net sched: fix some kernel memory leaks
We leak at least 32bits of kernel memory to user land in tc dump,
because we dont init all fields (capab ?) of the dumped structure.
Use C99 initializers so that holes and non explicit fields are zeroed.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index 11f195a..0c311be 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -219,15 +219,16 @@
{
unsigned char *b = skb_tail_pointer(skb);
struct tcf_mirred *m = a->priv;
- struct tc_mirred opt;
+ struct tc_mirred opt = {
+ .index = m->tcf_index,
+ .action = m->tcf_action,
+ .refcnt = m->tcf_refcnt - ref,
+ .bindcnt = m->tcf_bindcnt - bind,
+ .eaction = m->tcfm_eaction,
+ .ifindex = m->tcfm_ifindex,
+ };
struct tcf_t t;
- opt.index = m->tcf_index;
- opt.action = m->tcf_action;
- opt.refcnt = m->tcf_refcnt - ref;
- opt.bindcnt = m->tcf_bindcnt - bind;
- opt.eaction = m->tcfm_eaction;
- opt.ifindex = m->tcfm_ifindex;
NLA_PUT(skb, TCA_MIRRED_PARMS, sizeof(opt), &opt);
t.install = jiffies_to_clock_t(jiffies - m->tcf_tm.install);
t.lastuse = jiffies_to_clock_t(jiffies - m->tcf_tm.lastuse);
