Subject: Re: [PATCH net-next] selftests: bonding: delete link1_1 in the cleanup path

From: Simon Horman <[email-masked]>
Date: Thu, 24 Aug 2023 10:50:07 +0200

On Wed, Aug 23, 2023 at 11:26:40AM +0800, Zhengchao Shao wrote:
> If failed to set link1_1 to netns client, we should delete link1_1 in the
> cleanup path. But if set link1_1 to netns client successfully, delete
> link1_1 will report warning. So delete link1_1 in the cleanup path and
> drop any warning message.

Hi Zhengchao Shao,

It seems unfortunate to drop all warning and error messages.
What if the message is about something other than link1_1 not existing?

Would it be practical to check if link1_1 exists,
say by looking in sysfs, before trying to delete it?

> Reported-by: Hangbin Liu <[email-masked]>
> Closes: https://lore.kernel.org/all/ZNyJx1HtXaUzOkNA@Laptop-X1/
> Signed-off-by: Zhengchao Shao <[email-masked]>
> ---
>  .../drivers/net/bonding/bond-arp-interval-causes-panic.sh        | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/tools/testing/selftests/drivers/net/bonding/bond-arp-interval-causes-panic.sh b/tools/testing/selftests/drivers/net/bonding/bond-arp-interval-causes-panic.sh
> index 7b2d421f09cf..2b3c678c5205 100755
> --- a/tools/testing/selftests/drivers/net/bonding/bond-arp-interval-causes-panic.sh
> +++ b/tools/testing/selftests/drivers/net/bonding/bond-arp-interval-causes-panic.sh
> @@ -11,6 +11,7 @@ finish()
>  {
>  	ip netns delete server || true
>  	ip netns delete client || true
> +	ip link del link1_1 >/dev/null 2>&1
>  }
>  
>  trap finish EXIT
> -- 
> 2.34.1
> 
>