diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index 65c30dec8222..dbabb8e46fb7 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -5130,6 +5130,20 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned int argc, char **argv ti->error = "Journal mac mismatch"; goto bad; } + if (ic->fix_hmac && !(ic->sb->flags & cpu_to_le32(SB_FLAG_FIXED_HMAC)) && ic->journal_mac_alg.key_string) { + /* + * If this happens, it may be either because someone tampered + * with the device or it may be due to a bug in the + * integritysetup tool. + * + * In the latter case, upgrade to integritysetup 2.8.7 and use + * the argument --integrity-legacy-hmac when using the open + * command. + */ + r = -EINVAL; + ti->error = "fix_hmac is on the command line but not in the superblock"; + goto bad; + } get_provided_data_sectors(ic); if (!ic->provided_data_sectors) {