rebase: bump the github-dependencies group with 5 updates

Bumps the github-dependencies group with 5 updates:

| Package | From | To |
| --- | --- | --- |
| [github.com/aws/aws-sdk-go](https://github.com/aws/aws-sdk-go) | `1.49.0` | `1.49.13` |
| [github.com/aws/aws-sdk-go-v2/service/sts](https://github.com/aws/aws-sdk-go-v2) | `1.26.5` | `1.26.6` |
| [github.com/google/uuid](https://github.com/google/uuid) | `1.4.0` | `1.5.0` |
| [github.com/kubernetes-csi/csi-lib-utils](https://github.com/kubernetes-csi/csi-lib-utils) | `0.14.0` | `0.17.0` |
| [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) | `1.17.0` | `1.18.0` |


Updates `github.com/aws/aws-sdk-go` from 1.49.0 to 1.49.13
- [Release notes](https://github.com/aws/aws-sdk-go/releases)
- [Commits](https://github.com/aws/aws-sdk-go/compare/v1.49.0...v1.49.13)

Updates `github.com/aws/aws-sdk-go-v2/service/sts` from 1.26.5 to 1.26.6
- [Release notes](https://github.com/aws/aws-sdk-go-v2/releases)
- [Commits](https://github.com/aws/aws-sdk-go-v2/compare/service/s3/v1.26.5...service/s3/v1.26.6)

Updates `github.com/google/uuid` from 1.4.0 to 1.5.0
- [Release notes](https://github.com/google/uuid/releases)
- [Changelog](https://github.com/google/uuid/blob/master/CHANGELOG.md)
- [Commits](https://github.com/google/uuid/compare/v1.4.0...v1.5.0)

Updates `github.com/kubernetes-csi/csi-lib-utils` from 0.14.0 to 0.17.0
- [Release notes](https://github.com/kubernetes-csi/csi-lib-utils/releases)
- [Commits](https://github.com/kubernetes-csi/csi-lib-utils/compare/v0.14.0...v0.17.0)

Updates `github.com/prometheus/client_golang` from 1.17.0 to 1.18.0
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v1.17.0...v1.18.0)

---
updated-dependencies:
- dependency-name: github.com/aws/aws-sdk-go
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-dependencies
- dependency-name: github.com/aws/aws-sdk-go-v2/service/sts
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-dependencies
- dependency-name: github.com/google/uuid
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-dependencies
- dependency-name: github.com/kubernetes-csi/csi-lib-utils
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-dependencies
- dependency-name: github.com/prometheus/client_golang
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/prometheus/client_golang/prometheus/histogram.go

@@ -475,6 +475,9 @@ type HistogramOpts struct {
 
 	// now is for testing purposes, by default it's time.Now.
 	now func() time.Time
+
+	// afterFunc is for testing purposes, by default it's time.AfterFunc.
+	afterFunc func(time.Duration, func()) *time.Timer
 }
 
 // HistogramVecOpts bundles the options to create a HistogramVec metric.
@@ -526,7 +529,9 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr
 	if opts.now == nil {
 		opts.now = time.Now
 	}
-
+	if opts.afterFunc == nil {
+		opts.afterFunc = time.AfterFunc
+	}
 	h := &histogram{
 		desc:                            desc,
 		upperBounds:                     opts.Buckets,
@@ -536,6 +541,7 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr
 		nativeHistogramMinResetDuration: opts.NativeHistogramMinResetDuration,
 		lastResetTime:                   opts.now(),
 		now:                             opts.now,
+		afterFunc:                       opts.afterFunc,
 	}
 	if len(h.upperBounds) == 0 && opts.NativeHistogramBucketFactor <= 1 {
 		h.upperBounds = DefBuckets
@@ -716,9 +722,16 @@ type histogram struct {
 	nativeHistogramMinResetDuration time.Duration
 	// lastResetTime is protected by mtx. It is also used as created timestamp.
 	lastResetTime time.Time
+	// resetScheduled is protected by mtx. It is true if a reset is
+	// scheduled for a later time (when nativeHistogramMinResetDuration has
+	// passed).
+	resetScheduled bool
 
 	// now is for testing purposes, by default it's time.Now.
 	now func() time.Time
+
+	// afterFunc is for testing purposes, by default it's time.AfterFunc.
+	afterFunc func(time.Duration, func()) *time.Timer
 }
 
 func (h *histogram) Desc() *Desc {
@@ -874,21 +887,31 @@ func (h *histogram) limitBuckets(counts *histogramCounts, value float64, bucket
 	if h.maybeReset(hotCounts, coldCounts, coldIdx, value, bucket) {
 		return
 	}
+	// One of the other strategies will happen. To undo what they will do as
+	// soon as enough time has passed to satisfy
+	// h.nativeHistogramMinResetDuration, schedule a reset at the right time
+	// if we haven't done so already.
+	if h.nativeHistogramMinResetDuration > 0 && !h.resetScheduled {
+		h.resetScheduled = true
+		h.afterFunc(h.nativeHistogramMinResetDuration-h.now().Sub(h.lastResetTime), h.reset)
+	}
+
 	if h.maybeWidenZeroBucket(hotCounts, coldCounts) {
 		return
 	}
 	h.doubleBucketWidth(hotCounts, coldCounts)
 }
 
-// maybeReset resets the whole histogram if at least h.nativeHistogramMinResetDuration
-// has been passed. It returns true if the histogram has been reset. The caller
-// must have locked h.mtx.
+// maybeReset resets the whole histogram if at least
+// h.nativeHistogramMinResetDuration has been passed. It returns true if the
+// histogram has been reset. The caller must have locked h.mtx.
 func (h *histogram) maybeReset(
 	hot, cold *histogramCounts, coldIdx uint64, value float64, bucket int,
 ) bool {
 	// We are using the possibly mocked h.now() rather than
 	// time.Since(h.lastResetTime) to enable testing.
-	if h.nativeHistogramMinResetDuration == 0 ||
+	if h.nativeHistogramMinResetDuration == 0 || // No reset configured.
+		h.resetScheduled || // Do not interefere if a reset is already scheduled.
 		h.now().Sub(h.lastResetTime) < h.nativeHistogramMinResetDuration {
 		return false
 	}
@@ -906,6 +929,29 @@ func (h *histogram) maybeReset(
 	return true
 }
 
