diff --git a/models/asymkey/ssh_key_authorized_keys.go b/models/asymkey/ssh_key_authorized_keys.go
index f0a3a77eaff04..7ef4f3545d54c 100644
--- a/models/asymkey/ssh_key_authorized_keys.go
+++ b/models/asymkey/ssh_key_authorized_keys.go
@@ -206,6 +206,10 @@ func RegeneratePublicKeys(ctx context.Context, t io.StringWriter) error {
 				return err
 			}
 		}
+		err = scanner.Err()
+		if err != nil {
+			return fmt.Errorf("scan: %w", err)
+		}
 		f.Close()
 	}
 	return nil
diff --git a/models/asymkey/ssh_key_authorized_principals.go b/models/asymkey/ssh_key_authorized_principals.go
index 592196c255ae7..3242b54ae4880 100644
--- a/models/asymkey/ssh_key_authorized_principals.go
+++ b/models/asymkey/ssh_key_authorized_principals.go
@@ -128,6 +128,10 @@ func regeneratePrincipalKeys(ctx context.Context, t io.StringWriter) error {
 				return err
 			}
 		}
+		err = scanner.Err()
+		if err != nil {
+			return fmt.Errorf("scan: %w", err)
+		}
 		f.Close()
 	}
 	return nil
diff --git a/modules/doctor/authorizedkeys.go b/modules/doctor/authorizedkeys.go
index 050a4e79742f0..43740af3db233 100644
--- a/modules/doctor/authorizedkeys.go
+++ b/modules/doctor/authorizedkeys.go
@@ -50,6 +50,10 @@ func checkAuthorizedKeys(ctx context.Context, logger log.Logger, autofix bool) e
 		}
 		linesInAuthorizedKeys.Add(line)
 	}
+	err = scanner.Err()
+	if err != nil {
+		return fmt.Errorf("scan: %w", err)
+	}
 	f.Close()
 
 	// now we regenerate and check if there are any lines missing
diff --git a/modules/git/commit.go b/modules/git/commit.go
index 4ff8f6148f741..933a6fa660b27 100644
--- a/modules/git/commit.go
+++ b/modules/git/commit.go
@@ -9,6 +9,7 @@ import (
 	"bytes"
 	"context"
 	"errors"
+	"fmt"
 	"io"
 	"os/exec"
 	"strconv"
@@ -391,6 +392,10 @@ func (c *Commit) GetSubModules() (*ObjectCache, error) {
 			}
 		}
 	}
+	err = scanner.Err()
+	if err != nil {
+		return nil, fmt.Errorf("scan: %w", err)
+	}
 
 	return c.submoduleCache, nil
 }
diff --git a/modules/git/repo_stats.go b/modules/git/repo_stats.go
index 41f94e24f99ca..ce82946873e1e 100644
--- a/modules/git/repo_stats.go
+++ b/modules/git/repo_stats.go
@@ -124,6 +124,10 @@ func (repo *Repository) GetCodeActivityStats(fromTime time.Time, branch string)
 					}
 				}
 			}
+			err = scanner.Err()
+			if err != nil {
+				return fmt.Errorf("scan: %w", err)
+			}
 			a := make([]*CodeActivityAuthor, 0, len(authors))
 			for _, v := range authors {
 				a = append(a, v)
diff --git a/modules/markup/csv/csv.go b/modules/markup/csv/csv.go
index 12458e954ade9..75baf980136c0 100644
--- a/modules/markup/csv/csv.go
+++ b/modules/markup/csv/csv.go
@@ -6,6 +6,7 @@ package markup
 import (
 	"bufio"
 	"bytes"
+	"fmt"
 	"html"
 	"io"
 	"regexp"
@@ -98,6 +99,10 @@ func (Renderer) Render(ctx *markup.RenderContext, input io.Reader, output io.Wri
 		}
 		return tmpBlock.Flush()
 	}
+	err = scan.Err()
+	if err != nil {
+		return fmt.Errorf("scan: %w", err)
+	}
 
 	rd, err := csv.CreateReaderAndDetermineDelimiter(ctx, bytes.NewReader(rawBytes))
 	if err != nil {
diff --git a/routers/web/repo/compare.go b/routers/web/repo/compare.go
index e778104a0fa9c..f953feedcd6ce 100644
--- a/routers/web/repo/compare.go
+++ b/routers/web/repo/compare.go
@@ -977,5 +977,9 @@ func getExcerptLines(commit *git.Commit, filePath string, idxLeft, idxRight, chu
 		}
 		diffLines = append(diffLines, diffLine)
 	}
+	err = scanner.Err()
+	if err != nil {
+		return nil, fmt.Errorf("scan: %w", err)
+	}
 	return diffLines, nil
 }