint:ignore SA4010 the result of append is never used, it's acceptable since in benchmark testing.
+		//nolint:staticcheck //iccheck // SA4010 the result of append is never used, it's acceptable since in benchmark testing.
 		instances = append(instances, runtime.DeepCopyJSON(obj))
 	}
 }

staging/src/k8s.io/apiextensions-apiserver/pkg/controller/openapi/builder/builder.go

@@ -55,7 +55,6 @@ const (
 	objectMetaSchemaRef = "#/definitions/io.k8s.apimachinery.pkg.apis.meta.v1.ObjectMeta"
 	listMetaSchemaRef   = "#/definitions/io.k8s.apimachinery.pkg.apis.meta.v1.ListMeta"
 
-	listMetaType   = "k8s.io/apimachinery/pkg/apis/meta/v1.ListMeta"
 	typeMetaType   = "k8s.io/apimachinery/pkg/apis/meta/v1.TypeMeta"
 	objectMetaType = "k8s.io/apimachinery/pkg/apis/meta/v1.ObjectMeta"
 

staging/src/k8s.io/apimachinery/pkg/api/apitesting/roundtrip/roundtrip.go

@@ -25,7 +25,7 @@ import (
 	"testing"
 
 	"github.com/davecgh/go-spew/spew"
-	//lint:ignore SA1019 Keep using deprecated module; it still seems to be maintained and the api of the recommended replacement differs
+	//nolint:staticcheck //iccheck // SA1019 Keep using deprecated module; it still seems to be maintained and the api of the recommended replacement differs
 	"github.com/golang/protobuf/proto"
 	fuzz "github.com/google/gofuzz"
 	flag "github.com/spf13/pflag"

staging/src/k8s.io/apimachinery/pkg/labels/selector_test.go

@@ -148,8 +148,7 @@ func expectMatchDirect(t *testing.T, selector, ls Set) {
 	}
 }
 
-//lint:ignore U1000 currently commented out in TODO of TestSetMatches
+//nolint:staticcheck,unused //iccheck // U1000 currently commented out in TODO of TestSetMatches
-//nolint:unused,deadcode
 func expectNoMatchDirect(t *testing.T, selector, ls Set) {
 	if SelectorFromSet(selector).Matches(ls) {
 		t.Errorf("Wanted '%s' to not match '%s', but it did.", selector, ls)

staging/src/k8s.io/apimachinery/pkg/runtime/serializer/streaming/streaming.go

@@ -90,7 +90,6 @@ func (d *decoder) Decode(defaults *schema.GroupVersionKind, into runtime.Object)
 			}
 			// must read the rest of the frame (until we stop getting ErrShortBuffer)
 			d.resetRead = true
-			base = 0
 			return nil, nil, ErrObjectTooLarge
 		}
 		if err != nil {

staging/src/k8s.io/apimachinery/pkg/util/framer/framer.go

@@ -132,14 +132,14 @@ func (r *jsonFrameReader) Read(data []byte) (int, error) {
 	// Return whatever remaining data exists from an in progress frame
 	if n := len(r.remaining); n > 0 {
 		if n <= len(data) {
-			//lint:ignore SA4006,SA4010 underlying array of data is modified here.
+			//nolint:staticcheck // SA4006,SA4010 underlying array of data is modified here.
 			data = append(data[0:0], r.remaining...)
 			r.remaining = nil
 			return n, nil
 		}
 
 		n = len(data)
-		//lint:ignore SA4006,SA4010 underlying array of data is modified here.
+		//nolint:staticcheck // SA4006,SA4010 underlying array of data is modified here.
 		data = append(data[0:0], r.remaining[:n]...)
 		r.remaining = r.remaining[n:]
 		return n, io.ErrShortBuffer
@@ -157,7 +157,7 @@ func (r *jsonFrameReader) Read(data []byte) (int, error) {
 	// and set m to it, which means we need to copy the partial result back into data and preserve
 	// the remaining result for subsequent reads.
 	if len(m) > n {
-		//lint:ignore SA4006,SA4010 underlying array of data is modified here.
+		//nolint:staticcheck // SA4006,SA4010 underlying array of data is modified here.
 		data = append(data[0:0], m[:n]...)
 		r.remaining = m[n:]
 		return n, io.ErrShortBuffer

staging/src/k8s.io/apimachinery/pkg/util/httpstream/spdy/roundtripper.go

@@ -183,10 +183,10 @@ func (s *SpdyRoundTripper) dial(req *http.Request) (net.Conn, error) {
 		return nil, err
 	}
 
