"sb" is a dm_raid_superblock struct pointer so the pointer math doesn't work and we will end up corrupting memory. Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index b802644..a7cb9dd 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -826,7 +826,7 @@ static void super_sync(struct mddev *mddev, struct md_rdev *rdev) test_bit(Faulty, &(rs->dev[i].rdev.flags))) failed_devices |= (1ULL << i); - memset(sb + sizeof(*sb), 0, rdev->sb_size - sizeof(*sb)); + memset(sb + 1, 0, rdev->sb_size - sizeof(*sb)); sb->magic = cpu_to_le32(DM_RAID_MAGIC); sb->features = cpu_to_le32(0); /* No features yet */ -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
