bcachefs: Ensure bad d_type doesn't oops in bch2_dirent_to_text()

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>

fs/bcachefs/dirent.c

@@ -112,7 +112,10 @@ void bch2_dirent_to_text(struct printbuf *out, struct bch_fs *c,
 
 	bch_scnmemcpy(out, d.v->d_name,
 		      bch2_dirent_name_bytes(d));
-	pr_buf(out, " -> %llu type %s", d.v->d_inum, bch2_d_types[d.v->d_type]);
+	pr_buf(out, " -> %llu type %s", d.v->d_inum,
+	       d.v->d_type < DT_MAX
+	       ? bch2_d_types[d.v->d_type]
+	       : "(bad d_type)");
 }
 
 static struct bkey_i_dirent *dirent_create_key(struct btree_trans *trans,

fs/bcachefs/opts.c

@@ -63,7 +63,7 @@ const char * const bch2_member_states[] = {
 
 #undef x
 
-const char * const bch2_d_types[] = {
+const char * const bch2_d_types[DT_MAX] = {
 	[DT_UNKNOWN]	= "unknown",
 	[DT_FIFO]	= "fifo",
 	[DT_CHR]	= "chr",