+// reset resets the whole histogram. It locks h.mtx itself, i.e. it has to be
+// called without having locked h.mtx.
+func (h *histogram) reset() {
+	h.mtx.Lock()
+	defer h.mtx.Unlock()
+
+	n := atomic.LoadUint64(&h.countAndHotIdx)
+	hotIdx := n >> 63
+	coldIdx := (^n) >> 63
+	hot := h.counts[hotIdx]
+	cold := h.counts[coldIdx]
+	// Completely reset coldCounts.
+	h.resetCounts(cold)
+	// Make coldCounts the new hot counts while resetting countAndHotIdx.
+	n = atomic.SwapUint64(&h.countAndHotIdx, coldIdx<<63)
+	count := n & ((1 << 63) - 1)
+	waitForCooldown(count, hot)
+	// Finally, reset the formerly hot counts, too.
+	h.resetCounts(hot)
+	h.lastResetTime = h.now()
+	h.resetScheduled = false
+}
+
 // maybeWidenZeroBucket widens the zero bucket until it includes the existing
 // buckets closest to the zero bucket (which could be two, if an equidistant
 // negative and a positive bucket exists, but usually it's only one bucket to be

vendor/github.com/prometheus/client_golang/prometheus/labels.go

@@ -165,6 +165,8 @@ func validateValuesInLabels(labels Labels, expectedNumberOfValues int) error {
 
 func validateLabelValues(vals []string, expectedNumberOfValues int) error {
 	if len(vals) != expectedNumberOfValues {
+		// The call below makes vals escape, copy them to avoid that.
+		vals := append([]string(nil), vals...)
 		return fmt.Errorf(
 			"%w: expected %d label values but got %d in %#v",
 			errInconsistentCardinality, expectedNumberOfValues,

vendor/github.com/prometheus/client_golang/prometheus/process_collector_other.go

@@ -11,8 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build !windows && !js
-// +build !windows,!js
+//go:build !windows && !js && !wasip1
+// +build !windows,!js,!wasip1
 
 package prometheus
 

vendor/github.com/prometheus/client_golang/prometheus/process_collector_wasip1.go

@@ -0,0 +1,26 @@
+// Copyright 2023 The Prometheus 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.
+
+//go:build wasip1
+// +build wasip1
+
+package prometheus
+
+func canCollectProcess() bool {
+	return false
+}
+
+func (*processCollector) processCollect(chan<- Metric) {
+	// noop on this platform
+	return
+}

vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/problem.go

@@ -0,0 +1,33 @@
+// Copyright 2020 The Prometheus 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.
+
+package promlint
+
+import dto "github.com/prometheus/client_model/go"
+
+// A Problem is an issue detected by a linter.
+type Problem struct {
+	// The name of the metric indicated by this Problem.
+	Metric string
+
+	// A description of the issue for this Problem.
+	Text string
+}
+
+// newProblem is helper function to create a Problem.
+func newProblem(mf *dto.MetricFamily, text string) Problem {
+	return Problem{
+		Metric: mf.GetName(),
+		Text:   text,
+	}
+}

vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/promlint.go

@@ -16,15 +16,11 @@ package promlint
 
 import (
 	"errors"
-	"fmt"
 	"io"
-	"regexp"
 	"sort"
-	"strings"
-
-	"github.com/prometheus/common/expfmt"
 
 	dto "github.com/prometheus/client_model/go"
+	"github.com/prometheus/common/expfmt"
 )
 
 // A Linter is a Prometheus metrics linter.  It identifies issues with metric
@@ -37,23 +33,8 @@ type Linter struct {
 	// of them.
 	r   io.Reader
 	mfs []*dto.MetricFamily
-}
 
-// A Problem is an issue detected by a Linter.
-type Problem struct {
-	// The name of the metric indicated by this Problem.
-	Metric string
-
-	// A description of the issue for this Problem.
-	Text string
-}
-
-// newProblem is helper function to create a Problem.
-func newProblem(mf *dto.MetricFamily, text string) Problem {
-	return Problem{
-		Metric: mf.GetName(),
-		Text:   text,
-	}
+	customValidations []Validation
 }
 
 // New creates a new Linter that reads an input stream of Prometheus metrics in
@@ -72,6 +53,14 @@ func NewWithMetricFamilies(mfs []*dto.MetricFamily) *Linter {
 	}
 }
 
+// AddCustomValidations adds custom validations to the linter.
+func (l *Linter) AddCustomValidations(vs ...Validation) {
+	if l.customValidations == nil {
+		l.customValidations = make([]Validation, 0, len(vs))
+	}
+	l.customValidations = append(l.customValidations, vs...)
+}
+
 // Lint performs a linting pass, returning a slice of Problems indicating any
 // issues found in the metrics stream. The slice is sorted by metric name
 // and issue description.
@@ -91,11 +80,11 @@ func (l *Linter) Lint() ([]Problem, error) {
 				return nil, err
 			}
 
-			problems = append(problems, lint(mf)...)
+			problems = append(problems, l.lint(mf)...)
 		}
 	}
 	for _, mf := range l.mfs {
-		problems = append(problems, lint(mf)...)
+		problems = append(problems, l.lint(mf)...)
 	}
 
 	// Ensure deterministic output.
@@ -110,276 +99,25 @@ func (l *Linter) Lint() ([]Problem, error) {
 }
 