-	//lint:ignore SA1019 ignore deprecated httputil.NewProxyClientConn
+	//nolint:staticcheck // SA1019 ignore deprecated httputil.NewProxyClientConn
 	proxyClientConn := httputil.NewProxyClientConn(proxyDialConn, nil)
 	_, err = proxyClientConn.Do(&proxyReq)
-	//lint:ignore SA1019 ignore deprecated httputil.ErrPersistEOF: it might be
+	//nolint:staticcheck // SA1019 ignore deprecated httputil.ErrPersistEOF: it might be
 	// returned from the invocation of proxyClientConn.Do
 	if err != nil && err != httputil.ErrPersistEOF {
 		return nil, err

staging/src/k8s.io/apimachinery/pkg/util/json/json_test.go

@@ -122,7 +122,7 @@ func TestEvaluateTypes(t *testing.T) {
 		},
 		{
 			In:   `-0.0`,
-			Data: float64(-0.0),
+			Data: float64(-0.0), //nolint:staticcheck // SA4026: in Go, the floating-point literal '-0.0' is the same as '0.0'
 			Out:  `-0`,
 		},
 		{

staging/src/k8s.io/apimachinery/pkg/util/strategicpatch/meta.go

@@ -31,22 +31,22 @@ type PatchMeta struct {
 	patchMergeKey   string
 }
 
-func (pm PatchMeta) GetPatchStrategies() []string {
+func (pm *PatchMeta) GetPatchStrategies() []string {
 	if pm.patchStrategies == nil {
 		return []string{}
 	}
 	return pm.patchStrategies
 }
 
-func (pm PatchMeta) SetPatchStrategies(ps []string) {
+func (pm *PatchMeta) SetPatchStrategies(ps []string) {
 	pm.patchStrategies = ps
 }
 
-func (pm PatchMeta) GetPatchMergeKey() string {
+func (pm *PatchMeta) GetPatchMergeKey() string {
 	return pm.patchMergeKey
 }
 
-func (pm PatchMeta) SetPatchMergeKey(pmk string) {
+func (pm *PatchMeta) SetPatchMergeKey(pmk string) {
 	pm.patchMergeKey = pmk
 }
 

staging/src/k8s.io/apiserver/pkg/endpoints/handlers/delete.go

@@ -143,7 +143,7 @@ func DeleteResource(r rest.GracefulDeleter, allowsOptions bool, scope *RequestSc
 		// that will break existing clients.
 		// Other cases where resource is not instantly deleted are: namespace deletion
 		// and pod graceful deletion.
-		//lint:ignore SA1019 backwards compatibility
+		//nolint:staticcheck // SA1019 backwards compatibility
 		//nolint: staticcheck
 		if !wasDeleted && options.OrphanDependents != nil && !*options.OrphanDependents {
 			status = http.StatusAccepted

staging/src/k8s.io/apiserver/pkg/endpoints/handlers/fieldmanager/fieldmanager_test.go

@@ -55,7 +55,7 @@ type fakeObjectConvertor struct {
 	apiVersion fieldpath.APIVersion
 }
 
-//lint:ignore SA4009 backwards compatibility
+//nolint:staticcheck,ineffassign // SA4009 backwards compatibility
 func (c *fakeObjectConvertor) Convert(in, out, context interface{}) error {
 	if typedValue, ok := in.(*typed.TypedValue); ok {
 		var err error

staging/src/k8s.io/apiserver/pkg/endpoints/handlers/responsewriters/errors_test.go

@@ -83,7 +83,7 @@ func TestForbidden(t *testing.T) {
 		if result != test.expected {
 			t.Errorf("Forbidden response body(%#v...)\n expected: %v\ngot:       %v", test.attributes, test.expected, result)
 		}
-		//lint:ignore SA1019 backwards compatibility
+		//nolint:staticcheck // SA1019 backwards compatibility
 		resultType := observer.HeaderMap.Get("Content-Type")
 		if resultType != test.contentType {
 			t.Errorf("Forbidden content type(%#v...) != %#v, got %#v", test.attributes, test.expected, result)

staging/src/k8s.io/apiserver/pkg/endpoints/installer.go

@@ -217,7 +217,7 @@ func (a *APIInstaller) registerResourceHandlers(path string, storage rest.Storag
 	isSubresource := len(subresource) > 0
 
