diff --git a/.golangci.yml b/.golangci.yml
index 68cc82bd373..d5b2e4e7f5a 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -29,7 +29,6 @@ linters-settings:
     excludes:
       - G402
       - G404
-      - G601
   testifylint:
     enable:
       - bool-compare
diff --git a/tests/server/api/rule_test.go b/tests/server/api/rule_test.go
index 2cbabe16d0f..f4d85d60361 100644
--- a/tests/server/api/rule_test.go
+++ b/tests/server/api/rule_test.go
@@ -228,14 +228,14 @@ func (suite *ruleTestSuite) checkGet(cluster *tests.TestCluster) {
 			code:  http.StatusNotFound,
 		},
 	}
-	for _, testCase := range testCases {
+	for i, testCase := range testCases {
 		suite.T().Log(testCase.name)
 		var resp placement.Rule
 		url := fmt.Sprintf("%s/rule/%s/%s", urlPrefix, testCase.rule.GroupID, testCase.rule.ID)
 		if testCase.found {
 			tu.Eventually(re, func() bool {
 				err = tu.ReadGetJSON(re, tests.TestDialClient, url, &resp)
-				return compareRule(&resp, &testCase.rule)
+				return compareRule(&resp, &testCases[i].rule)
 			})
 		} else {
 			err = tu.CheckGetJSON(tests.TestDialClient, url, nil, tu.Status(re, testCase.code))
diff --git a/tools/pd-api-bench/config/config.go b/tools/pd-api-bench/config/config.go
index d1048c0da72..35377c12f33 100644
--- a/tools/pd-api-bench/config/config.go
+++ b/tools/pd-api-bench/config/config.go
@@ -96,18 +96,21 @@ func (c *Config) Parse(arguments []string) error {
 // InitCoordinator set case config from config itself.
 func (c *Config) InitCoordinator(co *cases.Coordinator) {
 	for name, cfg := range c.HTTP {
+		cfg := cfg
 		err := co.SetHTTPCase(name, &cfg)
 		if err != nil {
 			log.Error("create HTTP case failed", zap.Error(err))
 		}
 	}
 	for name, cfg := range c.GRPC {
+		cfg := cfg
 		err := co.SetGRPCCase(name, &cfg)
 		if err != nil {
 			log.Error("create gRPC case failed", zap.Error(err))
 		}
 	}
 	for name, cfg := range c.ETCD {
+		cfg := cfg
 		err := co.SetETCDCase(name, &cfg)
 		if err != nil {
 			log.Error("create etcd case failed", zap.Error(err))
diff --git a/tools/pd-api-bench/main.go b/tools/pd-api-bench/main.go
index d62d83437b6..747fbaa10c1 100644
--- a/tools/pd-api-bench/main.go
+++ b/tools/pd-api-bench/main.go
@@ -255,6 +255,7 @@ func runHTTPServer(cfg *config.Config, co *cases.Coordinator) {
 			return
 		}
 		for name, cfg := range input {
+			cfg := cfg
 			co.SetHTTPCase(name, &cfg)
 		}
 		c.String(http.StatusOK, "")
@@ -272,6 +273,7 @@ func runHTTPServer(cfg *config.Config, co *cases.Coordinator) {
 			return
 		}
 		for name, cfg := range input {
+			cfg := cfg
 			co.SetGRPCCase(name, &cfg)
 		}
 		c.String(http.StatusOK, "")
@@ -289,6 +291,7 @@ func runHTTPServer(cfg *config.Config, co *cases.Coordinator) {
 			return
 		}
 		for name, cfg := range input {
+			cfg := cfg
 			co.SetETCDCase(name, &cfg)
 		}
 		c.String(http.StatusOK, "")