 // lint is the entry point for linting a single metric.
-func lint(mf *dto.MetricFamily) []Problem {
-	fns := []func(mf *dto.MetricFamily) []Problem{
-		lintHelp,
-		lintMetricUnits,
-		lintCounter,
-		lintHistogramSummaryReserved,
-		lintMetricTypeInName,
-		lintReservedChars,
-		lintCamelCase,
-		lintUnitAbbreviations,
+func (l *Linter) lint(mf *dto.MetricFamily) []Problem {
+	var problems []Problem
+
+	for _, fn := range defaultValidations {
+		errs := fn(mf)
+		for _, err := range errs {
+			problems = append(problems, newProblem(mf, err.Error()))
+		}
 	}
 
-	var problems []Problem
-	for _, fn := range fns {
-		problems = append(problems, fn(mf)...)
+	if l.customValidations != nil {
+		for _, fn := range l.customValidations {
+			errs := fn(mf)
+			for _, err := range errs {
+				problems = append(problems, newProblem(mf, err.Error()))
+			}
+		}
 	}
 
 	// TODO(mdlayher): lint rules for specific metrics types.
 	return problems
 }
-
-// lintHelp detects issues related to the help text for a metric.
-func lintHelp(mf *dto.MetricFamily) []Problem {
-	var problems []Problem
-
-	// Expect all metrics to have help text available.
-	if mf.Help == nil {
-		problems = append(problems, newProblem(mf, "no help text"))
-	}
-
-	return problems
-}
-
-// lintMetricUnits detects issues with metric unit names.
-func lintMetricUnits(mf *dto.MetricFamily) []Problem {
-	var problems []Problem
-
-	unit, base, ok := metricUnits(*mf.Name)
-	if !ok {
-		// No known units detected.
-		return nil
-	}
-
-	// Unit is already a base unit.
-	if unit == base {
-		return nil
-	}
-
-	problems = append(problems, newProblem(mf, fmt.Sprintf("use base unit %q instead of %q", base, unit)))
-
-	return problems
-}
-
-// lintCounter detects issues specific to counters, as well as patterns that should
-// only be used with counters.
-func lintCounter(mf *dto.MetricFamily) []Problem {
-	var problems []Problem
-
-	isCounter := mf.GetType() == dto.MetricType_COUNTER
-	isUntyped := mf.GetType() == dto.MetricType_UNTYPED
-	hasTotalSuffix := strings.HasSuffix(mf.GetName(), "_total")
-
-	switch {
-	case isCounter && !hasTotalSuffix:
-		problems = append(problems, newProblem(mf, `counter metrics should have "_total" suffix`))
-	case !isUntyped && !isCounter && hasTotalSuffix:
-		problems = append(problems, newProblem(mf, `non-counter metrics should not have "_total" suffix`))
-	}
-
-	return problems
-}
-
-// lintHistogramSummaryReserved detects when other types of metrics use names or labels
-// reserved for use by histograms and/or summaries.
-func lintHistogramSummaryReserved(mf *dto.MetricFamily) []Problem {
-	// These rules do not apply to untyped metrics.
-	t := mf.GetType()
-	if t == dto.MetricType_UNTYPED {
-		return nil
-	}
-
-	var problems []Problem
-
-	isHistogram := t == dto.MetricType_HISTOGRAM
-	isSummary := t == dto.MetricType_SUMMARY
-
-	n := mf.GetName()
-
-	if !isHistogram && strings.HasSuffix(n, "_bucket") {
-		problems = append(problems, newProblem(mf, `non-histogram metrics should not have "_bucket" suffix`))
-	}
-	if !isHistogram && !isSummary && strings.HasSuffix(n, "_count") {
-		problems = append(problems, newProblem(mf, `non-histogram and non-summary metrics should not have "_count" suffix`))
-	}
-	if !isHistogram && !isSummary && strings.HasSuffix(n, "_sum") {
-		problems = append(problems, newProblem(mf, `non-histogram and non-summary metrics should not have "_sum" suffix`))
-	}
-
-	for _, m := range mf.GetMetric() {
-		for _, l := range m.GetLabel() {
-			ln := l.GetName()
-
-			if !isHistogram && ln == "le" {
-				problems = append(problems, newProblem(mf, `non-histogram metrics should not have "le" label`))
-			}
-			if !isSummary && ln == "quantile" {
-				problems = append(problems, newProblem(mf, `non-summary metrics should not have "quantile" label`))
-			}
-		}
-	}
-
-	return problems
-}
-
-// lintMetricTypeInName detects when metric types are included in the metric name.
-func lintMetricTypeInName(mf *dto.MetricFamily) []Problem {
-	var problems []Problem
-	n := strings.ToLower(mf.GetName())
-
-	for i, t := range dto.MetricType_name {
-		if i == int32(dto.MetricType_UNTYPED) {
-			continue
-		}
-
-		typename := strings.ToLower(t)
-		if strings.Contains(n, "_"+typename+"_") || strings.HasSuffix(n, "_"+typename) {
-			problems = append(problems, newProblem(mf, fmt.Sprintf(`metric name should not include type '%s'`, typename)))
-		}
-	}
-	return problems
-}
-
-// lintReservedChars detects colons in metric names.
-func lintReservedChars(mf *dto.MetricFamily) []Problem {
-	var problems []Problem
-	if strings.Contains(mf.GetName(), ":") {
-		problems = append(problems, newProblem(mf, "metric names should not contain ':'"))
-	}
-	return problems
-}
-
-var camelCase = regexp.MustCompile(`[a-z][A-Z]`)
-
-// lintCamelCase detects metric names and label names written in camelCase.
-func lintCamelCase(mf *dto.MetricFamily) []Problem {
-	var problems []Problem
-	if camelCase.FindString(mf.GetName()) != "" {
-		problems = append(problems, newProblem(mf, "metric names should be written in 'snake_case' not 'camelCase'"))
-	}
-
-	for _, m := range mf.GetMetric() {
-		for _, l := range m.GetLabel() {
-			if camelCase.FindString(l.GetName()) != "" {
-				problems = append(problems, newProblem(mf, "label names should be written in 'snake_case' not 'camelCase'"))
-			}
-		}
-	}
-	return problems
-}
-
-// lintUnitAbbreviations detects abbreviated units in the metric name.
-func lintUnitAbbreviations(mf *dto.MetricFamily) []Problem {
-	var problems []Problem
-	n := strings.ToLower(mf.GetName())
-	for _, s := range unitAbbreviations {
-		if strings.Contains(n, "_"+s+"_") || strings.HasSuffix(n, "_"+s) {
-			problems = append(problems, newProblem(mf, "metric names should not contain abbreviated units"))
-		}
-	}
-	return problems
-}
-
-// metricUnits attempts to detect known unit types used as part of a metric name,
-// e.g. "foo_bytes_total" or "bar_baz_milligrams".
-func metricUnits(m string) (unit, base string, ok bool) {
-	ss := strings.Split(m, "_")
-
-	for _, s := range ss {
-		if base, found := units[s]; found {
-			return s, base, true
-		}
-
-		for _, p := range unitPrefixes {
-			if strings.HasPrefix(s, p) {
-				if base, found := units[s[len(p):]]; found {
-					return s, base, true
-				}
-			}
-		}
-	}
-
-	return "", "", false
-}
-
-// Units and their possible prefixes recognized by this library.  More can be
-// added over time as needed.
-var (
-	// map a unit to the appropriate base unit.
-	units = map[string]string{
-		// Base units.
-		"amperes": "amperes",
-		"bytes":   "bytes",
-		"celsius": "celsius", // Also allow Celsius because it is common in typical Prometheus use cases.
-		"grams":   "grams",
-		"joules":  "joules",
-		"kelvin":  "kelvin", // SI base unit, used in special cases (e.g. color temperature, scientific measurements).
-		"meters":  "meters", // Both American and international spelling permitted.
-		"metres":  "metres",
-		"seconds": "seconds",
-		"volts":   "volts",
-
-		// Non base units.
-		// Time.
-		"minutes": "seconds",
-		"hours":   "seconds",
-		"days":    "seconds",
-		"weeks":   "seconds",
-		// Temperature.
-		"kelvins":    "kelvin",
-		"fahrenheit": "celsius",
-		"rankine":    "celsius",
-		// Length.
-		"inches": "meters",
-		"yards":  "meters",
-		"miles":  "meters",
-		// Bytes.
-		"bits": "bytes",
-		// Energy.
-		"calories": "joules",
-		// Mass.
-		"pounds": "grams",
-		"ounces": "grams",
-	}
-
-	unitPrefixes = []string{
-		"pico",
-		"nano",
-		"micro",
-		"milli",
-		"centi",
-		"deci",
-		"deca",
-		"hecto",
-		"kilo",
-		"kibi",
-		"mega",
-		"mibi",
-		"giga",
-		"gibi",
-		"tera",
-		"tebi",
-		"peta",
-		"pebi",
-	}
-
-	// Common abbreviations that we'd like to discourage.
-	unitAbbreviations = []string{
-		"s",
-		"ms",
-		"us",
-		"ns",
-		"sec",
-		"b",
-		"kb",
-		"mb",
-		"gb",
-		"tb",
-		"pb",
-		"m",
-		"h",
-		"d",
-	}
-)

vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validation.go

@@ -0,0 +1,33 @@
+// Copyright 2020 The Prometheus 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.
+
+package promlint
+
+import (
+	dto "github.com/prometheus/client_model/go"
+
+	"github.com/prometheus/client_golang/prometheus/testutil/promlint/validations"
+)
+
+type Validation = func(mf *dto.MetricFamily) []error
+
+var defaultValidations = []Validation{
+	validations.LintHelp,
+	validations.LintMetricUnits,
+	validations.LintCounter,
+	validations.LintHistogramSummaryReserved,
+	validations.LintMetricTypeInName,
+	validations.LintReservedChars,
+	validations.LintCamelCase,
+	validations.LintUnitAbbreviations,
+}

vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/counter_validations.go

@@ -0,0 +1,40 @@
+// Copyright 2020 The Prometheus 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.
+
+package validations
+
+import (
+	"errors"
+	"strings"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+// LintCounter detects issues specific to counters, as well as patterns that should
+// only be used with counters.
+func LintCounter(mf *dto.MetricFamily) []error {
+	var problems []error
+
+	isCounter := mf.GetType() == dto.MetricType_COUNTER
+	isUntyped := mf.GetType() == dto.MetricType_UNTYPED
+	hasTotalSuffix := strings.HasSuffix(mf.GetName(), "_total")
+
+	switch {
+	case isCounter && !hasTotalSuffix:
+		problems = append(problems, errors.New(`counter metrics should have "_total" suffix`))
+	case !isUntyped && !isCounter && hasTotalSuffix:
+		problems = append(problems, errors.New(`non-counter metrics should not have "_total" suffix`))
+	}
+
+	return problems
+}

vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/generic_name_validations.go

