X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=block%2Fioctl.c;h=4a85096f5410adde92d01cd58ecba30373c808f1;hb=69e9576bf283b0ee3423642d7e7dbe4b3a16e455;hp=4476e0e85d1687c08b31f81e7f633ae802b14814;hpb=2d809dcd88f590d68dd741dc4d28a84128449fbd;p=~andy%2Flinux

diff --git a/block/ioctl.c b/block/ioctl.c
index 4476e0e85d1..4a85096f541 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -41,7 +41,7 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
 			    sizeof(long long) > sizeof(long)) {
 				long pstart = start, plength = length;
 				if (pstart != start || plength != length
-				    || pstart < 0 || plength < 0)
+				    || pstart < 0 || plength < 0 || partno > 65535)
 					return -EINVAL;
 			}