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bcachefs: Guard against unknown k.k->type in __bkey_invalid()

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For forwards compatibility we have to allow unknown key types, and only
run the checks that make sense against them.

Fix a missing guard on k.k->type being known.

Reported-by: syzbot+ae4dc916da3ce51f284f@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-05-05 22:33:05 -04:00
parent f39055220f
commit 2bb9600d5d
1 changed files with 2 additions and 2 deletions
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4
fs/bcachefs/bkey_methods.c
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@ -171,8 +171,8 @@ int __bch2_bkey_invalid(struct bch_fs *c, struct bkey_s_c k,
if (type >= BKEY_TYPE_NR)
return 0;
bkey_fsck_err_on((type == BKEY_TYPE_btree ||
(flags & BKEY_INVALID_COMMIT)) &&
bkey_fsck_err_on(k.k->type < KEY_TYPE_MAX &&
(type == BKEY_TYPE_btree || (flags & BKEY_INVALID_COMMIT)) &&
!(bch2_key_types_allowed[type] & BIT_ULL(k.k->type)), c, err,
bkey_invalid_type_for_btree,
"invalid key type for btree %s (%s)",