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net/sched: cls_u32: Use struct_size() in kzalloc() 

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gustavo A. R. Silva 2020-06-18 09:53:42 -05:00 committed by David S. Miller
parent 11a33de2df
commit c5eb179edd
1 changed files with 1 additions and 3 deletions
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4
net/sched/cls_u32.c
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@ -796,9 +796,7 @@ static struct tc_u_knode *u32_init_knode(struct net *net, struct tcf_proto *tp,
struct tc_u32_sel *s = &n->sel;
struct tc_u_knode *new;
new = kzalloc(sizeof(*n) + s->nkeys*sizeof(struct tc_u32_key),
GFP_KERNEL);
new = kzalloc(struct_size(new, sel.keys, s->nkeys), GFP_KERNEL);
if (!new)
return NULL;