Re: [PATCH net 1/7] net: hns3: fix add VLAN fail issue

[Jijie Shao]

on 2023/11/2 18:31, Paolo Abeni wrote:
> On Sat, 2023-10-28 at 10:59 +0800, Jijie Shao wrote:
>
>   	/* when port base vlan enabled, we use port base vlan as the vlan
>   	 * filter entry. In this case, we don't update vlan filter table
> @@ -10481,7 +10482,9 @@ int hclge_set_vlan_filter(struct hnae3_handle *handle, __be16 proto,
>   		 * and try to remove it from hw later, to be consistence
>   		 * with stack
>   		 */
> +		mutex_lock(&hdev->vport_lock);
>   		set_bit(vlan_id, vport->vlan_del_fail_bmap);
> +		mutex_unlock(&hdev->vport_lock);
> It looks like that the 'hclge_rm_vport_vlan_table()' call a few lines
> above will now happen with the vport_lock unlocked.
>
> That looks racy and would deserve at least a comment explaining why
> it's safe.
>
> Thanks,
>
> Paolo

Yeah, this is a problem that causes the function to be invoked when it 
is not locked. We'll get lock before the function be invoked in V2 
Thanks, Jijie