 	// If there is a subresource, namespace scoping is defined by the parent resource
-	namespaceScoped := true
+	var namespaceScoped bool
 	if isSubresource {
 		parentStorage, ok := a.group.Storage[resource]
 		if !ok {

staging/src/k8s.io/apiserver/pkg/endpoints/responsewriter/wrapper.go

@@ -120,7 +120,7 @@ func GetOriginal(w http.ResponseWriter) http.ResponseWriter {
 	return GetOriginal(inner)
 }
 
-//lint:ignore SA1019 backward compatibility
+//nolint:staticcheck // SA1019
 var _ http.CloseNotifier = outerWithCloseNotifyAndFlush{}
 var _ http.Flusher = outerWithCloseNotifyAndFlush{}
 var _ http.ResponseWriter = outerWithCloseNotifyAndFlush{}

staging/src/k8s.io/apiserver/pkg/endpoints/responsewriter/wrapper_test.go

@@ -61,7 +61,7 @@ func TestWithHTTP1(t *testing.T) {
 		// so each decorator is expected to tick the count by one for each method.
 		defer counterGot.assert(t, &counter{FlushInvoked: 3, CloseNotifyInvoked: 3, HijackInvoked: 3})
 
-		//lint:ignore SA1019 backward compatibility
+		//nolint:staticcheck // SA1019
 		w.(http.CloseNotifier).CloseNotify()
 		w.(http.Flusher).Flush()
 
@@ -116,7 +116,7 @@ func TestWithHTTP2(t *testing.T) {
 		// so each decorator is expected to tick the count by one for each method.
 		defer counterGot.assert(t, &counter{FlushInvoked: 3, CloseNotifyInvoked: 3, HijackInvoked: 0})
 
-		//lint:ignore SA1019 backward compatibility
+		//nolint:staticcheck // SA1019
 		w.(http.CloseNotifier).CloseNotify()
 		w.(http.Flusher).Flush()
 
@@ -242,7 +242,7 @@ func assertCloseNotifierFlusherHijacker(t *testing.T, hijackableExpected bool, w
 		t.Errorf("Expected the http.ResponseWriter object to implement http.Flusher")
 	}
 
-	//lint:ignore SA1019 backward compatibility
+	//nolint:staticcheck // SA1019
 	if _, ok := w.(http.CloseNotifier); !ok {
 		t.Errorf("Expected the http.ResponseWriter object to implement http.CloseNotifier")
 	}
@@ -293,6 +293,6 @@ func (fw *fakeResponseWriterDecorator) CloseNotify() <-chan bool {
 	if fw.counter != nil {
 		fw.counter.CloseNotifyInvoked++
 	}
-	//lint:ignore SA1019 backward compatibility
+	//nolint:staticcheck // SA1019
 	return fw.ResponseWriter.(http.CloseNotifier).CloseNotify()
 }

staging/src/k8s.io/apiserver/pkg/registry/generic/registry/store.go

@@ -753,9 +753,9 @@ func shouldOrphanDependents(ctx context.Context, e *Store, accessor metav1.Objec
 	}
 
 	// An explicit policy was set at deletion time, that overrides everything
-	//lint:ignore SA1019 backwards compatibility
+	//nolint:staticcheck // SA1019 backwards compatibility
 	if options != nil && options.OrphanDependents != nil {
-		//lint:ignore SA1019 backwards compatibility
+		//nolint:staticcheck // SA1019 backwards compatibility
 		return *options.OrphanDependents
 	}
 	if options != nil && options.PropagationPolicy != nil {
@@ -796,7 +796,7 @@ func shouldDeleteDependents(ctx context.Context, e *Store, accessor metav1.Objec
 	}
 
 	// If an explicit policy was set at deletion time, that overrides both
-	//lint:ignore SA1019 backwards compatibility
+	//nolint:staticcheck // SA1019 backwards compatibility
 	if options != nil && options.OrphanDependents != nil {
 		return false
 	}

staging/src/k8s.io/apiserver/pkg/server/filters/goaway_test.go

@@ -105,10 +105,6 @@ var (
 	// for watch request, test GOAWAY server push 1 byte in every second.
 	responseBody = []byte("hello")
 
