diff options
-rw-r--r-- | block/genhd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/block/genhd.c b/block/genhd.c index f618e6585e83..ddb17c4adc8a 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -444,7 +444,9 @@ int __must_check device_add_disk(struct device *parent, struct gendisk *disk, DISK_MAX_PARTS); disk->minors = DISK_MAX_PARTS; } - if (disk->first_minor + disk->minors > MINORMASK + 1) + if (disk->first_minor > MINORMASK || + disk->minors > MINORMASK + 1 || + disk->first_minor + disk->minors > MINORMASK + 1) goto out_exit_elevator; } else { if (WARN_ON(disk->minors)) |