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

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

diff --git a/fs/bcachefs/dirent.c b/fs/bcachefs/dirent.c
index d5883ab..a95165b 100644 (file)
--- a/fs/bcachefs/dirent.c
+++ b/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,

diff --git a/fs/bcachefs/opts.c b/fs/bcachefs/opts.c
index fd3f7cd..5de2960 100644 (file)
--- a/fs/bcachefs/opts.c
+++ b/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",