@@ -0,0 +1,101 @@
+// Copyright 2020 The Prometheus 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.
+
+package validations
+
+import (
+	"errors"
+	"fmt"
+	"regexp"
+	"strings"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+var camelCase = regexp.MustCompile(`[a-z][A-Z]`)
+
+// LintMetricUnits detects issues with metric unit names.
+func LintMetricUnits(mf *dto.MetricFamily) []error {
+	var problems []error
+
+	unit, base, ok := metricUnits(*mf.Name)
+	if !ok {
+		// No known units detected.
+		return nil
+	}
+
+	// Unit is already a base unit.
+	if unit == base {
+		return nil
+	}
+
+	problems = append(problems, fmt.Errorf("use base unit %q instead of %q", base, unit))
+
+	return problems
+}
+
+// LintMetricTypeInName detects when metric types are included in the metric name.
+func LintMetricTypeInName(mf *dto.MetricFamily) []error {
+	var problems []error
+	n := strings.ToLower(mf.GetName())
+
+	for i, t := range dto.MetricType_name {
+		if i == int32(dto.MetricType_UNTYPED) {
+			continue
+		}
+
+		typename := strings.ToLower(t)
+		if strings.Contains(n, "_"+typename+"_") || strings.HasSuffix(n, "_"+typename) {
+			problems = append(problems, fmt.Errorf(`metric name should not include type '%s'`, typename))
+		}
+	}
+	return problems
+}
+
+// LintReservedChars detects colons in metric names.
+func LintReservedChars(mf *dto.MetricFamily) []error {
+	var problems []error
+	if strings.Contains(mf.GetName(), ":") {
+		problems = append(problems, errors.New("metric names should not contain ':'"))
+	}
+	return problems
+}
+
+// LintCamelCase detects metric names and label names written in camelCase.
+func LintCamelCase(mf *dto.MetricFamily) []error {
+	var problems []error
+	if camelCase.FindString(mf.GetName()) != "" {
+		problems = append(problems, errors.New("metric names should be written in 'snake_case' not 'camelCase'"))
+	}
+
+	for _, m := range mf.GetMetric() {
+		for _, l := range m.GetLabel() {
+			if camelCase.FindString(l.GetName()) != "" {
+				problems = append(problems, errors.New("label names should be written in 'snake_case' not 'camelCase'"))
+			}
+		}
+	}
+	return problems
+}
+
+// LintUnitAbbreviations detects abbreviated units in the metric name.
+func LintUnitAbbreviations(mf *dto.MetricFamily) []error {
+	var problems []error
+	n := strings.ToLower(mf.GetName())
+	for _, s := range unitAbbreviations {
+		if strings.Contains(n, "_"+s+"_") || strings.HasSuffix(n, "_"+s) {
+			problems = append(problems, errors.New("metric names should not contain abbreviated units"))
+		}
+	}
+	return problems
+}

vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/help_validations.go

@@ -0,0 +1,32 @@
+// Copyright 2020 The Prometheus 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.
+
+package validations
+
+import (
+	"errors"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+// LintHelp detects issues related to the help text for a metric.
+func LintHelp(mf *dto.MetricFamily) []error {
+	var problems []error
+
+	// Expect all metrics to have help text available.
+	if mf.Help == nil {
+		problems = append(problems, errors.New("no help text"))
+	}
+
+	return problems
+}

vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/histogram_validations.go

@@ -0,0 +1,63 @@
+// Copyright 2020 The Prometheus 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.
+
+package validations
+
+import (
+	"errors"
+	"strings"
+
+	dto "github.com/prometheus/client_model/go"
+)
+
+// LintHistogramSummaryReserved detects when other types of metrics use names or labels
+// reserved for use by histograms and/or summaries.
+func LintHistogramSummaryReserved(mf *dto.MetricFamily) []error {
+	// These rules do not apply to untyped metrics.
+	t := mf.GetType()
+	if t == dto.MetricType_UNTYPED {
+		return nil
+	}
+
+	var problems []error
+
+	isHistogram := t == dto.MetricType_HISTOGRAM
+	isSummary := t == dto.MetricType_SUMMARY
+
+	n := mf.GetName()
+
+	if !isHistogram && strings.HasSuffix(n, "_bucket") {
+		problems = append(problems, errors.New(`non-histogram metrics should not have "_bucket" suffix`))
+	}
+	if !isHistogram && !isSummary && strings.HasSuffix(n, "_count") {
+		problems = append(problems, errors.New(`non-histogram and non-summary metrics should not have "_count" suffix`))
+	}
+	if !isHistogram && !isSummary && strings.HasSuffix(n, "_sum") {
+		problems = append(problems, errors.New(`non-histogram and non-summary metrics should not have "_sum" suffix`))
+	}
+
+	for _, m := range mf.GetMetric() {
+		for _, l := range m.GetLabel() {
+			ln := l.GetName()
+
+			if !isHistogram && ln == "le" {
+				problems = append(problems, errors.New(`non-histogram metrics should not have "le" label`))
+			}
+			if !isSummary && ln == "quantile" {
+				problems = append(problems, errors.New(`non-summary metrics should not have "quantile" label`))
+			}
+		}
+	}
+
+	return problems
+}

vendor/github.com/prometheus/client_golang/prometheus/testutil/promlint/validations/units.go

@@ -0,0 +1,118 @@
+// Copyright 2020 The Prometheus 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.
+
+package validations
+
+import "strings"
+
+// Units and their possible prefixes recognized by this library.  More can be
+// added over time as needed.
+var (
+	// map a unit to the appropriate base unit.
+	units = map[string]string{
+		// Base units.
+		"amperes": "amperes",
+		"bytes":   "bytes",
+		"celsius": "celsius", // Also allow Celsius because it is common in typical Prometheus use cases.
+		"grams":   "grams",
+		"joules":  "joules",
+		"kelvin":  "kelvin", // SI base unit, used in special cases (e.g. color temperature, scientific measurements).
+		"meters":  "meters", // Both American and international spelling permitted.
+		"metres":  "metres",
+		"seconds": "seconds",
+		"volts":   "volts",
+
+		// Non base units.
+		// Time.
+		"minutes": "seconds",
+		"hours":   "seconds",
+		"days":    "seconds",
+		"weeks":   "seconds",
+		// Temperature.
+		"kelvins":    "kelvin",
+		"fahrenheit": "celsius",
+		"rankine":    "celsius",
+		// Length.
+		"inches": "meters",
+		"yards":  "meters",
+		"miles":  "meters",
+		// Bytes.
+		"bits": "bytes",
+		// Energy.
+		"calories": "joules",
+		// Mass.
+		"pounds": "grams",
+		"ounces": "grams",
+	}
+
+	unitPrefixes = []string{
+		"pico",
+		"nano",
+		"micro",
+		"milli",
+		"centi",
+		"deci",
+		"deca",
+		"hecto",
+		"kilo",
+		"kibi",
+		"mega",
+		"mibi",
+		"giga",
+		"gibi",
+		"tera",
+		"tebi",
+		"peta",
+		"pebi",
+	}
+
+	// Common abbreviations that we'd like to discourage.
+	unitAbbreviations = []string{
+		"s",
+		"ms",
+		"us",
+		"ns",
+		"sec",
+		"b",
+		"kb",
+		"mb",
+		"gb",
+		"tb",
+		"pb",
+		"m",
+		"h",
+		"d",
+	}
+)
+
+// metricUnits attempts to detect known unit types used as part of a metric name,
+// e.g. "foo_bytes_total" or "bar_baz_milligrams".
+func metricUnits(m string) (unit, base string, ok bool) {
+	ss := strings.Split(m, "_")
+
+	for _, s := range ss {
+		if base, found := units[s]; found {
+			return s, base, true
+		}
+
+		for _, p := range unitPrefixes {
+			if strings.HasPrefix(s, p) {
+				if base, found := units[s[len(p):]]; found {
+					return s, base, true
+				}
+			}
+		}
+	}
+
+	return "", "", false
+}

