From b8e429a2feac623a34e21099a4a69de29b6d873e Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 13 Jan 2016 10:28:06 -0500 Subject: [PATCH] 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 --- net/netlink/genetlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index d3f6b063467b..f830326b3b1d 100644 --- 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); -- 2.30.2