We should add support for cryptographic macs on the superblock - and it won't be hard, but it'll need an incompatible feature bit (and we have a new incompatible feature versioning scheme coming).
For now, just add a guard to avoid a dull ptr deref in gen_poly_key(). Reported-by: [email protected] Signed-off-by: Kent Overstreet <[email protected]> --- fs/bcachefs/super-io.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/bcachefs/super-io.c b/fs/bcachefs/super-io.c index 4c29f8215d54..6a086c1c4b14 100644 --- a/fs/bcachefs/super-io.c +++ b/fs/bcachefs/super-io.c @@ -677,7 +677,8 @@ static int read_one_super(struct bch_sb_handle *sb, u64 offset, struct printbuf } enum bch_csum_type csum_type = BCH_SB_CSUM_TYPE(sb->sb); - if (csum_type >= BCH_CSUM_NR) { + if (csum_type >= BCH_CSUM_NR || + bch2_csum_type_is_encryption(csum_type)) { prt_printf(err, "unknown checksum type %llu", BCH_SB_CSUM_TYPE(sb->sb)); return -BCH_ERR_invalid_sb_csum_type; } -- 2.45.2
