Re: [PATCH] drivers: net: cpsw: fix kmemleak false-positive reports for sk buffers

From: Catalin Marinas
Date: Tue Aug 09 2016 - 11:19:48 EST


On Tue, Aug 09, 2016 at 03:09:44PM +0300, Grygorii Strashko wrote:
> diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
> index 0805855..0456e0e 100644
> --- a/drivers/net/ethernet/ti/cpsw.c
> +++ b/drivers/net/ethernet/ti/cpsw.c
> @@ -732,6 +732,7 @@ static void cpsw_rx_handler(void *token, int len, int status)
> netif_receive_skb(skb);
> ndev->stats.rx_bytes += len;
> ndev->stats.rx_packets++;
> + kmemleak_not_leak(new_skb);
> } else {
> ndev->stats.rx_dropped++;
> new_skb = skb;
> @@ -1323,6 +1324,7 @@ static int cpsw_ndo_open(struct net_device *ndev)
> kfree_skb(skb);
> goto err_cleanup;
> }
> + kmemleak_not_leak(skb);

Nitpick: I would add a short comment above the kmemleak_not_leak() calls
on why there is a false positive. Otherwise:

Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>