diff options
| -rw-r--r-- | block/partitions/core.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/block/partitions/core.c b/block/partitions/core.c index 87a21942d606..13a7341299a9 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -441,10 +441,21 @@ static bool partition_overlaps(struct gendisk *disk, sector_t start, int bdev_add_partition(struct gendisk *disk, int partno, sector_t start, sector_t length) { + sector_t capacity = get_capacity(disk), end; struct block_device *part; int ret; mutex_lock(&disk->open_mutex); + if (check_add_overflow(start, length, &end)) { + ret = -EINVAL; + goto out; + } + + if (start >= capacity || end > capacity) { + ret = -EINVAL; + goto out; + } + if (!disk_live(disk)) { ret = -ENXIO; goto out; |