# \[PATCH net v3 1/7\] net/sched: act\_gate: zero-initialize netlink dump struct

- From: Paul Moses \<hidden\>
- Date: 2026-01-21 13:20:48 
- List: netdev
- Page: https://ratatoskr.run/netdev/2026/01/3380022
- Thread: https://ratatoskr.run/netdev/2026/01/3380021/t.md

```text
Zero-initialize the dump struct before selective assignment to avoid
leaking stack padding in netlink replies. This matches other actions
(e.g. act_connmark) that zero-init their dump structs.

Fixes: a51c328df310 ("net: qos: introduce a gate control flow action")
Cc: <redacted>
Signed-off-by: Paul Moses <redacted>
---
 net/sched/act_gate.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/sched/act_gate.c b/net/sched/act_gate.c
index c1f75f2727576..aacd57e5f4374 100644
--- a/net/sched/act_gate.c
+++ b/net/sched/act_gate.c
@@ -499,16 +499,16 @@ static int tcf_gate_dump(struct sk_buff *skb, struct tc_action *a,
 {
 	unsigned char *b = skb_tail_pointer(skb);
 	struct tcf_gate *gact = to_gate(a);
-	struct tc_gate opt = {
-		.index    = gact->tcf_index,
-		.refcnt   = refcount_read(&gact->tcf_refcnt) - ref,
-		.bindcnt  = atomic_read(&gact->tcf_bindcnt) - bind,
-	};
+	struct tc_gate opt = { };
 	struct tcfg_gate_entry *entry;
 	struct tcf_gate_params *p;
 	struct nlattr *entry_list;
 	struct tcf_t t;
 
+	opt.index = gact->tcf_index;
+	opt.refcnt = refcount_read(&gact->tcf_refcnt) - ref;
+	opt.bindcnt = atomic_read(&gact->tcf_bindcnt) - bind;
+
 	spin_lock_bh(&gact->tcf_lock);
 	opt.action = gact->tcf_action;
 
-- 
2.52.GIT


```