-	// responseBodySize is the size of response body which test GOAWAY server sent for watch request,
-	// used to check if watch request was broken by GOAWAY frame.
-	responseBodySize = len(responseBody)
-
 	// requestPostBody is the request body which client must send to test GOAWAY server for POST method,
 	// otherwise, test GOAWAY server will respond 400 HTTP status code.
 	requestPostBody = responseBody

staging/src/k8s.io/client-go/discovery/discovery_client.go

@@ -27,7 +27,7 @@ import (
 	"sync"
 	"time"
 
-	//lint:ignore SA1019 Keep using module since it's still being maintained and the api of google.golang.org/protobuf/proto differs
+	//nolint:staticcheck // SA1019 Keep using module since it's still being maintained and the api of google.golang.org/protobuf/proto differs
 	"github.com/golang/protobuf/proto"
 	openapi_v2 "github.com/googleapis/gnostic/openapiv2"
 

staging/src/k8s.io/client-go/rest/request_test.go

@@ -47,7 +47,6 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/serializer"
 	"k8s.io/apimachinery/pkg/runtime/serializer/streaming"
 	"k8s.io/apimachinery/pkg/util/diff"
-	"k8s.io/apimachinery/pkg/util/httpstream"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	utilnet "k8s.io/apimachinery/pkg/util/net"
 	"k8s.io/apimachinery/pkg/watch"
@@ -1436,40 +1435,6 @@ func TestRequestStream(t *testing.T) {
 	}
 }
 
-type fakeUpgradeConnection struct{}
-
-func (c *fakeUpgradeConnection) CreateStream(headers http.Header) (httpstream.Stream, error) {
-	return nil, nil
-}
-func (c *fakeUpgradeConnection) Close() error {
-	return nil
-}
-func (c *fakeUpgradeConnection) CloseChan() <-chan bool {
-	return make(chan bool)
-}
-func (c *fakeUpgradeConnection) SetIdleTimeout(timeout time.Duration) {
-}
-
-type fakeUpgradeRoundTripper struct {
-	req  *http.Request
-	conn httpstream.Connection
-}
-
-func (f *fakeUpgradeRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
-	f.req = req
-	b := []byte{}
-	body := ioutil.NopCloser(bytes.NewReader(b))
-	resp := &http.Response{
-		StatusCode: http.StatusSwitchingProtocols,
-		Body:       body,
-	}
-	return resp, nil
-}
-
-func (f *fakeUpgradeRoundTripper) NewConnection(resp *http.Response) (httpstream.Connection, error) {
-	return f.conn, nil
-}
-
 func TestRequestDo(t *testing.T) {
 	testCases := []struct {
 		Request *Request

staging/src/k8s.io/client-go/tools/clientcmd/loader_test.go

@@ -669,7 +669,9 @@ func Example_noMergingOnExplicitPaths() {
 	}
 
 	mergedConfig, err := loadingRules.Load()
-
+	if err != nil {
+		fmt.Printf("Unexpected error: %v", err)
+	}
 	json, err := runtime.Encode(clientcmdlatest.Codec, mergedConfig)
 	if err != nil {
 		fmt.Printf("Unexpected error: %v", err)
@@ -715,7 +717,9 @@ func Example_mergingSomeWithConflict() {
 	}
 
 	mergedConfig, err := loadingRules.Load()
-
+	if err != nil {
+		fmt.Printf("Unexpected error: %v", err)
+	}
 	json, err := runtime.Encode(clientcmdlatest.Codec, mergedConfig)
 	if err != nil {
 		fmt.Printf("Unexpected error: %v", err)
@@ -774,7 +778,9 @@ func Example_mergingEverythingNoConflicts() {
 	}
 
 	mergedConfig, err := loadingRules.Load()
-
+	if err != nil {
+		fmt.Printf("Unexpected error: %v", err)
+	}
 	json, err := runtime.Encode(clientcmdlatest.Codec, mergedConfig)
 	if err != nil {
 		fmt.Printf("Unexpected error: %v", err)

staging/src/k8s.io/code-generator/cmd/go-to-protobuf/protobuf/generator.go

@@ -573,7 +573,7 @@ func protobufTagToField(tag string, field *protoField, m types.Member, t *types.
 	switch parts[0] {
 	case "varint", "fixed32", "fixed64", "bytes", "group":
 	default:
-		name := types.Name{}
+		var name types.Name
 		if last := strings.LastIndex(parts[0], "."); last != -1 {
 			prefix := parts[0][:last]
 			name = types.Name{

