netdev - Re: WARNING: at net/ipv4/tcp.c:1610 tcp

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Date:	Sun, 27 May 2012 21:46:11 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jack Stone <jwjstone@...tmail.fm>
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: WARNING: at net/ipv4/tcp.c:1610 tcp_recvmsg+0xb1b/0xc70()

On Sun, 2012-05-27 at 21:36 +0200, Eric Dumazet wrote:
> pied elsewhere, so we can double check.
> 
> diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
> index 3ba605f..22e4c9a 100644
> --- a/net/ipv4/tcp.c
> +++ b/net/ipv4/tcp.c
> @@ -1606,8 +1606,10 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
>  			if (tcp_hdr(skb)->fin)
>  				goto found_fin_ok;
>  			WARN(!(flags & MSG_PEEK),
> -			     "recvmsg bug 2: copied %X seq %X rcvnxt %X fl %X\n",
> -			     *seq, TCP_SKB_CB(skb)->seq, tp->rcv_nxt, flags);
> +			     "recvmsg bug 2: copied %X seq %X end_seq %X rcvnxt %X fl %X offset %u len %u syn %d tcp_flags %X\n",
> +			     *seq, TCP_SKB_CB(skb)->seq, TCP_SKB_CB(skb)->end_seq,
> +			     tp->rcv_nxt, flags, offset, skb->len, tcp_hdr(skb)->syn,
> +				 TCP_SKB_CB(skb)->tcp_flags);
>  		}
>  
>  		/* Well, if we have backlog, try to process it now yet. */
> 

Oh well, ignore this, as tcp_flags is only set in output path.



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