diff options
| author | Jeff Mahoney <jeffm@suse.com> | 2010-08-31 17:21:42 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-02 01:29:34 +0400 |
| commit | 0f04cfd098fb81fded74e78ea1a1b86cc6c6c31e (patch) | |
| tree | cec4306a238658123aaba429a7cdb679c8deb801 | |
| parent | 78b620ce9e168d08ecfac2f4bb056c511b0601ec (diff) | |
| download | linux-0f04cfd098fb81fded74e78ea1a1b86cc6c6c31e.tar.xz | |
net sched: fix kernel leak in act_police
While reviewing commit 1c40be12f7d8ca1d387510d39787b12e512a7ce8, I
audited other users of tc_action_ops->dump for information leaks.
That commit covered almost all of them but act_police still had a leak.
opt.limit and opt.capab aren't zeroed out before the structure is
passed out.
This patch uses the C99 initializers to zero everything unused out.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sched/act_police.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/net/sched/act_police.c b/net/sched/act_police.c index 537a48732e9e..7ebf7439b478 100644 --- a/net/sched/act_police.c +++ b/net/sched/act_police.c @@ -350,22 +350,19 @@ tcf_act_police_dump(struct sk_buff *skb, struct tc_action *a, int bind, int ref) { unsigned char *b = skb_tail_pointer(skb); struct tcf_police *police = a->priv; - struct tc_police opt; - - opt.index = police->tcf_index; - opt.action = police->tcf_action; - opt.mtu = police->tcfp_mtu; - opt.burst = police->tcfp_burst; - opt.refcnt = police->tcf_refcnt - ref; - opt.bindcnt = police->tcf_bindcnt - bind; + struct tc_police opt = { + .index = police->tcf_index, + .action = police->tcf_action, + .mtu = police->tcfp_mtu, + .burst = police->tcfp_burst, + .refcnt = police->tcf_refcnt - ref, + .bindcnt = police->tcf_bindcnt - bind, + }; + if (police->tcfp_R_tab) opt.rate = police->tcfp_R_tab->rate; - else - memset(&opt.rate, 0, sizeof(opt.rate)); if (police->tcfp_P_tab) opt.peakrate = police->tcfp_P_tab->rate; - else - memset(&opt.peakrate, 0, sizeof(opt.peakrate)); NLA_PUT(skb, TCA_POLICE_TBF, sizeof(opt), &opt); if (police->tcfp_result) NLA_PUT_U32(skb, TCA_POLICE_RESULT, police->tcfp_result); |