staging/src/k8s.io/component-base/metrics/legacyregistry/registry.go

@@ -44,9 +44,9 @@ var (
 )
 
 func init() {
-	//lint:ignore SA1019 - replacement function still calls prometheus.NewProcessCollector().
+	//nolint:staticcheck // SA1019 - replacement function still calls prometheus.NewProcessCollector().
 	RawMustRegister(prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{}))
-	//lint:ignore SA1019 - replacement function still calls prometheus.NewGoCollector().
+	//nolint:staticcheck // SA1019 - replacement function still calls prometheus.NewGoCollector().
 	RawMustRegister(prometheus.NewGoCollector())
 }
 

staging/src/k8s.io/controller-manager/app/serve.go

@@ -66,7 +66,7 @@ func NewBaseHandler(c *componentbaseconfig.DebuggingConfiguration, healthzHandle
 		routes.DebugFlags{}.Install(mux, "v", routes.StringFlagPutHandler(logs.GlogSetter))
 	}
 	configz.InstallHandler(mux)
-	//lint:ignore SA1019 See the Metrics Stability Migration KEP
+	//nolint:staticcheck // SA1019 See the Metrics Stability Migration KEP
 	mux.Handle("/metrics", legacyregistry.Handler())
 
 	return mux

staging/src/k8s.io/kubectl/pkg/cmd/taint/utils.go

@@ -146,7 +146,6 @@ func deleteTaints(taintsToRemove []corev1.Taint, newTaints *[]corev1.Taint) ([]e
 	allErrs := []error{}
 	var removed bool
 	for _, taintToRemove := range taintsToRemove {
-		removed = false
 		if len(taintToRemove.Effect) > 0 {
 			*newTaints, removed = deleteTaint(*newTaints, &taintToRemove)
 		} else {

staging/src/k8s.io/kubectl/pkg/describe/describe.go

@@ -1415,7 +1415,6 @@ func printCSIPersistentVolumeAttributesMultilineIndent(w PrefixWriter, initialIn
 		} else {
 			w.Write(LEVEL_2, "%s\n", line)
 		}
-		i++
 	}
 }
 
@@ -5111,7 +5110,6 @@ func printLabelsMultilineWithIndent(w PrefixWriter, initialIndent, title, innerI
 			w.Write(LEVEL_0, "%s", innerIndent)
 		}
 		w.Write(LEVEL_0, "%s=%s\n", key, labels[key])
-		i++
 	}
 }
 
@@ -5345,7 +5343,6 @@ func printAnnotationsMultiline(w PrefixWriter, title string, annotations map[str
 		} else {
 			w.Write(LEVEL_0, "%s: %s\n", key, value)
 		}
-		i++
 	}
 }
 

staging/src/k8s.io/legacy-cloud-providers/azure/azure_controller_common.go

@@ -50,7 +50,6 @@ const (
 	diskCachingLimit = 4096 // GiB
 
 	maxLUN               = 64 // max number of LUNs per VM
-	errLeaseFailed       = "AcquireDiskLeaseFailed"
 	errLeaseIDMissing    = "LeaseIdMissing"
 	errContainerNotFound = "ContainerNotFound"
 	errStatusCode400     = "statuscode=400"

staging/src/k8s.io/legacy-cloud-providers/gce/gce_disks_test.go

@@ -29,7 +29,7 @@ import (
 	computebeta "google.golang.org/api/compute/v0.beta"
 	compute "google.golang.org/api/compute/v1"
 	"google.golang.org/api/googleapi"
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/util/sets"
 	cloudprovider "k8s.io/cloud-provider"
@@ -268,13 +268,12 @@ func TestCreateDisk_MultiZone(t *testing.T) {
 		nodeInformerSynced: func() bool { return true },
 	}
 
-	diskName := "disk"
 	diskType := DiskTypeStandard
 	const sizeGb int64 = 128
 
 	/* Act & Assert */
 	for _, zone := range gce.managedZones {
-		diskName = zone + "disk"
+		diskName := zone + "disk"
 		_, err := gce.CreateDisk(diskName, diskType, zone, sizeGb, nil)
 		if err != nil {
 			t.Errorf("Error creating disk in zone '%v'; error: \"%v\"", zone, err)
@@ -420,19 +419,19 @@ func TestDeleteDisk_DiffDiskMultiZone(t *testing.T) {
 		nodeZones:          createNodeZones(zonesWithNodes),
 		nodeInformerSynced: func() bool { return true },
 	}
-	diskName := "disk"
+
 	diskType := DiskTypeSSD
 	const sizeGb int64 = 128
 
 	for _, zone := range gce.managedZones {
-		diskName = zone + "disk"
+		diskName := zone + "disk"
 		gce.CreateDisk(diskName, diskType, zone, sizeGb, nil)
 	}
 
