diff --git a/models/asymkey/ssh_key_authorized_keys.go b/models/asymkey/ssh_key_authorized_keys.go
index 9279db20208fb..7621994866e3f 100644
--- a/models/asymkey/ssh_key_authorized_keys.go
+++ b/models/asymkey/ssh_key_authorized_keys.go
@@ -152,6 +152,10 @@ 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/modules/git/commit.go b/modules/git/commit.go
index facb632bd9b5e..789a2e8f6927f 100644
--- a/modules/git/commit.go
+++ b/modules/git/commit.go
@@ -9,6 +9,7 @@ import (
 	"bytes"
 	"context"
 	"errors"
+	"fmt"
 	"io"
 	"os/exec"
 	"strconv"
@@ -396,6 +397,10 @@ 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 570c4f47041da..50bb918442686 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"
@@ -123,6 +124,10 @@ func (Renderer) fallbackRender(input io.Reader, tmpBlock *bufio.Writer) error {
 			return err
 		}
 	}
+	err = scan.Err()
+	if err != nil {
+		return fmt.Errorf("scan: %w", err)
+	}
 
 	_, err = tmpBlock.WriteString("</pre>")
 	if err != nil {
diff --git a/routers/web/repo/compare.go b/routers/web/repo/compare.go
index b0570f97c3b7b..bf42b77b66a4b 100644
--- a/routers/web/repo/compare.go
+++ b/routers/web/repo/compare.go
@@ -980,5 +980,9 @@ 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
 }
diff --git a/services/asymkey/ssh_key_authorized_principals.go b/services/asymkey/ssh_key_authorized_principals.go
index 9154db7dbb58a..822dd0ffe7a00 100644
--- a/services/asymkey/ssh_key_authorized_principals.go
+++ b/services/asymkey/ssh_key_authorized_principals.go
@@ -122,6 +122,10 @@ 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/services/doctor/authorizedkeys.go b/services/doctor/authorizedkeys.go
index d5a96605b9ca2..bc0266c4bc78b 100644
--- a/services/doctor/authorizedkeys.go
+++ b/services/doctor/authorizedkeys.go
@@ -51,6 +51,10 @@ 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