Commit 2d06dfec authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Mike Snitzer
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dm integrity: fix a crash if "recalculate" used without "internal_hash" 



Recalculate can only be specified with internal_hash.

Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent 19c329f6

drivers/md/dm-integrity.c

+6 −0
Original line number Diff line number Diff line
@@ -4235,6 +4235,12 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv) 
			r = -ENOMEM;

			goto bad;

		}

	} else {

		if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) {

			ti->error = "Recalculate can only be specified with internal_hash";

			r = -EINVAL;

			goto bad;

		}

	}



	ic->bufio = dm_bufio_client_create(ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev,