netdev - Re: 3.7.3+: Bad paging request in ip_rcv_finish while running NFS traffic.

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Message-ID: <1358875607.3464.4020.camel@edumazet-glaptop>
Date:	Tue, 22 Jan 2013 09:26:47 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Ben Greear <greearb@...delatech.com>
Cc:	netdev <netdev@...r.kernel.org>,
	"linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>
Subject: Re: 3.7.3+:  Bad paging request in ip_rcv_finish while running NFS
 traffic.

On Tue, 2013-01-22 at 09:17 -0800, Eric Dumazet wrote:
> On Tue, 2013-01-22 at 09:08 -0800, Ben Greear wrote:
> 
> > Unfortunately, I hit it again this morning after the first restart of
> > my application (which bounces all 3000 interfaces).  Memory poisoning
> > was disabled.
> 
> Is your NFS traffic using TCP or UDP ?
> 

Oh well, it seems macvlan.c has to skb_drop_dst(skb) before giving skb
to netif_rx()

diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 68a43fe..4f049ee 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -114,6 +114,7 @@ static int macvlan_broadcast_one(struct sk_buff *skb,
 	if (!skb)
 		return NET_RX_DROP;
 
+	skb_dst_drop(skb);
 	if (local)
 		return vlan->forward(dev, skb);
 
@@ -220,6 +221,7 @@ static rx_handler_result_t macvlan_handle_frame(struct sk_buff **pskb)
 	if (!skb)
 		goto out;
 
+	skb_dst_drop(skb);
 	skb->dev = dev;
 	skb->pkt_type = PACKET_HOST;
 


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