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

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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 <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-01-13 10:28:06 -05:00
parent f1640c3dde
commit b8e429a2fe
1 changed files with 1 additions and 1 deletions
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2
net/netlink/genetlink.c
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@ -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);