vendor/github.com/prometheus/client_golang/prometheus/testutil/testutil.go

@@ -47,6 +47,7 @@ import (
 	"github.com/davecgh/go-spew/spew"
 	dto "github.com/prometheus/client_model/go"
 	"github.com/prometheus/common/expfmt"
+	"google.golang.org/protobuf/proto"
 
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/internal"
@@ -230,6 +231,20 @@ func convertReaderToMetricFamily(reader io.Reader) ([]*dto.MetricFamily, error)
 		return nil, fmt.Errorf("converting reader to metric families failed: %w", err)
 	}
 
+	// The text protocol handles empty help fields inconsistently. When
+	// encoding, any non-nil value, include the empty string, produces a
+	// "# HELP" line. But when decoding, the help field is only set to a
+	// non-nil value if the "# HELP" line contains a non-empty value.
+	//
+	// Because metrics in a registry always have non-nil help fields, populate
+	// any nil help fields in the parsed metrics with the empty string so that
+	// when we compare text encodings, the results are consistent.
+	for _, metric := range notNormalized {
+		if metric.Help == nil {
+			metric.Help = proto.String("")
+		}
+	}
+
 	return internal.NormalizeMetricFamilies(notNormalized), nil
 }
 

vendor/github.com/prometheus/client_model/go/metrics.pb.go

@@ -474,6 +474,9 @@ type Histogram struct {
 	NegativeDelta []int64   `protobuf:"zigzag64,10,rep,name=negative_delta,json=negativeDelta" json:"negative_delta,omitempty"` // Count delta of each bucket compared to previous one (or to zero for 1st bucket).
 	NegativeCount []float64 `protobuf:"fixed64,11,rep,name=negative_count,json=negativeCount" json:"negative_count,omitempty"`  // Absolute count of each bucket.
 	// Positive buckets for the native histogram.
+	// Use a no-op span (offset 0, length 0) for a native histogram without any
+	// observations yet and with a zero_threshold of 0. Otherwise, it would be
+	// indistinguishable from a classic histogram.
 	PositiveSpan []*BucketSpan `protobuf:"bytes,12,rep,name=positive_span,json=positiveSpan" json:"positive_span,omitempty"`
 	// Use either "positive_delta" or "positive_count", the former for
 	// regular histograms with integer counts, the latter for float

vendor/github.com/prometheus/common/expfmt/decode.go

@@ -22,7 +22,7 @@ import (
 
 	dto "github.com/prometheus/client_model/go"
 
-	"github.com/matttproud/golang_protobuf_extensions/pbutil"
+	"github.com/matttproud/golang_protobuf_extensions/v2/pbutil"
 	"github.com/prometheus/common/model"
 )
 

vendor/github.com/prometheus/common/expfmt/encode.go

@@ -18,7 +18,7 @@ import (
 	"io"
 	"net/http"
 
-	"github.com/matttproud/golang_protobuf_extensions/pbutil"
+	"github.com/matttproud/golang_protobuf_extensions/v2/pbutil"
 	"github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg"
 	"google.golang.org/protobuf/encoding/prototext"
 

vendor/github.com/prometheus/procfs/Makefile.common

@@ -61,7 +61,7 @@ PROMU_URL     := https://github.com/prometheus/promu/releases/download/v$(PROMU_
 SKIP_GOLANGCI_LINT :=
 GOLANGCI_LINT :=
 GOLANGCI_LINT_OPTS ?=
-GOLANGCI_LINT_VERSION ?= v1.53.3
+GOLANGCI_LINT_VERSION ?= v1.54.2
 # golangci-lint only supports linux, darwin and windows platforms on i386/amd64.
 # windows isn't included here because of the path separator being different.
 ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin))

vendor/github.com/prometheus/procfs/fs_statfs_notype.go

@@ -11,8 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build netbsd || openbsd || solaris || windows || nostatfs
-// +build netbsd openbsd solaris windows nostatfs
+//go:build !freebsd && !linux
+// +build !freebsd,!linux
 
 package procfs
 

vendor/github.com/prometheus/procfs/fs_statfs_type.go

@@ -11,8 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-//go:build !netbsd && !openbsd && !solaris && !windows && !nostatfs
-// +build !netbsd,!openbsd,!solaris,!windows,!nostatfs
+//go:build freebsd || linux
+// +build freebsd linux
 
 package procfs
 

vendor/github.com/prometheus/procfs/mountstats.go

@@ -44,6 +44,14 @@ const (
 
 	fieldTransport11TCPLen = 13
 	fieldTransport11UDPLen = 10
+
+	// kernel version >= 4.14 MaxLen
+	// See: https://elixir.bootlin.com/linux/v6.4.8/source/net/sunrpc/xprtrdma/xprt_rdma.h#L393
+	fieldTransport11RDMAMaxLen = 28
+
+	// kernel version <= 4.2 MinLen
+	// See: https://elixir.bootlin.com/linux/v4.2.8/source/net/sunrpc/xprtrdma/xprt_rdma.h#L331
+	fieldTransport11RDMAMinLen = 20
 )
 
