Messages in this thread Patch in this message | | | Date | Wed, 1 May 2019 17:01:08 -0500 | From | "Gustavo A. R. Silva" <> | Subject | [PATCH][next] netfilter: xt_hashlimit: use struct_size() helper |
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Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes, in particular in the context in which this code is being used.
So, replace code of the following form:
sizeof(struct xt_hashlimit_htable) + sizeof(struct hlist_head) * size
with:
struct_size(hinfo, hash, size)
This code was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> --- net/netfilter/xt_hashlimit.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c index 8d86e39d6280..a30536b17ee1 100644 --- a/net/netfilter/xt_hashlimit.c +++ b/net/netfilter/xt_hashlimit.c @@ -288,8 +288,7 @@ static int htable_create(struct net *net, struct hashlimit_cfg3 *cfg, size = 16; } /* FIXME: don't use vmalloc() here or anywhere else -HW */ - hinfo = vmalloc(sizeof(struct xt_hashlimit_htable) + - sizeof(struct hlist_head) * size); + hinfo = vmalloc(struct_size(hinfo, hash, size)); if (hinfo == NULL) return -ENOMEM; *out_hinfo = hinfo; -- 2.21.0
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