linux-kernel - Re: [PATCH] drivers/net: release skb on failure

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Message-ID: <20190920184642.3c36d26b@cakuba.netronome.com>
Date:   Fri, 20 Sep 2019 18:49:51 -0700
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Navid Emamdoost <navid.emamdoost@...il.com>
Cc:     emamd001@....edu, smccaman@....edu, kjlu@....edu,
        Manish Chopra <manishc@...vell.com>,
        GR-Linux-NIC-Dev@...vell.com,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers/net: release skb on failure

On Tue, 17 Sep 2019 23:45:21 -0500, Navid Emamdoost wrote:
> In ql_run_loopback_test, ql_lb_send does not release skb when fails. So
> it must be released before returning.
> 
> Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
> ---
>  drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c | 4 +++-

Thanks for the patch, this driver has been moved, please see

commit 955315b0dc8c8641311430f40fbe53990ba40e33
Author: Benjamin Poirier <bpoirier@...e.com>
Date:   Tue Jul 23 15:14:13 2019 +0900

    qlge: Move drivers/net/ethernet/qlogic/qlge/ to
    drivers/staging/qlge/ 
    The hardware has been declared EOL by the vendor more than 5 years
    ago. What's more relevant to the Linux kernel is that the quality
    of this driver is not on par with many other mainline drivers.
    
    Cc: Manish Chopra <manishc@...vell.com>
    Message-id: <20190617074858.32467-1-bpoirier@...e.com>
    Signed-off-by: Benjamin Poirier <bpoirier@...e.com>
    Signed-off-by: David S. Miller <davem@...emloft.net>

Could you rebase, and send the new version to GregKH as he is the
stable maintainer?

>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c b/drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c
> index a6886cc5654c..d539b71b2a5c 100644
> --- a/drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c
> +++ b/drivers/net/ethernet/qlogic/qlge/qlge_ethtool.c
> @@ -544,8 +544,10 @@ static int ql_run_loopback_test(struct ql_adapter *qdev)
>  		skb_put(skb, size);
>  		ql_create_lb_frame(skb, size);
>  		rc = ql_lb_send(skb, qdev->ndev);
> -		if (rc != NETDEV_TX_OK)
> +		if (rc != NETDEV_TX_OK) {
> +			dev_kfree_skb_any(skb);
>  			return -EPIPE;
> +		}
>  		atomic_inc(&qdev->lb_count);
>  	}
>  	/* Give queue time to settle before testing results. */