 // A Mount is a device mount parsed from /proc/[pid]/mountstats.
@@ -233,6 +241,33 @@ type NFSTransportStats struct {
 	// A running counter, incremented on each request as the current size of the
 	// pending queue.
 	CumulativePendingQueue uint64
+
+	// Stats below only available with stat version 1.1.
+	// Transport over RDMA
+
+	// accessed when sending a call
+	ReadChunkCount   uint64
+	WriteChunkCount  uint64
+	ReplyChunkCount  uint64
+	TotalRdmaRequest uint64
+
+	// rarely accessed error counters
+	PullupCopyCount      uint64
+	HardwayRegisterCount uint64
+	FailedMarshalCount   uint64
+	BadReplyCount        uint64
+	MrsRecovered         uint64
+	MrsOrphaned          uint64
+	MrsAllocated         uint64
+	EmptySendctxQ        uint64
+
+	// accessed when receiving a reply
+	TotalRdmaReply    uint64
+	FixupCopyCount    uint64
+	ReplyWaitsForSend uint64
+	LocalInvNeeded    uint64
+	NomsgCallCount    uint64
+	BcallCount        uint64
 }
 
 // parseMountStats parses a /proc/[pid]/mountstats file and returns a slice
@@ -587,14 +622,17 @@ func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats
 			expectedLength = fieldTransport11TCPLen
 		} else if protocol == "udp" {
 			expectedLength = fieldTransport11UDPLen
+		} else if protocol == "rdma" {
+			expectedLength = fieldTransport11RDMAMinLen
 		} else {
 			return nil, fmt.Errorf("%w: invalid NFS protocol \"%s\" in stats 1.1 statement: %v", ErrFileParse, protocol, ss)
 		}
-		if len(ss) != expectedLength {
-			return nil, fmt.Errorf("%w: invalid NFS transport stats 1.1 statement: %v", ErrFileParse, ss)
+		if (len(ss) != expectedLength && (protocol == "tcp" || protocol == "udp")) ||
+			(protocol == "rdma" && len(ss) < expectedLength) {
+			return nil, fmt.Errorf("%w: invalid NFS transport stats 1.1 statement: %v, protocol: %v", ErrFileParse, ss, protocol)
 		}
 	default:
-		return nil, fmt.Errorf("%s: Unrecognized NFS transport stats version: %q", ErrFileParse, statVersion)
+		return nil, fmt.Errorf("%s: Unrecognized NFS transport stats version: %q, protocol: %v", ErrFileParse, statVersion, protocol)
 	}
 
 	// Allocate enough for v1.1 stats since zero value for v1.1 stats will be okay
@@ -604,7 +642,9 @@ func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats
 	// Note: slice length must be set to length of v1.1 stats to avoid a panic when
 	// only v1.0 stats are present.
 	// See: https://github.com/prometheus/node_exporter/issues/571.
-	ns := make([]uint64, fieldTransport11TCPLen)
+	//
+	// Note: NFS Over RDMA slice length is fieldTransport11RDMAMaxLen
+	ns := make([]uint64, fieldTransport11RDMAMaxLen+3)
 	for i, s := range ss {
 		n, err := strconv.ParseUint(s, 10, 64)
 		if err != nil {
@@ -622,9 +662,14 @@ func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats
 	// we set them to 0 here.
 	if protocol == "udp" {
 		ns = append(ns[:2], append(make([]uint64, 3), ns[2:]...)...)
+	} else if protocol == "tcp" {
+		ns = append(ns[:fieldTransport11TCPLen], make([]uint64, fieldTransport11RDMAMaxLen-fieldTransport11TCPLen+3)...)
+	} else if protocol == "rdma" {
+		ns = append(ns[:fieldTransport10TCPLen], append(make([]uint64, 3), ns[fieldTransport10TCPLen:]...)...)
 	}
 
 	return &NFSTransportStats{
+		// NFS xprt over tcp or udp
 		Protocol:                 protocol,
 		Port:                     ns[0],
 		Bind:                     ns[1],
@@ -636,8 +681,32 @@ func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats
 		BadTransactionIDs:        ns[7],
 		CumulativeActiveRequests: ns[8],
 		CumulativeBacklog:        ns[9],
-		MaximumRPCSlotsUsed:      ns[10],
-		CumulativeSendingQueue:   ns[11],
-		CumulativePendingQueue:   ns[12],
+
+		// NFS xprt over tcp or udp
+		// And statVersion 1.1
+		MaximumRPCSlotsUsed:    ns[10],
+		CumulativeSendingQueue: ns[11],
+		CumulativePendingQueue: ns[12],
+
+		// NFS xprt over rdma
+		// And stat Version 1.1
+		ReadChunkCount:       ns[13],
+		WriteChunkCount:      ns[14],
+		ReplyChunkCount:      ns[15],
+		TotalRdmaRequest:     ns[16],
+		PullupCopyCount:      ns[17],
+		HardwayRegisterCount: ns[18],
+		FailedMarshalCount:   ns[19],
+		BadReplyCount:        ns[20],
+		MrsRecovered:         ns[21],
+		MrsOrphaned:          ns[22],
+		MrsAllocated:         ns[23],
+		EmptySendctxQ:        ns[24],
+		TotalRdmaReply:       ns[25],
+		FixupCopyCount:       ns[26],
+		ReplyWaitsForSend:    ns[27],
+		LocalInvNeeded:       ns[28],
+		NomsgCallCount:       ns[29],
+		BcallCount:           ns[30],
 	}, nil
 }

