genetlink: Fix off-by-one in genl_allocate_reserve_groups()

The bug fix for adding n_groups to the computation forgot to adjust ">=" to ">" to keep the condition correct. Signed-off-by: David S. Miller <[email protected]>
AlbanBedel · Jan 13, 2016 · b8e429a · b8e429a
1 parent f1640c3
commit b8e429a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
@@ -185,7 +185,7 @@ static int genl_allocate_reserve_groups(int n_groups, int *first_id)
 			}
 		}
 
-		if (id + n_groups >= mc_groups_longs * BITS_PER_LONG) {
+		if (id + n_groups > mc_groups_longs * BITS_PER_LONG) {
 			unsigned long new_longs = mc_groups_longs +
 						  BITS_TO_LONGS(n_groups);
 			size_t nlen = new_longs * sizeof(unsigned long);