 	/* Act & Assert */
 	var err error
 	for _, zone := range gce.managedZones {
-		diskName = zone + "disk"
+		diskName := zone + "disk"
 		err = gce.DeleteDisk(diskName)
 		if err != nil {
 			t.Errorf("Error deleting disk in zone '%v'; error: \"%v\"", zone, err)

test/e2e/apimachinery/garbage_collector.go

@@ -68,7 +68,7 @@ func estimateMaximumPods(c clientset.Interface, min, max int32) int32 {
 		availablePods += 10
 	}
 	//avoid creating exactly max pods
-	availablePods *= 8 / 10
+	availablePods = int32(float32(availablePods) * 0.8)
 	// bound the top and bottom
 	if availablePods > max {
 		availablePods = max

test/e2e/framework/log.go

@@ -49,6 +49,7 @@ func Failf(format string, args ...interface{}) {
 	skip := 2
 	log("FAIL", "%s\n\nFull Stack Trace\n%s", msg, PrunedStack(skip))
 	e2eginkgowrapper.Fail(nowStamp()+": "+msg, skip)
+	panic("unreachable")
 }
 
 // Fail is a replacement for ginkgo.Fail which logs the problem as it occurs

test/e2e/framework/skipper/skipper.go

@@ -118,6 +118,7 @@ func pruneStack(skip int) string {
 // Skipf skips with information about why the test is being skipped.
 func Skipf(format string, args ...interface{}) {
 	skipInternalf(1, format, args...)
+	panic("unreachable")
 }
 
 // SkipUnlessAtLeast skips if the value is less than the minValue.

test/images/agnhost/net/nat/closewait.go

@@ -38,7 +38,7 @@ import (
 
 // leakedConnection is a global variable that should leak the active
 // connection assigned here.
-//lint:ignore U1000 intentional unused variable
+//nolint:unused // U1000 intentional unused variable
 var leakedConnection *net.TCPConn
 
 // CloseWaitServerOptions holds server JSON options.

test/integration/garbagecollector/garbage_collector_test.go

@@ -598,13 +598,12 @@ func setupRCsPods(t *testing.T, gc *garbagecollector.GarbageCollector, clientSet
 	}
 	orphan := false
 	switch {
-	//lint:file-ignore SA1019 Keep testing deprecated OrphanDependents option until it's being removed
+	case options.OrphanDependents == nil && options.PropagationPolicy == nil && len(initialFinalizers) == 0: //nolint:staticcheck // SA1019 Keep testing deprecated OrphanDependents option until it's being removed
-	case options.OrphanDependents == nil && options.PropagationPolicy == nil && len(initialFinalizers) == 0:
 		// if there are no deletion options, the default policy for replication controllers is orphan
 		orphan = true
-	case options.OrphanDependents != nil:
+	case options.OrphanDependents != nil: //nolint:staticcheck // SA1019 Keep testing deprecated OrphanDependents option until it's being removed
 		// if the deletion options explicitly specify whether to orphan, that controls
-		orphan = *options.OrphanDependents
+		orphan = *options.OrphanDependents //nolint:staticcheck // SA1019 Keep testing deprecated OrphanDependents option until it's being removed
 	case options.PropagationPolicy != nil:
 		// if the deletion options explicitly specify whether to orphan, that controls
 		orphan = *options.PropagationPolicy == metav1.DeletePropagationOrphan

test/integration/scheduler_perf/scheduler_perf_legacy_test.go

@@ -439,8 +439,7 @@ func benchmarkScheduling(numExistingPods, minPods int,
 	testPodStrategy testutils.TestPodCreateStrategy,
 	b *testing.B) {
 	if b.N < minPods {
-		//lint:ignore SA3001 Set a minimum for b.N to get more meaningful results
+		b.N = minPods //nolint:staticcheck // SA3001 Set a minimum for b.N to get more meaningful results
-		b.N = minPods
 	}
 	finalFunc, podInformer, clientset, _ := mustSetupScheduler(nil)
 	defer finalFunc()