vendor/github.com/prometheus/procfs/proc_fdinfo.go

@@ -26,6 +26,7 @@ var (
 	rPos          = regexp.MustCompile(`^pos:\s+(\d+)$`)
 	rFlags        = regexp.MustCompile(`^flags:\s+(\d+)$`)
 	rMntID        = regexp.MustCompile(`^mnt_id:\s+(\d+)$`)
+	rIno          = regexp.MustCompile(`^ino:\s+(\d+)$`)
 	rInotify      = regexp.MustCompile(`^inotify`)
 	rInotifyParts = regexp.MustCompile(`^inotify\s+wd:([0-9a-f]+)\s+ino:([0-9a-f]+)\s+sdev:([0-9a-f]+)(?:\s+mask:([0-9a-f]+))?`)
 )
@@ -40,6 +41,8 @@ type ProcFDInfo struct {
 	Flags string
 	// Mount point ID
 	MntID string
+	// Inode number
+	Ino string
 	// List of inotify lines (structured) in the fdinfo file (kernel 3.8+ only)
 	InotifyInfos []InotifyInfo
 }
@@ -51,7 +54,7 @@ func (p Proc) FDInfo(fd string) (*ProcFDInfo, error) {
 		return nil, err
 	}
 
-	var text, pos, flags, mntid string
+	var text, pos, flags, mntid, ino string
 	var inotify []InotifyInfo
 
 	scanner := bufio.NewScanner(bytes.NewReader(data))
@@ -63,6 +66,8 @@ func (p Proc) FDInfo(fd string) (*ProcFDInfo, error) {
 			flags = rFlags.FindStringSubmatch(text)[1]
 		} else if rMntID.MatchString(text) {
 			mntid = rMntID.FindStringSubmatch(text)[1]
+		} else if rIno.MatchString(text) {
+			ino = rIno.FindStringSubmatch(text)[1]
 		} else if rInotify.MatchString(text) {
 			newInotify, err := parseInotifyInfo(text)
 			if err != nil {
@@ -77,6 +82,7 @@ func (p Proc) FDInfo(fd string) (*ProcFDInfo, error) {
 		Pos:          pos,
 		Flags:        flags,
 		MntID:        mntid,
+		Ino:          ino,
 		InotifyInfos: inotify,
 	}
 

vendor/github.com/prometheus/procfs/proc_maps.go

@@ -63,17 +63,17 @@ type ProcMap struct {
 // parseDevice parses the device token of a line and converts it to a dev_t
 // (mkdev) like structure.
 func parseDevice(s string) (uint64, error) {
-	toks := strings.Split(s, ":")
-	if len(toks) < 2 {
-		return 0, fmt.Errorf("%w: unexpected number of fields, expected: 2, got: %q", ErrFileParse, len(toks))
+	i := strings.Index(s, ":")
+	if i == -1 {
+		return 0, fmt.Errorf("%w: expected separator `:` in %s", ErrFileParse, s)
 	}
 
-	major, err := strconv.ParseUint(toks[0], 16, 0)
+	major, err := strconv.ParseUint(s[0:i], 16, 0)
 	if err != nil {
 		return 0, err
 	}
 
-	minor, err := strconv.ParseUint(toks[1], 16, 0)
+	minor, err := strconv.ParseUint(s[i+1:], 16, 0)
 	if err != nil {
 		return 0, err
 	}
@@ -93,17 +93,17 @@ func parseAddress(s string) (uintptr, error) {
 
 // parseAddresses parses the start-end address.
 func parseAddresses(s string) (uintptr, uintptr, error) {
-	toks := strings.Split(s, "-")
-	if len(toks) < 2 {
-		return 0, 0, fmt.Errorf("%w: invalid address", ErrFileParse)
+	idx := strings.Index(s, "-")
+	if idx == -1 {
+		return 0, 0, fmt.Errorf("%w: expected separator `-` in %s", ErrFileParse, s)
 	}
 
-	saddr, err := parseAddress(toks[0])
+	saddr, err := parseAddress(s[0:idx])
 	if err != nil {
 		return 0, 0, err
 	}
 
-	eaddr, err := parseAddress(toks[1])
+	eaddr, err := parseAddress(s[idx+1:])
 	if err != nil {
 		return 0, 0, err
 	}

vendor/github.com/prometheus/procfs/proc_status.go

@@ -23,7 +23,7 @@ import (
 )
 
 // ProcStatus provides status information about the process,
-// read from /proc/[pid]/stat.
+// read from /proc/[pid]/status.
 type ProcStatus struct {
 	// The process ID.
 	PID int
@@ -32,6 +32,8 @@ type ProcStatus struct {
 
 	// Thread group ID.
 	TGID int
+	// List of Pid namespace.
+	NSpids []uint64
 
 	// Peak virtual memory size.
 	VmPeak uint64 // nolint:revive
@@ -127,6 +129,8 @@ func (s *ProcStatus) fillStatus(k string, vString string, vUint uint64, vUintByt
 		copy(s.UIDs[:], strings.Split(vString, "\t"))
 	case "Gid":
 		copy(s.GIDs[:], strings.Split(vString, "\t"))
+	case "NSpid":
+		s.NSpids = calcNSPidsList(vString)
 	case "VmPeak":
 		s.VmPeak = vUintBytes
 	case "VmSize":
@@ -200,3 +204,18 @@ func calcCpusAllowedList(cpuString string) []uint64 {
 	sort.Slice(g, func(i, j int) bool { return g[i] < g[j] })
 	return g
 }
+
+func calcNSPidsList(nspidsString string) []uint64 {
+	s := strings.Split(nspidsString, " ")
+	var nspids []uint64
+
+	for _, nspid := range s {
+		nspid, _ := strconv.ParseUint(nspid, 10, 64)
+		if nspid == 0 {
+			continue
+		}
+		nspids = append(nspids, nspid)
+	}
+
+	return nspids
+}