netdev - Re: kernel oops when system under network stress

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Message-ID: <20081016091009.GA5794@gondor.apana.org.au>
Date:	Thu, 16 Oct 2008 17:10:09 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Alex Samad <alex@...ad.com.au>
Cc:	David Miller <davem@...emloft.net>, linux-net@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: kernel oops when system under network stress

On Thu, Oct 16, 2008 at 06:09:34PM +1100, Alex Samad wrote:
>
> just about, within a 5-10 min window

Great.  Please apply this patch and let me know what it prints
out (if anything).

Thanks,
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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--
diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
index 16d43f2..72af09d 100644
--- a/net/ipv6/inet6_connection_sock.c
+++ b/net/ipv6/inet6_connection_sock.c
@@ -233,6 +233,13 @@ int inet6_csk_xmit(struct sk_buff *skb, int ipfragok)
 	/* Restore final destination back after routing done */
 	ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
 
+	if (WARN_ON(skb_is_gso(skb) && skb->ip_summed != CHECKSUM_PARTIAL)) {
+		printk("%s: %d %d %d 0x%x 0x%x 0x%lx", skb->dst->dev->name,
+		       skb->ip_summed, skb_shinfo(skb)->gso_size, skb->len,
+		       skb_shinfo(skb)->gso_type, sk->sk_route_caps,
+		       skb->dst->dev->features);
+	}
+
 	return ip6_xmit(sk, skb, &fl, np->opt, 0);
 }
 
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