diff options
| -rw-r--r-- | drivers/block/nbd.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index 1df3bfe5225..fdee7567fd1 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -757,6 +757,12 @@ static int __init nbd_init(void) if (max_part > 0) part_shift = fls(max_part); + if ((1UL << part_shift) > DISK_MAX_PARTS) + return -EINVAL; + + if (nbds_max > 1UL << (MINORBITS - part_shift)) + return -EINVAL; + for (i = 0; i < nbds_max; i++) { struct gendisk *disk = alloc_disk(1 << part_shift); if (!disk) |