linux-kernel - Re: [ovs-dev] [PATCH net] openvswitch: add missing resv_start_op initialization for dp_vport_genl

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Message-ID: <7f118c0f-c79a-7f26-aefc-afae00483233@ovn.org>
Date:   Mon, 31 Oct 2022 12:39:08 +0100
From:   Ilya Maximets <i.maximets@....org>
To:     Ziyang Xuan <william.xuanziyang@...wei.com>, pshelar@....org,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, netdev@...r.kernel.org, dev@...nvswitch.org
Cc:     linux-kernel@...r.kernel.org, i.maximets@....org
Subject: Re: [ovs-dev] [PATCH net] openvswitch: add missing resv_start_op
 initialization for dp_vport_genl_family

On 10/31/22 09:12, Ziyang Xuan via dev wrote:
> I got a warning using the latest mainline codes to start vms as following:
> 
> ===================================================
> WARNING: CPU: 1 PID: 1 at net/netlink/genetlink.c:383 genl_register_family+0x6c/0x76c
> CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.1.0-rc2-00886-g882ad2a2a8ff #43
> ...
> Call trace:
>  genl_register_family+0x6c/0x76c
>  dp_init+0xa8/0x124
>  do_one_initcall+0x84/0x450
> 
> It is because that commit 9c5d03d36251 ("genetlink: start to validate
> reserved header bytes") has missed the resv_start_op initialization
> for dp_vport_genl_family, and commit ce48ebdd5651 ("genetlink: limit
> the use of validation workarounds to old ops") add checking warning.
> 
> Add resv_start_op initialization for dp_vport_genl_family to fix it.
> 
> Fixes: 9c5d03d36251 ("genetlink: start to validate reserved header bytes")
> Signed-off-by: Ziyang Xuan <william.xuanziyang@...wei.com>
> ---

Hi, Ziyang Xuan.  Thanks for the patch!

But it looks like Jakub already fixed that issue a couple of days ago:
  https://git.kernel.org/netdev/net/c/e4ba4554209f

Best regards, Ilya Maximets.