diff --git a/models/dbfs/dbfile.go b/models/dbfs/dbfile.go
index ebaa4db80c..ba118182e5 100644
--- a/models/dbfs/dbfile.go
+++ b/models/dbfs/dbfile.go
@@ -38,7 +38,7 @@ type file struct {
 var _ File = (*file)(nil)
 
 func (f *file) readAt(fileMeta *FileMeta, offset int64, p []byte) (n int, err error) {
-	if f.offset >= fileMeta.FileSize {
+	if offset >= fileMeta.FileSize {
 		return 0, io.EOF
 	}
 
diff --git a/models/dbfs/dbfs_test.go b/models/dbfs/dbfs_test.go
index 2c3e0f8c64..9ebe23a1c5 100644
--- a/models/dbfs/dbfs_test.go
+++ b/models/dbfs/dbfs_test.go
@@ -13,9 +13,8 @@ import (
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/unittest"
 
-	"github.com/stretchr/testify/assert"
-
 	_ "github.com/mattn/go-sqlite3"
+	"github.com/stretchr/testify/assert"
 )
 
 func changeDefaultFileBlockSize(n int64) (restore func()) {
@@ -152,3 +151,36 @@ func TestDbfsReadWrite(t *testing.T) {
 	_, err = f2r.ReadString('\n')
 	assert.ErrorIs(t, err, io.EOF)
 }
+
+func TestDbfsSeekWrite(t *testing.T) {
+	defer changeDefaultFileBlockSize(4)()
+
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	f, err := OpenFile(db.DefaultContext, "test2.log", os.O_RDWR|os.O_CREATE)
+	assert.NoError(t, err)
+	defer f.Close()
+
+	n, err := f.Write([]byte("111"))
+	assert.NoError(t, err)
+
+	_, err = f.Seek(int64(n), io.SeekStart)
+	assert.NoError(t, err)
+
+	_, err = f.Write([]byte("222"))
+	assert.NoError(t, err)
+
+	_, err = f.Seek(int64(n), io.SeekStart)
+	assert.NoError(t, err)
+
+	_, err = f.Write([]byte("333"))
+	assert.NoError(t, err)
+
+	fr, err := OpenFile(db.DefaultContext, "test2.log", os.O_RDONLY)
+	assert.NoError(t, err)
+	defer f.Close()
+
+	buf, err := io.ReadAll(fr)
+	assert.NoError(t, err)
+	assert.EqualValues(t, "111333", string(buf))
+}