metainfo/fuzz.go | 28 ++++++++++++++++++++++++++++

diff --git a/metainfo/fuzz.go b/metainfo/fuzz.go
new file mode 100644
index 0000000000000000000000000000000000000000..60ece520d0ecbae4245f2214d1650f5c62c5d7b7
--- /dev/null
+++ b/metainfo/fuzz.go
@@ -0,0 +1,28 @@
+// +build gofuzz
+
+package metainfo
+
+import (
+	"github.com/anacrolix/torrent/bencode"
+)
+
+func Fuzz(b []byte) int {
+	var mi MetaInfo
+	err := bencode.Unmarshal(b, &mi)
+	if err != nil {
+		return 0
+	}
+	_, err = bencode.Marshal(mi)
+	if err != nil {
+		panic(err)
+	}
+	info, err := mi.UnmarshalInfo()
+	if err != nil {
+		return 0
+	}
+	_, err = bencode.Marshal(info)
+	if err != nil {
+		panic(err)
+	}
+	return 1
+}