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

- From: Paul Moses \<hidden\>
- Date: 2026-01-21 13:39:57 
- List: netdev
- Page: https://ratatoskr.run/netdev/2026/01/3380068
- Thread: https://ratatoskr.run/netdev/2026/01/3380021/t.md

```text
Yes, it's not proven so you might be right, I knew it was 4 bytes at best. We can do next or toss it, I don't feel strongly either way.

On Wednesday, January 21st, 2026 at 7:25 AM, Eric Dumazet [ref] wrote:

> 
> 
> On Wed, Jan 21, 2026 at 2:20 PM Paul Moses p@1g4.org wrote:
> 
> > 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>
> > ---
> 
> 
> I do not see a bug to fix, current code is fine.
> 
> act_connmark problem was that "struct tc_connmark" had a 16bit hole.
> 
> No such issue for struct tc_gate.
```