From: Jakub Kicinski <kuba@kernel.org>
To: Florian Fainelli <florian.fainelli@broadcom.com>
Cc: Wang Hai <wanghai38@huawei.com>,
bcm-kernel-feedback-list@broadcom.com, davem@davemloft.net,
edumazet@google.com, pabeni@redhat.com, zhangxiaoxu5@huawei.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH net] net: systemport: fix potential memory leak in bcm_sysport_xmit()
Date: Tue, 15 Oct 2024 11:01:54 -0700 [thread overview]
Message-ID: <20241015110154.55c7442f@kernel.org> (raw)
In-Reply-To: <0c21ac6a-fda4-4924-9ad1-db1b549be418@broadcom.com>
On Mon, 14 Oct 2024 09:59:27 -0700 Florian Fainelli wrote:
> > diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
> > index c9faa8540859..0a68b526e4a8 100644
> > --- a/drivers/net/ethernet/broadcom/bcmsysport.c
> > +++ b/drivers/net/ethernet/broadcom/bcmsysport.c
> > @@ -1359,6 +1359,7 @@ static netdev_tx_t bcm_sysport_xmit(struct sk_buff *skb,
> > netif_err(priv, tx_err, dev, "DMA map failed at %p (len=%d)\n",
> > skb->data, skb_len);
> > ret = NETDEV_TX_OK;
> > + dev_kfree_skb_any(skb);
>
> Since we already have a private counter tracking DMA mapping errors, I
> would follow what the driver does elsewhere in the transmit path,
> especially what bcm_sysport_insert_tsb() does, and just use
> dev_consume_skb_any() here.
Are you saying that if the packet drop is accounted is some statistics
we should not inform drop monitor about it? 🤔️
That wasn't my understanding of kfree_skb vs consume_skb..
next prev parent reply other threads:[~2024-10-15 18:01 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-14 14:51 [PATCH net] net: systemport: fix potential memory leak in bcm_sysport_xmit() Wang Hai
2024-10-14 16:59 ` Florian Fainelli
2024-10-15 14:54 ` Wang Hai
2024-10-15 18:01 ` Jakub Kicinski [this message]
2024-10-15 18:07 ` Florian Fainelli
2024-10-15 19:54 ` Jakub Kicinski
2024-10-15 23:55 ` Florian Fainelli
2024-10-16 0:00 ` Jakub Kicinski
2024-10-15 23:53 ` Florian Fainelli
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