From 2cf8b902f59636b35f187165637d2660d905ce54 Mon Sep 17 00:00:00 2001
From: "Cardy.Tang" <zuniorone@gmail.com>
Date: Fri, 19 May 2023 09:49:58 +0800
Subject: [PATCH] bugfix: add nil pointer check for cgroup v1 mem usage

Signed-off-by: Cardy.Tang <zuniorone@gmail.com>
---
 metrics/cgroups/v1/memory.go | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/metrics/cgroups/v1/memory.go b/metrics/cgroups/v1/memory.go
index 86f6196ce..90ccc16ea 100644
--- a/metrics/cgroups/v1/memory.go
+++ b/metrics/cgroups/v1/memory.go
@@ -544,7 +544,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Total,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Usage == nil {
 				return nil
 			}
 			return []value{
@@ -560,7 +560,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Usage == nil {
 				return nil
 			}
 			return []value{
@@ -576,7 +576,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Usage == nil {
 				return nil
 			}
 			return []value{
@@ -592,7 +592,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Usage == nil {
 				return nil
 			}
 			return []value{
@@ -608,7 +608,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Total,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Swap == nil {
 				return nil
 			}
 			return []value{
@@ -624,7 +624,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Swap == nil {
 				return nil
 			}
 			return []value{
@@ -640,7 +640,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Swap == nil {
 				return nil
 			}
 			return []value{
@@ -656,7 +656,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Swap == nil {
 				return nil
 			}
 			return []value{
@@ -672,7 +672,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Total,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Kernel == nil {
 				return nil
 			}
 			return []value{
@@ -688,7 +688,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Kernel == nil {
 				return nil
 			}
 			return []value{
@@ -704,7 +704,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Kernel == nil {
 				return nil
 			}
 			return []value{
@@ -720,7 +720,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.Kernel == nil {
 				return nil
 			}
 			return []value{
@@ -736,7 +736,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Total,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.KernelTCP == nil {
 				return nil
 			}
 			return []value{
@@ -752,7 +752,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.KernelTCP == nil {
 				return nil
 			}
 			return []value{
@@ -768,7 +768,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.KernelTCP == nil {
 				return nil
 			}
 			return []value{
@@ -784,7 +784,7 @@ var memoryMetrics = []*metric{
 		unit: metrics.Bytes,
 		vt:   prometheus.GaugeValue,
 		getValues: func(stats *v1.Metrics) []value {
-			if stats.Memory == nil {
+			if stats.Memory == nil || stats.Memory.KernelTCP == nil {
 				return nil
 			}
 			return []value{
-- 
2.33.0